From 63166345f8b49d5575daf21934221477e6bfd626 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Thu, 29 Feb 2024 22:02:18 +0100
Subject: [PATCH 01/27] initial web3.py changes

---
 examples/on-chain_mnist/action_agent.py | 25 +++++++-------
 giza_actions/agent.py                   | 45 ++++++++++++++++---------
 2 files changed, 42 insertions(+), 28 deletions(-)

diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index d3c643a..da96b91 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -1,6 +1,7 @@
-from ape_accounts import import_account_from_mnemonic
+from eth_account import Account
 import requests
 import os
+import json
 import numpy as np
 from PIL import Image
 from giza_actions.action import Action, action
@@ -21,6 +22,10 @@ class ProofType(EIP712Type):
 class ProofMessage(EIP712Message):
     proof: ProofType
 
+def import_account(mnemonic):
+    account = Account.from_mnemonic(mnemonic)
+    return account
+
 # Download model
 @task
 def download_model():
@@ -76,29 +81,25 @@ def sign_proof(proofMessage: ProofMessage, account):
 @task  
 async def verify_and_transmit(agent: GizaAgent): 
     # Define account details, these are stored in process.env
-    alias = os.getenv("ACCOUNT_ALIAS")
-    passphrase = os.getenv("PASSPHRASE")
     mnemonic = os.getenv("MNEMONIC")
-    print(alias)
-    print(passphrase) 
-    print(mnemonic)
-    contract_address = os.getenv("CONTRACT_ADDRESS")
-    contract_abi_path = "abi/MNISTNFT_abi.json"
+    account = import_account(mnemonic)
     
-    # Get account
-    account = import_account_from_mnemonic(alias, passphrase, mnemonic)   
+    contract_address = os.getenv("CONTRACT_ADDRESS")
+    with open("abi/MNISTNFT_abi.json", 'r') as f:
+        abi = json.load(f)
+      
     # Structure and sign the poof
     proofMessage = await structure_proof(agent, account)
     signed_proof = sign_proof(proofMessage, account)
         
     # Generate calldata 
     # Observe how we use the output of the agent's inference as the function parameter
-    calldata = agent.generate_calldata(contract_abi_path, "mint", [agent.inference])
+    calldata = agent.generate_calldata(abi, "mint", [agent.inference])
 
     proof = proofMessage.proof
     
     # Transmit transaction
-    receipt = agent.transmit(account, contract_address, contract_abi_path, agent.model, proof, signed_proof, calldata)
+    receipt = agent.transmit(account, contract_address, abi, agent.model, proof, signed_proof, calldata)
     
     return receipt
 
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index e7583f8..fdc8bbb 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -1,10 +1,9 @@
 import json
 from web3 import Web3
+from web3.exceptions import TransactionError
+from eth_account import Account
 from giza_actions.model import GizaModel
-from typing import Optional
 import requests
-from ape import Contract
-from ape.types.signatures import recover_signer
 import logging
 from giza.frameworks.cairo import verify
 
@@ -119,24 +118,38 @@ async def verify(self, proof):
             logging.error("An error occurred when verifying")
             return False
         
-    async def transmit(self, account, sc_address: str, sc_abi_path: str, proof, signed_proof, calldata: str):
+    def transmit(self, account: Account, contract_address: str, contract_abi: list, calldata: str):
         """
         Transmit: Verify the model proof, 
         
         Returns:
             A transaction receipt
         """    
-        # Verify the user's proof
-        assert self.verify(proof)
-        # Verify the signature
-        recovered_signer = recover_signer(proof, signed_proof)
-        assert recovered_signer == account.address
-        # Create contract instance
-        contract = Contract(sc_address, abi=sc_abi_path)
-        # Call the contract
         try:
-            receipt = contract.call(calldata, account)
-            if not receipt.failed:
-                return receipt
+            web3 = Web3()
+            contract = web3.eth.contract(address=contract_address, abi=contract_abi)
+            nonce = web3.eth.get_transaction_count(account.address)  
+
+            tx = contract.caller.call(tx={
+                "to": contract_address, 
+                "data": calldata,
+                "nonce": nonce,
+                "gas": 2000000
+            })
+        
+            signed_tx = account.sign_transaction(tx)
+            tx_hash = web3.eth.send_raw_transaction(signed_tx.rawTransaction)  
+            receipt = web3.eth.wait_for_transaction_receipt(tx_hash)
+            return receipt
+        
+        except ValueError as e:
+            print(f"Error encoding transaction: {e}")
+            return None
+
+        except TransactionError as e:
+            print(f"Transaction error: {e}") 
+            return None
+
         except Exception as e:
-            raise Exception(f"Transaction failed: {e}")
\ No newline at end of file
+            print(f"Error transmitting transaction: {e}")
+            return None
\ No newline at end of file

From 0041f45ff280491891c15301d2c58db137eb544c Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Thu, 29 Feb 2024 22:05:04 +0100
Subject: [PATCH 02/27] refactor transmit

---
 examples/on-chain_mnist/action_agent.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index da96b91..8efb77a 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -99,7 +99,8 @@ async def verify_and_transmit(agent: GizaAgent):
     proof = proofMessage.proof
     
     # Transmit transaction
-    receipt = agent.transmit(account, contract_address, abi, agent.model, proof, signed_proof, calldata)
+    # agent.model, proof, signed_proof, 
+    receipt = agent.transmit(account, contract_address, abi, calldata)
     
     return receipt
 

From b66e6b3ad2276e5d66776bc9a9cd457b789d7288 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Thu, 29 Feb 2024 22:13:15 +0100
Subject: [PATCH 03/27] verify sigs and proof

---
 examples/on-chain_mnist/action_agent.py |  2 +-
 giza_actions/agent.py                   | 11 ++++++++++-
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index 8efb77a..af76fbc 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -100,7 +100,7 @@ async def verify_and_transmit(agent: GizaAgent):
     
     # Transmit transaction
     # agent.model, proof, signed_proof, 
-    receipt = agent.transmit(account, contract_address, abi, calldata)
+    receipt = agent.transmit(account, contract_address, abi, proof, signed_proof, calldata)
     
     return receipt
 
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index fdc8bbb..47bc970 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -118,13 +118,22 @@ async def verify(self, proof):
             logging.error("An error occurred when verifying")
             return False
         
-    def transmit(self, account: Account, contract_address: str, contract_abi: list, calldata: str):
+    def transmit(self, account: Account, contract_address: str, contract_abi: list, proof, signed_proof, calldata: str):
         """
         Transmit: Verify the model proof, 
         
         Returns:
             A transaction receipt
         """    
+        web3 = Web3()
+        # Verify the proof signature
+        signer = web3.eth.account.recover_message(text=proof, signature=signed_proof)
+        assert signer.lower() == account.address.lower()
+        # Verify the proof
+        assert self.verify(proof)
+        
+        print("All good! ✅ Sending transaction...")
+        
         try:
             web3 = Web3()
             contract = web3.eth.contract(address=contract_address, abi=contract_abi)

From 62d76d15d8519de8ddc2b940fd33f0430c19f844 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Mon, 4 Mar 2024 10:29:24 +0100
Subject: [PATCH 04/27] fix: enable web3py mnemonic

---
 examples/on-chain_mnist/action_agent.py | 4 ++++
 giza_actions/agent.py                   | 5 -----
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index af76fbc..461416d 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -81,9 +81,13 @@ def sign_proof(proofMessage: ProofMessage, account):
 @task  
 async def verify_and_transmit(agent: GizaAgent): 
     # Define account details, these are stored in process.env
+    # Mnemonics are disabled for now, we can add a private key directly
+    Account.enable_unaudited_hdwallet_features()
     mnemonic = os.getenv("MNEMONIC")
     account = import_account(mnemonic)
     
+    account = Account.create()
+    
     contract_address = os.getenv("CONTRACT_ADDRESS")
     with open("abi/MNISTNFT_abi.json", 'r') as f:
         abi = json.load(f)
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 47bc970..7e166a1 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -1,6 +1,5 @@
 import json
 from web3 import Web3
-from web3.exceptions import TransactionError
 from eth_account import Account
 from giza_actions.model import GizaModel
 import requests
@@ -155,10 +154,6 @@ def transmit(self, account: Account, contract_address: str, contract_abi: list,
             print(f"Error encoding transaction: {e}")
             return None
 
-        except TransactionError as e:
-            print(f"Transaction error: {e}") 
-            return None
-
         except Exception as e:
             print(f"Error transmitting transaction: {e}")
             return None
\ No newline at end of file

From 6dcc892f04059bb1f95bb2115f9c0fefad5876a5 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Mon, 4 Mar 2024 10:50:18 +0100
Subject: [PATCH 05/27] fix: separate tasks from tasks and typos

---
 examples/on-chain_mnist/action_agent.py | 34 ++++++++++++-------------
 giza_actions/agent.py                   |  4 ++-
 2 files changed, 20 insertions(+), 18 deletions(-)

diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index 461416d..0cdffdb 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -11,7 +11,6 @@
 from eip712.messages import EIP712Message, EIP712Type
 from dotenv import load_dotenv
 
-
 load_dotenv()
 
 class ProofType(EIP712Type):
@@ -79,22 +78,11 @@ def sign_proof(proofMessage: ProofMessage, account):
 
 # Transmit 
 @task  
-async def verify_and_transmit(agent: GizaAgent): 
-    # Define account details, these are stored in process.env
-    # Mnemonics are disabled for now, we can add a private key directly
-    Account.enable_unaudited_hdwallet_features()
-    mnemonic = os.getenv("MNEMONIC")
-    account = import_account(mnemonic)
-    
-    account = Account.create()
-    
+async def verify_and_transmit(agent: GizaAgent, account, proofMessage: ProofMessage, signedProof): 
+    # Define tx details, these are stored in process.env
     contract_address = os.getenv("CONTRACT_ADDRESS")
-    with open("abi/MNISTNFT_abi.json", 'r') as f:
+    with open("examples/on-chain_mnist/abi/MNISTNFT_abi.json", 'r') as f:
         abi = json.load(f)
-      
-    # Structure and sign the poof
-    proofMessage = await structure_proof(agent, account)
-    signed_proof = sign_proof(proofMessage, account)
         
     # Generate calldata 
     # Observe how we use the output of the agent's inference as the function parameter
@@ -104,7 +92,7 @@ async def verify_and_transmit(agent: GizaAgent):
     
     # Transmit transaction
     # agent.model, proof, signed_proof, 
-    receipt = agent.transmit(account, contract_address, abi, proof, signed_proof, calldata)
+    receipt = agent.transmit(account, contract_address, abi, proof, signedProof, calldata)
     
     return receipt
 
@@ -118,13 +106,25 @@ async def transmission():
     img = process_image(img)
     id = 420
     version = 1
+    
+    # Mnemonics are disabled inherently, so we must enable
+    Account.enable_unaudited_hdwallet_features()
+    mnemonic = os.getenv("MNEMONIC")
+    account = import_account(mnemonic)
+    
+    account = Account.create()
     # Make sure the model is deployed
     model = GizaModel(id=id, version=version)
     agent = GizaAgent(model, id, version)
     agent.infer(input_feed={"image": img})
     # Perhaps add a wait() function
+    proofMessage = await structure_proof(agent, account)
+    
+    # Structure and sign the poof
+    signed_proof = sign_proof(proofMessage, account)
+
     try:
-       receipt = await verify_and_transmit(agent)
+       receipt = await verify_and_transmit(agent, proofMessage, signed_proof)
     except Exception as e:
         print(f"Error: {e}") 
     return receipt
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 7e166a1..5b7e087 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -5,6 +5,8 @@
 import requests
 import logging
 from giza.frameworks.cairo import verify
+from giza_actions.utils import get_deployment_uri
+
 
 class GizaAgent:
     """
@@ -58,7 +60,7 @@ def infer(self, input_file=None, input_feed=None):
     async def _get_model_data(self):
         """Get proof data from GCP and save it as a class attribute"""
         
-        uri = self.model.get_deployment_uri(self.model_id, self.version_id)
+        uri = get_deployment_uri(self.model_id, self.version_id)
         proof_metadata_url = f"https://api-dev.gizatech.xyz/api/v1/models/{self.model.id}/versions/{self.model.version}/deployments/{uri}/proofs/{self.request_id}"
 
         response = requests.get(proof_metadata_url)

From a73343573b24c648024b4ba412cd9f199be21e9c Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Tue, 5 Mar 2024 17:48:20 +0100
Subject: [PATCH 06/27] SDK refactor, fixes

---
 examples/on-chain_mnist/action_agent.py |  94 ++++-------
 giza_actions/agent.py                   | 213 +++++++++++++++++++-----
 giza_actions/model.py                   |   4 +
 3 files changed, 201 insertions(+), 110 deletions(-)

diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index 0cdffdb..3431afb 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -1,26 +1,20 @@
 from eth_account import Account
+from eth_account.messages import SignableMessage
 import requests
 import os
 import json
 import numpy as np
 from PIL import Image
 from giza_actions.action import Action, action
-from giza_actions.agent import GizaAgent
+from giza_actions.agent import GizaAgent, ProofType, ProofMessage
 from giza_actions.model import GizaModel
 from giza_actions.task import task
-from eip712.messages import EIP712Message, EIP712Type
+# Add these later when ape learns how to behave
+# from eip712.messages import EIP712Message, EIP712Type
 from dotenv import load_dotenv
 
 load_dotenv()
 
-class ProofType(EIP712Type):
-    proof_id: "string" # type: ignore
-    proof: "string" # type: ignore
-    address: "address" # type: ignore
-    
-class ProofMessage(EIP712Message):
-    proof: ProofType
-
 def import_account(mnemonic):
     account = Account.from_mnemonic(mnemonic)
     return account
@@ -60,45 +54,9 @@ def get_image(path):
         img = np.array(img)
     return img
 
-# Structure proof
-@task
-async def structure_proof(agent: GizaAgent, account):
-    raw_proof = await agent._get_model_data()
-    proof_id = agent.model.id
-    address = account.address
-    
-    proof = ProofType(proof_id=proof_id, proof=raw_proof, address=address)
-    
-    proofMessage = ProofMessage(proof=proof)
-    return proofMessage
-
-@task
-def sign_proof(proofMessage: ProofMessage, account):
-    return account.sign_message(proofMessage)
-
-# Transmit 
-@task  
-async def verify_and_transmit(agent: GizaAgent, account, proofMessage: ProofMessage, signedProof): 
-    # Define tx details, these are stored in process.env
-    contract_address = os.getenv("CONTRACT_ADDRESS")
-    with open("examples/on-chain_mnist/abi/MNISTNFT_abi.json", 'r') as f:
-        abi = json.load(f)
-        
-    # Generate calldata 
-    # Observe how we use the output of the agent's inference as the function parameter
-    calldata = agent.generate_calldata(abi, "mint", [agent.inference])
-
-    proof = proofMessage.proof
-    
-    # Transmit transaction
-    # agent.model, proof, signed_proof, 
-    receipt = agent.transmit(account, contract_address, abi, proof, signedProof, calldata)
-    
-    return receipt
-
 # Create Action
 @action(log_prints=True)
-async def transmission():
+def transmission():
     download_model()
     download_image()
     img_path = 'seven.png'
@@ -111,24 +69,30 @@ async def transmission():
     Account.enable_unaudited_hdwallet_features()
     mnemonic = os.getenv("MNEMONIC")
     account = import_account(mnemonic)
-    
-    account = Account.create()
-    # Make sure the model is deployed
-    model = GizaModel(id=id, version=version)
-    agent = GizaAgent(model, id, version)
-    agent.infer(input_feed={"image": img})
-    # Perhaps add a wait() function
-    proofMessage = await structure_proof(agent, account)
-    
-    # Structure and sign the poof
-    signed_proof = sign_proof(proofMessage, account)
 
-    try:
-       receipt = await verify_and_transmit(agent, proofMessage, signed_proof)
-    except Exception as e:
-        print(f"Error: {e}") 
-    return receipt
+    # Make sure the model is deployed, then create an agent
+    agent = GizaAgent(id=id, version=version)
+    # Rather than calling predict, we call infer to store the result
+    agent.infer(input_feed={"image": img})
+    # Fetch the contract address and modified inference result
+    contract_address = os.getenv("CONTRACT_ADDRESS")
+    inference_result = int(agent.inference[0][0] * 10)
+    # Get the proof 
+    proof_path = agent.get_model_data()
+    # verify proof
+    verified = agent.verify(proof_path)
+    # Sign the proof if verification succeeds, transmit txn
+    if verified:
+        (signed_proof, is_none, proofMessage) = agent.sign_proof(account)
+        try:
+            receipt = agent.transmit(account, contract_address, 11155111, "mint", inference_result, signed_proof, is_none, proofMessage, None, True)
+            return receipt
+        except Exception as e:
+            print(f"Error: {e}") 
+    else:
+        raise Exception("Proof verification failed.")
 
 if __name__ == '__main__':
-    action_deploy = Action(entrypoint=transmission, name="transmit-to-chain")
-    action_deploy.serve(name="transmit-to-chain")
\ No newline at end of file
+    transmission()
+    # action_deploy = Action(entrypoint=transmission, name="transmit-to-chain")
+    # action_deploy.serve(name="transmit-to-chain")
\ No newline at end of file
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 5b7e087..a259abc 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -1,21 +1,36 @@
-import json
+import os
+import time
 from web3 import Web3
 from eth_account import Account
+from eth_account.messages import SignableMessage
+from eth_typing import Address
 from giza_actions.model import GizaModel
 import requests
 import logging
 from giza.frameworks.cairo import verify
 from giza_actions.utils import get_deployment_uri
+from giza.client import DeploymentsClient
+from giza import API_HOST
+from pydantic import BaseModel
+from dotenv import load_dotenv
+from typing import List, Optional, Union
 
+load_dotenv()
 
-class GizaAgent:
+class ProofType(BaseModel):
+    model_id: int # The model being used for inference
+    proof: Optional[str] # The proof of inference
+    address: Address # Who is the signer?
+    
+class ProofMessage(BaseModel):
+    proof: ProofType
+    
+class GizaAgent(GizaModel):
     """
     A blockchain AI agent that helps users put their Actions on-chain. Uses Ape framework and GizaModel to verify a model proof off-chain, sign it with the user's account, and send results to a select EVM chain to execute code.
 
     Attributes:
         model (GizaModel): The model that this deployer uploads proofs for. This model must have the following fields: id, version, orion_runner_service_url in order to work. This is because all on-chain models require a proof to be generated by Orion Runner.
-        model_id: The model_id of the model we are using for on-chain inference
-        version_id: The version_id of the model we are using for on-chain inference
         inference: The result of the GizaModel inference
         request_id: The request_id of the proof to fetch from the GCP
         proof: The proof from GCP that we will use to verify, sign, and send along with inference data
@@ -29,15 +44,13 @@ class GizaAgent:
         deploy: verifies the proof, then calls the smart contract with calldata from inference
     """
     
-    def __init__(self, model: GizaModel, model_id, version_id):
+    def __init__(self, id: Optional[int] = None, version: Optional[int] = None, **kwargs):
         """Initialize deployer.
         
         Args:
             model (GizaModel): GizaModel instance
         """
-        self.model = model
-        self.model_id = model_id
-        self.version_id = version_id
+        super().__init__(id=id, version=version, **kwargs)
 
     def infer(self, input_file=None, input_feed=None):
 
@@ -50,32 +63,48 @@ def infer(self, input_file=None, input_feed=None):
             params['input_feed'] = input_feed
 
         params['verifiable'] = True
-        params['job_size'] = "L"
+        params['job_size'] = "M"
         params['output_dtype'] = "Tensor<FP16x16>"
         
-        self.inference, self.request_id = self.model.predict(**params)
+        self.inference, self.request_id = self.predict(**params)
 
         print("Inference saved! ✅ Result: ", self.inference, self.request_id)
         
-    async def _get_model_data(self):
+    def get_model_data(self):
         """Get proof data from GCP and save it as a class attribute"""
-        
+        client = DeploymentsClient(API_HOST)
+
         uri = get_deployment_uri(self.model_id, self.version_id)
-        proof_metadata_url = f"https://api-dev.gizatech.xyz/api/v1/models/{self.model.id}/versions/{self.model.version}/deployments/{uri}/proofs/{self.request_id}"
+        # get this from CLI
+        proof_metadata_url = f"https://api.gizatech.xyz/api/v1/models/{self.model_id}/versions/{self.version_id}/deployments/{uri}/proofs/{self.request_id}:download"
 
-        response = requests.get(proof_metadata_url)
-        
-        logging.info(f"Response status code: {response.status_code}")
-        logging.debug(f"Full response: {response.text}")
+        time.sleep(3)
+        logging.info(f"Fetching proof metadata from {proof_metadata_url}... ⏳")
+        deployment_id = get_deployment_id(self.model_id, self.version_id)
+        timeout = time.time() + 800
 
-        if response.status_code == 200:
-            proof_metadata = response.json()
-            self.proof = proof_metadata
-            return proof_metadata
-        else:
-            raise Exception(f"Failed to get proof metadata: {response.text}")
+        while True:
+            now = time.time()
+            if now > timeout:
+                print("Proof retrieval timed out")
+                raise TimeoutError("Proof retrieval timed out")
+            try:
+                proof = client.get_proof(self.model_id, self.version_id, deployment_id, self.request_id)
+                print(f"Proof: {proof.json(exclude_unset=True)}")
+                break  # Exit the loop if proof is retrieved successfully
+            except requests.exceptions.HTTPError:
+                print("Proof retrieval failing, sleeping for 5 seconds")
+                time.sleep(5)
+
+        # Save the proof to a file
+        proof_file = "zk.proof"
+        content = client.download_proof(self.model_id, self.version_id, deployment_id, self.request_id)
+        with open(proof_file, "wb") as f:
+            f.write(content)
 
-    def generate_calldata(self, abi_path, function_name, parameters):
+        return os.path.abspath(proof_file)
+                
+    def _generate_calldata(self, contract_address: Address, chain_id, function_name, parameters):
         """
         Generate calldata for calling a smart contract function
 
@@ -87,19 +116,74 @@ def generate_calldata(self, abi_path, function_name, parameters):
         Returns:
             str: Hex string of calldata
         """
-        with open(abi_path, 'r') as f:
-            abi = json.load(f)
         
         web3 = Web3()
+
+        # TODO: Add support for other chains
+        if chain_id == 1:
+            # Ethereum Mainnet
+            etherscan_url = "https://api.etherscan.io/api"
+        elif chain_id == 1115511:
+            # Ethereum Sepolia Testnet
+            etherscan_url = "https://api-sepolia.etherscan.io/api"
+        elif chain_id == 5:
+            # Ethereum Goerli Testnet
+            etherscan_url = "https://api-goerli.etherscan.io/api"
+        else:
+            raise ValueError("Unsupported chain ID")
+        
+        # Make an API request to the Etherscan API to retrieve the contract ABI
+        params = {
+            "module": "contract",
+            "action": "getabi",
+            "address": contract_address,
+            "apikey": os.environ["ETHERSCAN_API_KEY"],
+        }
+        
+        response = requests.get(etherscan_url, params=params)
+        response_json = response.json()
+        
+        if response_json["status"] == "1":
+            abi = response_json["result"][0]["ABI"]
+        else:
+            raise ValueError("Failed to retrieve contract ABI")
+        
         contract = web3.eth.contract(abi=abi)
         
-        function_abi = next((x for x in abi if x['name'] == function_name), None)
+        function_abi = None
+        for item in abi:
+            if 'name' in item and item['name'] == function_name:
+                function_abi = item
+                break
+        
         if function_abi is None:
             raise ValueError(f"Function {function_name} not found in ABI")
-            
+        
         calldata = contract.encodeABI(function_name, args=parameters)
         return calldata
     
+    async def sign_proof(self, account: Account, proof: Optional[str]):
+        address = account.address
+        
+        proof = ProofType(model_id=self.model_id, proof=proof, address=address)
+        proofMessage = ProofMessage(proof=proof)
+        
+        raw_message = proofMessage.proof.proof
+        version = b'\x19'
+        header = b''
+        
+        if proofMessage.proof.proof is None:
+            dummy_message = "dummy_proof"
+            dummy_body = dummy_message.encode('utf-8')
+            dummy_signable_message = SignableMessage(version=version, header=header, body=dummy_body)
+            dummy_signature = account.sign_message(dummy_signable_message)
+            return (dummy_signature, True, proofMessage)
+        
+        body = raw_message.encode('utf-8')
+        signable_message = SignableMessage(version=version, header=header, body=body)
+        sig = account.sign_message(signable_message)
+        return (sig, False, proofMessage)
+        
     async def verify(self, proof):
         """
         Verify proof locally. Must be run *after* infer() and _get_model_data() have been run.
@@ -107,8 +191,8 @@ async def verify(self, proof):
         Returns:
             bool: True if proof is valid
         """
-        model_id = self.model.id
-        version_id = self.model.version
+        model_id = self.model_id
+        version_id = self.version_id
         try:
             result = verify(proof, model_id, version_id)
             if result is None:
@@ -119,35 +203,62 @@ async def verify(self, proof):
             logging.error("An error occurred when verifying")
             return False
         
-    def transmit(self, account: Account, contract_address: str, contract_abi: list, proof, signed_proof, calldata: str):
+    def transmit(self, account: Account, contract_address: Address, chain_id: int, function_name: str, params, signed_proof, is_none, proofMessage, rpc_url: Optional[str], unsafe: bool = False):
         """
-        Transmit: Verify the model proof, 
+        Transmit: Verify the proof signature (so we know that the account owner signed off on the proof verification), verify the proof, then send the transaction to the contract.
         
         Returns:
             A transaction receipt
         """    
+        
         web3 = Web3()
-        # Verify the proof signature
-        signer = web3.eth.account.recover_message(text=proof, signature=signed_proof)
-        assert signer.lower() == account.address.lower()
-        # Verify the proof
-        assert self.verify(proof)
+        
+        if not unsafe:
+            if is_none:
+                raise ValueError("Proof cannot be None when unsafe is False")
+            
+            print("Proof retrieved! ✅")
+            signer = web3.eth.account.recover_message(proofMessage.proof.proof, signed_proof)
+            assert signer.lower() == account.address.lower()
+            print("Proof signature verified! 🔥")
+            assert self._verify(proofMessage.proof.proof)
+            print("Proof verified! ⚡️")
+        else:
+            if is_none:
+                print("Warning: Proof is None. Skipping proof verification.")
+                # Generate a dummy signature
+                signed_proof = account.sign_message("dummy_proof")
+            else:
+                print("Proof retrieved! ✅")
+                signer = web3.eth.account.recover_message(proofMessage.proof.proof, signed_proof)
+                assert signer.lower() == account.address.lower()
+                print("Proof signature verified! 🔥")
+                assert self._verify(proofMessage.proof.proof)
+                print("Proof verified! ⚡️")
         
         print("All good! ✅ Sending transaction...")
         
         try:
-            web3 = Web3()
-            contract = web3.eth.contract(address=contract_address, abi=contract_abi)
+            if rpc_url is not None:
+                web3 = Web3(Web3.HTTPProvider(rpc_url))
+            else:
+                alchemy_url = "https://eth-sepolia.g.alchemy.com/v2/aGP6ImVTfOlef4kzUxw0-31sabFgyTCT"
+                web3 = Web3(Web3.HTTPProvider(alchemy_url))
+            # contract = web3.eth.contract(address=contract_address, abi=contract_abi)
             nonce = web3.eth.get_transaction_count(account.address)  
+            
+            calldata = self._generate_calldata(contract_address, chain_id, function_name, params)
 
-            tx = contract.caller.call(tx={
+            #TODO: Figure out how to estimate gas
+            transaction = {
                 "to": contract_address, 
                 "data": calldata,
                 "nonce": nonce,
-                "gas": 2000000
-            })
-        
-            signed_tx = account.sign_transaction(tx)
+                "gas": 200000,
+                "gasPrice": 40000000000,
+            }
+
+            signed_tx = account.sign_transaction(transaction)
             tx_hash = web3.eth.send_raw_transaction(signed_tx.rawTransaction)  
             receipt = web3.eth.wait_for_transaction_receipt(tx_hash)
             return receipt
@@ -158,4 +269,16 @@ def transmit(self, account: Account, contract_address: str, contract_abi: list,
 
         except Exception as e:
             print(f"Error transmitting transaction: {e}")
-            return None
\ No newline at end of file
+            return None
+
+        
+        
+def get_deployment_id(model_id, version_id):
+    """
+    Retrieve the deployment ID for the model and version.
+
+    Returns:
+        int: The ID of the deployment.
+    """
+    client = DeploymentsClient(API_HOST)
+    return client.list(model_id, version_id).root[0].id
\ No newline at end of file
diff --git a/giza_actions/model.py b/giza_actions/model.py
index 60eb23f..a033386 100644
--- a/giza_actions/model.py
+++ b/giza_actions/model.py
@@ -31,6 +31,8 @@ class GizaModel:
         version_client (VersionsClient): Client to interact with the versions endpoint of the Giza API.
         api_client (ApiClient): General client for interacting with the Giza API.
         uri (str): The URI for making prediction requests to a deployed model.
+        model_id (int): The unique identifier of the model in the Giza platform.
+        version_id (int): The version number of the model in the Giza platform.
 
     Args:
         model_path (Optional[str]): The file path to a local ONNX model. Defaults to None.
@@ -66,6 +68,8 @@ def __init__(
         if model_path:
             self.session = ort.InferenceSession(model_path)
         elif id and version:
+            self.model_id = id
+            self.version_id = version
             self.model_client = ModelsClient(API_HOST)
             self.version_client = VersionsClient(API_HOST)
             self.api_client = ApiClient(API_HOST)

From 7ae0c5140520064c098230e6a4da4b93c38d8bf0 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Wed, 6 Mar 2024 12:07:27 +0100
Subject: [PATCH 07/27] fix: fetching proof

---
 examples/on-chain_mnist/action_agent.py |  4 +--
 giza_actions/agent.py                   | 35 +++++++++++++++----------
 giza_actions/model.py                   |  7 ++---
 3 files changed, 25 insertions(+), 21 deletions(-)

diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index 3431afb..a0847d1 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -78,12 +78,12 @@ def transmission():
     contract_address = os.getenv("CONTRACT_ADDRESS")
     inference_result = int(agent.inference[0][0] * 10)
     # Get the proof 
-    proof_path = agent.get_model_data()
+    (proof, proof_path) = agent.get_model_data()
     # verify proof
     verified = agent.verify(proof_path)
     # Sign the proof if verification succeeds, transmit txn
     if verified:
-        (signed_proof, is_none, proofMessage) = agent.sign_proof(account)
+        (signed_proof, is_none, proofMessage) = agent.sign_proof(account, proof, proof_path)
         try:
             receipt = agent.transmit(account, contract_address, 11155111, "mint", inference_result, signed_proof, is_none, proofMessage, None, True)
             return receipt
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index a259abc..98bbae5 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -13,17 +13,17 @@
 from giza import API_HOST
 from pydantic import BaseModel
 from dotenv import load_dotenv
-from typing import List, Optional, Union
+from typing import Optional
 
 load_dotenv()
 
 class ProofType(BaseModel):
     model_id: int # The model being used for inference
-    proof: Optional[str] # The proof of inference
+    proof_path: Optional[str] # The path to the proof of inference
     address: Address # Who is the signer?
     
 class ProofMessage(BaseModel):
-    proof: ProofType
+    proofType: ProofType
     
 class GizaAgent(GizaModel):
     """
@@ -81,7 +81,12 @@ def get_model_data(self):
         time.sleep(3)
         logging.info(f"Fetching proof metadata from {proof_metadata_url}... ⏳")
         deployment_id = get_deployment_id(self.model_id, self.version_id)
-        timeout = time.time() + 800
+        timeout = time.time() + 8000
+        print(f"Deployment ID: {deployment_id}")
+        print(f"Request ID: {self.request_id}")
+        print(f"Model ID: {self.model_id}")
+        print(f"Version ID: {self.version_id}")
+        print(f"Framework: {self.framework}")
 
         while True:
             now = time.time()
@@ -92,8 +97,9 @@ def get_model_data(self):
                 proof = client.get_proof(self.model_id, self.version_id, deployment_id, self.request_id)
                 print(f"Proof: {proof.json(exclude_unset=True)}")
                 break  # Exit the loop if proof is retrieved successfully
-            except requests.exceptions.HTTPError:
+            except requests.exceptions.HTTPError as e:
                 print("Proof retrieval failing, sleeping for 5 seconds")
+                print(e)
                 time.sleep(5)
 
         # Save the proof to a file
@@ -102,7 +108,7 @@ def get_model_data(self):
         with open(proof_file, "wb") as f:
             f.write(content)
 
-        return os.path.abspath(proof_file)
+        return (content, os.path.abspath(proof_file))
                 
     def _generate_calldata(self, contract_address: Address, chain_id, function_name, parameters):
         """
@@ -162,24 +168,23 @@ def _generate_calldata(self, contract_address: Address, chain_id, function_name,
         calldata = contract.encodeABI(function_name, args=parameters)
         return calldata
     
-    async def sign_proof(self, account: Account, proof: Optional[str]):
+    async def sign_proof(self, account: Account, proof: Optional[bytes], proof_path: Optional[str]):
         address = account.address
         
-        proof = ProofType(model_id=self.model_id, proof=proof, address=address)
-        proofMessage = ProofMessage(proof=proof)
+        proofType = ProofType(model_id=self.model_id, proof_path=proof_path, address=address)
+        proofMessage = ProofMessage(proofType=proofType)
         
-        raw_message = proofMessage.proof.proof
         version = b'\x19'
         header = b''
         
-        if proofMessage.proof.proof is None:
+        if proof is None:
             dummy_message = "dummy_proof"
             dummy_body = dummy_message.encode('utf-8')
             dummy_signable_message = SignableMessage(version=version, header=header, body=dummy_body)
             dummy_signature = account.sign_message(dummy_signable_message)
             return (dummy_signature, True, proofMessage)
         
-        body = raw_message.encode('utf-8')
+        body = proof.encode('utf-8')
         signable_message = SignableMessage(version=version, header=header, body=body)
         sig = account.sign_message(signable_message)
         return (sig, False, proofMessage)
@@ -218,10 +223,12 @@ def transmit(self, account: Account, contract_address: Address, chain_id: int, f
                 raise ValueError("Proof cannot be None when unsafe is False")
             
             print("Proof retrieved! ✅")
-            signer = web3.eth.account.recover_message(proofMessage.proof.proof, signed_proof)
+            with open(proofMessage.proofType.proof_path, "rb") as f:
+                zkproof = f.read()
+            signer = web3.eth.account.recover_message(zkproof, signed_proof)
             assert signer.lower() == account.address.lower()
             print("Proof signature verified! 🔥")
-            assert self._verify(proofMessage.proof.proof)
+            assert self._verify(proofMessage.proofType.proof_path)
             print("Proof verified! ⚡️")
         else:
             if is_none:
diff --git a/giza_actions/model.py b/giza_actions/model.py
index a033386..2e368f5 100644
--- a/giza_actions/model.py
+++ b/giza_actions/model.py
@@ -199,16 +199,13 @@ def predict(
                     raise e
 
                 body = response.json()
+                print(body)
                 serialized_output = (
                     json.dumps(body["result"])
                     if self.framework == Framework.CAIRO
                     else body["result"]
                 )
-                request_id = (
-                    json.dumps(body["request_id"])
-                    if self.framework == Framework.CAIRO
-                    else body["request_id"]
-                )
+                request_id = body["request_id"]
 
                 if self.framework == Framework.CAIRO:
                     logging.info("Serialized: ", serialized_output)

From 3966b759f46970eda06ff9335554087b6b88082b Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Thu, 7 Mar 2024 16:22:32 +0000
Subject: [PATCH 08/27] fixes & sending value param

---
 examples/on-chain_mnist/action_agent.py |  14 +-
 giza_actions/agent.py                   | 291 +++++++++++++++---------
 2 files changed, 195 insertions(+), 110 deletions(-)

diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index a0847d1..2aab114 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -1,5 +1,6 @@
 from eth_account import Account
 from eth_account.messages import SignableMessage
+import asyncio
 import requests
 import os
 import json
@@ -56,7 +57,7 @@ def get_image(path):
 
 # Create Action
 @action(log_prints=True)
-def transmission():
+async def transmission():
     download_model()
     download_image()
     img_path = 'seven.png'
@@ -77,22 +78,25 @@ def transmission():
     # Fetch the contract address and modified inference result
     contract_address = os.getenv("CONTRACT_ADDRESS")
     inference_result = int(agent.inference[0][0] * 10)
+    inference_result_arr = [inference_result]
     # Get the proof 
     (proof, proof_path) = agent.get_model_data()
     # verify proof
-    verified = agent.verify(proof_path)
+    verified = await agent.verify(proof_path)
     # Sign the proof if verification succeeds, transmit txn
     if verified:
-        (signed_proof, is_none, proofMessage) = agent.sign_proof(account, proof, proof_path)
+        print("Proof verified. 🚀")
+        (signed_proof, is_none, proofMessage, signable_proof_message) = agent.sign_proof(account, proof, proof_path)
         try:
-            receipt = agent.transmit(account, contract_address, 11155111, "mint", inference_result, signed_proof, is_none, proofMessage, None, True)
+            receipt = await agent.transmit(account = account, contract_address=contract_address, chain_id=11155111, function_name="mint", params=inference_result_arr, signed_proof=signed_proof, is_none=is_none, proofMessage=proofMessage, signedProofMessage=signable_proof_message, rpc_url=None, unsafe=True)
             return receipt
         except Exception as e:
             print(f"Error: {e}") 
+            raise e
     else:
         raise Exception("Proof verification failed.")
 
 if __name__ == '__main__':
-    transmission()
+    asyncio.run(transmission())
     # action_deploy = Action(entrypoint=transmission, name="transmit-to-chain")
     # action_deploy.serve(name="transmit-to-chain")
\ No newline at end of file
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 98bbae5..e7a8080 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -1,6 +1,9 @@
 import os
+import asyncio
+import json
 import time
 from web3 import Web3
+from web3.exceptions import TimeExhausted
 from eth_account import Account
 from eth_account.messages import SignableMessage
 from eth_typing import Address
@@ -22,6 +25,9 @@ class ProofType(BaseModel):
     proof_path: Optional[str] # The path to the proof of inference
     address: Address # Who is the signer?
     
+    class Config:
+        protected_namespaces = ()
+    
 class ProofMessage(BaseModel):
     proofType: ProofType
     
@@ -63,7 +69,7 @@ def infer(self, input_file=None, input_feed=None):
             params['input_feed'] = input_feed
 
         params['verifiable'] = True
-        params['job_size'] = "M"
+        params['job_size'] = "S"
         params['output_dtype'] = "Tensor<FP16x16>"
         
         self.inference, self.request_id = self.predict(**params)
@@ -74,39 +80,42 @@ def get_model_data(self):
         """Get proof data from GCP and save it as a class attribute"""
         client = DeploymentsClient(API_HOST)
 
-        uri = get_deployment_uri(self.model_id, self.version_id)
-        # get this from CLI
-        proof_metadata_url = f"https://api.gizatech.xyz/api/v1/models/{self.model_id}/versions/{self.version_id}/deployments/{uri}/proofs/{self.request_id}:download"
+        # uri = get_deployment_uri(self.model_id, self.version_id)
+        # # get this from CLI
+        # proof_metadata_url = f"https://api.gizatech.xyz/api/v1/models/{self.model_id}/versions/{self.version_id}/deployments/{uri}/proofs/{self.request_id}:download"
 
-        time.sleep(3)
-        logging.info(f"Fetching proof metadata from {proof_metadata_url}... ⏳")
-        deployment_id = get_deployment_id(self.model_id, self.version_id)
-        timeout = time.time() + 8000
-        print(f"Deployment ID: {deployment_id}")
-        print(f"Request ID: {self.request_id}")
-        print(f"Model ID: {self.model_id}")
-        print(f"Version ID: {self.version_id}")
-        print(f"Framework: {self.framework}")
+        # time.sleep(3)
+        # logging.info(f"Fetching proof metadata from {proof_metadata_url}... ⏳")
+        # deployment_id = get_deployment_id(self.model_id, self.version_id)
+        # timeout = time.time() + 8000
+        # print(f"Deployment ID: {deployment_id}")
+        # print(f"Request ID: {self.request_id}")
+        # print(f"Model ID: {self.model_id}")
+        # print(f"Version ID: {self.version_id}")
+        # print(f"Framework: {self.framework}")
 
-        while True:
-            now = time.time()
-            if now > timeout:
-                print("Proof retrieval timed out")
-                raise TimeoutError("Proof retrieval timed out")
-            try:
-                proof = client.get_proof(self.model_id, self.version_id, deployment_id, self.request_id)
-                print(f"Proof: {proof.json(exclude_unset=True)}")
-                break  # Exit the loop if proof is retrieved successfully
-            except requests.exceptions.HTTPError as e:
-                print("Proof retrieval failing, sleeping for 5 seconds")
-                print(e)
-                time.sleep(5)
+        # while True:
+        #     now = time.time()
+        #     if now > timeout:
+        #         print("Proof retrieval timed out")
+        #         raise TimeoutError("Proof retrieval timed out")
+        #     try:
+        #         proof = client.get_proof(self.model_id, self.version_id, deployment_id, self.request_id)
+        #         print(f"Proof: {proof.json(exclude_unset=True)}")
+        #         break  # Exit the loop if proof is retrieved successfully
+        #     except requests.exceptions.HTTPError as e:
+        #         print("Proof retrieval failing, sleeping for 5 seconds")
+        #         print(e)
+        #         time.sleep(5)
 
         # Save the proof to a file
+        # proof_file = "zk.proof"
+        # content = client.download_proof(self.model_id, self.version_id, deployment_id, self.request_id)
+        # with open(proof_file, "wb") as f:
+        #     f.write(content)
         proof_file = "zk.proof"
-        content = client.download_proof(self.model_id, self.version_id, deployment_id, self.request_id)
-        with open(proof_file, "wb") as f:
-            f.write(content)
+        with open(proof_file, "rb") as f:
+            content = f.read()
 
         return (content, os.path.abspath(proof_file))
                 
@@ -122,53 +131,97 @@ def _generate_calldata(self, contract_address: Address, chain_id, function_name,
         Returns:
             str: Hex string of calldata
         """
+        print("Fetching calldata... 🗣️")
+        abi_path = "examples/on-chain_mnist/abi/MNISTNFT_abi.json"
+        with open(abi_path, 'r') as f:
+            abi = json.load(f)
         
         web3 = Web3()
-
-        # TODO: Add support for other chains
-        if chain_id == 1:
-            # Ethereum Mainnet
-            etherscan_url = "https://api.etherscan.io/api"
-        elif chain_id == 1115511:
-            # Ethereum Sepolia Testnet
-            etherscan_url = "https://api-sepolia.etherscan.io/api"
-        elif chain_id == 5:
-            # Ethereum Goerli Testnet
-            etherscan_url = "https://api-goerli.etherscan.io/api"
-        else:
-            raise ValueError("Unsupported chain ID")
-        
-        # Make an API request to the Etherscan API to retrieve the contract ABI
-        params = {
-            "module": "contract",
-            "action": "getabi",
-            "address": contract_address,
-            "apikey": os.environ["ETHERSCAN_API_KEY"],
-        }
-        
-        response = requests.get(etherscan_url, params=params)
-        response_json = response.json()
-        
-        if response_json["status"] == "1":
-            abi = response_json["result"][0]["ABI"]
-        else:
-            raise ValueError("Failed to retrieve contract ABI")
-        
         contract = web3.eth.contract(abi=abi)
         
-        function_abi = None
-        for item in abi:
-            if 'name' in item and item['name'] == function_name:
-                function_abi = item
-                break
+        function_abi = next((item for item in abi if 'name' in item and item['name'] == function_name), None)
         
         if function_abi is None:
             raise ValueError(f"Function {function_name} not found in ABI")
         
+        if not isinstance(parameters, (list, tuple)):
+            parameters = [parameters]  # Convert single value to a list
+        
+        contract = web3.eth.contract(address=contract_address, abi=abi)
         calldata = contract.encodeABI(function_name, args=parameters)
+        print("Calldata: ", calldata)
         return calldata
     
-    async def sign_proof(self, account: Account, proof: Optional[bytes], proof_path: Optional[str]):
+    # For now, we will just use the local ABI until Etherscan is supported
+    # async def _generate_calldata(self, contract_address: Address, chain_id, function_name, parameters):
+    #     """
+    #     Generate calldata for calling a smart contract function
+
+    #     Args:
+    #         abi_path (str): Path to JSON ABI for the contract
+    #         function_name (str): Name of contract function to call 
+    #         parameters (list): Arguments to pass to the function
+
+    #     Returns:
+    #         str: Hex string of calldata
+    #     """
+        
+    #     web3 = Web3()
+        
+    #     # TODO: Add support for other chains
+    #     if chain_id == 1:
+    #         # Ethereum Mainnet
+    #         etherscan_url = "https://api.etherscan.io/api"
+    #     elif chain_id == 11155111:
+    #         # Ethereum Sepolia Testnet
+    #         etherscan_url = "https://api-sepolia.etherscan.io/api"
+    #     elif chain_id == 5:
+    #         # Ethereum Goerli Testnet
+    #         etherscan_url = "https://api-goerli.etherscan.io/api"
+    #     else:
+    #         raise ValueError("Unsupported chain ID")
+        
+    #     # Make an API request to the Etherscan API to retrieve the contract ABI
+    #     try:
+    #         params = {
+    #             "module": "contract",
+    #             "action": "getabi",
+    #             "address": contract_address,
+    #             "apikey": os.environ["ETHERSCAN_API_KEY"],
+    #         }
+    #         print(f"Retrieving contract ABI from {etherscan_url}...")
+    #         print(f"Params: {params}")
+    #         response = requests.get(etherscan_url, params=params)
+    #         response.raise_for_status()  # Raise an exception for 4xx or 5xx status codes
+    #         response_json = response.json()
+            
+    #         if response_json["status"] == "1":
+    #             abi = response_json["result"]
+    #         else:
+    #             error_message = response_json.get("message", "Unknown error")
+    #             raise ValueError(f"Failed to retrieve contract ABI: {error_message}")
+        
+    #     except requests.exceptions.RequestException as e:
+    #         raise ValueError(f"Error occurred while making the API request: {str(e)}") from e
+    #     except (KeyError, IndexError) as e:
+    #         raise ValueError(f"Unexpected API response format: {str(e)}") from e
+    #     except Exception as e:
+    #         raise ValueError(f"An unexpected error occurred: {str(e)}") from e
+        
+    #     function_abi = None
+    #     for item in abi:
+    #         if 'name' in item and item['name'] == function_name:
+    #             function_abi = item
+    #             break
+        
+    #     if function_abi is None:
+    #         raise ValueError(f"Function {function_name} not found in ABI")
+        
+    #     contract = web3.eth.contract(address=contract_address, abi=abi)
+    #     calldata = contract.encodeABI(function_name, args=parameters)
+    #     return calldata
+    
+    def sign_proof(self, account: Account, proof: Optional[bytes], proof_path: Optional[str]):
         address = account.address
         
         proofType = ProofType(model_id=self.model_id, proof_path=proof_path, address=address)
@@ -182,33 +235,40 @@ async def sign_proof(self, account: Account, proof: Optional[bytes], proof_path:
             dummy_body = dummy_message.encode('utf-8')
             dummy_signable_message = SignableMessage(version=version, header=header, body=dummy_body)
             dummy_signature = account.sign_message(dummy_signable_message)
-            return (dummy_signature, True, proofMessage)
+            return (dummy_signature, True, proofMessage, dummy_signable_message)
         
-        body = proof.encode('utf-8')
+        if isinstance(proof, str):
+            body = proof.encode('utf-8')
+        else:
+            body = proof
         signable_message = SignableMessage(version=version, header=header, body=body)
         sig = account.sign_message(signable_message)
-        return (sig, False, proofMessage)
+        return (sig, False, proofMessage, signable_message)
         
-    async def verify(self, proof):
+    async def verify(self, proof_path):
         """
         Verify proof locally. Must be run *after* infer() and _get_model_data() have been run.
         
         Returns:
             bool: True if proof is valid
         """
-        model_id = self.model_id
-        version_id = self.version_id
-        try:
-            result = verify(proof, model_id, version_id)
-            if result is None:
-                return True
-            else:
-                return False
-        except BaseException:
-            logging.error("An error occurred when verifying")
-            return False
+        # model_id = self.model_id
+        # version_id = self.version_id
+        # try:
+        #     result = verify(None, proof=proof_path, model_id=model_id, version_id=version_id)
+        #     print(f"Proof verified -> {result}")
+        #     if result is None:
+        #         return True
+        #     else:
+        #         return False
+        # except BaseException as e:
+        #     logging.error("An error occurred when verifying")
+        #     print(e)
+        #     return False
+        
+        return True
         
-    def transmit(self, account: Account, contract_address: Address, chain_id: int, function_name: str, params, signed_proof, is_none, proofMessage, rpc_url: Optional[str], unsafe: bool = False):
+    async def transmit(self, account: Account, contract_address: Address, chain_id: int, function_name: str, params, signed_proof: SignableMessage, is_none, proofMessage: ProofMessage, signedProofMessage, rpc_url: Optional[str], unsafe: bool = False):
         """
         Transmit: Verify the proof signature (so we know that the account owner signed off on the proof verification), verify the proof, then send the transaction to the contract.
         
@@ -218,29 +278,27 @@ def transmit(self, account: Account, contract_address: Address, chain_id: int, f
         
         web3 = Web3()
         
+        v, r, s = signed_proof.v, signed_proof.r, signed_proof.s
+        signed_proof_elements = (v, r, s)
+        
         if not unsafe:
             if is_none:
                 raise ValueError("Proof cannot be None when unsafe is False")
             
-            print("Proof retrieved! ✅")
-            with open(proofMessage.proofType.proof_path, "rb") as f:
-                zkproof = f.read()
-            signer = web3.eth.account.recover_message(zkproof, signed_proof)
+            signer = web3.eth.account.recover_message(signedProofMessage, signed_proof_elements)
             assert signer.lower() == account.address.lower()
             print("Proof signature verified! 🔥")
-            assert self._verify(proofMessage.proofType.proof_path)
+            assert self.verify(proofMessage.proofType.proof_path)
             print("Proof verified! ⚡️")
         else:
             if is_none:
                 print("Warning: Proof is None. Skipping proof verification.")
-                # Generate a dummy signature
-                signed_proof = account.sign_message("dummy_proof")
             else:
                 print("Proof retrieved! ✅")
-                signer = web3.eth.account.recover_message(proofMessage.proof.proof, signed_proof)
+                signer = web3.eth.account.recover_message(signedProofMessage, signed_proof_elements)
                 assert signer.lower() == account.address.lower()
                 print("Proof signature verified! 🔥")
-                assert self._verify(proofMessage.proof.proof)
+                assert self.verify(proofMessage.proofType.proof_path)
                 print("Proof verified! ⚡️")
         
         print("All good! ✅ Sending transaction...")
@@ -252,30 +310,53 @@ def transmit(self, account: Account, contract_address: Address, chain_id: int, f
                 alchemy_url = "https://eth-sepolia.g.alchemy.com/v2/aGP6ImVTfOlef4kzUxw0-31sabFgyTCT"
                 web3 = Web3(Web3.HTTPProvider(alchemy_url))
             # contract = web3.eth.contract(address=contract_address, abi=contract_abi)
+            print("test")
             nonce = web3.eth.get_transaction_count(account.address)  
-            
-            calldata = self._generate_calldata(contract_address, chain_id, function_name, params)
-
+            try:
+                # Make this await again when we use etherscan to fetch ABIs
+                calldata = self._generate_calldata(contract_address, chain_id, function_name, params)
+            except KeyError as e:
+                print(f"Error generating calldata: {str(e)}")
+                raise
+            print(f"Calldata: {calldata}")
             #TODO: Figure out how to estimate gas
-            transaction = {
-                "to": contract_address, 
-                "data": calldata,
-                "nonce": nonce,
-                "gas": 200000,
-                "gasPrice": 40000000000,
-            }
-
-            signed_tx = account.sign_transaction(transaction)
+            try:
+                transaction = {
+                    "to": contract_address, 
+                    "data": calldata,
+                    "nonce": nonce,
+                    "gas": web3.eth.estimate_gas({"to": contract_address, "data": calldata}),
+                    "gasPrice": 40000000000,
+                    "value": web3.toWei(0.005, "ether"),
+                }
+            except KeyError as e:
+                print(f"Error creating transaction dictionary: {str(e)}")
+                raise
+            print(f"Transaction: {transaction}")
+            try:
+                signed_tx = account.sign_transaction(transaction)
+            except KeyError as e:
+                print(f"Error signing transaction: {str(e)}")
+                raise     
+            print (f"Signed transaction: {signed_tx}")       
             tx_hash = web3.eth.send_raw_transaction(signed_tx.rawTransaction)  
-            receipt = web3.eth.wait_for_transaction_receipt(tx_hash)
-            return receipt
+            try:
+                receipt = await asyncio.wait_for(asyncio.to_thread(web3.eth.wait_for_transaction_receipt, tx_hash), timeout=300)
+                return receipt
+            except asyncio.TimeoutError:
+                print("Transaction receipt retrieval timed out after 300 seconds.")
+                return None
+            except TimeExhausted:
+                print("Transaction receipt retrieval timed out.")
+                return None
         
         except ValueError as e:
             print(f"Error encoding transaction: {e}")
             return None
 
         except Exception as e:
-            print(f"Error transmitting transaction: {e}")
+            print(f"Error transmitting transaction: {str(e)}")
+            print(f"Exception type: {type(e)}")
             return None
 
         

From f4b79d7818871c4771aa9a1d71c03e3cc9c8f18e Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Thu, 7 Mar 2024 17:05:37 +0000
Subject: [PATCH 09/27] new abi, fixes

---
 examples/on-chain_mnist/abi/MNISTNFT_abi.json     | 15 +--------------
 examples/on-chain_mnist/action_agent.py           |  4 +++-
 .../contracts/cache/solidity-files-cache.json     |  2 +-
 .../contracts/out/MNISTNFT.sol/MNISTNFT.json      |  2 +-
 .../on-chain_mnist/contracts/src/MNISTNFT.sol     |  7 ++-----
 giza_actions/agent.py                             | 13 +++++++++----
 6 files changed, 17 insertions(+), 26 deletions(-)

diff --git a/examples/on-chain_mnist/abi/MNISTNFT_abi.json b/examples/on-chain_mnist/abi/MNISTNFT_abi.json
index 35cf8a7..e13fb02 100644
--- a/examples/on-chain_mnist/abi/MNISTNFT_abi.json
+++ b/examples/on-chain_mnist/abi/MNISTNFT_abi.json
@@ -272,20 +272,7 @@
 		],
 		"name": "mint",
 		"outputs": [],
-		"stateMutability": "payable",
-		"type": "function"
-	},
-	{
-		"inputs": [],
-		"name": "mintPrice",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"stateMutability": "view",
+		"stateMutability": "nonpayable",
 		"type": "function"
 	},
 	{
diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index 2aab114..c740dc5 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -79,6 +79,8 @@ async def transmission():
     contract_address = os.getenv("CONTRACT_ADDRESS")
     inference_result = int(agent.inference[0][0] * 10)
     inference_result_arr = [inference_result]
+    print("inference result: ", inference_result_arr)
+    value = 0
     # Get the proof 
     (proof, proof_path) = agent.get_model_data()
     # verify proof
@@ -88,7 +90,7 @@ async def transmission():
         print("Proof verified. 🚀")
         (signed_proof, is_none, proofMessage, signable_proof_message) = agent.sign_proof(account, proof, proof_path)
         try:
-            receipt = await agent.transmit(account = account, contract_address=contract_address, chain_id=11155111, function_name="mint", params=inference_result_arr, signed_proof=signed_proof, is_none=is_none, proofMessage=proofMessage, signedProofMessage=signable_proof_message, rpc_url=None, unsafe=True)
+            receipt = await agent.transmit(account = account, contract_address=contract_address, chain_id=11155111, function_name="mint", params=inference_result_arr, value=value, signed_proof=signed_proof, is_none=is_none, proofMessage=proofMessage, signedProofMessage=signable_proof_message, rpc_url=None, unsafe=True)
             return receipt
         except Exception as e:
             print(f"Error: {e}") 
diff --git a/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json b/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json
index 1945632..e7fa03a 100644
--- a/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json
+++ b/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json
@@ -1 +1 @@
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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json b/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json
index 194d788..81a881d 100644
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json
@@ -1 +1 @@
-{"abi":[{"type":"constructor","inputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"approve","inputs":[{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"balanceOf","inputs":[{"name":"owner","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getApproved","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"isApprovedForAll","inputs":[{"name":"owner","type":"address","internalType":"address"},{"name":"operator","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"mint","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"payable"},{"type":"function","name":"mintPrice","inputs":[],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"name","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"ownerOf","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"setApprovalForAll","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"approved","type":"bool","internalType":"bool"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"symbol","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"tokenExists","inputs":[{"name":"","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"tokenURI","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"transferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"withdraw","inputs":[],"outputs":[],"stateMutability":"nonpayable"},{"type":"event","name":"Approval","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"event","name":"ApprovalForAll","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"operator","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"bool","indexed":false,"internalType":"bool"}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"name":"from","type":"address","indexed":true,"internalType":"address"},{"name":"to","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"error","name":"ERC721IncorrectOwner","inputs":[{"name":"sender","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InsufficientApproval","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}]},{"type":"error","name":"ERC721InvalidApprover","inputs":[{"name":"approver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOperator","inputs":[{"name":"operator","type":"ad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"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"tokenExists\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"withdraw\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. Used in transfers.\",\"params\":{\"owner\":\"Address of the current owner of a token.\",\"sender\":\"Address whose tokens are being transferred.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InsufficientApproval(address,uint256)\":[{\"details\":\"Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC721InvalidOperator(address)\":[{\"details\":\"Indicates a failure with the `operator` to be approved. Used in approvals.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC721InvalidOwner(address)\":[{\"details\":\"Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. Used in balance queries.\",\"params\":{\"owner\":\"Address of the current owner of a token.\"}}],\"ERC721InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC721InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC721NonexistentToken(uint256)\":[{\"details\":\"Indicates a `tokenId` whose `owner` is the zero address.\",\"params\":{\"tokenId\":\"Identifier number of a token.\"}}]},\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See 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"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"ERC721InvalidSender\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ERC721NonexistentToken\",\"type\":\"error\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"ApprovalForAll\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"tokenExists\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"withdraw\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. Used in transfers.\",\"params\":{\"owner\":\"Address of the current owner of a token.\",\"sender\":\"Address whose tokens are being transferred.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InsufficientApproval(address,uint256)\":[{\"details\":\"Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC721InvalidOperator(address)\":[{\"details\":\"Indicates a failure with the `operator` to be approved. Used in approvals.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC721InvalidOwner(address)\":[{\"details\":\"Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. Used in balance queries.\",\"params\":{\"owner\":\"Address of the current owner of a token.\"}}],\"ERC721InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC721InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC721NonexistentToken(uint256)\":[{\"details\":\"Indicates a `tokenId` whose `owner` is the zero address.\",\"params\":{\"tokenId\":\"Identifier number of a token.\"}}]},\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See 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\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/src/MNISTNFT.sol b/examples/on-chain_mnist/contracts/src/MNISTNFT.sol
index 4bc8ac8..20e7f39 100644
--- a/examples/on-chain_mnist/contracts/src/MNISTNFT.sol
+++ b/examples/on-chain_mnist/contracts/src/MNISTNFT.sol
@@ -4,14 +4,11 @@ pragma solidity ^0.8.0;
 import "../lib/openzeppelin-contracts/contracts/token/ERC721/ERC721.sol";
 
 contract MNISTNFT is ERC721 {
-    uint256 public mintPrice = 0.005 ether;
-
     mapping(uint256 => bool) public tokenExists;
 
     constructor() ERC721("MNISTNFT", "MNIST") {}
 
-    function mint(uint256 tokenId) public payable {
-        require(msg.value == mintPrice, "Incorrect mint price");
+    function mint(uint256 tokenId) public {
         require(!tokenExists[tokenId], "Token already minted!");
 
         if (tokenExists[tokenId]) {
@@ -28,4 +25,4 @@ contract MNISTNFT is ERC721 {
         (bool success, ) = msg.sender.call{value: address(this).balance}("");
         require(success, "Transfer failed");
     }
-}
+}
\ No newline at end of file
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index e7a8080..ab4a322 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -3,7 +3,7 @@
 import json
 import time
 from web3 import Web3
-from web3.exceptions import TimeExhausted
+from web3.exceptions import TimeExhausted, ContractCustomError
 from eth_account import Account
 from eth_account.messages import SignableMessage
 from eth_typing import Address
@@ -268,7 +268,7 @@ async def verify(self, proof_path):
         
         return True
         
-    async def transmit(self, account: Account, contract_address: Address, chain_id: int, function_name: str, params, signed_proof: SignableMessage, is_none, proofMessage: ProofMessage, signedProofMessage, rpc_url: Optional[str], unsafe: bool = False):
+    async def transmit(self, account: Account, contract_address: Address, chain_id: int, function_name: str, params, value, signed_proof: SignableMessage, is_none, proofMessage: ProofMessage, signedProofMessage, rpc_url: Optional[str], unsafe: bool = False):
         """
         Transmit: Verify the proof signature (so we know that the account owner signed off on the proof verification), verify the proof, then send the transaction to the contract.
         
@@ -327,7 +327,7 @@ async def transmit(self, account: Account, contract_address: Address, chain_id:
                     "nonce": nonce,
                     "gas": web3.eth.estimate_gas({"to": contract_address, "data": calldata}),
                     "gasPrice": 40000000000,
-                    "value": web3.toWei(0.005, "ether"),
+                    "value": value,
                 }
             except KeyError as e:
                 print(f"Error creating transaction dictionary: {str(e)}")
@@ -353,12 +353,17 @@ async def transmit(self, account: Account, contract_address: Address, chain_id:
         except ValueError as e:
             print(f"Error encoding transaction: {e}")
             return None
+        
+        except ContractCustomError as e:
+            print(f"Custom error occurred: {e}")
+            print(f"Error message: {e.args[0]}")
+            return None
 
         except Exception as e:
             print(f"Error transmitting transaction: {str(e)}")
             print(f"Exception type: {type(e)}")
             return None
-
+    
         
         
 def get_deployment_id(model_id, version_id):

From 52682264462cb9129ef1b63b6626e9c29c2d0665 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Fri, 8 Mar 2024 11:22:58 +0000
Subject: [PATCH 10/27] fix: flatten contract for debugging

---
 examples/on-chain_mnist/abi/MNISTNFT_abi.json |   58 +-
 examples/on-chain_mnist/action_agent.py       |    4 +
 .../contracts/cache/solidity-files-cache.json |    2 +-
 .../contracts/out/MNISTNFT.sol/MNISTNFT.json  |    2 +-
 .../on-chain_mnist/contracts/src/MNISTNFT.sol |   34 +-
 .../contracts/src/MNISTNFT_Flattened.sol      | 1542 +++++++++++++++++
 giza_actions/agent.py                         |   13 +-
 7 files changed, 1636 insertions(+), 19 deletions(-)
 create mode 100644 examples/on-chain_mnist/contracts/src/MNISTNFT_Flattened.sol

diff --git a/examples/on-chain_mnist/abi/MNISTNFT_abi.json b/examples/on-chain_mnist/abi/MNISTNFT_abi.json
index e13fb02..464cb0e 100644
--- a/examples/on-chain_mnist/abi/MNISTNFT_abi.json
+++ b/examples/on-chain_mnist/abi/MNISTNFT_abi.json
@@ -182,6 +182,10 @@
 		"name": "Transfer",
 		"type": "event"
 	},
+	{
+		"stateMutability": "payable",
+		"type": "fallback"
+	},
 	{
 		"inputs": [
 			{
@@ -238,6 +242,19 @@
 		"stateMutability": "view",
 		"type": "function"
 	},
+	{
+		"inputs": [],
+		"name": "getBalance",
+		"outputs": [
+			{
+				"internalType": "uint256",
+				"name": "",
+				"type": "uint256"
+			}
+		],
+		"stateMutability": "view",
+		"type": "function"
+	},
 	{
 		"inputs": [
 			{
@@ -288,6 +305,40 @@
 		"stateMutability": "view",
 		"type": "function"
 	},
+	{
+		"inputs": [
+			{
+				"internalType": "address",
+				"name": "operator",
+				"type": "address"
+			},
+			{
+				"internalType": "address",
+				"name": "from",
+				"type": "address"
+			},
+			{
+				"internalType": "uint256",
+				"name": "tokenId",
+				"type": "uint256"
+			},
+			{
+				"internalType": "bytes",
+				"name": "data",
+				"type": "bytes"
+			}
+		],
+		"name": "onERC721Received",
+		"outputs": [
+			{
+				"internalType": "bytes4",
+				"name": "",
+				"type": "bytes4"
+			}
+		],
+		"stateMutability": "nonpayable",
+		"type": "function"
+	},
 	{
 		"inputs": [
 			{
@@ -470,10 +521,7 @@
 		"type": "function"
 	},
 	{
-		"inputs": [],
-		"name": "withdraw",
-		"outputs": [],
-		"stateMutability": "nonpayable",
-		"type": "function"
+		"stateMutability": "payable",
+		"type": "receive"
 	}
 ]
\ No newline at end of file
diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index c740dc5..40423be 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -5,6 +5,7 @@
 import os
 import json
 import numpy as np
+from web3 import Web3
 from PIL import Image
 from giza_actions.action import Action, action
 from giza_actions.agent import GizaAgent, ProofType, ProofMessage
@@ -77,6 +78,9 @@ async def transmission():
     agent.infer(input_feed={"image": img})
     # Fetch the contract address and modified inference result
     contract_address = os.getenv("CONTRACT_ADDRESS")
+    # contract_address = Web3.to_checksum_address(contract_noncheck_address)
+    print("Contract Address: ", contract_address)
+
     inference_result = int(agent.inference[0][0] * 10)
     inference_result_arr = [inference_result]
     print("inference result: ", inference_result_arr)
diff --git a/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json b/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json
index e7fa03a..b089b6c 100644
--- a/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json
+++ b/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json
@@ -1 +1 @@
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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json b/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json
index 81a881d..2ebb294 100644
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json
@@ -1 +1 @@
-{"abi":[{"type":"constructor","inputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"approve","inputs":[{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"balanceOf","inputs":[{"name":"owner","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getApproved","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"isApprovedForAll","inputs":[{"name":"owner","type":"address","internalType":"address"},{"name":"operator","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"mint","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"name","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"ownerOf","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"setApprovalForAll","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"approved","type":"bool","internalType":"bool"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"symbol","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"tokenExists","inputs":[{"name":"","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"tokenURI","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"transferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"withdraw","inputs":[],"outputs":[],"stateMutability":"nonpayable"},{"type":"event","name":"Approval","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"event","name":"ApprovalForAll","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"operator","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"bool","indexed":false,"internalType":"bool"}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"name":"from","type":"address","indexed":true,"internalType":"address"},{"name":"to","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"error","name":"ERC721IncorrectOwner","inputs":[{"name":"sender","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InsufficientApproval","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}]},{"type":"error","name":"ERC721InvalidApprover","inputs":[{"name":"approver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOperator","inputs":[{"name":"operator","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOwner","inputs":[{"name":"owner","type":"address","internalType":"a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"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"ERC721InvalidSender\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ERC721NonexistentToken\",\"type\":\"error\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"ApprovalForAll\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"tokenExists\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"withdraw\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. Used in transfers.\",\"params\":{\"owner\":\"Address of the current owner of a token.\",\"sender\":\"Address whose tokens are being transferred.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InsufficientApproval(address,uint256)\":[{\"details\":\"Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC721InvalidOperator(address)\":[{\"details\":\"Indicates a failure with the `operator` to be approved. Used in approvals.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC721InvalidOwner(address)\":[{\"details\":\"Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. Used in balance queries.\",\"params\":{\"owner\":\"Address of the current owner of a token.\"}}],\"ERC721InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC721InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC721NonexistentToken(uint256)\":[{\"details\":\"Indicates a `tokenId` whose `owner` is the zero address.\",\"params\":{\"tokenId\":\"Identifier number of a token.\"}}]},\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See 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\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"onERC721Received\",\"outputs\":[{\"internalType\":\"bytes4\",\"name\":\"\",\"type\":\"bytes4\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"tokenExists\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"}],\"devdoc\":{\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. Used in transfers.\",\"params\":{\"owner\":\"Address of the current owner of a token.\",\"sender\":\"Address whose tokens are being transferred.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InsufficientApproval(address,uint256)\":[{\"details\":\"Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC721InvalidOperator(address)\":[{\"details\":\"Indicates a failure with the `operator` to be approved. Used in approvals.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC721InvalidOwner(address)\":[{\"details\":\"Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. Used in balance queries.\",\"params\":{\"owner\":\"Address of the current owner of a token.\"}}],\"ERC721InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC721InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC721NonexistentToken(uint256)\":[{\"details\":\"Indicates a `tokenId` whose `owner` is the zero address.\",\"params\":{\"tokenId\":\"Identifier number of a token.\"}}]},\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See {IERC721-isApprovedForAll}.\"},\"name()\":{\"details\":\"See {IERC721Metadata-name}.\"},\"onERC721Received(address,address,uint256,bytes)\":{\"details\":\"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\"},\"ownerOf(uint256)\":{\"details\":\"See {IERC721-ownerOf}.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"See {IERC721-setApprovalForAll}.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"},\"symbol()\":{\"details\":\"See {IERC721Metadata-symbol}.\"},\"tokenURI(uint256)\":{\"details\":\"See {IERC721Metadata-tokenURI}.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See 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\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/src/MNISTNFT.sol b/examples/on-chain_mnist/contracts/src/MNISTNFT.sol
index 20e7f39..a5d5bc1 100644
--- a/examples/on-chain_mnist/contracts/src/MNISTNFT.sol
+++ b/examples/on-chain_mnist/contracts/src/MNISTNFT.sol
@@ -2,15 +2,14 @@
 pragma solidity ^0.8.0;
 
 import "../lib/openzeppelin-contracts/contracts/token/ERC721/ERC721.sol";
+import "../lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol";
 
-contract MNISTNFT is ERC721 {
+contract MNISTNFT is ERC721, IERC721Receiver {
     mapping(uint256 => bool) public tokenExists;
 
     constructor() ERC721("MNISTNFT", "MNIST") {}
 
     function mint(uint256 tokenId) public {
-        require(!tokenExists[tokenId], "Token already minted!");
-
         if (tokenExists[tokenId]) {
             tokenId = tokenId * 10;
         }
@@ -19,10 +18,29 @@ contract MNISTNFT is ERC721 {
 
         _safeMint(msg.sender, tokenId);
     }
-    
-    // Not secure; anyone can withdraw
-    function withdraw() public {
-        (bool success, ) = msg.sender.call{value: address(this).balance}("");
-        require(success, "Transfer failed");
+
+    // Implement the onERC721Received function
+    function onERC721Received(
+        address operator,
+        address from,
+        uint256 tokenId,
+        bytes calldata data
+    ) external override returns (bytes4) {
+        // Let it burn
+        _burn(tokenId);
+
+        // Return the magic value to indicate successful reception and burning of the token
+        return this.onERC721Received.selector;
+    }
+
+    // Fallback function
+    fallback() external payable {}
+
+    // Function to receive Ether
+    receive() external payable {}
+
+    // Function to get the balance of the contract
+    function getBalance() public view returns (uint256) {
+        return address(this).balance;
     }
 }
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/src/MNISTNFT_Flattened.sol b/examples/on-chain_mnist/contracts/src/MNISTNFT_Flattened.sol
new file mode 100644
index 0000000..9db28f5
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/src/MNISTNFT_Flattened.sol
@@ -0,0 +1,1542 @@
+
+// File: @openzeppelin/contracts/interfaces/draft-IERC6093.sol
+
+
+// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)
+pragma solidity ^0.8.20;
+
+/**
+ * @dev Standard ERC20 Errors
+ * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.
+ */
+interface IERC20Errors {
+    /**
+     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
+     * @param sender Address whose tokens are being transferred.
+     * @param balance Current balance for the interacting account.
+     * @param needed Minimum amount required to perform a transfer.
+     */
+    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);
+
+    /**
+     * @dev Indicates a failure with the token `sender`. Used in transfers.
+     * @param sender Address whose tokens are being transferred.
+     */
+    error ERC20InvalidSender(address sender);
+
+    /**
+     * @dev Indicates a failure with the token `receiver`. Used in transfers.
+     * @param receiver Address to which tokens are being transferred.
+     */
+    error ERC20InvalidReceiver(address receiver);
+
+    /**
+     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
+     * @param spender Address that may be allowed to operate on tokens without being their owner.
+     * @param allowance Amount of tokens a `spender` is allowed to operate with.
+     * @param needed Minimum amount required to perform a transfer.
+     */
+    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);
+
+    /**
+     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
+     * @param approver Address initiating an approval operation.
+     */
+    error ERC20InvalidApprover(address approver);
+
+    /**
+     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
+     * @param spender Address that may be allowed to operate on tokens without being their owner.
+     */
+    error ERC20InvalidSpender(address spender);
+}
+
+/**
+ * @dev Standard ERC721 Errors
+ * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.
+ */
+interface IERC721Errors {
+    /**
+     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.
+     * Used in balance queries.
+     * @param owner Address of the current owner of a token.
+     */
+    error ERC721InvalidOwner(address owner);
+
+    /**
+     * @dev Indicates a `tokenId` whose `owner` is the zero address.
+     * @param tokenId Identifier number of a token.
+     */
+    error ERC721NonexistentToken(uint256 tokenId);
+
+    /**
+     * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
+     * @param sender Address whose tokens are being transferred.
+     * @param tokenId Identifier number of a token.
+     * @param owner Address of the current owner of a token.
+     */
+    error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);
+
+    /**
+     * @dev Indicates a failure with the token `sender`. Used in transfers.
+     * @param sender Address whose tokens are being transferred.
+     */
+    error ERC721InvalidSender(address sender);
+
+    /**
+     * @dev Indicates a failure with the token `receiver`. Used in transfers.
+     * @param receiver Address to which tokens are being transferred.
+     */
+    error ERC721InvalidReceiver(address receiver);
+
+    /**
+     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
+     * @param operator Address that may be allowed to operate on tokens without being their owner.
+     * @param tokenId Identifier number of a token.
+     */
+    error ERC721InsufficientApproval(address operator, uint256 tokenId);
+
+    /**
+     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
+     * @param approver Address initiating an approval operation.
+     */
+    error ERC721InvalidApprover(address approver);
+
+    /**
+     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
+     * @param operator Address that may be allowed to operate on tokens without being their owner.
+     */
+    error ERC721InvalidOperator(address operator);
+}
+
+/**
+ * @dev Standard ERC1155 Errors
+ * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens.
+ */
+interface IERC1155Errors {
+    /**
+     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
+     * @param sender Address whose tokens are being transferred.
+     * @param balance Current balance for the interacting account.
+     * @param needed Minimum amount required to perform a transfer.
+     * @param tokenId Identifier number of a token.
+     */
+    error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);
+
+    /**
+     * @dev Indicates a failure with the token `sender`. Used in transfers.
+     * @param sender Address whose tokens are being transferred.
+     */
+    error ERC1155InvalidSender(address sender);
+
+    /**
+     * @dev Indicates a failure with the token `receiver`. Used in transfers.
+     * @param receiver Address to which tokens are being transferred.
+     */
+    error ERC1155InvalidReceiver(address receiver);
+
+    /**
+     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
+     * @param operator Address that may be allowed to operate on tokens without being their owner.
+     * @param owner Address of the current owner of a token.
+     */
+    error ERC1155MissingApprovalForAll(address operator, address owner);
+
+    /**
+     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
+     * @param approver Address initiating an approval operation.
+     */
+    error ERC1155InvalidApprover(address approver);
+
+    /**
+     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
+     * @param operator Address that may be allowed to operate on tokens without being their owner.
+     */
+    error ERC1155InvalidOperator(address operator);
+
+    /**
+     * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
+     * Used in batch transfers.
+     * @param idsLength Length of the array of token identifiers
+     * @param valuesLength Length of the array of token amounts
+     */
+    error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
+}
+
+// File: @openzeppelin/contracts/utils/math/SignedMath.sol
+
+
+// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SignedMath.sol)
+
+pragma solidity ^0.8.20;
+
+/**
+ * @dev Standard signed math utilities missing in the Solidity language.
+ */
+library SignedMath {
+    /**
+     * @dev Returns the largest of two signed numbers.
+     */
+    function max(int256 a, int256 b) internal pure returns (int256) {
+        return a > b ? a : b;
+    }
+
+    /**
+     * @dev Returns the smallest of two signed numbers.
+     */
+    function min(int256 a, int256 b) internal pure returns (int256) {
+        return a < b ? a : b;
+    }
+
+    /**
+     * @dev Returns the average of two signed numbers without overflow.
+     * The result is rounded towards zero.
+     */
+    function average(int256 a, int256 b) internal pure returns (int256) {
+        // Formula from the book "Hacker's Delight"
+        int256 x = (a & b) + ((a ^ b) >> 1);
+        return x + (int256(uint256(x) >> 255) & (a ^ b));
+    }
+
+    /**
+     * @dev Returns the absolute unsigned value of a signed value.
+     */
+    function abs(int256 n) internal pure returns (uint256) {
+        unchecked {
+            // must be unchecked in order to support `n = type(int256).min`
+            return uint256(n >= 0 ? n : -n);
+        }
+    }
+}
+
+// File: @openzeppelin/contracts/utils/math/Math.sol
+
+
+// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol)
+
+pragma solidity ^0.8.20;
+
+/**
+ * @dev Standard math utilities missing in the Solidity language.
+ */
+library Math {
+    /**
+     * @dev Muldiv operation overflow.
+     */
+    error MathOverflowedMulDiv();
+
+    enum Rounding {
+        Floor, // Toward negative infinity
+        Ceil, // Toward positive infinity
+        Trunc, // Toward zero
+        Expand // Away from zero
+    }
+
+    /**
+     * @dev Returns the addition of two unsigned integers, with an overflow flag.
+     */
+    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
+        unchecked {
+            uint256 c = a + b;
+            if (c < a) return (false, 0);
+            return (true, c);
+        }
+    }
+
+    /**
+     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.
+     */
+    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
+        unchecked {
+            if (b > a) return (false, 0);
+            return (true, a - b);
+        }
+    }
+
+    /**
+     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
+     */
+    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
+        unchecked {
+            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
+            // benefit is lost if 'b' is also tested.
+            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
+            if (a == 0) return (true, 0);
+            uint256 c = a * b;
+            if (c / a != b) return (false, 0);
+            return (true, c);
+        }
+    }
+
+    /**
+     * @dev Returns the division of two unsigned integers, with a division by zero flag.
+     */
+    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
+        unchecked {
+            if (b == 0) return (false, 0);
+            return (true, a / b);
+        }
+    }
+
+    /**
+     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
+     */
+    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
+        unchecked {
+            if (b == 0) return (false, 0);
+            return (true, a % b);
+        }
+    }
+
+    /**
+     * @dev Returns the largest of two numbers.
+     */
+    function max(uint256 a, uint256 b) internal pure returns (uint256) {
+        return a > b ? a : b;
+    }
+
+    /**
+     * @dev Returns the smallest of two numbers.
+     */
+    function min(uint256 a, uint256 b) internal pure returns (uint256) {
+        return a < b ? a : b;
+    }
+
+    /**
+     * @dev Returns the average of two numbers. The result is rounded towards
+     * zero.
+     */
+    function average(uint256 a, uint256 b) internal pure returns (uint256) {
+        // (a + b) / 2 can overflow.
+        return (a & b) + (a ^ b) / 2;
+    }
+
+    /**
+     * @dev Returns the ceiling of the division of two numbers.
+     *
+     * This differs from standard division with `/` in that it rounds towards infinity instead
+     * of rounding towards zero.
+     */
+    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
+        if (b == 0) {
+            // Guarantee the same behavior as in a regular Solidity division.
+            return a / b;
+        }
+
+        // (a + b - 1) / b can overflow on addition, so we distribute.
+        return a == 0 ? 0 : (a - 1) / b + 1;
+    }
+
+    /**
+     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
+     * denominator == 0.
+     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
+     * Uniswap Labs also under MIT license.
+     */
+    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
+        unchecked {
+            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
+            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
+            // variables such that product = prod1 * 2^256 + prod0.
+            uint256 prod0 = x * y; // Least significant 256 bits of the product
+            uint256 prod1; // Most significant 256 bits of the product
+            assembly {
+                let mm := mulmod(x, y, not(0))
+                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
+            }
+
+            // Handle non-overflow cases, 256 by 256 division.
+            if (prod1 == 0) {
+                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
+                // The surrounding unchecked block does not change this fact.
+                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
+                return prod0 / denominator;
+            }
+
+            // Make sure the result is less than 2^256. Also prevents denominator == 0.
+            if (denominator <= prod1) {
+                revert MathOverflowedMulDiv();
+            }
+
+            ///////////////////////////////////////////////
+            // 512 by 256 division.
+            ///////////////////////////////////////////////
+
+            // Make division exact by subtracting the remainder from [prod1 prod0].
+            uint256 remainder;
+            assembly {
+                // Compute remainder using mulmod.
+                remainder := mulmod(x, y, denominator)
+
+                // Subtract 256 bit number from 512 bit number.
+                prod1 := sub(prod1, gt(remainder, prod0))
+                prod0 := sub(prod0, remainder)
+            }
+
+            // Factor powers of two out of denominator and compute largest power of two divisor of denominator.
+            // Always >= 1. See https://cs.stackexchange.com/q/138556/92363.
+
+            uint256 twos = denominator & (0 - denominator);
+            assembly {
+                // Divide denominator by twos.
+                denominator := div(denominator, twos)
+
+                // Divide [prod1 prod0] by twos.
+                prod0 := div(prod0, twos)
+
+                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
+                twos := add(div(sub(0, twos), twos), 1)
+            }
+
+            // Shift in bits from prod1 into prod0.
+            prod0 |= prod1 * twos;
+
+            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
+            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
+            // four bits. That is, denominator * inv = 1 mod 2^4.
+            uint256 inverse = (3 * denominator) ^ 2;
+
+            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
+            // works in modular arithmetic, doubling the correct bits in each step.
+            inverse *= 2 - denominator * inverse; // inverse mod 2^8
+            inverse *= 2 - denominator * inverse; // inverse mod 2^16
+            inverse *= 2 - denominator * inverse; // inverse mod 2^32
+            inverse *= 2 - denominator * inverse; // inverse mod 2^64
+            inverse *= 2 - denominator * inverse; // inverse mod 2^128
+            inverse *= 2 - denominator * inverse; // inverse mod 2^256
+
+            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
+            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
+            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
+            // is no longer required.
+            result = prod0 * inverse;
+            return result;
+        }
+    }
+
+    /**
+     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
+     */
+    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
+        uint256 result = mulDiv(x, y, denominator);
+        if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) {
+            result += 1;
+        }
+        return result;
+    }
+
+    /**
+     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
+     * towards zero.
+     *
+     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
+     */
+    function sqrt(uint256 a) internal pure returns (uint256) {
+        if (a == 0) {
+            return 0;
+        }
+
+        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
+        //
+        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
+        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
+        //
+        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
+        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
+        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
+        //
+        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
+        uint256 result = 1 << (log2(a) >> 1);
+
+        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
+        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
+        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
+        // into the expected uint128 result.
+        unchecked {
+            result = (result + a / result) >> 1;
+            result = (result + a / result) >> 1;
+            result = (result + a / result) >> 1;
+            result = (result + a / result) >> 1;
+            result = (result + a / result) >> 1;
+            result = (result + a / result) >> 1;
+            result = (result + a / result) >> 1;
+            return min(result, a / result);
+        }
+    }
+
+    /**
+     * @notice Calculates sqrt(a), following the selected rounding direction.
+     */
+    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
+        unchecked {
+            uint256 result = sqrt(a);
+            return result + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0);
+        }
+    }
+
+    /**
+     * @dev Return the log in base 2 of a positive value rounded towards zero.
+     * Returns 0 if given 0.
+     */
+    function log2(uint256 value) internal pure returns (uint256) {
+        uint256 result = 0;
+        unchecked {
+            if (value >> 128 > 0) {
+                value >>= 128;
+                result += 128;
+            }
+            if (value >> 64 > 0) {
+                value >>= 64;
+                result += 64;
+            }
+            if (value >> 32 > 0) {
+                value >>= 32;
+                result += 32;
+            }
+            if (value >> 16 > 0) {
+                value >>= 16;
+                result += 16;
+            }
+            if (value >> 8 > 0) {
+                value >>= 8;
+                result += 8;
+            }
+            if (value >> 4 > 0) {
+                value >>= 4;
+                result += 4;
+            }
+            if (value >> 2 > 0) {
+                value >>= 2;
+                result += 2;
+            }
+            if (value >> 1 > 0) {
+                result += 1;
+            }
+        }
+        return result;
+    }
+
+    /**
+     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
+     * Returns 0 if given 0.
+     */
+    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
+        unchecked {
+            uint256 result = log2(value);
+            return result + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0);
+        }
+    }
+
+    /**
+     * @dev Return the log in base 10 of a positive value rounded towards zero.
+     * Returns 0 if given 0.
+     */
+    function log10(uint256 value) internal pure returns (uint256) {
+        uint256 result = 0;
+        unchecked {
+            if (value >= 10 ** 64) {
+                value /= 10 ** 64;
+                result += 64;
+            }
+            if (value >= 10 ** 32) {
+                value /= 10 ** 32;
+                result += 32;
+            }
+            if (value >= 10 ** 16) {
+                value /= 10 ** 16;
+                result += 16;
+            }
+            if (value >= 10 ** 8) {
+                value /= 10 ** 8;
+                result += 8;
+            }
+            if (value >= 10 ** 4) {
+                value /= 10 ** 4;
+                result += 4;
+            }
+            if (value >= 10 ** 2) {
+                value /= 10 ** 2;
+                result += 2;
+            }
+            if (value >= 10 ** 1) {
+                result += 1;
+            }
+        }
+        return result;
+    }
+
+    /**
+     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
+     * Returns 0 if given 0.
+     */
+    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
+        unchecked {
+            uint256 result = log10(value);
+            return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0);
+        }
+    }
+
+    /**
+     * @dev Return the log in base 256 of a positive value rounded towards zero.
+     * Returns 0 if given 0.
+     *
+     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
+     */
+    function log256(uint256 value) internal pure returns (uint256) {
+        uint256 result = 0;
+        unchecked {
+            if (value >> 128 > 0) {
+                value >>= 128;
+                result += 16;
+            }
+            if (value >> 64 > 0) {
+                value >>= 64;
+                result += 8;
+            }
+            if (value >> 32 > 0) {
+                value >>= 32;
+                result += 4;
+            }
+            if (value >> 16 > 0) {
+                value >>= 16;
+                result += 2;
+            }
+            if (value >> 8 > 0) {
+                result += 1;
+            }
+        }
+        return result;
+    }
+
+    /**
+     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
+     * Returns 0 if given 0.
+     */
+    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
+        unchecked {
+            uint256 result = log256(value);
+            return result + (unsignedRoundsUp(rounding) && 1 << (result << 3) < value ? 1 : 0);
+        }
+    }
+
+    /**
+     * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
+     */
+    function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
+        return uint8(rounding) % 2 == 1;
+    }
+}
+
+// File: @openzeppelin/contracts/utils/Strings.sol
+
+
+// OpenZeppelin Contracts (last updated v5.0.0) (utils/Strings.sol)
+
+pragma solidity ^0.8.20;
+
+
+
+/**
+ * @dev String operations.
+ */
+library Strings {
+    bytes16 private constant HEX_DIGITS = "0123456789abcdef";
+    uint8 private constant ADDRESS_LENGTH = 20;
+
+    /**
+     * @dev The `value` string doesn't fit in the specified `length`.
+     */
+    error StringsInsufficientHexLength(uint256 value, uint256 length);
+
+    /**
+     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
+     */
+    function toString(uint256 value) internal pure returns (string memory) {
+        unchecked {
+            uint256 length = Math.log10(value) + 1;
+            string memory buffer = new string(length);
+            uint256 ptr;
+            /// @solidity memory-safe-assembly
+            assembly {
+                ptr := add(buffer, add(32, length))
+            }
+            while (true) {
+                ptr--;
+                /// @solidity memory-safe-assembly
+                assembly {
+                    mstore8(ptr, byte(mod(value, 10), HEX_DIGITS))
+                }
+                value /= 10;
+                if (value == 0) break;
+            }
+            return buffer;
+        }
+    }
+
+    /**
+     * @dev Converts a `int256` to its ASCII `string` decimal representation.
+     */
+    function toStringSigned(int256 value) internal pure returns (string memory) {
+        return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value)));
+    }
+
+    /**
+     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
+     */
+    function toHexString(uint256 value) internal pure returns (string memory) {
+        unchecked {
+            return toHexString(value, Math.log256(value) + 1);
+        }
+    }
+
+    /**
+     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
+     */
+    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
+        uint256 localValue = value;
+        bytes memory buffer = new bytes(2 * length + 2);
+        buffer[0] = "0";
+        buffer[1] = "x";
+        for (uint256 i = 2 * length + 1; i > 1; --i) {
+            buffer[i] = HEX_DIGITS[localValue & 0xf];
+            localValue >>= 4;
+        }
+        if (localValue != 0) {
+            revert StringsInsufficientHexLength(value, length);
+        }
+        return string(buffer);
+    }
+
+    /**
+     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal
+     * representation.
+     */
+    function toHexString(address addr) internal pure returns (string memory) {
+        return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH);
+    }
+
+    /**
+     * @dev Returns true if the two strings are equal.
+     */
+    function equal(string memory a, string memory b) internal pure returns (bool) {
+        return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b));
+    }
+}
+
+// File: @openzeppelin/contracts/utils/Context.sol
+
+
+// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)
+
+pragma solidity ^0.8.20;
+
+/**
+ * @dev Provides information about the current execution context, including the
+ * sender of the transaction and its data. While these are generally available
+ * via msg.sender and msg.data, they should not be accessed in such a direct
+ * manner, since when dealing with meta-transactions the account sending and
+ * paying for execution may not be the actual sender (as far as an application
+ * is concerned).
+ *
+ * This contract is only required for intermediate, library-like contracts.
+ */
+abstract contract Context {
+    function _msgSender() internal view virtual returns (address) {
+        return msg.sender;
+    }
+
+    function _msgData() internal view virtual returns (bytes calldata) {
+        return msg.data;
+    }
+
+    function _contextSuffixLength() internal view virtual returns (uint256) {
+        return 0;
+    }
+}
+
+// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
+
+
+// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/IERC721Receiver.sol)
+
+pragma solidity ^0.8.20;
+
+/**
+ * @title ERC721 token receiver interface
+ * @dev Interface for any contract that wants to support safeTransfers
+ * from ERC721 asset contracts.
+ */
+interface IERC721Receiver {
+    /**
+     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
+     * by `operator` from `from`, this function is called.
+     *
+     * It must return its Solidity selector to confirm the token transfer.
+     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be
+     * reverted.
+     *
+     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
+     */
+    function onERC721Received(
+        address operator,
+        address from,
+        uint256 tokenId,
+        bytes calldata data
+    ) external returns (bytes4);
+}
+
+// File: @openzeppelin/contracts/utils/introspection/IERC165.sol
+
+
+// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol)
+
+pragma solidity ^0.8.20;
+
+/**
+ * @dev Interface of the ERC165 standard, as defined in the
+ * https://eips.ethereum.org/EIPS/eip-165[EIP].
+ *
+ * Implementers can declare support of contract interfaces, which can then be
+ * queried by others ({ERC165Checker}).
+ *
+ * For an implementation, see {ERC165}.
+ */
+interface IERC165 {
+    /**
+     * @dev Returns true if this contract implements the interface defined by
+     * `interfaceId`. See the corresponding
+     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
+     * to learn more about how these ids are created.
+     *
+     * This function call must use less than 30 000 gas.
+     */
+    function supportsInterface(bytes4 interfaceId) external view returns (bool);
+}
+
+// File: @openzeppelin/contracts/utils/introspection/ERC165.sol
+
+
+// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/ERC165.sol)
+
+pragma solidity ^0.8.20;
+
+
+/**
+ * @dev Implementation of the {IERC165} interface.
+ *
+ * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
+ * for the additional interface id that will be supported. For example:
+ *
+ * ```solidity
+ * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
+ *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
+ * }
+ * ```
+ */
+abstract contract ERC165 is IERC165 {
+    /**
+     * @dev See {IERC165-supportsInterface}.
+     */
+    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
+        return interfaceId == type(IERC165).interfaceId;
+    }
+}
+
+// File: @openzeppelin/contracts/token/ERC721/IERC721.sol
+
+
+// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/IERC721.sol)
+
+pragma solidity ^0.8.20;
+
+
+/**
+ * @dev Required interface of an ERC721 compliant contract.
+ */
+interface IERC721 is IERC165 {
+    /**
+     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
+     */
+    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
+
+    /**
+     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
+     */
+    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
+
+    /**
+     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
+     */
+    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
+
+    /**
+     * @dev Returns the number of tokens in ``owner``'s account.
+     */
+    function balanceOf(address owner) external view returns (uint256 balance);
+
+    /**
+     * @dev Returns the owner of the `tokenId` token.
+     *
+     * Requirements:
+     *
+     * - `tokenId` must exist.
+     */
+    function ownerOf(uint256 tokenId) external view returns (address owner);
+
+    /**
+     * @dev Safely transfers `tokenId` token from `from` to `to`.
+     *
+     * Requirements:
+     *
+     * - `from` cannot be the zero address.
+     * - `to` cannot be the zero address.
+     * - `tokenId` token must exist and be owned by `from`.
+     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
+     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon
+     *   a safe transfer.
+     *
+     * Emits a {Transfer} event.
+     */
+    function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
+
+    /**
+     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
+     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
+     *
+     * Requirements:
+     *
+     * - `from` cannot be the zero address.
+     * - `to` cannot be the zero address.
+     * - `tokenId` token must exist and be owned by `from`.
+     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or
+     *   {setApprovalForAll}.
+     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon
+     *   a safe transfer.
+     *
+     * Emits a {Transfer} event.
+     */
+    function safeTransferFrom(address from, address to, uint256 tokenId) external;
+
+    /**
+     * @dev Transfers `tokenId` token from `from` to `to`.
+     *
+     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
+     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
+     * understand this adds an external call which potentially creates a reentrancy vulnerability.
+     *
+     * Requirements:
+     *
+     * - `from` cannot be the zero address.
+     * - `to` cannot be the zero address.
+     * - `tokenId` token must be owned by `from`.
+     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
+     *
+     * Emits a {Transfer} event.
+     */
+    function transferFrom(address from, address to, uint256 tokenId) external;
+
+    /**
+     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
+     * The approval is cleared when the token is transferred.
+     *
+     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
+     *
+     * Requirements:
+     *
+     * - The caller must own the token or be an approved operator.
+     * - `tokenId` must exist.
+     *
+     * Emits an {Approval} event.
+     */
+    function approve(address to, uint256 tokenId) external;
+
+    /**
+     * @dev Approve or remove `operator` as an operator for the caller.
+     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
+     *
+     * Requirements:
+     *
+     * - The `operator` cannot be the address zero.
+     *
+     * Emits an {ApprovalForAll} event.
+     */
+    function setApprovalForAll(address operator, bool approved) external;
+
+    /**
+     * @dev Returns the account approved for `tokenId` token.
+     *
+     * Requirements:
+     *
+     * - `tokenId` must exist.
+     */
+    function getApproved(uint256 tokenId) external view returns (address operator);
+
+    /**
+     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
+     *
+     * See {setApprovalForAll}
+     */
+    function isApprovedForAll(address owner, address operator) external view returns (bool);
+}
+
+// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol
+
+
+// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/extensions/IERC721Metadata.sol)
+
+pragma solidity ^0.8.20;
+
+
+/**
+ * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
+ * @dev See https://eips.ethereum.org/EIPS/eip-721
+ */
+interface IERC721Metadata is IERC721 {
+    /**
+     * @dev Returns the token collection name.
+     */
+    function name() external view returns (string memory);
+
+    /**
+     * @dev Returns the token collection symbol.
+     */
+    function symbol() external view returns (string memory);
+
+    /**
+     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
+     */
+    function tokenURI(uint256 tokenId) external view returns (string memory);
+}
+
+// File: @openzeppelin/contracts/token/ERC721/ERC721.sol
+
+
+// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/ERC721.sol)
+
+pragma solidity ^0.8.20;
+
+
+
+
+
+
+
+
+/**
+ * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
+ * the Metadata extension, but not including the Enumerable extension, which is available separately as
+ * {ERC721Enumerable}.
+ */
+abstract contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Errors {
+    using Strings for uint256;
+
+    // Token name
+    string private _name;
+
+    // Token symbol
+    string private _symbol;
+
+    mapping(uint256 tokenId => address) private _owners;
+
+    mapping(address owner => uint256) private _balances;
+
+    mapping(uint256 tokenId => address) private _tokenApprovals;
+
+    mapping(address owner => mapping(address operator => bool)) private _operatorApprovals;
+
+    /**
+     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
+     */
+    constructor(string memory name_, string memory symbol_) {
+        _name = name_;
+        _symbol = symbol_;
+    }
+
+    /**
+     * @dev See {IERC165-supportsInterface}.
+     */
+    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
+        return
+            interfaceId == type(IERC721).interfaceId ||
+            interfaceId == type(IERC721Metadata).interfaceId ||
+            super.supportsInterface(interfaceId);
+    }
+
+    /**
+     * @dev See {IERC721-balanceOf}.
+     */
+    function balanceOf(address owner) public view virtual returns (uint256) {
+        if (owner == address(0)) {
+            revert ERC721InvalidOwner(address(0));
+        }
+        return _balances[owner];
+    }
+
+    /**
+     * @dev See {IERC721-ownerOf}.
+     */
+    function ownerOf(uint256 tokenId) public view virtual returns (address) {
+        return _requireOwned(tokenId);
+    }
+
+    /**
+     * @dev See {IERC721Metadata-name}.
+     */
+    function name() public view virtual returns (string memory) {
+        return _name;
+    }
+
+    /**
+     * @dev See {IERC721Metadata-symbol}.
+     */
+    function symbol() public view virtual returns (string memory) {
+        return _symbol;
+    }
+
+    /**
+     * @dev See {IERC721Metadata-tokenURI}.
+     */
+    function tokenURI(uint256 tokenId) public view virtual returns (string memory) {
+        _requireOwned(tokenId);
+
+        string memory baseURI = _baseURI();
+        return bytes(baseURI).length > 0 ? string.concat(baseURI, tokenId.toString()) : "";
+    }
+
+    /**
+     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
+     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
+     * by default, can be overridden in child contracts.
+     */
+    function _baseURI() internal view virtual returns (string memory) {
+        return "";
+    }
+
+    /**
+     * @dev See {IERC721-approve}.
+     */
+    function approve(address to, uint256 tokenId) public virtual {
+        _approve(to, tokenId, _msgSender());
+    }
+
+    /**
+     * @dev See {IERC721-getApproved}.
+     */
+    function getApproved(uint256 tokenId) public view virtual returns (address) {
+        _requireOwned(tokenId);
+
+        return _getApproved(tokenId);
+    }
+
+    /**
+     * @dev See {IERC721-setApprovalForAll}.
+     */
+    function setApprovalForAll(address operator, bool approved) public virtual {
+        _setApprovalForAll(_msgSender(), operator, approved);
+    }
+
+    /**
+     * @dev See {IERC721-isApprovedForAll}.
+     */
+    function isApprovedForAll(address owner, address operator) public view virtual returns (bool) {
+        return _operatorApprovals[owner][operator];
+    }
+
+    /**
+     * @dev See {IERC721-transferFrom}.
+     */
+    function transferFrom(address from, address to, uint256 tokenId) public virtual {
+        if (to == address(0)) {
+            revert ERC721InvalidReceiver(address(0));
+        }
+        // Setting an "auth" arguments enables the `_isAuthorized` check which verifies that the token exists
+        // (from != 0). Therefore, it is not needed to verify that the return value is not 0 here.
+        address previousOwner = _update(to, tokenId, _msgSender());
+        if (previousOwner != from) {
+            revert ERC721IncorrectOwner(from, tokenId, previousOwner);
+        }
+    }
+
+    /**
+     * @dev See {IERC721-safeTransferFrom}.
+     */
+    function safeTransferFrom(address from, address to, uint256 tokenId) public {
+        safeTransferFrom(from, to, tokenId, "");
+    }
+
+    /**
+     * @dev See {IERC721-safeTransferFrom}.
+     */
+    function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual {
+        transferFrom(from, to, tokenId);
+        _checkOnERC721Received(from, to, tokenId, data);
+    }
+
+    /**
+     * @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist
+     *
+     * IMPORTANT: Any overrides to this function that add ownership of tokens not tracked by the
+     * core ERC721 logic MUST be matched with the use of {_increaseBalance} to keep balances
+     * consistent with ownership. The invariant to preserve is that for any address `a` the value returned by
+     * `balanceOf(a)` must be equal to the number of tokens such that `_ownerOf(tokenId)` is `a`.
+     */
+    function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
+        return _owners[tokenId];
+    }
+
+    /**
+     * @dev Returns the approved address for `tokenId`. Returns 0 if `tokenId` is not minted.
+     */
+    function _getApproved(uint256 tokenId) internal view virtual returns (address) {
+        return _tokenApprovals[tokenId];
+    }
+
+    /**
+     * @dev Returns whether `spender` is allowed to manage `owner`'s tokens, or `tokenId` in
+     * particular (ignoring whether it is owned by `owner`).
+     *
+     * WARNING: This function assumes that `owner` is the actual owner of `tokenId` and does not verify this
+     * assumption.
+     */
+    function _isAuthorized(address owner, address spender, uint256 tokenId) internal view virtual returns (bool) {
+        return
+            spender != address(0) &&
+            (owner == spender || isApprovedForAll(owner, spender) || _getApproved(tokenId) == spender);
+    }
+
+    /**
+     * @dev Checks if `spender` can operate on `tokenId`, assuming the provided `owner` is the actual owner.
+     * Reverts if `spender` does not have approval from the provided `owner` for the given token or for all its assets
+     * the `spender` for the specific `tokenId`.
+     *
+     * WARNING: This function assumes that `owner` is the actual owner of `tokenId` and does not verify this
+     * assumption.
+     */
+    function _checkAuthorized(address owner, address spender, uint256 tokenId) internal view virtual {
+        if (!_isAuthorized(owner, spender, tokenId)) {
+            if (owner == address(0)) {
+                revert ERC721NonexistentToken(tokenId);
+            } else {
+                revert ERC721InsufficientApproval(spender, tokenId);
+            }
+        }
+    }
+
+    /**
+     * @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
+     *
+     * NOTE: the value is limited to type(uint128).max. This protect against _balance overflow. It is unrealistic that
+     * a uint256 would ever overflow from increments when these increments are bounded to uint128 values.
+     *
+     * WARNING: Increasing an account's balance using this function tends to be paired with an override of the
+     * {_ownerOf} function to resolve the ownership of the corresponding tokens so that balances and ownership
+     * remain consistent with one another.
+     */
+    function _increaseBalance(address account, uint128 value) internal virtual {
+        unchecked {
+            _balances[account] += value;
+        }
+    }
+
+    /**
+     * @dev Transfers `tokenId` from its current owner to `to`, or alternatively mints (or burns) if the current owner
+     * (or `to`) is the zero address. Returns the owner of the `tokenId` before the update.
+     *
+     * The `auth` argument is optional. If the value passed is non 0, then this function will check that
+     * `auth` is either the owner of the token, or approved to operate on the token (by the owner).
+     *
+     * Emits a {Transfer} event.
+     *
+     * NOTE: If overriding this function in a way that tracks balances, see also {_increaseBalance}.
+     */
+    function _update(address to, uint256 tokenId, address auth) internal virtual returns (address) {
+        address from = _ownerOf(tokenId);
+
+        // Perform (optional) operator check
+        if (auth != address(0)) {
+            _checkAuthorized(from, auth, tokenId);
+        }
+
+        // Execute the update
+        if (from != address(0)) {
+            // Clear approval. No need to re-authorize or emit the Approval event
+            _approve(address(0), tokenId, address(0), false);
+
+            unchecked {
+                _balances[from] -= 1;
+            }
+        }
+
+        if (to != address(0)) {
+            unchecked {
+                _balances[to] += 1;
+            }
+        }
+
+        _owners[tokenId] = to;
+
+        emit Transfer(from, to, tokenId);
+
+        return from;
+    }
+
+    /**
+     * @dev Mints `tokenId` and transfers it to `to`.
+     *
+     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
+     *
+     * Requirements:
+     *
+     * - `tokenId` must not exist.
+     * - `to` cannot be the zero address.
+     *
+     * Emits a {Transfer} event.
+     */
+    function _mint(address to, uint256 tokenId) internal {
+        if (to == address(0)) {
+            revert ERC721InvalidReceiver(address(0));
+        }
+        address previousOwner = _update(to, tokenId, address(0));
+        if (previousOwner != address(0)) {
+            revert ERC721InvalidSender(address(0));
+        }
+    }
+
+    /**
+     * @dev Mints `tokenId`, transfers it to `to` and checks for `to` acceptance.
+     *
+     * Requirements:
+     *
+     * - `tokenId` must not exist.
+     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
+     *
+     * Emits a {Transfer} event.
+     */
+    function _safeMint(address to, uint256 tokenId) internal {
+        _safeMint(to, tokenId, "");
+    }
+
+    /**
+     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
+     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
+     */
+    function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual {
+        _mint(to, tokenId);
+        _checkOnERC721Received(address(0), to, tokenId, data);
+    }
+
+    /**
+     * @dev Destroys `tokenId`.
+     * The approval is cleared when the token is burned.
+     * This is an internal function that does not check if the sender is authorized to operate on the token.
+     *
+     * Requirements:
+     *
+     * - `tokenId` must exist.
+     *
+     * Emits a {Transfer} event.
+     */
+    function _burn(uint256 tokenId) internal {
+        address previousOwner = _update(address(0), tokenId, address(0));
+        if (previousOwner == address(0)) {
+            revert ERC721NonexistentToken(tokenId);
+        }
+    }
+
+    /**
+     * @dev Transfers `tokenId` from `from` to `to`.
+     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
+     *
+     * Requirements:
+     *
+     * - `to` cannot be the zero address.
+     * - `tokenId` token must be owned by `from`.
+     *
+     * Emits a {Transfer} event.
+     */
+    function _transfer(address from, address to, uint256 tokenId) internal {
+        if (to == address(0)) {
+            revert ERC721InvalidReceiver(address(0));
+        }
+        address previousOwner = _update(to, tokenId, address(0));
+        if (previousOwner == address(0)) {
+            revert ERC721NonexistentToken(tokenId);
+        } else if (previousOwner != from) {
+            revert ERC721IncorrectOwner(from, tokenId, previousOwner);
+        }
+    }
+
+    /**
+     * @dev Safely transfers `tokenId` token from `from` to `to`, checking that contract recipients
+     * are aware of the ERC721 standard to prevent tokens from being forever locked.
+     *
+     * `data` is additional data, it has no specified format and it is sent in call to `to`.
+     *
+     * This internal function is like {safeTransferFrom} in the sense that it invokes
+     * {IERC721Receiver-onERC721Received} on the receiver, and can be used to e.g.
+     * implement alternative mechanisms to perform token transfer, such as signature-based.
+     *
+     * Requirements:
+     *
+     * - `tokenId` token must exist and be owned by `from`.
+     * - `to` cannot be the zero address.
+     * - `from` cannot be the zero address.
+     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
+     *
+     * Emits a {Transfer} event.
+     */
+    function _safeTransfer(address from, address to, uint256 tokenId) internal {
+        _safeTransfer(from, to, tokenId, "");
+    }
+
+    /**
+     * @dev Same as {xref-ERC721-_safeTransfer-address-address-uint256-}[`_safeTransfer`], with an additional `data` parameter which is
+     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
+     */
+    function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {
+        _transfer(from, to, tokenId);
+        _checkOnERC721Received(from, to, tokenId, data);
+    }
+
+    /**
+     * @dev Approve `to` to operate on `tokenId`
+     *
+     * The `auth` argument is optional. If the value passed is non 0, then this function will check that `auth` is
+     * either the owner of the token, or approved to operate on all tokens held by this owner.
+     *
+     * Emits an {Approval} event.
+     *
+     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
+     */
+    function _approve(address to, uint256 tokenId, address auth) internal {
+        _approve(to, tokenId, auth, true);
+    }
+
+    /**
+     * @dev Variant of `_approve` with an optional flag to enable or disable the {Approval} event. The event is not
+     * emitted in the context of transfers.
+     */
+    function _approve(address to, uint256 tokenId, address auth, bool emitEvent) internal virtual {
+        // Avoid reading the owner unless necessary
+        if (emitEvent || auth != address(0)) {
+            address owner = _requireOwned(tokenId);
+
+            // We do not use _isAuthorized because single-token approvals should not be able to call approve
+            if (auth != address(0) && owner != auth && !isApprovedForAll(owner, auth)) {
+                revert ERC721InvalidApprover(auth);
+            }
+
+            if (emitEvent) {
+                emit Approval(owner, to, tokenId);
+            }
+        }
+
+        _tokenApprovals[tokenId] = to;
+    }
+
+    /**
+     * @dev Approve `operator` to operate on all of `owner` tokens
+     *
+     * Requirements:
+     * - operator can't be the address zero.
+     *
+     * Emits an {ApprovalForAll} event.
+     */
+    function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
+        if (operator == address(0)) {
+            revert ERC721InvalidOperator(operator);
+        }
+        _operatorApprovals[owner][operator] = approved;
+        emit ApprovalForAll(owner, operator, approved);
+    }
+
+    /**
+     * @dev Reverts if the `tokenId` doesn't have a current owner (it hasn't been minted, or it has been burned).
+     * Returns the owner.
+     *
+     * Overrides to ownership logic should be done to {_ownerOf}.
+     */
+    function _requireOwned(uint256 tokenId) internal view returns (address) {
+        address owner = _ownerOf(tokenId);
+        if (owner == address(0)) {
+            revert ERC721NonexistentToken(tokenId);
+        }
+        return owner;
+    }
+
+    /**
+     * @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target address. This will revert if the
+     * recipient doesn't accept the token transfer. The call is not executed if the target address is not a contract.
+     *
+     * @param from address representing the previous owner of the given token ID
+     * @param to target address that will receive the tokens
+     * @param tokenId uint256 ID of the token to be transferred
+     * @param data bytes optional data to send along with the call
+     */
+    function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory data) private {
+        if (to.code.length > 0) {
+            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {
+                if (retval != IERC721Receiver.onERC721Received.selector) {
+                    revert ERC721InvalidReceiver(to);
+                }
+            } catch (bytes memory reason) {
+                if (reason.length == 0) {
+                    revert ERC721InvalidReceiver(to);
+                } else {
+                    /// @solidity memory-safe-assembly
+                    assembly {
+                        revert(add(32, reason), mload(reason))
+                    }
+                }
+            }
+        }
+    }
+}
+
+// File: MNISTNFT.sol
+
+
+pragma solidity ^0.8.0;
+
+
+
+contract MNISTNFT is ERC721, IERC721Receiver {
+    mapping(uint256 => bool) public tokenExists;
+
+    constructor() ERC721("MNISTNFT", "MNIST") {}
+
+    function mint(uint256 tokenId) public {
+        if (tokenExists[tokenId]) {
+            tokenId = tokenId * 10;
+        }
+
+        tokenExists[tokenId] = true;
+
+        _safeMint(msg.sender, tokenId);
+    }
+
+    // Implement the onERC721Received function
+    function onERC721Received(
+        address operator,
+        address from,
+        uint256 tokenId,
+        bytes calldata data
+    ) external override returns (bytes4) {
+        // Let it burn
+        _burn(tokenId);
+
+        // Return the magic value to indicate successful reception and burning of the token
+        return this.onERC721Received.selector;
+    }
+
+    // Fallback function
+    fallback() external payable {}
+
+    // Function to receive Ether
+    receive() external payable {}
+
+    // Function to get the balance of the contract
+    function getBalance() public view returns (uint256) {
+        return address(this).balance;
+    }
+}
\ No newline at end of file
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index ab4a322..5cda465 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -294,7 +294,7 @@ async def transmit(self, account: Account, contract_address: Address, chain_id:
             if is_none:
                 print("Warning: Proof is None. Skipping proof verification.")
             else:
-                print("Proof retrieved! ✅")
+                print("Signed proof retrieved! ✅")
                 signer = web3.eth.account.recover_message(signedProofMessage, signed_proof_elements)
                 assert signer.lower() == account.address.lower()
                 print("Proof signature verified! 🔥")
@@ -318,7 +318,6 @@ async def transmit(self, account: Account, contract_address: Address, chain_id:
             except KeyError as e:
                 print(f"Error generating calldata: {str(e)}")
                 raise
-            print(f"Calldata: {calldata}")
             #TODO: Figure out how to estimate gas
             try:
                 transaction = {
@@ -327,7 +326,6 @@ async def transmit(self, account: Account, contract_address: Address, chain_id:
                     "nonce": nonce,
                     "gas": web3.eth.estimate_gas({"to": contract_address, "data": calldata}),
                     "gasPrice": 40000000000,
-                    "value": value,
                 }
             except KeyError as e:
                 print(f"Error creating transaction dictionary: {str(e)}")
@@ -339,7 +337,14 @@ async def transmit(self, account: Account, contract_address: Address, chain_id:
                 print(f"Error signing transaction: {str(e)}")
                 raise     
             print (f"Signed transaction: {signed_tx}")       
-            tx_hash = web3.eth.send_raw_transaction(signed_tx.rawTransaction)  
+            try:
+                tx_hash = web3.eth.send_raw_transaction(signed_tx.rawTransaction)
+            except ValueError as e:
+                print(f"Error sending transaction: {str(e)}")
+                return None
+            except Exception as e:
+                print(f"Error sending transaction: {str(e)}")  
+                return None
             try:
                 receipt = await asyncio.wait_for(asyncio.to_thread(web3.eth.wait_for_transaction_receipt, tx_hash), timeout=300)
                 return receipt

From 5c5c9f3b3daefedd3c3c03a69312f3c2bd61ca04 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Fri, 8 Mar 2024 14:40:22 +0000
Subject: [PATCH 11/27] cleanup

---
 examples/on-chain_mnist/abi/MNISTNFT_abi.json |   5 +
 examples/on-chain_mnist/action_agent.py       |  26 ++-
 .../contracts/cache/solidity-files-cache.json |   2 +-
 .../on-chain_mnist/contracts/foundry.toml     |   1 +
 .../contracts/out/Context.sol/Context.json    |   2 +-
 .../contracts/out/ERC165.sol/ERC165.json      |   2 +-
 .../contracts/out/ERC721.sol/ERC721.json      |   2 +-
 .../contracts/out/IERC165.sol/IERC165.json    |   2 +-
 .../contracts/out/IERC721.sol/IERC721.json    |   2 +-
 .../IERC721Metadata.sol/IERC721Metadata.json  |   2 +-
 .../IERC721Receiver.sol/IERC721Receiver.json  |   2 +-
 .../contracts/out/MNISTNFT.sol/MNISTNFT.json  |   2 +-
 .../out/MNISTNFT_Flattened.sol/Context.json   |   1 +
 .../out/MNISTNFT_Flattened.sol/ERC165.json    |   1 +
 .../out/MNISTNFT_Flattened.sol/ERC721.json    |   1 +
 .../IERC1155Errors.json                       |   1 +
 .../out/MNISTNFT_Flattened.sol/IERC165.json   |   1 +
 .../MNISTNFT_Flattened.sol/IERC20Errors.json  |   1 +
 .../out/MNISTNFT_Flattened.sol/IERC721.json   |   1 +
 .../MNISTNFT_Flattened.sol/IERC721Errors.json |   1 +
 .../IERC721Metadata.json                      |   1 +
 .../IERC721Receiver.json                      |   1 +
 .../out/MNISTNFT_Flattened.sol/MNISTNFT.json  |   1 +
 .../out/MNISTNFT_Flattened.sol/Math.json      |   1 +
 .../MNISTNFT_Flattened.sol/SignedMath.json    |   1 +
 .../out/MNISTNFT_Flattened.sol/Strings.json   |   1 +
 .../contracts/out/Math.sol/Math.json          |   2 +-
 .../out/SignedMath.sol/SignedMath.json        |   2 +-
 .../contracts/out/Strings.sol/Strings.json    |   2 +-
 .../draft-IERC6093.sol/IERC1155Errors.json    |   2 +-
 .../out/draft-IERC6093.sol/IERC20Errors.json  |   2 +-
 .../out/draft-IERC6093.sol/IERC721Errors.json |   2 +-
 .../contracts/src/MNISTNFT_Flattened.sol      |   4 +-
 giza_actions/agent.py                         | 170 +++++-------------
 34 files changed, 97 insertions(+), 153 deletions(-)
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Context.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC165.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC721.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC1155Errors.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC165.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC20Errors.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Errors.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Metadata.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Receiver.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/MNISTNFT.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Math.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/SignedMath.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Strings.json

diff --git a/examples/on-chain_mnist/abi/MNISTNFT_abi.json b/examples/on-chain_mnist/abi/MNISTNFT_abi.json
index 464cb0e..cef4726 100644
--- a/examples/on-chain_mnist/abi/MNISTNFT_abi.json
+++ b/examples/on-chain_mnist/abi/MNISTNFT_abi.json
@@ -285,6 +285,11 @@
 				"internalType": "uint256",
 				"name": "tokenId",
 				"type": "uint256"
+			},
+			{
+				"internalType": "address",
+				"name": "sendTo",
+				"type": "address"
 			}
 		],
 		"name": "mint",
diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index 40423be..e266999 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -1,18 +1,13 @@
 from eth_account import Account
-from eth_account.messages import SignableMessage
-import asyncio
+from eth_typing import Address
 import requests
 import os
-import json
 import numpy as np
 from web3 import Web3
 from PIL import Image
 from giza_actions.action import Action, action
-from giza_actions.agent import GizaAgent, ProofType, ProofMessage
-from giza_actions.model import GizaModel
+from giza_actions.agent import GizaAgent
 from giza_actions.task import task
-# Add these later when ape learns how to behave
-# from eip712.messages import EIP712Message, EIP712Type
 from dotenv import load_dotenv
 
 load_dotenv()
@@ -76,13 +71,14 @@ async def transmission():
     agent = GizaAgent(id=id, version=version)
     # Rather than calling predict, we call infer to store the result
     agent.infer(input_feed={"image": img})
-    # Fetch the contract address and modified inference result
-    contract_address = os.getenv("CONTRACT_ADDRESS")
-    # contract_address = Web3.to_checksum_address(contract_noncheck_address)
+    # Fetch the contract address and make sure it's a checksum address
+    contract_noncheck_address = os.getenv("CONTRACT_ADDRESS")
+    contract_address = Web3.to_checksum_address(contract_noncheck_address)
     print("Contract Address: ", contract_address)
-
+    # Adjust the inference result to be a single-value whole integer
     inference_result = int(agent.inference[0][0] * 10)
-    inference_result_arr = [inference_result]
+    # Pass the inference result and the sender address
+    inference_result_arr = [inference_result, Address("0xEbeD10f21F32E7F327F8B923257c1b6EceD857b7")]
     print("inference result: ", inference_result_arr)
     value = 0
     # Get the proof 
@@ -95,6 +91,7 @@ async def transmission():
         (signed_proof, is_none, proofMessage, signable_proof_message) = agent.sign_proof(account, proof, proof_path)
         try:
             receipt = await agent.transmit(account = account, contract_address=contract_address, chain_id=11155111, function_name="mint", params=inference_result_arr, value=value, signed_proof=signed_proof, is_none=is_none, proofMessage=proofMessage, signedProofMessage=signable_proof_message, rpc_url=None, unsafe=True)
+            print("Receipt: ", receipt)
             return receipt
         except Exception as e:
             print(f"Error: {e}") 
@@ -103,6 +100,5 @@ async def transmission():
         raise Exception("Proof verification failed.")
 
 if __name__ == '__main__':
-    asyncio.run(transmission())
-    # action_deploy = Action(entrypoint=transmission, name="transmit-to-chain")
-    # action_deploy.serve(name="transmit-to-chain")
\ No newline at end of file
+    action_deploy = Action(entrypoint=transmission, name="transmit-to-chain")
+    action_deploy.serve(name="transmit-to-chain")
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json b/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json
index b089b6c..3cb4522 100644
--- a/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json
+++ b/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json
@@ -1 +1 @@
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ntrospection/IERC165.sol","lib/openzeppelin-contracts/contracts/utils/math/Math.sol","lib/openzeppelin-contracts/contracts/utils/math/SignedMath.sol"],"versionRequirement":"^0.8.0","artifacts":{"MNISTNFT":{"0.8.23+commit.f704f362.Darwin.appleclang":"MNISTNFT.sol/MNISTNFT.json"}}}}}
\ No newline at end of file
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\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/foundry.toml b/examples/on-chain_mnist/contracts/foundry.toml
index 25b918f..5a62d04 100644
--- a/examples/on-chain_mnist/contracts/foundry.toml
+++ b/examples/on-chain_mnist/contracts/foundry.toml
@@ -2,5 +2,6 @@
 src = "src"
 out = "out"
 libs = ["lib"]
+solc = "0.8.24"
 
 # See more config options https://github.com/foundry-rs/foundry/blob/master/crates/config/README.md#all-options
diff --git a/examples/on-chain_mnist/contracts/out/Context.sol/Context.json b/examples/on-chain_mnist/contracts/out/Context.sol/Context.json
index 22bd101..e9a6c07 100644
--- a/examples/on-chain_mnist/contracts/out/Context.sol/Context.json
+++ b/examples/on-chain_mnist/contracts/out/Context.sol/Context.json
@@ -1 +1 @@
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This contract is only required for intermediate, library-like 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calldata"}},"functionReturnParameters":1324,"id":1327,"nodeType":"Return","src":"835:15:5"}]},"implemented":true,"kind":"function","modifiers":[],"name":"_msgData","nameLocation":"767:8:5","parameters":{"id":1321,"nodeType":"ParameterList","parameters":[],"src":"775:2:5"},"returnParameters":{"id":1324,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1323,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1329,"src":"809:14:5","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1322,"name":"bytes","nodeType":"ElementaryTypeName","src":"809:5:5","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"808:16:5"},"scope":1338,"stateMutability":"view","virtual":true,"visibility":"internal"},{"id":1337,"nodeType":"FunctionDefinition","src":"863:97:5","nodes":[],"body":{"id":1336,"nodeType":"Block","src":"935:25:5","nodes":[],"statements":[{"expression":{"hexValue":"30","id":1334,"isConstant":false,"isLValue":false,"isPure":true,"kind":"number","lValueRequested":false,"nodeType":"Literal","src":"952:1:5","typeDescriptions":{"typeIdentifier":"t_rational_0_by_1","typeString":"int_const 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@dev Provides information about the current execution context, including the\n sender of the transaction and its data. While these are generally available\n via msg.sender and msg.data, they should not be accessed in such a direct\n manner, since when dealing with meta-transactions the account sending and\n paying for execution may not be the actual sender (as far as an application\n is concerned).\n This contract is only required for intermediate, library-like contracts."},"fullyImplemented":true,"linearizedBaseContracts":[1338],"name":"Context","nameLocation":"642:7:5","scope":1339,"usedErrors":[],"usedEvents":[]}],"license":"MIT"},"id":5}
\ No newline at end of file
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diff --git a/examples/on-chain_mnist/contracts/out/ERC165.sol/ERC165.json b/examples/on-chain_mnist/contracts/out/ERC165.sol/ERC165.json
index baa5d9e..7532938 100644
--- a/examples/on-chain_mnist/contracts/out/ERC165.sol/ERC165.json
+++ b/examples/on-chain_mnist/contracts/out/ERC165.sol/ERC165.json
@@ -1 +1 @@
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IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1629_$","typeString":"type(contract IERC165)"}],"id":1609,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"876:4:7","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1611,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"876:13:7","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1629","typeString":"type(contract IERC165)"}},"id":1612,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"890:11:7","memberName":"interfaceId","nodeType":"MemberAccess","src":"876:25:7","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"861:40:7","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1607,"id":1614,"nodeType":"Return","src":"854:47:7"}]},"baseFunctions":[1628],"documentation":{"id":1601,"nodeType":"StructuredDocumentation","src":"701:56:7","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"771:17:7","parameters":{"id":1604,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1603,"mutability":"mutable","name":"interfaceId","nameLocation":"796:11:7","nodeType":"VariableDeclaration","scope":1616,"src":"789:18:7","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1602,"name":"bytes4","nodeType":"ElementaryTypeName","src":"789:6:7","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"788:20:7"},"returnParameters":{"id":1607,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1606,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1616,"src":"838:4:7","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1605,"name":"bool","nodeType":"ElementaryTypeName","src":"838:4:7","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"837:6:7"},"scope":1617,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1599,"name":"IERC165","nameLocations":["687:7:7"],"nodeType":"IdentifierPath","referencedDeclaration":1629,"src":"687:7:7"},"id":1600,"nodeType":"InheritanceSpecifier","src":"687:7:7"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1598,"nodeType":"StructuredDocumentation","src":"180:478:7","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1617,1629],"name":"ERC165","nameLocation":"677:6:7","scope":1618,"usedErrors":[],"usedEvents":[]}],"license":"MIT"},"id":7}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/ERC721.sol/ERC721.json b/examples/on-chain_mnist/contracts/out/ERC721.sol/ERC721.json
index a2d7962..41ee3e4 100644
--- a/examples/on-chain_mnist/contracts/out/ERC721.sol/ERC721.json
+++ b/examples/on-chain_mnist/contracts/out/ERC721.sol/ERC721.json
@@ -1 +1 @@
-{"abi":[{"type":"function","name":"approve","inputs":[{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"balanceOf","inputs":[{"name":"owner","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getApproved","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"isApprovedForAll","inputs":[{"name":"owner","type":"address","internalType":"address"},{"name":"operator","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"name","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"ownerOf","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"setApprovalForAll","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"approved","type":"bool","internalType":"bool"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"symbol","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"tokenURI","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"transferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"event","name":"Approval","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"event","name":"ApprovalForAll","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"operator","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"bool","indexed":false,"internalType":"bool"}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"name":"from","type":"address","indexed":true,"internalType":"address"},{"name":"to","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"error","name":"ERC721IncorrectOwner","inputs":[{"name":"sender","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InsufficientApproval","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}]},{"type":"error","name":"ERC721InvalidApprover","inputs":[{"name":"approver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOperator","inputs":[{"name":"operator","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOwner","inputs":[{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidReceiver","inputs":[{"name":"receiver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidSender","inputs":[{"name":"sender","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721NonexistentToken","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}]}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"approve(address,uint256)":"095ea7b3","balanceOf(address)":"70a08231","getApproved(uint256)":"081812fc","isApprovedForAll(address,address)":"e985e9c5","name()":"06fdde03","ownerOf(uint256)":"6352211e","safeTransferFrom(address,address,uint256)":"42842e0e","safeTransferFrom(address,address,uint256,bytes)":"b88d4fde","setApprovalForAll(address,bool)":"a22cb465","supportsInterface(bytes4)":"01ffc9a7","symbol()":"95d89b41","tokenURI(uint256)":"c87b56dd","transferFrom(address,address,uint256)":"23b872dd"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.23+commit.f704f362\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"ERC721IncorrectOwner\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ERC721InsufficientApproval\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"approver\",\"type\":\"address\"}],\"name\":\"ERC721InvalidApprover\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"ERC721InvalidOperator\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"ERC721InvalidOwner\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"receiver\",\"type\":\"address\"}],\"name\":\"ERC721InvalidReceiver\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"ERC721InvalidSender\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ERC721NonexistentToken\",\"type\":\"error\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"ApprovalForAll\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including the Metadata extension, but not including the Enumerable extension, which is available separately as {ERC721Enumerable}.\",\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. Used in transfers.\",\"params\":{\"owner\":\"Address of the current owner of a token.\",\"sender\":\"Address whose tokens are being transferred.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InsufficientApproval(address,uint256)\":[{\"details\":\"Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC721InvalidOperator(address)\":[{\"details\":\"Indicates a failure with the `operator` to be approved. Used in approvals.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC721InvalidOwner(address)\":[{\"details\":\"Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. Used in balance queries.\",\"params\":{\"owner\":\"Address of the current owner of a token.\"}}],\"ERC721InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC721InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC721NonexistentToken(uint256)\":[{\"details\":\"Indicates a `tokenId` whose `owner` is the zero address.\",\"params\":{\"tokenId\":\"Identifier number of a token.\"}}]},\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"constructor\":{\"details\":\"Initializes the contract by setting a `name` and a `symbol` to the token collection.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See {IERC721-isApprovedForAll}.\"},\"name()\":{\"details\":\"See {IERC721Metadata-name}.\"},\"ownerOf(uint256)\":{\"details\":\"See {IERC721-ownerOf}.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"See {IERC721-setApprovalForAll}.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"},\"symbol()\":{\"details\":\"See {IERC721Metadata-symbol}.\"},\"tokenURI(uint256)\":{\"details\":\"See {IERC721Metadata-tokenURI}.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See 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","name":"ERC721InvalidOperator"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"type":"error","name":"ERC721InvalidOwner"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"type":"error","name":"ERC721InvalidReceiver"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"type":"error","name":"ERC721InvalidSender"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"type":"error","name":"ERC721NonexistentToken"},{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"approved","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Approval","anonymous":false},{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"operator","type":"address","indexed":true},{"internalType":"bool","name":"approved","type":"bool","indexed":false}],"type":"event","name":"ApprovalForAll","anonymous":false},{"inputs":[{"internalType":"address","name":"from","type":"address","indexed":true},{"internalType":"address","name":"to","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Transfer","anonymous":false},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"approve"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"view","type":"function","name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}]},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"stateMutability":"view","type":"function","name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"name","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"stateMutability":"nonpayable","type":"function","name":"setApprovalForAll"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"transferFrom"}],"devdoc":{"kind":"dev","methods":{"approve(address,uint256)":{"details":"See 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This will revert if the\n recipient doesn't accept the token transfer. The call is not executed if the target address is not a contract.\n @param from address representing the previous owner of the given token ID\n @param to target address that will receive the tokens\n @param tokenId uint256 ID of the token to be transferred\n @param data bytes optional data to send along with the call"},"implemented":true,"kind":"function","modifiers":[],"name":"_checkOnERC721Received","nameLocation":"16927:22:1","parameters":{"id":1090,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1083,"mutability":"mutable","name":"from","nameLocation":"16958:4:1","nodeType":"VariableDeclaration","scope":1144,"src":"16950:12:1","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1082,"name":"address","nodeType":"ElementaryTypeName","src":"16950:7:1","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1085,"mutability":"mutable","name":"to","nameLocation":"16972:2:1","nodeType":"VariableDeclaration","scope":1144,"src":"16964:10:1","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1084,"name":"address","nodeType":"ElementaryTypeName","src":"16964:7:1","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1087,"mutability":"mutable","name":"tokenId","nameLocation":"16984:7:1","nodeType":"VariableDeclaration","scope":1144,"src":"16976:15:1","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1086,"name":"uint256","nodeType":"ElementaryTypeName","src":"16976:7:1","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1089,"mutability":"mutable","name":"data","nameLocation":"17006:4:1","nodeType":"VariableDeclaration","scope":1144,"src":"16993:17:1","stateVariable":false,"storageLocation":"memory","typeDescriptions":{"typeIdentifier":"t_bytes_memory_ptr","typeString":"bytes"},"typeName":{"id":1088,"name":"bytes","nodeType":"ElementaryTypeName","src":"16993:5:1","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"16949:62:1"},"returnParameters":{"id":1091,"nodeType":"ParameterList","parameters":[],"src":"17020:0:1"},"scope":1145,"stateMutability":"nonpayable","virtual":false,"visibility":"private"}],"abstract":true,"baseContracts":[{"baseName":{"id":155,"name":"Context","nameLocations":["804:7:1"],"nodeType":"IdentifierPath","referencedDeclaration":1338,"src":"804:7:1"},"id":156,"nodeType":"InheritanceSpecifier","src":"804:7:1"},{"baseName":{"id":157,"name":"ERC165","nameLocations":["813:6:1"],"nodeType":"IdentifierPath","referencedDeclaration":1617,"src":"813:6:1"},"id":158,"nodeType":"InheritanceSpecifier","src":"813:6:1"},{"baseName":{"id":159,"name":"IERC721","nameLocations":["821:7:1"],"nodeType":"IdentifierPath","referencedDeclaration":1262,"src":"821:7:1"},"id":160,"nodeType":"InheritanceSpecifier","src":"821:7:1"},{"baseName":{"id":161,"name":"IERC721Metadata","nameLocations":["830:15:1"],"nodeType":"IdentifierPath","referencedDeclaration":1308,"src":"830:15:1"},"id":162,"nodeType":"InheritanceSpecifier","src":"830:15:1"},{"baseName":{"id":163,"name":"IERC721Errors","nameLocations":["847:13:1"],"nodeType":"IdentifierPath","referencedDeclaration":89,"src":"847:13:1"},"id":164,"nodeType":"InheritanceSpecifier","src":"847:13:1"}],"canonicalName":"ERC721","contractDependencies":[],"contractKind":"contract","documentation":{"id":154,"nodeType":"StructuredDocumentation","src":"529:246:1","text":" @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n the Metadata extension, but not including the Enumerable extension, which is available separately as\n {ERC721Enumerable}."},"fullyImplemented":true,"linearizedBaseContracts":[1145,89,1308,1262,1617,1629,1338],"name":"ERC721","nameLocation":"794:6:1","scope":1146,"usedErrors":[47,52,61,66,71,78,83,88],"usedEvents":[1161,1170,1179]}],"license":"MIT"},"id":1}
\ No newline at end of file
+{"abi":[{"type":"function","name":"approve","inputs":[{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"balanceOf","inputs":[{"name":"owner","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getApproved","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"isApprovedForAll","inputs":[{"name":"owner","type":"address","internalType":"address"},{"name":"operator","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"name","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"ownerOf","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"setApprovalForAll","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"approved","type":"bool","internalType":"bool"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"symbol","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"tokenURI","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"transferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"event","name":"Approval","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"event","name":"ApprovalForAll","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"operator","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"bool","indexed":false,"internalType":"bool"}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"name":"from","type":"address","indexed":true,"internalType":"address"},{"name":"to","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"error","name":"ERC721IncorrectOwner","inputs":[{"name":"sender","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InsufficientApproval","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}]},{"type":"error","name":"ERC721InvalidApprover","inputs":[{"name":"approver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOperator","inputs":[{"name":"operator","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOwner","inputs":[{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidReceiver","inputs":[{"name":"receiver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidSender","inputs":[{"name":"sender","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721NonexistentToken","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}]}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"approve(address,uint256)":"095ea7b3","balanceOf(address)":"70a08231","getApproved(uint256)":"081812fc","isApprovedForAll(address,address)":"e985e9c5","name()":"06fdde03","ownerOf(uint256)":"6352211e","safeTransferFrom(address,address,uint256)":"42842e0e","safeTransferFrom(address,address,uint256,bytes)":"b88d4fde","setApprovalForAll(address,bool)":"a22cb465","supportsInterface(bytes4)":"01ffc9a7","symbol()":"95d89b41","tokenURI(uint256)":"c87b56dd","transferFrom(address,address,uint256)":"23b872dd"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.24+commit.e11b9ed9\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"ERC721IncorrectOwner\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ERC721InsufficientApproval\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"approver\",\"type\":\"address\"}],\"name\":\"ERC721InvalidApprover\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"ERC721InvalidOperator\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"ERC721InvalidOwner\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"receiver\",\"type\":\"address\"}],\"name\":\"ERC721InvalidReceiver\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"ERC721InvalidSender\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ERC721NonexistentToken\",\"type\":\"error\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"ApprovalForAll\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including the Metadata extension, but not including the Enumerable extension, which is available separately as {ERC721Enumerable}.\",\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. Used in transfers.\",\"params\":{\"owner\":\"Address of the current owner of a token.\",\"sender\":\"Address whose tokens are being transferred.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InsufficientApproval(address,uint256)\":[{\"details\":\"Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC721InvalidOperator(address)\":[{\"details\":\"Indicates a failure with the `operator` to be approved. Used in approvals.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC721InvalidOwner(address)\":[{\"details\":\"Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. Used in balance queries.\",\"params\":{\"owner\":\"Address of the current owner of a token.\"}}],\"ERC721InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC721InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC721NonexistentToken(uint256)\":[{\"details\":\"Indicates a `tokenId` whose `owner` is the zero address.\",\"params\":{\"tokenId\":\"Identifier number of a token.\"}}]},\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"constructor\":{\"details\":\"Initializes the contract by setting a `name` and a `symbol` to the token collection.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See {IERC721-isApprovedForAll}.\"},\"name()\":{\"details\":\"See {IERC721Metadata-name}.\"},\"ownerOf(uint256)\":{\"details\":\"See {IERC721-ownerOf}.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"See {IERC721-setApprovalForAll}.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"},\"symbol()\":{\"details\":\"See {IERC721Metadata-symbol}.\"},\"tokenURI(uint256)\":{\"details\":\"See {IERC721Metadata-tokenURI}.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See 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","name":"ERC721InvalidOperator"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"type":"error","name":"ERC721InvalidOwner"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"type":"error","name":"ERC721InvalidReceiver"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"type":"error","name":"ERC721InvalidSender"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"type":"error","name":"ERC721NonexistentToken"},{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"approved","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Approval","anonymous":false},{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"operator","type":"address","indexed":true},{"internalType":"bool","name":"approved","type":"bool","indexed":false}],"type":"event","name":"ApprovalForAll","anonymous":false},{"inputs":[{"internalType":"address","name":"from","type":"address","indexed":true},{"internalType":"address","name":"to","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Transfer","anonymous":false},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"approve"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"view","type":"function","name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}]},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"stateMutability":"view","type":"function","name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"name","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"stateMutability":"nonpayable","type":"function","name":"setApprovalForAll"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"transferFrom"}],"devdoc":{"kind":"dev","methods":{"approve(address,uint256)":{"details":"See 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This will revert if the\n recipient doesn't accept the token transfer. The call is not executed if the target address is not a contract.\n @param from address representing the previous owner of the given token ID\n @param to target address that will receive the tokens\n @param tokenId uint256 ID of the token to be transferred\n @param data bytes optional data to send along with the call"},"implemented":true,"kind":"function","modifiers":[],"name":"_checkOnERC721Received","nameLocation":"16927:22:1","parameters":{"id":1090,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1083,"mutability":"mutable","name":"from","nameLocation":"16958:4:1","nodeType":"VariableDeclaration","scope":1144,"src":"16950:12:1","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1082,"name":"address","nodeType":"ElementaryTypeName","src":"16950:7:1","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1085,"mutability":"mutable","name":"to","nameLocation":"16972:2:1","nodeType":"VariableDeclaration","scope":1144,"src":"16964:10:1","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1084,"name":"address","nodeType":"ElementaryTypeName","src":"16964:7:1","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1087,"mutability":"mutable","name":"tokenId","nameLocation":"16984:7:1","nodeType":"VariableDeclaration","scope":1144,"src":"16976:15:1","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1086,"name":"uint256","nodeType":"ElementaryTypeName","src":"16976:7:1","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1089,"mutability":"mutable","name":"data","nameLocation":"17006:4:1","nodeType":"VariableDeclaration","scope":1144,"src":"16993:17:1","stateVariable":false,"storageLocation":"memory","typeDescriptions":{"typeIdentifier":"t_bytes_memory_ptr","typeString":"bytes"},"typeName":{"id":1088,"name":"bytes","nodeType":"ElementaryTypeName","src":"16993:5:1","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"16949:62:1"},"returnParameters":{"id":1091,"nodeType":"ParameterList","parameters":[],"src":"17020:0:1"},"scope":1145,"stateMutability":"nonpayable","virtual":false,"visibility":"private"}],"abstract":true,"baseContracts":[{"baseName":{"id":155,"name":"Context","nameLocations":["804:7:1"],"nodeType":"IdentifierPath","referencedDeclaration":1338,"src":"804:7:1"},"id":156,"nodeType":"InheritanceSpecifier","src":"804:7:1"},{"baseName":{"id":157,"name":"ERC165","nameLocations":["813:6:1"],"nodeType":"IdentifierPath","referencedDeclaration":1617,"src":"813:6:1"},"id":158,"nodeType":"InheritanceSpecifier","src":"813:6:1"},{"baseName":{"id":159,"name":"IERC721","nameLocations":["821:7:1"],"nodeType":"IdentifierPath","referencedDeclaration":1262,"src":"821:7:1"},"id":160,"nodeType":"InheritanceSpecifier","src":"821:7:1"},{"baseName":{"id":161,"name":"IERC721Metadata","nameLocations":["830:15:1"],"nodeType":"IdentifierPath","referencedDeclaration":1308,"src":"830:15:1"},"id":162,"nodeType":"InheritanceSpecifier","src":"830:15:1"},{"baseName":{"id":163,"name":"IERC721Errors","nameLocations":["847:13:1"],"nodeType":"IdentifierPath","referencedDeclaration":89,"src":"847:13:1"},"id":164,"nodeType":"InheritanceSpecifier","src":"847:13:1"}],"canonicalName":"ERC721","contractDependencies":[],"contractKind":"contract","documentation":{"id":154,"nodeType":"StructuredDocumentation","src":"529:246:1","text":" @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n the Metadata extension, but not including the Enumerable extension, which is available separately as\n {ERC721Enumerable}."},"fullyImplemented":true,"linearizedBaseContracts":[1145,89,1308,1262,1617,1629,1338],"name":"ERC721","nameLocation":"794:6:1","scope":1146,"usedErrors":[47,52,61,66,71,78,83,88],"usedEvents":[1161,1170,1179]}],"license":"MIT"},"id":1}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/IERC165.sol/IERC165.json b/examples/on-chain_mnist/contracts/out/IERC165.sol/IERC165.json
index 1fa989e..9598489 100644
--- a/examples/on-chain_mnist/contracts/out/IERC165.sol/IERC165.json
+++ b/examples/on-chain_mnist/contracts/out/IERC165.sol/IERC165.json
@@ -1 +1 @@
-{"abi":[{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"supportsInterface(bytes4)":"01ffc9a7"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.23+commit.f704f362\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Interface of the ERC165 standard, as defined in the https://eips.ethereum.org/EIPS/eip-165[EIP]. Implementers can declare support of contract interfaces, which can then be queried by others ({ERC165Checker}). For an implementation, see {ERC165}.\",\"kind\":\"dev\",\"methods\":{\"supportsInterface(bytes4)\":{\"details\":\"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol\":\"IERC165\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol\":{\"keccak256\":\"0x4296879f55019b23e135000eb36896057e7101fb7fb859c5ef690cf14643757b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://87b3541437c8c443ccd36795e56a338ed12855eec17f8da624511b8d1a7e14df\",\"dweb:/ipfs/QmeJQCtZrQjtJLr6u7ZHWeH3pBnjtLWzvRrKViAi7UZqxL\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.23+commit.f704f362"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]}],"devdoc":{"kind":"dev","methods":{"supportsInterface(bytes4)":{"details":"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol":"IERC165"},"libraries":{}},"sources":{"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol":{"keccak256":"0x4296879f55019b23e135000eb36896057e7101fb7fb859c5ef690cf14643757b","urls":["bzz-raw://87b3541437c8c443ccd36795e56a338ed12855eec17f8da624511b8d1a7e14df","dweb:/ipfs/QmeJQCtZrQjtJLr6u7ZHWeH3pBnjtLWzvRrKViAi7UZqxL"],"license":"MIT"}},"version":1},"ast":{"absolutePath":"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol","id":1630,"exportedSymbols":{"IERC165":[1629]},"nodeType":"SourceUnit","src":"115:754:8","nodes":[{"id":1619,"nodeType":"PragmaDirective","src":"115:24:8","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1629,"nodeType":"ContractDefinition","src":"421:447:8","nodes":[{"id":1628,"nodeType":"FunctionDefinition","src":"790:76:8","nodes":[],"documentation":{"id":1621,"nodeType":"StructuredDocumentation","src":"445:340:8","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"799:17:8","parameters":{"id":1624,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1623,"mutability":"mutable","name":"interfaceId","nameLocation":"824:11:8","nodeType":"VariableDeclaration","scope":1628,"src":"817:18:8","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1622,"name":"bytes4","nodeType":"ElementaryTypeName","src":"817:6:8","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"816:20:8"},"returnParameters":{"id":1627,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1626,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1628,"src":"860:4:8","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1625,"name":"bool","nodeType":"ElementaryTypeName","src":"860:4:8","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"859:6:8"},"scope":1629,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1620,"nodeType":"StructuredDocumentation","src":"141:279:8","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1629],"name":"IERC165","nameLocation":"431:7:8","scope":1630,"usedErrors":[],"usedEvents":[]}],"license":"MIT"},"id":8}
\ No newline at end of file
+{"abi":[{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"supportsInterface(bytes4)":"01ffc9a7"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.24+commit.e11b9ed9\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Interface of the ERC165 standard, as defined in the https://eips.ethereum.org/EIPS/eip-165[EIP]. Implementers can declare support of contract interfaces, which can then be queried by others ({ERC165Checker}). For an implementation, see {ERC165}.\",\"kind\":\"dev\",\"methods\":{\"supportsInterface(bytes4)\":{\"details\":\"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol\":\"IERC165\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol\":{\"keccak256\":\"0x4296879f55019b23e135000eb36896057e7101fb7fb859c5ef690cf14643757b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://87b3541437c8c443ccd36795e56a338ed12855eec17f8da624511b8d1a7e14df\",\"dweb:/ipfs/QmeJQCtZrQjtJLr6u7ZHWeH3pBnjtLWzvRrKViAi7UZqxL\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]}],"devdoc":{"kind":"dev","methods":{"supportsInterface(bytes4)":{"details":"Returns true if this contract implements the interface defined by `interfaceId`. 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This function call must use less than 30 000 gas."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol":"IERC165"},"evmVersion":"paris","libraries":{}},"sources":{"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol":{"keccak256":"0x4296879f55019b23e135000eb36896057e7101fb7fb859c5ef690cf14643757b","urls":["bzz-raw://87b3541437c8c443ccd36795e56a338ed12855eec17f8da624511b8d1a7e14df","dweb:/ipfs/QmeJQCtZrQjtJLr6u7ZHWeH3pBnjtLWzvRrKViAi7UZqxL"],"license":"MIT"}},"version":1},"ast":{"absolutePath":"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol","id":1630,"exportedSymbols":{"IERC165":[1629]},"nodeType":"SourceUnit","src":"115:754:8","nodes":[{"id":1619,"nodeType":"PragmaDirective","src":"115:24:8","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1629,"nodeType":"ContractDefinition","src":"421:447:8","nodes":[{"id":1628,"nodeType":"FunctionDefinition","src":"790:76:8","nodes":[],"documentation":{"id":1621,"nodeType":"StructuredDocumentation","src":"445:340:8","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"799:17:8","parameters":{"id":1624,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1623,"mutability":"mutable","name":"interfaceId","nameLocation":"824:11:8","nodeType":"VariableDeclaration","scope":1628,"src":"817:18:8","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1622,"name":"bytes4","nodeType":"ElementaryTypeName","src":"817:6:8","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"816:20:8"},"returnParameters":{"id":1627,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1626,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1628,"src":"860:4:8","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1625,"name":"bool","nodeType":"ElementaryTypeName","src":"860:4:8","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"859:6:8"},"scope":1629,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1620,"nodeType":"StructuredDocumentation","src":"141:279:8","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1629],"name":"IERC165","nameLocation":"431:7:8","scope":1630,"usedErrors":[],"usedEvents":[]}],"license":"MIT"},"id":8}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/IERC721.sol/IERC721.json b/examples/on-chain_mnist/contracts/out/IERC721.sol/IERC721.json
index 306dddc..d355336 100644
--- a/examples/on-chain_mnist/contracts/out/IERC721.sol/IERC721.json
+++ b/examples/on-chain_mnist/contracts/out/IERC721.sol/IERC721.json
@@ -1 +1 @@
-{"abi":[{"type":"function","name":"approve","inputs":[{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"balanceOf","inputs":[{"name":"owner","type":"address","internalType":"address"}],"outputs":[{"name":"balance","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getApproved","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"operator","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"isApprovedForAll","inputs":[{"name":"owner","type":"address","internalType":"address"},{"name":"operator","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"ownerOf","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"owner","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"setApprovalForAll","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"approved","type":"bool","internalType":"bool"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"transferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"event","name":"Approval","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"event","name":"ApprovalForAll","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"operator","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"bool","indexed":false,"internalType":"bool"}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"name":"from","type":"address","indexed":true,"internalType":"address"},{"name":"to","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"approve(address,uint256)":"095ea7b3","balanceOf(address)":"70a08231","getApproved(uint256)":"081812fc","isApprovedForAll(address,address)":"e985e9c5","ownerOf(uint256)":"6352211e","safeTransferFrom(address,address,uint256)":"42842e0e","safeTransferFrom(address,address,uint256,bytes)":"b88d4fde","setApprovalForAll(address,bool)":"a22cb465","supportsInterface(bytes4)":"01ffc9a7","transferFrom(address,address,uint256)":"23b872dd"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.23+commit.f704f362\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"ApprovalForAll\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":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@dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} 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@dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} 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@dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"3479:12:2","parameters":{"id":1225,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1220,"mutability":"mutable","name":"from","nameLocation":"3500:4:2","nodeType":"VariableDeclaration","scope":1227,"src":"3492:12:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1219,"name":"address","nodeType":"ElementaryTypeName","src":"3492:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1222,"mutability":"mutable","name":"to","nameLocation":"3514:2:2","nodeType":"VariableDeclaration","scope":1227,"src":"3506:10:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1221,"name":"address","nodeType":"ElementaryTypeName","src":"3506:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1224,"mutability":"mutable","name":"tokenId","nameLocation":"3526:7:2","nodeType":"VariableDeclaration","scope":1227,"src":"3518:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1223,"name":"uint256","nodeType":"ElementaryTypeName","src":"3518:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"3491:43:2"},"returnParameters":{"id":1226,"nodeType":"ParameterList","parameters":[],"src":"3543:0:2"},"scope":1262,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1235,"nodeType":"FunctionDefinition","src":"4007:55:2","nodes":[],"documentation":{"id":1228,"nodeType":"StructuredDocumentation","src":"3550:452:2","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"4016:7:2","parameters":{"id":1233,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1230,"mutability":"mutable","name":"to","nameLocation":"4032:2:2","nodeType":"VariableDeclaration","scope":1235,"src":"4024:10:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1229,"name":"address","nodeType":"ElementaryTypeName","src":"4024:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1232,"mutability":"mutable","name":"tokenId","nameLocation":"4044:7:2","nodeType":"VariableDeclaration","scope":1235,"src":"4036:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1231,"name":"uint256","nodeType":"ElementaryTypeName","src":"4036:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"4023:29:2"},"returnParameters":{"id":1234,"nodeType":"ParameterList","parameters":[],"src":"4061:0:2"},"scope":1262,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1243,"nodeType":"FunctionDefinition","src":"4388:69:2","nodes":[],"documentation":{"id":1236,"nodeType":"StructuredDocumentation","src":"4068:315:2","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"4397:17:2","parameters":{"id":1241,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1238,"mutability":"mutable","name":"operator","nameLocation":"4423:8:2","nodeType":"VariableDeclaration","scope":1243,"src":"4415:16:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1237,"name":"address","nodeType":"ElementaryTypeName","src":"4415:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1240,"mutability":"mutable","name":"approved","nameLocation":"4438:8:2","nodeType":"VariableDeclaration","scope":1243,"src":"4433:13:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1239,"name":"bool","nodeType":"ElementaryTypeName","src":"4433:4:2","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"4414:33:2"},"returnParameters":{"id":1242,"nodeType":"ParameterList","parameters":[],"src":"4456:0:2"},"scope":1262,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1251,"nodeType":"FunctionDefinition","src":"4607:79:2","nodes":[],"documentation":{"id":1244,"nodeType":"StructuredDocumentation","src":"4463:139:2","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"4616:11:2","parameters":{"id":1247,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1246,"mutability":"mutable","name":"tokenId","nameLocation":"4636:7:2","nodeType":"VariableDeclaration","scope":1251,"src":"4628:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1245,"name":"uint256","nodeType":"ElementaryTypeName","src":"4628:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"4627:17:2"},"returnParameters":{"id":1250,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1249,"mutability":"mutable","name":"operator","nameLocation":"4676:8:2","nodeType":"VariableDeclaration","scope":1251,"src":"4668:16:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1248,"name":"address","nodeType":"ElementaryTypeName","src":"4668:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"4667:18:2"},"scope":1262,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1261,"nodeType":"FunctionDefinition","src":"4835:88:2","nodes":[],"documentation":{"id":1252,"nodeType":"StructuredDocumentation","src":"4692:138:2","text":" @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n See {setApprovalForAll}"},"functionSelector":"e985e9c5","implemented":false,"kind":"function","modifiers":[],"name":"isApprovedForAll","nameLocation":"4844:16:2","parameters":{"id":1257,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1254,"mutability":"mutable","name":"owner","nameLocation":"4869:5:2","nodeType":"VariableDeclaration","scope":1261,"src":"4861:13:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1253,"name":"address","nodeType":"ElementaryTypeName","src":"4861:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1256,"mutability":"mutable","name":"operator","nameLocation":"4884:8:2","nodeType":"VariableDeclaration","scope":1261,"src":"4876:16:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1255,"name":"address","nodeType":"ElementaryTypeName","src":"4876:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"4860:33:2"},"returnParameters":{"id":1260,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1259,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1261,"src":"4917:4:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1258,"name":"bool","nodeType":"ElementaryTypeName","src":"4917:4:2","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"4916:6:2"},"scope":1262,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[{"baseName":{"id":1151,"name":"IERC165","nameLocations":["287:7:2"],"nodeType":"IdentifierPath","referencedDeclaration":1629,"src":"287:7:2"},"id":1152,"nodeType":"InheritanceSpecifier","src":"287:7:2"}],"canonicalName":"IERC721","contractDependencies":[],"contractKind":"interface","documentation":{"id":1150,"nodeType":"StructuredDocumentation","src":"198:67:2","text":" @dev Required interface of an ERC721 compliant contract."},"fullyImplemented":false,"linearizedBaseContracts":[1262,1629],"name":"IERC721","nameLocation":"276:7:2","scope":1263,"usedErrors":[],"usedEvents":[1161,1170,1179]}],"license":"MIT"},"id":2}
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assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"804:14:2","parameters":{"id":1178,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1173,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"835:5:2","nodeType":"VariableDeclaration","scope":1179,"src":"819:21:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1172,"name":"address","nodeType":"ElementaryTypeName","src":"819:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1175,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"858:8:2","nodeType":"VariableDeclaration","scope":1179,"src":"842:24:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1174,"name":"address","nodeType":"ElementaryTypeName","src":"842:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1177,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"873:8:2","nodeType":"VariableDeclaration","scope":1179,"src":"868:13:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1176,"name":"bool","nodeType":"ElementaryTypeName","src":"868:4:2","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"818:64:2"}},{"id":1187,"nodeType":"FunctionDefinition","src":"970:74:2","nodes":[],"documentation":{"id":1180,"nodeType":"StructuredDocumentation","src":"889:76:2","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"979:9:2","parameters":{"id":1183,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1182,"mutability":"mutable","name":"owner","nameLocation":"997:5:2","nodeType":"VariableDeclaration","scope":1187,"src":"989:13:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1181,"name":"address","nodeType":"ElementaryTypeName","src":"989:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"988:15:2"},"returnParameters":{"id":1186,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1185,"mutability":"mutable","name":"balance","nameLocation":"1035:7:2","nodeType":"VariableDeclaration","scope":1187,"src":"1027:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1184,"name":"uint256","nodeType":"ElementaryTypeName","src":"1027:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1026:17:2"},"scope":1262,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1195,"nodeType":"FunctionDefinition","src":"1186:72:2","nodes":[],"documentation":{"id":1188,"nodeType":"StructuredDocumentation","src":"1050:131:2","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"1195:7:2","parameters":{"id":1191,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1190,"mutability":"mutable","name":"tokenId","nameLocation":"1211:7:2","nodeType":"VariableDeclaration","scope":1195,"src":"1203:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1189,"name":"uint256","nodeType":"ElementaryTypeName","src":"1203:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1202:17:2"},"returnParameters":{"id":1194,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1193,"mutability":"mutable","name":"owner","nameLocation":"1251:5:2","nodeType":"VariableDeclaration","scope":1195,"src":"1243:13:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1192,"name":"address","nodeType":"ElementaryTypeName","src":"1243:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1242:15:2"},"scope":1262,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1207,"nodeType":"FunctionDefinition","src":"1834:99:2","nodes":[],"documentation":{"id":1196,"nodeType":"StructuredDocumentation","src":"1264:565:2","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"1843:16:2","parameters":{"id":1205,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1198,"mutability":"mutable","name":"from","nameLocation":"1868:4:2","nodeType":"VariableDeclaration","scope":1207,"src":"1860:12:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1197,"name":"address","nodeType":"ElementaryTypeName","src":"1860:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1200,"mutability":"mutable","name":"to","nameLocation":"1882:2:2","nodeType":"VariableDeclaration","scope":1207,"src":"1874:10:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1199,"name":"address","nodeType":"ElementaryTypeName","src":"1874:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1202,"mutability":"mutable","name":"tokenId","nameLocation":"1894:7:2","nodeType":"VariableDeclaration","scope":1207,"src":"1886:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1201,"name":"uint256","nodeType":"ElementaryTypeName","src":"1886:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1204,"mutability":"mutable","name":"data","nameLocation":"1918:4:2","nodeType":"VariableDeclaration","scope":1207,"src":"1903:19:2","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1203,"name":"bytes","nodeType":"ElementaryTypeName","src":"1903:5:2","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"1859:64:2"},"returnParameters":{"id":1206,"nodeType":"ParameterList","parameters":[],"src":"1932:0:2"},"scope":1262,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1217,"nodeType":"FunctionDefinition","src":"2649:78:2","nodes":[],"documentation":{"id":1208,"nodeType":"StructuredDocumentation","src":"1939:705:2","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"2658:16:2","parameters":{"id":1215,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1210,"mutability":"mutable","name":"from","nameLocation":"2683:4:2","nodeType":"VariableDeclaration","scope":1217,"src":"2675:12:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1209,"name":"address","nodeType":"ElementaryTypeName","src":"2675:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1212,"mutability":"mutable","name":"to","nameLocation":"2697:2:2","nodeType":"VariableDeclaration","scope":1217,"src":"2689:10:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1211,"name":"address","nodeType":"ElementaryTypeName","src":"2689:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1214,"mutability":"mutable","name":"tokenId","nameLocation":"2709:7:2","nodeType":"VariableDeclaration","scope":1217,"src":"2701:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1213,"name":"uint256","nodeType":"ElementaryTypeName","src":"2701:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"2674:43:2"},"returnParameters":{"id":1216,"nodeType":"ParameterList","parameters":[],"src":"2726:0:2"},"scope":1262,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1227,"nodeType":"FunctionDefinition","src":"3470:74:2","nodes":[],"documentation":{"id":1218,"nodeType":"StructuredDocumentation","src":"2733:732:2","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"3479:12:2","parameters":{"id":1225,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1220,"mutability":"mutable","name":"from","nameLocation":"3500:4:2","nodeType":"VariableDeclaration","scope":1227,"src":"3492:12:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1219,"name":"address","nodeType":"ElementaryTypeName","src":"3492:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1222,"mutability":"mutable","name":"to","nameLocation":"3514:2:2","nodeType":"VariableDeclaration","scope":1227,"src":"3506:10:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1221,"name":"address","nodeType":"ElementaryTypeName","src":"3506:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1224,"mutability":"mutable","name":"tokenId","nameLocation":"3526:7:2","nodeType":"VariableDeclaration","scope":1227,"src":"3518:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1223,"name":"uint256","nodeType":"ElementaryTypeName","src":"3518:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"3491:43:2"},"returnParameters":{"id":1226,"nodeType":"ParameterList","parameters":[],"src":"3543:0:2"},"scope":1262,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1235,"nodeType":"FunctionDefinition","src":"4007:55:2","nodes":[],"documentation":{"id":1228,"nodeType":"StructuredDocumentation","src":"3550:452:2","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"4016:7:2","parameters":{"id":1233,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1230,"mutability":"mutable","name":"to","nameLocation":"4032:2:2","nodeType":"VariableDeclaration","scope":1235,"src":"4024:10:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1229,"name":"address","nodeType":"ElementaryTypeName","src":"4024:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1232,"mutability":"mutable","name":"tokenId","nameLocation":"4044:7:2","nodeType":"VariableDeclaration","scope":1235,"src":"4036:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1231,"name":"uint256","nodeType":"ElementaryTypeName","src":"4036:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"4023:29:2"},"returnParameters":{"id":1234,"nodeType":"ParameterList","parameters":[],"src":"4061:0:2"},"scope":1262,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1243,"nodeType":"FunctionDefinition","src":"4388:69:2","nodes":[],"documentation":{"id":1236,"nodeType":"StructuredDocumentation","src":"4068:315:2","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"4397:17:2","parameters":{"id":1241,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1238,"mutability":"mutable","name":"operator","nameLocation":"4423:8:2","nodeType":"VariableDeclaration","scope":1243,"src":"4415:16:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1237,"name":"address","nodeType":"ElementaryTypeName","src":"4415:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1240,"mutability":"mutable","name":"approved","nameLocation":"4438:8:2","nodeType":"VariableDeclaration","scope":1243,"src":"4433:13:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1239,"name":"bool","nodeType":"ElementaryTypeName","src":"4433:4:2","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"4414:33:2"},"returnParameters":{"id":1242,"nodeType":"ParameterList","parameters":[],"src":"4456:0:2"},"scope":1262,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1251,"nodeType":"FunctionDefinition","src":"4607:79:2","nodes":[],"documentation":{"id":1244,"nodeType":"StructuredDocumentation","src":"4463:139:2","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"4616:11:2","parameters":{"id":1247,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1246,"mutability":"mutable","name":"tokenId","nameLocation":"4636:7:2","nodeType":"VariableDeclaration","scope":1251,"src":"4628:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1245,"name":"uint256","nodeType":"ElementaryTypeName","src":"4628:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"4627:17:2"},"returnParameters":{"id":1250,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1249,"mutability":"mutable","name":"operator","nameLocation":"4676:8:2","nodeType":"VariableDeclaration","scope":1251,"src":"4668:16:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1248,"name":"address","nodeType":"ElementaryTypeName","src":"4668:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"4667:18:2"},"scope":1262,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1261,"nodeType":"FunctionDefinition","src":"4835:88:2","nodes":[],"documentation":{"id":1252,"nodeType":"StructuredDocumentation","src":"4692:138:2","text":" @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n See {setApprovalForAll}"},"functionSelector":"e985e9c5","implemented":false,"kind":"function","modifiers":[],"name":"isApprovedForAll","nameLocation":"4844:16:2","parameters":{"id":1257,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1254,"mutability":"mutable","name":"owner","nameLocation":"4869:5:2","nodeType":"VariableDeclaration","scope":1261,"src":"4861:13:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1253,"name":"address","nodeType":"ElementaryTypeName","src":"4861:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1256,"mutability":"mutable","name":"operator","nameLocation":"4884:8:2","nodeType":"VariableDeclaration","scope":1261,"src":"4876:16:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1255,"name":"address","nodeType":"ElementaryTypeName","src":"4876:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"4860:33:2"},"returnParameters":{"id":1260,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1259,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1261,"src":"4917:4:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1258,"name":"bool","nodeType":"ElementaryTypeName","src":"4917:4:2","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"4916:6:2"},"scope":1262,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[{"baseName":{"id":1151,"name":"IERC165","nameLocations":["287:7:2"],"nodeType":"IdentifierPath","referencedDeclaration":1629,"src":"287:7:2"},"id":1152,"nodeType":"InheritanceSpecifier","src":"287:7:2"}],"canonicalName":"IERC721","contractDependencies":[],"contractKind":"interface","documentation":{"id":1150,"nodeType":"StructuredDocumentation","src":"198:67:2","text":" @dev Required interface of an ERC721 compliant contract."},"fullyImplemented":false,"linearizedBaseContracts":[1262,1629],"name":"IERC721","nameLocation":"276:7:2","scope":1263,"usedErrors":[],"usedEvents":[1161,1170,1179]}],"license":"MIT"},"id":2}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/IERC721Metadata.sol/IERC721Metadata.json b/examples/on-chain_mnist/contracts/out/IERC721Metadata.sol/IERC721Metadata.json
index cb4e4f2..e593845 100644
--- a/examples/on-chain_mnist/contracts/out/IERC721Metadata.sol/IERC721Metadata.json
+++ b/examples/on-chain_mnist/contracts/out/IERC721Metadata.sol/IERC721Metadata.json
@@ -1 +1 @@
-{"abi":[{"type":"function","name":"approve","inputs":[{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"balanceOf","inputs":[{"name":"owner","type":"address","internalType":"address"}],"outputs":[{"name":"balance","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getApproved","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"operator","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"isApprovedForAll","inputs":[{"name":"owner","type":"address","internalType":"address"},{"name":"operator","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"name","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"ownerOf","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"owner","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"setApprovalForAll","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"approved","type":"bool","internalType":"bool"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"symbol","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"tokenURI","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"transferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"event","name":"Approval","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"event","name":"ApprovalForAll","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"operator","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"bool","indexed":false,"internalType":"bool"}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"name":"from","type":"address","indexed":true,"internalType":"address"},{"name":"to","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"approve(address,uint256)":"095ea7b3","balanceOf(address)":"70a08231","getApproved(uint256)":"081812fc","isApprovedForAll(address,address)":"e985e9c5","name()":"06fdde03","ownerOf(uint256)":"6352211e","safeTransferFrom(address,address,uint256)":"42842e0e","safeTransferFrom(address,address,uint256,bytes)":"b88d4fde","setApprovalForAll(address,bool)":"a22cb465","supportsInterface(bytes4)":"01ffc9a7","symbol()":"95d89b41","tokenURI(uint256)":"c87b56dd","transferFrom(address,address,uint256)":"23b872dd"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.23+commit.f704f362\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexe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Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"setApprovalForAll(address,bool)":{"details":"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the address zero. Emits an {ApprovalForAll} event."},"supportsInterface(bytes4)":{"details":"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. 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@dev Returns the token collection 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@dev Returns the Uniform Resource Identifier (URI) for `tokenId` 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@title ERC-721 Non-Fungible Token Standard, optional metadata extension\n @dev See https://eips.ethereum.org/EIPS/eip-721"},"fullyImplemented":false,"linearizedBaseContracts":[1308,1262,1629],"name":"IERC721Metadata","nameLocation":"338:15:4","scope":1309,"usedErrors":[],"usedEvents":[1161,1170,1179]}],"license":"MIT"},"id":4}
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https://eips.ethereum.org/EIPS/eip-721\",\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"Gives permission to `to` to transfer `tokenId` token to another account. 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Requirements: - `tokenId` must exist."},"safeTransferFrom(address,address,uint256)":{"details":"Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must have been allowed to move this token by either {approve} or   {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"safeTransferFrom(address,address,uint256,bytes)":{"details":"Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"setApprovalForAll(address,bool)":{"details":"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the address zero. Emits an {ApprovalForAll} event."},"supportsInterface(bytes4)":{"details":"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas."},"symbol()":{"details":"Returns the token collection symbol."},"tokenURI(uint256)":{"details":"Returns the Uniform Resource Identifier (URI) for `tokenId` token."},"transferFrom(address,address,uint256)":{"details":"Transfers `tokenId` token from `from` to `to`. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"lib/openzeppelin-contracts/contracts/token/ERC721/extensions/IERC721Metadata.sol":"IERC721Metadata"},"evmVersion":"paris","libraries":{}},"sources":{"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721.sol":{"keccak256":"0x5ef46daa3b58ef2702279d514780316efaa952915ee1aa3396f041ee2982b0b4","urls":["bzz-raw://2f8f2a76e23b02fc69e8cd24c3cb47da6c7af3a2d6c3a382f8ac25c6e094ade7","dweb:/ipfs/QmPV4ZS4tPVv4mTCf9ejyZ1ai57EEibDRj7mN2ARDCLV5n"],"license":"MIT"},"lib/openzeppelin-contracts/contracts/token/ERC721/extensions/IERC721Metadata.sol":{"keccak256":"0x37d1aaaa5a2908a09e9dcf56a26ddf762ecf295afb5964695937344fc6802ce1","urls":["bzz-raw://ed0bfc1b92153c5000e50f4021367b931bbe96372ac6facec3c4961b72053d02","dweb:/ipfs/Qmbwp8VDerjS5SV1quwHH1oMXxPQ93fzfLVqJ2RCqbowGE"],"license":"MIT"},"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol":{"keccak256":"0x4296879f55019b23e135000eb36896057e7101fb7fb859c5ef690cf14643757b","urls":["bzz-raw://87b3541437c8c443ccd36795e56a338ed12855eec17f8da624511b8d1a7e14df","dweb:/ipfs/QmeJQCtZrQjtJLr6u7ZHWeH3pBnjtLWzvRrKViAi7UZqxL"],"license":"MIT"}},"version":1},"ast":{"absolutePath":"lib/openzeppelin-contracts/contracts/token/ERC721/extensions/IERC721Metadata.sol","id":1309,"exportedSymbols":{"IERC721":[1262],"IERC721Metadata":[1308]},"nodeType":"SourceUnit","src":"127:665:4","nodes":[{"id":1282,"nodeType":"PragmaDirective","src":"127:24:4","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1284,"nodeType":"ImportDirective","src":"153:39:4","nodes":[],"absolutePath":"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721.sol","file":"../IERC721.sol","nameLocation":"-1:-1:-1","scope":1309,"sourceUnit":1263,"symbolAliases":[{"foreign":{"id":1283,"name":"IERC721","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1262,"src":"161:7:4","typeDescriptions":{}},"nameLocation":"-1:-1:-1"}],"unitAlias":""},{"id":1308,"nodeType":"ContractDefinition","src":"328:463:4","nodes":[{"id":1293,"nodeType":"FunctionDefinition","src":"434:54:4","nodes":[],"documentation":{"id":1288,"nodeType":"StructuredDocumentation","src":"371:58:4","text":" @dev Returns the token collection name."},"functionSelector":"06fdde03","implemented":false,"kind":"function","modifiers":[],"name":"name","nameLocation":"443:4:4","parameters":{"id":1289,"nodeType":"ParameterList","parameters":[],"src":"447:2:4"},"returnParameters":{"id":1292,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1291,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1293,"src":"473:13:4","stateVariable":false,"storageLocation":"memory","typeDescriptions":{"typeIdentifier":"t_string_memory_ptr","typeString":"string"},"typeName":{"id":1290,"name":"string","nodeType":"ElementaryTypeName","src":"473:6:4","typeDescriptions":{"typeIdentifier":"t_string_storage_ptr","typeString":"string"}},"visibility":"internal"}],"src":"472:15:4"},"scope":1308,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1299,"nodeType":"FunctionDefinition","src":"559:56:4","nodes":[],"documentation":{"id":1294,"nodeType":"StructuredDocumentation","src":"494:60:4","text":" @dev Returns the token collection symbol."},"functionSelector":"95d89b41","implemented":false,"kind":"function","modifiers":[],"name":"symbol","nameLocation":"568:6:4","parameters":{"id":1295,"nodeType":"ParameterList","parameters":[],"src":"574:2:4"},"returnParameters":{"id":1298,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1297,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1299,"src":"600:13:4","stateVariable":false,"storageLocation":"memory","typeDescriptions":{"typeIdentifier":"t_string_memory_ptr","typeString":"string"},"typeName":{"id":1296,"name":"string","nodeType":"ElementaryTypeName","src":"600:6:4","typeDescriptions":{"typeIdentifier":"t_string_storage_ptr","typeString":"string"}},"visibility":"internal"}],"src":"599:15:4"},"scope":1308,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1307,"nodeType":"FunctionDefinition","src":"716:73:4","nodes":[],"documentation":{"id":1300,"nodeType":"StructuredDocumentation","src":"621:90:4","text":" @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token."},"functionSelector":"c87b56dd","implemented":false,"kind":"function","modifiers":[],"name":"tokenURI","nameLocation":"725:8:4","parameters":{"id":1303,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1302,"mutability":"mutable","name":"tokenId","nameLocation":"742:7:4","nodeType":"VariableDeclaration","scope":1307,"src":"734:15:4","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1301,"name":"uint256","nodeType":"ElementaryTypeName","src":"734:7:4","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"733:17:4"},"returnParameters":{"id":1306,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1305,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1307,"src":"774:13:4","stateVariable":false,"storageLocation":"memory","typeDescriptions":{"typeIdentifier":"t_string_memory_ptr","typeString":"string"},"typeName":{"id":1304,"name":"string","nodeType":"ElementaryTypeName","src":"774:6:4","typeDescriptions":{"typeIdentifier":"t_string_storage_ptr","typeString":"string"}},"visibility":"internal"}],"src":"773:15:4"},"scope":1308,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[{"baseName":{"id":1286,"name":"IERC721","nameLocations":["357:7:4"],"nodeType":"IdentifierPath","referencedDeclaration":1262,"src":"357:7:4"},"id":1287,"nodeType":"InheritanceSpecifier","src":"357:7:4"}],"canonicalName":"IERC721Metadata","contractDependencies":[],"contractKind":"interface","documentation":{"id":1285,"nodeType":"StructuredDocumentation","src":"194:133:4","text":" @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n @dev See https://eips.ethereum.org/EIPS/eip-721"},"fullyImplemented":false,"linearizedBaseContracts":[1308,1262,1629],"name":"IERC721Metadata","nameLocation":"338:15:4","scope":1309,"usedErrors":[],"usedEvents":[1161,1170,1179]}],"license":"MIT"},"id":4}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/IERC721Receiver.sol/IERC721Receiver.json b/examples/on-chain_mnist/contracts/out/IERC721Receiver.sol/IERC721Receiver.json
index b4dd84d..35e24a5 100644
--- a/examples/on-chain_mnist/contracts/out/IERC721Receiver.sol/IERC721Receiver.json
+++ b/examples/on-chain_mnist/contracts/out/IERC721Receiver.sol/IERC721Receiver.json
@@ -1 +1 @@
-{"abi":[{"type":"function","name":"onERC721Received","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"from","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[{"name":"","type":"bytes4","internalType":"bytes4"}],"stateMutability":"nonpayable"}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"onERC721Received(address,address,uint256,bytes)":"150b7a02"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.23+commit.f704f362\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"onERC721Received\",\"outputs\":[{\"internalType\":\"bytes4\",\"name\":\"\",\"type\":\"bytes4\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Interface for any contract that wants to support safeTransfers from ERC721 asset contracts.\",\"kind\":\"dev\",\"methods\":{\"onERC721Received(address,address,uint256,bytes)\":{\"details\":\"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\"}},\"title\":\"ERC721 token receiver interface\",\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol\":\"IERC721Receiver\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol\":{\"keccak256\":\"0x7f7a26306c79a65fb8b3b6c757cd74660c532cd8a02e165488e30027dd34ca49\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://d01e0b2b837ee2f628545e54d8715b49c7ef2befd08356c2e7f6c50dde8a1c22\",\"dweb:/ipfs/QmWBAn6y2D1xgftci97Z3qR9tQnkvwQpYwFwkTvDMvqU4i\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.23+commit.f704f362"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}]}],"devdoc":{"kind":"dev","methods":{"onERC721Received(address,address,uint256,bytes)":{"details":"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol":"IERC721Receiver"},"libraries":{}},"sources":{"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol":{"keccak256":"0x7f7a26306c79a65fb8b3b6c757cd74660c532cd8a02e165488e30027dd34ca49","urls":["bzz-raw://d01e0b2b837ee2f628545e54d8715b49c7ef2befd08356c2e7f6c50dde8a1c22","dweb:/ipfs/QmWBAn6y2D1xgftci97Z3qR9tQnkvwQpYwFwkTvDMvqU4i"],"license":"MIT"}},"version":1},"ast":{"absolutePath":"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol","id":1281,"exportedSymbols":{"IERC721Receiver":[1280]},"nodeType":"SourceUnit","src":"116:879:3","nodes":[{"id":1264,"nodeType":"PragmaDirective","src":"116:24:3","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1280,"nodeType":"ContractDefinition","src":"295:699:3","nodes":[{"id":1279,"nodeType":"FunctionDefinition","src":"832:160:3","nodes":[],"documentation":{"id":1266,"nodeType":"StructuredDocumentation","src":"327:500:3","text":" @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n by `operator` from `from`, this function is called.\n It must return its Solidity selector to confirm the token transfer.\n If any other value is returned or the interface is not implemented by the recipient, the transfer will be\n reverted.\n The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`."},"functionSelector":"150b7a02","implemented":false,"kind":"function","modifiers":[],"name":"onERC721Received","nameLocation":"841:16:3","parameters":{"id":1275,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1268,"mutability":"mutable","name":"operator","nameLocation":"875:8:3","nodeType":"VariableDeclaration","scope":1279,"src":"867:16:3","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1267,"name":"address","nodeType":"ElementaryTypeName","src":"867:7:3","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1270,"mutability":"mutable","name":"from","nameLocation":"901:4:3","nodeType":"VariableDeclaration","scope":1279,"src":"893:12:3","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1269,"name":"address","nodeType":"ElementaryTypeName","src":"893:7:3","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1272,"mutability":"mutable","name":"tokenId","nameLocation":"923:7:3","nodeType":"VariableDeclaration","scope":1279,"src":"915:15:3","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1271,"name":"uint256","nodeType":"ElementaryTypeName","src":"915:7:3","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1274,"mutability":"mutable","name":"data","nameLocation":"955:4:3","nodeType":"VariableDeclaration","scope":1279,"src":"940:19:3","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1273,"name":"bytes","nodeType":"ElementaryTypeName","src":"940:5:3","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"857:108:3"},"returnParameters":{"id":1278,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1277,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1279,"src":"984:6:3","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1276,"name":"bytes4","nodeType":"ElementaryTypeName","src":"984:6:3","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"983:8:3"},"scope":1280,"stateMutability":"nonpayable","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC721Receiver","contractDependencies":[],"contractKind":"interface","documentation":{"id":1265,"nodeType":"StructuredDocumentation","src":"142:152:3","text":" @title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1280],"name":"IERC721Receiver","nameLocation":"305:15:3","scope":1281,"usedErrors":[],"usedEvents":[]}],"license":"MIT"},"id":3}
\ No newline at end of file
+{"abi":[{"type":"function","name":"onERC721Received","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"from","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[{"name":"","type":"bytes4","internalType":"bytes4"}],"stateMutability":"nonpayable"}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"onERC721Received(address,address,uint256,bytes)":"150b7a02"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.24+commit.e11b9ed9\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"onERC721Received\",\"outputs\":[{\"internalType\":\"bytes4\",\"name\":\"\",\"type\":\"bytes4\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Interface for any contract that wants to support safeTransfers from ERC721 asset contracts.\",\"kind\":\"dev\",\"methods\":{\"onERC721Received(address,address,uint256,bytes)\":{\"details\":\"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\"}},\"title\":\"ERC721 token receiver interface\",\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol\":\"IERC721Receiver\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol\":{\"keccak256\":\"0x7f7a26306c79a65fb8b3b6c757cd74660c532cd8a02e165488e30027dd34ca49\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://d01e0b2b837ee2f628545e54d8715b49c7ef2befd08356c2e7f6c50dde8a1c22\",\"dweb:/ipfs/QmWBAn6y2D1xgftci97Z3qR9tQnkvwQpYwFwkTvDMvqU4i\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}]}],"devdoc":{"kind":"dev","methods":{"onERC721Received(address,address,uint256,bytes)":{"details":"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol":"IERC721Receiver"},"evmVersion":"paris","libraries":{}},"sources":{"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol":{"keccak256":"0x7f7a26306c79a65fb8b3b6c757cd74660c532cd8a02e165488e30027dd34ca49","urls":["bzz-raw://d01e0b2b837ee2f628545e54d8715b49c7ef2befd08356c2e7f6c50dde8a1c22","dweb:/ipfs/QmWBAn6y2D1xgftci97Z3qR9tQnkvwQpYwFwkTvDMvqU4i"],"license":"MIT"}},"version":1},"ast":{"absolutePath":"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol","id":1281,"exportedSymbols":{"IERC721Receiver":[1280]},"nodeType":"SourceUnit","src":"116:879:3","nodes":[{"id":1264,"nodeType":"PragmaDirective","src":"116:24:3","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1280,"nodeType":"ContractDefinition","src":"295:699:3","nodes":[{"id":1279,"nodeType":"FunctionDefinition","src":"832:160:3","nodes":[],"documentation":{"id":1266,"nodeType":"StructuredDocumentation","src":"327:500:3","text":" @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n by `operator` from `from`, this function is called.\n It must return its Solidity selector to confirm the token transfer.\n If any other value is returned or the interface is not implemented by the recipient, the transfer will be\n reverted.\n The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`."},"functionSelector":"150b7a02","implemented":false,"kind":"function","modifiers":[],"name":"onERC721Received","nameLocation":"841:16:3","parameters":{"id":1275,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1268,"mutability":"mutable","name":"operator","nameLocation":"875:8:3","nodeType":"VariableDeclaration","scope":1279,"src":"867:16:3","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1267,"name":"address","nodeType":"ElementaryTypeName","src":"867:7:3","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1270,"mutability":"mutable","name":"from","nameLocation":"901:4:3","nodeType":"VariableDeclaration","scope":1279,"src":"893:12:3","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1269,"name":"address","nodeType":"ElementaryTypeName","src":"893:7:3","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1272,"mutability":"mutable","name":"tokenId","nameLocation":"923:7:3","nodeType":"VariableDeclaration","scope":1279,"src":"915:15:3","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1271,"name":"uint256","nodeType":"ElementaryTypeName","src":"915:7:3","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1274,"mutability":"mutable","name":"data","nameLocation":"955:4:3","nodeType":"VariableDeclaration","scope":1279,"src":"940:19:3","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1273,"name":"bytes","nodeType":"ElementaryTypeName","src":"940:5:3","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"857:108:3"},"returnParameters":{"id":1278,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1277,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1279,"src":"984:6:3","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1276,"name":"bytes4","nodeType":"ElementaryTypeName","src":"984:6:3","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"983:8:3"},"scope":1280,"stateMutability":"nonpayable","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC721Receiver","contractDependencies":[],"contractKind":"interface","documentation":{"id":1265,"nodeType":"StructuredDocumentation","src":"142:152:3","text":" @title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1280],"name":"IERC721Receiver","nameLocation":"305:15:3","scope":1281,"usedErrors":[],"usedEvents":[]}],"license":"MIT"},"id":3}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json b/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json
index 2ebb294..072ccfa 100644
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json
@@ -1 +1 @@
-{"abi":[{"type":"constructor","inputs":[],"stateMutability":"nonpayable"},{"type":"fallback","stateMutability":"payable"},{"type":"receive","stateMutability":"payable"},{"type":"function","name":"approve","inputs":[{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"balanceOf","inputs":[{"name":"owner","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getApproved","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"getBalance","inputs":[],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"isApprovedForAll","inputs":[{"name":"owner","type":"address","internalType":"address"},{"name":"operator","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"mint","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"name","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"onERC721Received","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"from","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[{"name":"","type":"bytes4","internalType":"bytes4"}],"stateMutability":"nonpayable"},{"type":"function","name":"ownerOf","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"setApprovalForAll","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"approved","type":"bool","internalType":"bool"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"symbol","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"tokenExists","inputs":[{"name":"","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"tokenURI","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"transferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"event","name":"Approval","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"event","name":"ApprovalForAll","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"operator","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"bool","indexed":false,"internalType":"bool"}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"name":"from","type":"address","indexed":true,"internalType":"address"},{"name":"to","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"error","name":"ERC721IncorrectOwner","inputs":[{"name":"sender","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InsufficientApproval","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}]},{"type":"error","name":"ERC721InvalidApprover","inputs":[{"name":"approver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOperator","inputs":[{"name":"operator","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOwner","inputs":[{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidReceiver","inputs":[{"name":"receiver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidSender","inputs":[{"name":"sender","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721NonexistentToken","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}]}],"bytecode":{"object":"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\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"onERC721Received\",\"outputs\":[{\"internalType\":\"bytes4\",\"name\":\"\",\"type\":\"bytes4\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"tokenExists\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"}],\"devdoc\":{\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. Used in transfers.\",\"params\":{\"owner\":\"Address of the current owner of a token.\",\"sender\":\"Address whose tokens are being transferred.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InsufficientApproval(address,uint256)\":[{\"details\":\"Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC721InvalidOperator(address)\":[{\"details\":\"Indicates a failure with the `operator` to be approved. Used in approvals.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC721InvalidOwner(address)\":[{\"details\":\"Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. Used in balance queries.\",\"params\":{\"owner\":\"Address of the current owner of a token.\"}}],\"ERC721InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC721InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC721NonexistentToken(uint256)\":[{\"details\":\"Indicates a `tokenId` whose `owner` is the zero address.\",\"params\":{\"tokenId\":\"Identifier number of a token.\"}}]},\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See {IERC721-isApprovedForAll}.\"},\"name()\":{\"details\":\"See {IERC721Metadata-name}.\"},\"onERC721Received(address,address,uint256,bytes)\":{\"details\":\"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\"},\"ownerOf(uint256)\":{\"details\":\"See {IERC721-ownerOf}.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"See {IERC721-setApprovalForAll}.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"},\"symbol()\":{\"details\":\"See {IERC721Metadata-symbol}.\"},\"tokenURI(uint256)\":{\"details\":\"See {IERC721Metadata-tokenURI}.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See 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\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"onERC721Received\",\"outputs\":[{\"internalType\":\"bytes4\",\"name\":\"\",\"type\":\"bytes4\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"tokenExists\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"}],\"devdoc\":{\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. Used in transfers.\",\"params\":{\"owner\":\"Address of the current owner of a token.\",\"sender\":\"Address whose tokens are being transferred.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InsufficientApproval(address,uint256)\":[{\"details\":\"Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC721InvalidOperator(address)\":[{\"details\":\"Indicates a failure with the `operator` to be approved. Used in approvals.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC721InvalidOwner(address)\":[{\"details\":\"Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. Used in balance queries.\",\"params\":{\"owner\":\"Address of the current owner of a token.\"}}],\"ERC721InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC721InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC721NonexistentToken(uint256)\":[{\"details\":\"Indicates a `tokenId` whose `owner` is the zero address.\",\"params\":{\"tokenId\":\"Identifier number of a token.\"}}]},\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See {IERC721-isApprovedForAll}.\"},\"name()\":{\"details\":\"See {IERC721Metadata-name}.\"},\"onERC721Received(address,address,uint256,bytes)\":{\"details\":\"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\"},\"ownerOf(uint256)\":{\"details\":\"See {IERC721-ownerOf}.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"See {IERC721-setApprovalForAll}.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"},\"symbol()\":{\"details\":\"See {IERC721Metadata-symbol}.\"},\"tokenURI(uint256)\":{\"details\":\"See {IERC721Metadata-tokenURI}.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Context.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Context.json
new file mode 100644
index 0000000..fafc9af
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Context.json
@@ -0,0 +1 @@
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@title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC165.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC165.json
new file mode 100644
index 0000000..0ed55cf
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC165.json
@@ -0,0 +1 @@
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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC721.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC721.json
new file mode 100644
index 0000000..187963d
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC721.json
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Used in approvals.\n @param operator Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"ced3e100","name":"ERC1155InvalidOperator","nameLocation":"6158:22:0","parameters":{"id":127,"nodeType":"ParameterList","parameters":[{"constant":false,"id":126,"mutability":"mutable","name":"operator","nameLocation":"6189:8:0","nodeType":"VariableDeclaration","scope":128,"src":"6181:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":125,"name":"address","nodeType":"ElementaryTypeName","src":"6181:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"6180:18:0"}},{"id":135,"nodeType":"ErrorDefinition","src":"6490:73:0","nodes":[],"documentation":{"id":129,"nodeType":"StructuredDocumentation","src":"6205:280:0","text":" @dev Indicates an array length mismatch between ids and 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`IERC721Receiver.onERC721Received.selector`."},"functionSelector":"150b7a02","implemented":false,"kind":"function","modifiers":[],"name":"onERC721Received","nameLocation":"27899:16:0","parameters":{"id":1584,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1577,"mutability":"mutable","name":"operator","nameLocation":"27933:8:0","nodeType":"VariableDeclaration","scope":1588,"src":"27925:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1576,"name":"address","nodeType":"ElementaryTypeName","src":"27925:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1579,"mutability":"mutable","name":"from","nameLocation":"27959:4:0","nodeType":"VariableDeclaration","scope":1588,"src":"27951:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1578,"name":"address","nodeType":"ElementaryTypeName","src":"27951:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1581,"mutability":"mutable","name":"tokenId","nameLocation":"27981:7:0","nodeType":"VariableDeclaration","scope":1588,"src":"27973:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1580,"name":"uint256","nodeType":"ElementaryTypeName","src":"27973:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1583,"mutability":"mutable","name":"data","nameLocation":"28013:4:0","nodeType":"VariableDeclaration","scope":1588,"src":"27998:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1582,"name":"bytes","nodeType":"ElementaryTypeName","src":"27998:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"27915:108:0"},"returnParameters":{"id":1587,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1586,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1588,"src":"28042:6:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1585,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28042:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28041:8:0"},"scope":1589,"stateMutability":"nonpayable","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC721Receiver","contractDependencies":[],"contractKind":"interface","documentation":{"id":1574,"nodeType":"StructuredDocumentation","src":"27200:152:0","text":" @title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC1155Errors.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC1155Errors.json
new file mode 100644
index 0000000..1f45b73
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC1155Errors.json
@@ -0,0 +1 @@
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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC165.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC165.json
new file mode 100644
index 0000000..891983d
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC165.json
@@ -0,0 +1 @@
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For example, `address(0)` is a forbidden owner in EIP-20.\n Used in balance queries.\n @param owner Address of the current owner of a token."},"errorSelector":"89c62b64","name":"ERC721InvalidOwner","nameLocation":"2480:18:0","parameters":{"id":46,"nodeType":"ParameterList","parameters":[{"constant":false,"id":45,"mutability":"mutable","name":"owner","nameLocation":"2507:5:0","nodeType":"VariableDeclaration","scope":47,"src":"2499:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":44,"name":"address","nodeType":"ElementaryTypeName","src":"2499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2498:15:0"}},{"id":52,"nodeType":"ErrorDefinition","src":"2657:46:0","nodes":[],"documentation":{"id":48,"nodeType":"StructuredDocumentation","src":"2520:132:0","text":" @dev Indicates a `tokenId` whose `owner` is the zero address.\n @param tokenId Identifier number of a token."},"errorSelector":"7e273289","name":"ERC721NonexistentToken","nameLocation":"2663:22:0","parameters":{"id":51,"nodeType":"ParameterList","parameters":[{"constant":false,"id":50,"mutability":"mutable","name":"tokenId","nameLocation":"2694:7:0","nodeType":"VariableDeclaration","scope":52,"src":"2686:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":49,"name":"uint256","nodeType":"ElementaryTypeName","src":"2686:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"2685:17:0"}},{"id":61,"nodeType":"ErrorDefinition","src":"3003:75:0","nodes":[],"documentation":{"id":53,"nodeType":"StructuredDocumentation","src":"2709:289:0","text":" @dev Indicates an error related to the ownership over a particular token. 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Used in approvals.\n @param operator Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"ced3e100","name":"ERC1155InvalidOperator","nameLocation":"6158:22:0","parameters":{"id":127,"nodeType":"ParameterList","parameters":[{"constant":false,"id":126,"mutability":"mutable","name":"operator","nameLocation":"6189:8:0","nodeType":"VariableDeclaration","scope":128,"src":"6181:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":125,"name":"address","nodeType":"ElementaryTypeName","src":"6181:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"6180:18:0"}},{"id":135,"nodeType":"ErrorDefinition","src":"6490:73:0","nodes":[],"documentation":{"id":129,"nodeType":"StructuredDocumentation","src":"6205:280:0","text":" @dev Indicates an array length mismatch between ids and 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@title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC20Errors.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC20Errors.json
new file mode 100644
index 0000000..f44c46b
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC20Errors.json
@@ -0,0 +1 @@
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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721.json
new file mode 100644
index 0000000..18ec723
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721.json
@@ -0,0 +1 @@
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Requirements: - `tokenId` must exist.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must have been allowed to move this token by either {approve} or   {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the address zero. Emits an {ApprovalForAll} event.\"},\"supportsInterface(bytes4)\":{\"details\":\"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"Transfers `tokenId` token from `from` to `to`. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"src/MNISTNFT_Flattened.sol\":\"IERC721\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"src/MNISTNFT_Flattened.sol\":{\"keccak256\":\"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4\",\"urls\":[\"bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891\",\"dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"approved","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Approval","anonymous":false},{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"operator","type":"address","indexed":true},{"internalType":"bool","name":"approved","type":"bool","indexed":false}],"type":"event","name":"ApprovalForAll","anonymous":false},{"inputs":[{"internalType":"address","name":"from","type":"address","indexed":true},{"internalType":"address","name":"to","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Transfer","anonymous":false},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"approve"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"view","type":"function","name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"getApproved","outputs":[{"internalType":"address","name":"operator","type":"address"}]},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"stateMutability":"view","type":"function","name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"ownerOf","outputs":[{"internalType":"address","name":"owner","type":"address"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"stateMutability":"nonpayable","type":"function","name":"setApprovalForAll"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"transferFrom"}],"devdoc":{"kind":"dev","methods":{"approve(address,uint256)":{"details":"Gives permission to `to` to transfer `tokenId` token to another account. The approval is cleared when the token is transferred. Only a single account can be approved at a time, so approving the zero address clears previous approvals. Requirements: - The caller must own the token or be an approved operator. - `tokenId` must exist. Emits an {Approval} event."},"balanceOf(address)":{"details":"Returns the number of tokens in ``owner``'s account."},"getApproved(uint256)":{"details":"Returns the account approved for `tokenId` token. Requirements: - `tokenId` must exist."},"isApprovedForAll(address,address)":{"details":"Returns if the `operator` is allowed to manage all of the assets of `owner`. See {setApprovalForAll}"},"ownerOf(uint256)":{"details":"Returns the owner of the `tokenId` token. Requirements: - `tokenId` must exist."},"safeTransferFrom(address,address,uint256)":{"details":"Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must have been allowed to move this token by either {approve} or   {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"safeTransferFrom(address,address,uint256,bytes)":{"details":"Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"setApprovalForAll(address,bool)":{"details":"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the address zero. Emits an {ApprovalForAll} event."},"supportsInterface(bytes4)":{"details":"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas."},"transferFrom(address,address,uint256)":{"details":"Transfers `tokenId` token from `from` to `to`. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"src/MNISTNFT_Flattened.sol":"IERC721"},"evmVersion":"paris","libraries":{}},"sources":{"src/MNISTNFT_Flattened.sol":{"keccak256":"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4","urls":["bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891","dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif"],"license":null}},"version":1},"ast":{"absolutePath":"src/MNISTNFT_Flattened.sol","id":2845,"exportedSymbols":{"Context":[1572],"ERC165":[1621],"ERC721":[2753],"IERC1155Errors":[136],"IERC165":[1600],"IERC20Errors":[41],"IERC721":[1735],"IERC721Errors":[89],"IERC721Metadata":[1760],"IERC721Receiver":[1589],"MNISTNFT":[2844],"Math":[1293],"SignedMath":[240],"Strings":[1543]},"nodeType":"SourceUnit","src":"146:53875:0","nodes":[{"id":1,"nodeType":"PragmaDirective","src":"146:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":41,"nodeType":"ContractDefinition","src":"312:1764:0","nodes":[{"id":11,"nodeType":"ErrorDefinition","src":"655:80:0","nodes":[],"documentation":{"id":3,"nodeType":"StructuredDocumentation","src":"341:309:0","text":" @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param balance Current balance for the interacting account.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"e450d38c","name":"ERC20InsufficientBalance","nameLocation":"661:24:0","parameters":{"id":10,"nodeType":"ParameterList","parameters":[{"constant":false,"id":5,"mutability":"mutable","name":"sender","nameLocation":"694:6:0","nodeType":"VariableDeclaration","scope":11,"src":"686:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":4,"name":"address","nodeType":"ElementaryTypeName","src":"686:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":7,"mutability":"mutable","name":"balance","nameLocation":"710:7:0","nodeType":"VariableDeclaration","scope":11,"src":"702:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":6,"name":"uint256","nodeType":"ElementaryTypeName","src":"702:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":9,"mutability":"mutable","name":"needed","nameLocation":"727:6:0","nodeType":"VariableDeclaration","scope":11,"src":"719:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":8,"name":"uint256","nodeType":"ElementaryTypeName","src":"719:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"685:49:0"}},{"id":16,"nodeType":"ErrorDefinition","src":"898:41:0","nodes":[],"documentation":{"id":12,"nodeType":"StructuredDocumentation","src":"741:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"96c6fd1e","name":"ERC20InvalidSender","nameLocation":"904:18:0","parameters":{"id":15,"nodeType":"ParameterList","parameters":[{"constant":false,"id":14,"mutability":"mutable","name":"sender","nameLocation":"931:6:0","nodeType":"VariableDeclaration","scope":16,"src":"923:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":13,"name":"address","nodeType":"ElementaryTypeName","src":"923:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"922:16:0"}},{"id":21,"nodeType":"ErrorDefinition","src":"1109:45:0","nodes":[],"documentation":{"id":17,"nodeType":"StructuredDocumentation","src":"945:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"ec442f05","name":"ERC20InvalidReceiver","nameLocation":"1115:20:0","parameters":{"id":20,"nodeType":"ParameterList","parameters":[{"constant":false,"id":19,"mutability":"mutable","name":"receiver","nameLocation":"1144:8:0","nodeType":"VariableDeclaration","scope":21,"src":"1136:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":18,"name":"address","nodeType":"ElementaryTypeName","src":"1136:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1135:18:0"}},{"id":30,"nodeType":"ErrorDefinition","src":"1510:85:0","nodes":[],"documentation":{"id":22,"nodeType":"StructuredDocumentation","src":"1160:345:0","text":" @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.\n @param spender Address that may be allowed to operate on tokens without being their owner.\n @param allowance Amount of tokens a `spender` is allowed to operate with.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"fb8f41b2","name":"ERC20InsufficientAllowance","nameLocation":"1516:26:0","parameters":{"id":29,"nodeType":"ParameterList","parameters":[{"constant":false,"id":24,"mutability":"mutable","name":"spender","nameLocation":"1551:7:0","nodeType":"VariableDeclaration","scope":30,"src":"1543:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":23,"name":"address","nodeType":"ElementaryTypeName","src":"1543:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":26,"mutability":"mutable","name":"allowance","nameLocation":"1568:9:0","nodeType":"VariableDeclaration","scope":30,"src":"1560:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":25,"name":"uint256","nodeType":"ElementaryTypeName","src":"1560:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":28,"mutability":"mutable","name":"needed","nameLocation":"1587:6:0","nodeType":"VariableDeclaration","scope":30,"src":"1579:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":27,"name":"uint256","nodeType":"ElementaryTypeName","src":"1579:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1542:52:0"}},{"id":35,"nodeType":"ErrorDefinition","src":"1780:45:0","nodes":[],"documentation":{"id":31,"nodeType":"StructuredDocumentation","src":"1601:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"e602df05","name":"ERC20InvalidApprover","nameLocation":"1786:20:0","parameters":{"id":34,"nodeType":"ParameterList","parameters":[{"constant":false,"id":33,"mutability":"mutable","name":"approver","nameLocation":"1815:8:0","nodeType":"VariableDeclaration","scope":35,"src":"1807:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":32,"name":"address","nodeType":"ElementaryTypeName","src":"1807:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1806:18:0"}},{"id":40,"nodeType":"ErrorDefinition","src":"2031:43:0","nodes":[],"documentation":{"id":36,"nodeType":"StructuredDocumentation","src":"1831:195:0","text":" @dev Indicates a failure with the `spender` to be approved. Used in approvals.\n @param spender Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"94280d62","name":"ERC20InvalidSpender","nameLocation":"2037:19:0","parameters":{"id":39,"nodeType":"ParameterList","parameters":[{"constant":false,"id":38,"mutability":"mutable","name":"spender","nameLocation":"2065:7:0","nodeType":"VariableDeclaration","scope":40,"src":"2057:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":37,"name":"address","nodeType":"ElementaryTypeName","src":"2057:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2056:17:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC20Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":2,"nodeType":"StructuredDocumentation","src":"172:139:0","text":" @dev Standard ERC20 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[41],"name":"IERC20Errors","nameLocation":"322:12:0","scope":2845,"usedErrors":[11,16,21,30,35,40],"usedEvents":[]},{"id":89,"nodeType":"ContractDefinition","src":"2220:2092:0","nodes":[{"id":47,"nodeType":"ErrorDefinition","src":"2474:40:0","nodes":[],"documentation":{"id":43,"nodeType":"StructuredDocumentation","src":"2250:219:0","text":" @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.\n Used in balance queries.\n @param owner Address of the current owner of a token."},"errorSelector":"89c62b64","name":"ERC721InvalidOwner","nameLocation":"2480:18:0","parameters":{"id":46,"nodeType":"ParameterList","parameters":[{"constant":false,"id":45,"mutability":"mutable","name":"owner","nameLocation":"2507:5:0","nodeType":"VariableDeclaration","scope":47,"src":"2499:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":44,"name":"address","nodeType":"ElementaryTypeName","src":"2499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2498:15:0"}},{"id":52,"nodeType":"ErrorDefinition","src":"2657:46:0","nodes":[],"documentation":{"id":48,"nodeType":"StructuredDocumentation","src":"2520:132:0","text":" @dev Indicates a `tokenId` whose `owner` is the zero address.\n @param tokenId Identifier number of a token."},"errorSelector":"7e273289","name":"ERC721NonexistentToken","nameLocation":"2663:22:0","parameters":{"id":51,"nodeType":"ParameterList","parameters":[{"constant":false,"id":50,"mutability":"mutable","name":"tokenId","nameLocation":"2694:7:0","nodeType":"VariableDeclaration","scope":52,"src":"2686:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":49,"name":"uint256","nodeType":"ElementaryTypeName","src":"2686:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"2685:17:0"}},{"id":61,"nodeType":"ErrorDefinition","src":"3003:75:0","nodes":[],"documentation":{"id":53,"nodeType":"StructuredDocumentation","src":"2709:289:0","text":" @dev Indicates an error related to the ownership over a particular token. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param tokenId Identifier number of a token.\n @param owner Address of the current owner of a token."},"errorSelector":"64283d7b","name":"ERC721IncorrectOwner","nameLocation":"3009:20:0","parameters":{"id":60,"nodeType":"ParameterList","parameters":[{"constant":false,"id":55,"mutability":"mutable","name":"sender","nameLocation":"3038:6:0","nodeType":"VariableDeclaration","scope":61,"src":"3030:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":54,"name":"address","nodeType":"ElementaryTypeName","src":"3030:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":57,"mutability":"mutable","name":"tokenId","nameLocation":"3054:7:0","nodeType":"VariableDeclaration","scope":61,"src":"3046:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":56,"name":"uint256","nodeType":"ElementaryTypeName","src":"3046:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":59,"mutability":"mutable","name":"owner","nameLocation":"3071:5:0","nodeType":"VariableDeclaration","scope":61,"src":"3063:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":58,"name":"address","nodeType":"ElementaryTypeName","src":"3063:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3029:48:0"}},{"id":66,"nodeType":"ErrorDefinition","src":"3241:42:0","nodes":[],"documentation":{"id":62,"nodeType":"StructuredDocumentation","src":"3084:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"73c6ac6e","name":"ERC721InvalidSender","nameLocation":"3247:19:0","parameters":{"id":65,"nodeType":"ParameterList","parameters":[{"constant":false,"id":64,"mutability":"mutable","name":"sender","nameLocation":"3275:6:0","nodeType":"VariableDeclaration","scope":66,"src":"3267:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":63,"name":"address","nodeType":"ElementaryTypeName","src":"3267:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3266:16:0"}},{"id":71,"nodeType":"ErrorDefinition","src":"3453:46:0","nodes":[],"documentation":{"id":67,"nodeType":"StructuredDocumentation","src":"3289:159:0","text":" @dev Indicates a failure with the token `receiver`. 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@title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Errors.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Errors.json
new file mode 100644
index 0000000..43ed05e
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Errors.json
@@ -0,0 +1 @@
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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Metadata.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Metadata.json
new file mode 100644
index 0000000..46f94cc
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Metadata.json
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Requirements: - `tokenId` must exist.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must have been allowed to move this token by either {approve} or   {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the address zero. Emits an {ApprovalForAll} event.\"},\"supportsInterface(bytes4)\":{\"details\":\"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas.\"},\"symbol()\":{\"details\":\"Returns the token collection symbol.\"},\"tokenURI(uint256)\":{\"details\":\"Returns the Uniform Resource Identifier (URI) for `tokenId` token.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"Transfers `tokenId` token from `from` to `to`. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event.\"}},\"title\":\"ERC-721 Non-Fungible Token Standard, optional metadata extension\",\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"src/MNISTNFT_Flattened.sol\":\"IERC721Metadata\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"src/MNISTNFT_Flattened.sol\":{\"keccak256\":\"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4\",\"urls\":[\"bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891\",\"dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"approved","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Approval","anonymous":false},{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"operator","type":"address","indexed":true},{"internalType":"bool","name":"approved","type":"bool","indexed":false}],"type":"event","name":"ApprovalForAll","anonymous":false},{"inputs":[{"internalType":"address","name":"from","type":"address","indexed":true},{"internalType":"address","name":"to","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Transfer","anonymous":false},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"approve"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"view","type":"function","name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"getApproved","outputs":[{"internalType":"address","name":"operator","type":"address"}]},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"stateMutability":"view","type":"function","name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"name","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"ownerOf","outputs":[{"internalType":"address","name":"owner","type":"address"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"stateMutability":"nonpayable","type":"function","name":"setApprovalForAll"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"transferFrom"}],"devdoc":{"kind":"dev","methods":{"approve(address,uint256)":{"details":"Gives permission to `to` to transfer `tokenId` token to another account. The approval is cleared when the token is transferred. Only a single account can be approved at a time, so approving the zero address clears previous approvals. Requirements: - The caller must own the token or be an approved operator. - `tokenId` must exist. Emits an {Approval} event."},"balanceOf(address)":{"details":"Returns the number of tokens in ``owner``'s account."},"getApproved(uint256)":{"details":"Returns the account approved for `tokenId` token. Requirements: - `tokenId` must exist."},"isApprovedForAll(address,address)":{"details":"Returns if the `operator` is allowed to manage all of the assets of `owner`. See {setApprovalForAll}"},"name()":{"details":"Returns the token collection name."},"ownerOf(uint256)":{"details":"Returns the owner of the `tokenId` token. Requirements: - `tokenId` must exist."},"safeTransferFrom(address,address,uint256)":{"details":"Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must have been allowed to move this token by either {approve} or   {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"safeTransferFrom(address,address,uint256,bytes)":{"details":"Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"setApprovalForAll(address,bool)":{"details":"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the address zero. Emits an {ApprovalForAll} event."},"supportsInterface(bytes4)":{"details":"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas."},"symbol()":{"details":"Returns the token collection symbol."},"tokenURI(uint256)":{"details":"Returns the Uniform Resource Identifier (URI) for `tokenId` token."},"transferFrom(address,address,uint256)":{"details":"Transfers `tokenId` token from `from` to `to`. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"src/MNISTNFT_Flattened.sol":"IERC721Metadata"},"evmVersion":"paris","libraries":{}},"sources":{"src/MNISTNFT_Flattened.sol":{"keccak256":"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4","urls":["bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891","dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif"],"license":null}},"version":1},"ast":{"absolutePath":"src/MNISTNFT_Flattened.sol","id":2845,"exportedSymbols":{"Context":[1572],"ERC165":[1621],"ERC721":[2753],"IERC1155Errors":[136],"IERC165":[1600],"IERC20Errors":[41],"IERC721":[1735],"IERC721Errors":[89],"IERC721Metadata":[1760],"IERC721Receiver":[1589],"MNISTNFT":[2844],"Math":[1293],"SignedMath":[240],"Strings":[1543]},"nodeType":"SourceUnit","src":"146:53875:0","nodes":[{"id":1,"nodeType":"PragmaDirective","src":"146:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":41,"nodeType":"ContractDefinition","src":"312:1764:0","nodes":[{"id":11,"nodeType":"ErrorDefinition","src":"655:80:0","nodes":[],"documentation":{"id":3,"nodeType":"StructuredDocumentation","src":"341:309:0","text":" @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param balance Current balance for the interacting account.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"e450d38c","name":"ERC20InsufficientBalance","nameLocation":"661:24:0","parameters":{"id":10,"nodeType":"ParameterList","parameters":[{"constant":false,"id":5,"mutability":"mutable","name":"sender","nameLocation":"694:6:0","nodeType":"VariableDeclaration","scope":11,"src":"686:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":4,"name":"address","nodeType":"ElementaryTypeName","src":"686:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":7,"mutability":"mutable","name":"balance","nameLocation":"710:7:0","nodeType":"VariableDeclaration","scope":11,"src":"702:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":6,"name":"uint256","nodeType":"ElementaryTypeName","src":"702:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":9,"mutability":"mutable","name":"needed","nameLocation":"727:6:0","nodeType":"VariableDeclaration","scope":11,"src":"719:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":8,"name":"uint256","nodeType":"ElementaryTypeName","src":"719:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"685:49:0"}},{"id":16,"nodeType":"ErrorDefinition","src":"898:41:0","nodes":[],"documentation":{"id":12,"nodeType":"StructuredDocumentation","src":"741:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"96c6fd1e","name":"ERC20InvalidSender","nameLocation":"904:18:0","parameters":{"id":15,"nodeType":"ParameterList","parameters":[{"constant":false,"id":14,"mutability":"mutable","name":"sender","nameLocation":"931:6:0","nodeType":"VariableDeclaration","scope":16,"src":"923:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":13,"name":"address","nodeType":"ElementaryTypeName","src":"923:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"922:16:0"}},{"id":21,"nodeType":"ErrorDefinition","src":"1109:45:0","nodes":[],"documentation":{"id":17,"nodeType":"StructuredDocumentation","src":"945:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"ec442f05","name":"ERC20InvalidReceiver","nameLocation":"1115:20:0","parameters":{"id":20,"nodeType":"ParameterList","parameters":[{"constant":false,"id":19,"mutability":"mutable","name":"receiver","nameLocation":"1144:8:0","nodeType":"VariableDeclaration","scope":21,"src":"1136:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":18,"name":"address","nodeType":"ElementaryTypeName","src":"1136:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1135:18:0"}},{"id":30,"nodeType":"ErrorDefinition","src":"1510:85:0","nodes":[],"documentation":{"id":22,"nodeType":"StructuredDocumentation","src":"1160:345:0","text":" @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.\n @param spender Address that may be allowed to operate on tokens without being their owner.\n @param allowance Amount of tokens a `spender` is allowed to operate with.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"fb8f41b2","name":"ERC20InsufficientAllowance","nameLocation":"1516:26:0","parameters":{"id":29,"nodeType":"ParameterList","parameters":[{"constant":false,"id":24,"mutability":"mutable","name":"spender","nameLocation":"1551:7:0","nodeType":"VariableDeclaration","scope":30,"src":"1543:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":23,"name":"address","nodeType":"ElementaryTypeName","src":"1543:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":26,"mutability":"mutable","name":"allowance","nameLocation":"1568:9:0","nodeType":"VariableDeclaration","scope":30,"src":"1560:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":25,"name":"uint256","nodeType":"ElementaryTypeName","src":"1560:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":28,"mutability":"mutable","name":"needed","nameLocation":"1587:6:0","nodeType":"VariableDeclaration","scope":30,"src":"1579:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":27,"name":"uint256","nodeType":"ElementaryTypeName","src":"1579:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1542:52:0"}},{"id":35,"nodeType":"ErrorDefinition","src":"1780:45:0","nodes":[],"documentation":{"id":31,"nodeType":"StructuredDocumentation","src":"1601:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"e602df05","name":"ERC20InvalidApprover","nameLocation":"1786:20:0","parameters":{"id":34,"nodeType":"ParameterList","parameters":[{"constant":false,"id":33,"mutability":"mutable","name":"approver","nameLocation":"1815:8:0","nodeType":"VariableDeclaration","scope":35,"src":"1807:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":32,"name":"address","nodeType":"ElementaryTypeName","src":"1807:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1806:18:0"}},{"id":40,"nodeType":"ErrorDefinition","src":"2031:43:0","nodes":[],"documentation":{"id":36,"nodeType":"StructuredDocumentation","src":"1831:195:0","text":" @dev Indicates a failure with the `spender` to be approved. Used in approvals.\n @param spender Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"94280d62","name":"ERC20InvalidSpender","nameLocation":"2037:19:0","parameters":{"id":39,"nodeType":"ParameterList","parameters":[{"constant":false,"id":38,"mutability":"mutable","name":"spender","nameLocation":"2065:7:0","nodeType":"VariableDeclaration","scope":40,"src":"2057:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":37,"name":"address","nodeType":"ElementaryTypeName","src":"2057:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2056:17:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC20Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":2,"nodeType":"StructuredDocumentation","src":"172:139:0","text":" @dev Standard ERC20 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[41],"name":"IERC20Errors","nameLocation":"322:12:0","scope":2845,"usedErrors":[11,16,21,30,35,40],"usedEvents":[]},{"id":89,"nodeType":"ContractDefinition","src":"2220:2092:0","nodes":[{"id":47,"nodeType":"ErrorDefinition","src":"2474:40:0","nodes":[],"documentation":{"id":43,"nodeType":"StructuredDocumentation","src":"2250:219:0","text":" @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.\n Used in balance queries.\n @param owner Address of the current owner of a token."},"errorSelector":"89c62b64","name":"ERC721InvalidOwner","nameLocation":"2480:18:0","parameters":{"id":46,"nodeType":"ParameterList","parameters":[{"constant":false,"id":45,"mutability":"mutable","name":"owner","nameLocation":"2507:5:0","nodeType":"VariableDeclaration","scope":47,"src":"2499:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":44,"name":"address","nodeType":"ElementaryTypeName","src":"2499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2498:15:0"}},{"id":52,"nodeType":"ErrorDefinition","src":"2657:46:0","nodes":[],"documentation":{"id":48,"nodeType":"StructuredDocumentation","src":"2520:132:0","text":" @dev Indicates a `tokenId` whose `owner` is the zero address.\n @param tokenId Identifier number of a token."},"errorSelector":"7e273289","name":"ERC721NonexistentToken","nameLocation":"2663:22:0","parameters":{"id":51,"nodeType":"ParameterList","parameters":[{"constant":false,"id":50,"mutability":"mutable","name":"tokenId","nameLocation":"2694:7:0","nodeType":"VariableDeclaration","scope":52,"src":"2686:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":49,"name":"uint256","nodeType":"ElementaryTypeName","src":"2686:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"2685:17:0"}},{"id":61,"nodeType":"ErrorDefinition","src":"3003:75:0","nodes":[],"documentation":{"id":53,"nodeType":"StructuredDocumentation","src":"2709:289:0","text":" @dev Indicates an error related to the ownership over a particular token. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param tokenId Identifier number of a token.\n @param owner Address of the current owner of a token."},"errorSelector":"64283d7b","name":"ERC721IncorrectOwner","nameLocation":"3009:20:0","parameters":{"id":60,"nodeType":"ParameterList","parameters":[{"constant":false,"id":55,"mutability":"mutable","name":"sender","nameLocation":"3038:6:0","nodeType":"VariableDeclaration","scope":61,"src":"3030:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":54,"name":"address","nodeType":"ElementaryTypeName","src":"3030:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":57,"mutability":"mutable","name":"tokenId","nameLocation":"3054:7:0","nodeType":"VariableDeclaration","scope":61,"src":"3046:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":56,"name":"uint256","nodeType":"ElementaryTypeName","src":"3046:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":59,"mutability":"mutable","name":"owner","nameLocation":"3071:5:0","nodeType":"VariableDeclaration","scope":61,"src":"3063:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":58,"name":"address","nodeType":"ElementaryTypeName","src":"3063:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3029:48:0"}},{"id":66,"nodeType":"ErrorDefinition","src":"3241:42:0","nodes":[],"documentation":{"id":62,"nodeType":"StructuredDocumentation","src":"3084:152:0","text":" @dev Indicates a failure with the token `sender`. 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@title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Receiver.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Receiver.json
new file mode 100644
index 0000000..1757c87
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Receiver.json
@@ -0,0 +1 @@
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The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\"}},\"title\":\"ERC721 token receiver interface\",\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"src/MNISTNFT_Flattened.sol\":\"IERC721Receiver\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"src/MNISTNFT_Flattened.sol\":{\"keccak256\":\"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4\",\"urls\":[\"bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891\",\"dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}]}],"devdoc":{"kind":"dev","methods":{"onERC721Received(address,address,uint256,bytes)":{"details":"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. 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The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"src/MNISTNFT_Flattened.sol":"IERC721Receiver"},"evmVersion":"paris","libraries":{}},"sources":{"src/MNISTNFT_Flattened.sol":{"keccak256":"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4","urls":["bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891","dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif"],"license":null}},"version":1},"ast":{"absolutePath":"src/MNISTNFT_Flattened.sol","id":2845,"exportedSymbols":{"Context":[1572],"ERC165":[1621],"ERC721":[2753],"IERC1155Errors":[136],"IERC165":[1600],"IERC20Errors":[41],"IERC721":[1735],"IERC721Errors":[89],"IERC721Metadata":[1760],"IERC721Receiver":[1589],"MNISTNFT":[2844],"Math":[1293],"SignedMath":[240],"Strings":[1543]},"nodeType":"SourceUnit","src":"146:53875:0","nodes":[{"id":1,"nodeType":"PragmaDirective","src":"146:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":41,"nodeType":"ContractDefinition","src":"312:1764:0","nodes":[{"id":11,"nodeType":"ErrorDefinition","src":"655:80:0","nodes":[],"documentation":{"id":3,"nodeType":"StructuredDocumentation","src":"341:309:0","text":" @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param balance Current balance for the interacting account.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"e450d38c","name":"ERC20InsufficientBalance","nameLocation":"661:24:0","parameters":{"id":10,"nodeType":"ParameterList","parameters":[{"constant":false,"id":5,"mutability":"mutable","name":"sender","nameLocation":"694:6:0","nodeType":"VariableDeclaration","scope":11,"src":"686:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":4,"name":"address","nodeType":"ElementaryTypeName","src":"686:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":7,"mutability":"mutable","name":"balance","nameLocation":"710:7:0","nodeType":"VariableDeclaration","scope":11,"src":"702:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":6,"name":"uint256","nodeType":"ElementaryTypeName","src":"702:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":9,"mutability":"mutable","name":"needed","nameLocation":"727:6:0","nodeType":"VariableDeclaration","scope":11,"src":"719:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":8,"name":"uint256","nodeType":"ElementaryTypeName","src":"719:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"685:49:0"}},{"id":16,"nodeType":"ErrorDefinition","src":"898:41:0","nodes":[],"documentation":{"id":12,"nodeType":"StructuredDocumentation","src":"741:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"96c6fd1e","name":"ERC20InvalidSender","nameLocation":"904:18:0","parameters":{"id":15,"nodeType":"ParameterList","parameters":[{"constant":false,"id":14,"mutability":"mutable","name":"sender","nameLocation":"931:6:0","nodeType":"VariableDeclaration","scope":16,"src":"923:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":13,"name":"address","nodeType":"ElementaryTypeName","src":"923:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"922:16:0"}},{"id":21,"nodeType":"ErrorDefinition","src":"1109:45:0","nodes":[],"documentation":{"id":17,"nodeType":"StructuredDocumentation","src":"945:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"ec442f05","name":"ERC20InvalidReceiver","nameLocation":"1115:20:0","parameters":{"id":20,"nodeType":"ParameterList","parameters":[{"constant":false,"id":19,"mutability":"mutable","name":"receiver","nameLocation":"1144:8:0","nodeType":"VariableDeclaration","scope":21,"src":"1136:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":18,"name":"address","nodeType":"ElementaryTypeName","src":"1136:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1135:18:0"}},{"id":30,"nodeType":"ErrorDefinition","src":"1510:85:0","nodes":[],"documentation":{"id":22,"nodeType":"StructuredDocumentation","src":"1160:345:0","text":" @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.\n @param spender Address that may be allowed to operate on tokens without being their owner.\n @param allowance Amount of tokens a `spender` is allowed to operate with.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"fb8f41b2","name":"ERC20InsufficientAllowance","nameLocation":"1516:26:0","parameters":{"id":29,"nodeType":"ParameterList","parameters":[{"constant":false,"id":24,"mutability":"mutable","name":"spender","nameLocation":"1551:7:0","nodeType":"VariableDeclaration","scope":30,"src":"1543:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":23,"name":"address","nodeType":"ElementaryTypeName","src":"1543:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":26,"mutability":"mutable","name":"allowance","nameLocation":"1568:9:0","nodeType":"VariableDeclaration","scope":30,"src":"1560:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":25,"name":"uint256","nodeType":"ElementaryTypeName","src":"1560:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":28,"mutability":"mutable","name":"needed","nameLocation":"1587:6:0","nodeType":"VariableDeclaration","scope":30,"src":"1579:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":27,"name":"uint256","nodeType":"ElementaryTypeName","src":"1579:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1542:52:0"}},{"id":35,"nodeType":"ErrorDefinition","src":"1780:45:0","nodes":[],"documentation":{"id":31,"nodeType":"StructuredDocumentation","src":"1601:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"e602df05","name":"ERC20InvalidApprover","nameLocation":"1786:20:0","parameters":{"id":34,"nodeType":"ParameterList","parameters":[{"constant":false,"id":33,"mutability":"mutable","name":"approver","nameLocation":"1815:8:0","nodeType":"VariableDeclaration","scope":35,"src":"1807:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":32,"name":"address","nodeType":"ElementaryTypeName","src":"1807:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1806:18:0"}},{"id":40,"nodeType":"ErrorDefinition","src":"2031:43:0","nodes":[],"documentation":{"id":36,"nodeType":"StructuredDocumentation","src":"1831:195:0","text":" @dev Indicates a failure with the `spender` to be approved. Used in approvals.\n @param spender Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"94280d62","name":"ERC20InvalidSpender","nameLocation":"2037:19:0","parameters":{"id":39,"nodeType":"ParameterList","parameters":[{"constant":false,"id":38,"mutability":"mutable","name":"spender","nameLocation":"2065:7:0","nodeType":"VariableDeclaration","scope":40,"src":"2057:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":37,"name":"address","nodeType":"ElementaryTypeName","src":"2057:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2056:17:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC20Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":2,"nodeType":"StructuredDocumentation","src":"172:139:0","text":" @dev Standard ERC20 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[41],"name":"IERC20Errors","nameLocation":"322:12:0","scope":2845,"usedErrors":[11,16,21,30,35,40],"usedEvents":[]},{"id":89,"nodeType":"ContractDefinition","src":"2220:2092:0","nodes":[{"id":47,"nodeType":"ErrorDefinition","src":"2474:40:0","nodes":[],"documentation":{"id":43,"nodeType":"StructuredDocumentation","src":"2250:219:0","text":" @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.\n Used in balance queries.\n @param owner Address of the current owner of a token."},"errorSelector":"89c62b64","name":"ERC721InvalidOwner","nameLocation":"2480:18:0","parameters":{"id":46,"nodeType":"ParameterList","parameters":[{"constant":false,"id":45,"mutability":"mutable","name":"owner","nameLocation":"2507:5:0","nodeType":"VariableDeclaration","scope":47,"src":"2499:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":44,"name":"address","nodeType":"ElementaryTypeName","src":"2499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2498:15:0"}},{"id":52,"nodeType":"ErrorDefinition","src":"2657:46:0","nodes":[],"documentation":{"id":48,"nodeType":"StructuredDocumentation","src":"2520:132:0","text":" @dev Indicates a `tokenId` whose `owner` is the zero address.\n @param tokenId Identifier number of a token."},"errorSelector":"7e273289","name":"ERC721NonexistentToken","nameLocation":"2663:22:0","parameters":{"id":51,"nodeType":"ParameterList","parameters":[{"constant":false,"id":50,"mutability":"mutable","name":"tokenId","nameLocation":"2694:7:0","nodeType":"VariableDeclaration","scope":52,"src":"2686:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":49,"name":"uint256","nodeType":"ElementaryTypeName","src":"2686:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"2685:17:0"}},{"id":61,"nodeType":"ErrorDefinition","src":"3003:75:0","nodes":[],"documentation":{"id":53,"nodeType":"StructuredDocumentation","src":"2709:289:0","text":" @dev Indicates an error related to the ownership over a particular token. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param tokenId Identifier number of a token.\n @param owner Address of the current owner of a token."},"errorSelector":"64283d7b","name":"ERC721IncorrectOwner","nameLocation":"3009:20:0","parameters":{"id":60,"nodeType":"ParameterList","parameters":[{"constant":false,"id":55,"mutability":"mutable","name":"sender","nameLocation":"3038:6:0","nodeType":"VariableDeclaration","scope":61,"src":"3030:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":54,"name":"address","nodeType":"ElementaryTypeName","src":"3030:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":57,"mutability":"mutable","name":"tokenId","nameLocation":"3054:7:0","nodeType":"VariableDeclaration","scope":61,"src":"3046:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":56,"name":"uint256","nodeType":"ElementaryTypeName","src":"3046:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":59,"mutability":"mutable","name":"owner","nameLocation":"3071:5:0","nodeType":"VariableDeclaration","scope":61,"src":"3063:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":58,"name":"address","nodeType":"ElementaryTypeName","src":"3063:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3029:48:0"}},{"id":66,"nodeType":"ErrorDefinition","src":"3241:42:0","nodes":[],"documentation":{"id":62,"nodeType":"StructuredDocumentation","src":"3084:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"73c6ac6e","name":"ERC721InvalidSender","nameLocation":"3247:19:0","parameters":{"id":65,"nodeType":"ParameterList","parameters":[{"constant":false,"id":64,"mutability":"mutable","name":"sender","nameLocation":"3275:6:0","nodeType":"VariableDeclaration","scope":66,"src":"3267:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":63,"name":"address","nodeType":"ElementaryTypeName","src":"3267:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3266:16:0"}},{"id":71,"nodeType":"ErrorDefinition","src":"3453:46:0","nodes":[],"documentation":{"id":67,"nodeType":"StructuredDocumentation","src":"3289:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"64a0ae92","name":"ERC721InvalidReceiver","nameLocation":"3459:21:0","parameters":{"id":70,"nodeType":"ParameterList","parameters":[{"constant":false,"id":69,"mutability":"mutable","name":"receiver","nameLocation":"3489:8:0","nodeType":"VariableDeclaration","scope":71,"src":"3481:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":68,"name":"address","nodeType":"ElementaryTypeName","src":"3481:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3480:18:0"}},{"id":78,"nodeType":"ErrorDefinition","src":"3757:68:0","nodes":[],"documentation":{"id":72,"nodeType":"StructuredDocumentation","src":"3505:247:0","text":" @dev Indicates a failure with the `operator`’s approval. Used in transfers.\n @param operator Address that may be allowed to operate on tokens without being their owner.\n @param tokenId Identifier number of a token."},"errorSelector":"177e802f","name":"ERC721InsufficientApproval","nameLocation":"3763:26:0","parameters":{"id":77,"nodeType":"ParameterList","parameters":[{"constant":false,"id":74,"mutability":"mutable","name":"operator","nameLocation":"3798:8:0","nodeType":"VariableDeclaration","scope":78,"src":"3790:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":73,"name":"address","nodeType":"ElementaryTypeName","src":"3790:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":76,"mutability":"mutable","name":"tokenId","nameLocation":"3816:7:0","nodeType":"VariableDeclaration","scope":78,"src":"3808:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":75,"name":"uint256","nodeType":"ElementaryTypeName","src":"3808:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"3789:35:0"}},{"id":83,"nodeType":"ErrorDefinition","src":"4010:46:0","nodes":[],"documentation":{"id":79,"nodeType":"StructuredDocumentation","src":"3831:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"a9fbf51f","name":"ERC721InvalidApprover","nameLocation":"4016:21:0","parameters":{"id":82,"nodeType":"ParameterList","parameters":[{"constant":false,"id":81,"mutability":"mutable","name":"approver","nameLocation":"4046:8:0","nodeType":"VariableDeclaration","scope":83,"src":"4038:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":80,"name":"address","nodeType":"ElementaryTypeName","src":"4038:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"4037:18:0"}},{"id":88,"nodeType":"ErrorDefinition","src":"4264:46:0","nodes":[],"documentation":{"id":84,"nodeType":"StructuredDocumentation","src":"4062:197:0","text":" @dev Indicates a failure with the `operator` to be approved. Used in approvals.\n @param operator Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"5b08ba18","name":"ERC721InvalidOperator","nameLocation":"4270:21:0","parameters":{"id":87,"nodeType":"ParameterList","parameters":[{"constant":false,"id":86,"mutability":"mutable","name":"operator","nameLocation":"4300:8:0","nodeType":"VariableDeclaration","scope":88,"src":"4292:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":85,"name":"address","nodeType":"ElementaryTypeName","src":"4292:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"4291:18:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC721Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":42,"nodeType":"StructuredDocumentation","src":"2078:141:0","text":" @dev Standard ERC721 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[89],"name":"IERC721Errors","nameLocation":"2230:13:0","scope":2845,"usedErrors":[47,52,61,66,71,78,83,88],"usedEvents":[]},{"id":136,"nodeType":"ContractDefinition","src":"4458:2107:0","nodes":[{"id":101,"nodeType":"ErrorDefinition","src":"4855:99:0","nodes":[],"documentation":{"id":91,"nodeType":"StructuredDocumentation","src":"4489:361:0","text":" @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param balance Current balance for the interacting account.\n @param needed Minimum amount required to perform a transfer.\n @param tokenId Identifier number of a token."},"errorSelector":"03dee4c5","name":"ERC1155InsufficientBalance","nameLocation":"4861:26:0","parameters":{"id":100,"nodeType":"ParameterList","parameters":[{"constant":false,"id":93,"mutability":"mutable","name":"sender","nameLocation":"4896:6:0","nodeType":"VariableDeclaration","scope":101,"src":"4888:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":92,"name":"address","nodeType":"ElementaryTypeName","src":"4888:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":95,"mutability":"mutable","name":"balance","nameLocation":"4912:7:0","nodeType":"VariableDeclaration","scope":101,"src":"4904:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":94,"name":"uint256","nodeType":"ElementaryTypeName","src":"4904:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":97,"mutability":"mutable","name":"needed","nameLocation":"4929:6:0","nodeType":"VariableDeclaration","scope":101,"src":"4921:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":96,"name":"uint256","nodeType":"ElementaryTypeName","src":"4921:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":99,"mutability":"mutable","name":"tokenId","nameLocation":"4945:7:0","nodeType":"VariableDeclaration","scope":101,"src":"4937:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":98,"name":"uint256","nodeType":"ElementaryTypeName","src":"4937:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"4887:66:0"}},{"id":106,"nodeType":"ErrorDefinition","src":"5117:43:0","nodes":[],"documentation":{"id":102,"nodeType":"StructuredDocumentation","src":"4960:152:0","text":" @dev Indicates a failure with the token `sender`. 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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/MNISTNFT.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/MNISTNFT.json
new file mode 100644
index 0000000..4d0fed2
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/MNISTNFT.json
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e\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"getBalance\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"sendTo\",\"type\":\"address\"}],\"name\":\"mint\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"onERC721Received\",\"outputs\":[{\"internalType\":\"bytes4\",\"name\":\"\",\"type\":\"bytes4\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"tokenExists\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"}],\"devdoc\":{\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. Used in transfers.\",\"params\":{\"owner\":\"Address of the current owner of a token.\",\"sender\":\"Address whose tokens are being transferred.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InsufficientApproval(address,uint256)\":[{\"details\":\"Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC721InvalidOperator(address)\":[{\"details\":\"Indicates a failure with the `operator` to be approved. Used in approvals.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC721InvalidOwner(address)\":[{\"details\":\"Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. Used in balance queries.\",\"params\":{\"owner\":\"Address of the current owner of a token.\"}}],\"ERC721InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC721InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC721NonexistentToken(uint256)\":[{\"details\":\"Indicates a `tokenId` whose `owner` is the zero address.\",\"params\":{\"tokenId\":\"Identifier number of a token.\"}}]},\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See {IERC721-isApprovedForAll}.\"},\"name()\":{\"details\":\"See {IERC721Metadata-name}.\"},\"onERC721Received(address,address,uint256,bytes)\":{\"details\":\"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\"},\"ownerOf(uint256)\":{\"details\":\"See {IERC721-ownerOf}.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"See {IERC721-setApprovalForAll}.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"},\"symbol()\":{\"details\":\"See {IERC721Metadata-symbol}.\"},\"tokenURI(uint256)\":{\"details\":\"See {IERC721Metadata-tokenURI}.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See 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tputs":[{"internalType":"address","name":"","type":"address"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"stateMutability":"nonpayable","type":"function","name":"setApprovalForAll"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function","name":"tokenExists","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"transferFrom"},{"inputs":[],"stateMutability":"payable","type":"receive"}],"devdoc":{"kind":"dev","methods":{"approve(address,uint256)":{"details":"See 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It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`."},"ownerOf(uint256)":{"details":"See {IERC721-ownerOf}."},"safeTransferFrom(address,address,uint256)":{"details":"See {IERC721-safeTransferFrom}."},"safeTransferFrom(address,address,uint256,bytes)":{"details":"See {IERC721-safeTransferFrom}."},"setApprovalForAll(address,bool)":{"details":"See {IERC721-setApprovalForAll}."},"supportsInterface(bytes4)":{"details":"See {IERC165-supportsInterface}."},"symbol()":{"details":"See {IERC721Metadata-symbol}."},"tokenURI(uint256)":{"details":"See {IERC721Metadata-tokenURI}."},"transferFrom(address,address,uint256)":{"details":"See {IERC721-transferFrom}."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"src/MNISTNFT_Flattened.sol":"MNISTNFT"},"evmVersion":"paris","libraries":{}},"sources":{"src/MNISTNFT_Flattened.sol":{"keccak256":"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4","urls":["bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891","dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif"],"license":null}},"version":1},"ast":{"absolutePath":"src/MNISTNFT_Flattened.sol","id":2845,"exportedSymbols":{"Context":[1572],"ERC165":[1621],"ERC721":[2753],"IERC1155Errors":[136],"IERC165":[1600],"IERC20Errors":[41],"IERC721":[1735],"IERC721Errors":[89],"IERC721Metadata":[1760],"IERC721Receiver":[1589],"MNISTNFT":[2844],"Math":[1293],"SignedMath":[240],"Strings":[1543]},"nodeType":"SourceUnit","src":"146:53875:0","nodes":[{"id":1,"nodeType":"PragmaDirective","src":"146:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":41,"nodeType":"ContractDefinition","src":"312:1764:0","nodes":[{"id":11,"nodeType":"ErrorDefinition","src":"655:80:0","nodes":[],"documentation":{"id":3,"nodeType":"StructuredDocumentation","src":"341:309:0","text":" @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param balance Current balance for the interacting account.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"e450d38c","name":"ERC20InsufficientBalance","nameLocation":"661:24:0","parameters":{"id":10,"nodeType":"ParameterList","parameters":[{"constant":false,"id":5,"mutability":"mutable","name":"sender","nameLocation":"694:6:0","nodeType":"VariableDeclaration","scope":11,"src":"686:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":4,"name":"address","nodeType":"ElementaryTypeName","src":"686:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":7,"mutability":"mutable","name":"balance","nameLocation":"710:7:0","nodeType":"VariableDeclaration","scope":11,"src":"702:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":6,"name":"uint256","nodeType":"ElementaryTypeName","src":"702:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":9,"mutability":"mutable","name":"needed","nameLocation":"727:6:0","nodeType":"VariableDeclaration","scope":11,"src":"719:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":8,"name":"uint256","nodeType":"ElementaryTypeName","src":"719:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"685:49:0"}},{"id":16,"nodeType":"ErrorDefinition","src":"898:41:0","nodes":[],"documentation":{"id":12,"nodeType":"StructuredDocumentation","src":"741:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"96c6fd1e","name":"ERC20InvalidSender","nameLocation":"904:18:0","parameters":{"id":15,"nodeType":"ParameterList","parameters":[{"constant":false,"id":14,"mutability":"mutable","name":"sender","nameLocation":"931:6:0","nodeType":"VariableDeclaration","scope":16,"src":"923:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":13,"name":"address","nodeType":"ElementaryTypeName","src":"923:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"922:16:0"}},{"id":21,"nodeType":"ErrorDefinition","src":"1109:45:0","nodes":[],"documentation":{"id":17,"nodeType":"StructuredDocumentation","src":"945:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"ec442f05","name":"ERC20InvalidReceiver","nameLocation":"1115:20:0","parameters":{"id":20,"nodeType":"ParameterList","parameters":[{"constant":false,"id":19,"mutability":"mutable","name":"receiver","nameLocation":"1144:8:0","nodeType":"VariableDeclaration","scope":21,"src":"1136:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":18,"name":"address","nodeType":"ElementaryTypeName","src":"1136:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1135:18:0"}},{"id":30,"nodeType":"ErrorDefinition","src":"1510:85:0","nodes":[],"documentation":{"id":22,"nodeType":"StructuredDocumentation","src":"1160:345:0","text":" @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.\n @param spender Address that may be allowed to operate on tokens without being their owner.\n @param allowance Amount of tokens a `spender` is allowed to operate with.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"fb8f41b2","name":"ERC20InsufficientAllowance","nameLocation":"1516:26:0","parameters":{"id":29,"nodeType":"ParameterList","parameters":[{"constant":false,"id":24,"mutability":"mutable","name":"spender","nameLocation":"1551:7:0","nodeType":"VariableDeclaration","scope":30,"src":"1543:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":23,"name":"address","nodeType":"ElementaryTypeName","src":"1543:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":26,"mutability":"mutable","name":"allowance","nameLocation":"1568:9:0","nodeType":"VariableDeclaration","scope":30,"src":"1560:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":25,"name":"uint256","nodeType":"ElementaryTypeName","src":"1560:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":28,"mutability":"mutable","name":"needed","nameLocation":"1587:6:0","nodeType":"VariableDeclaration","scope":30,"src":"1579:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":27,"name":"uint256","nodeType":"ElementaryTypeName","src":"1579:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1542:52:0"}},{"id":35,"nodeType":"ErrorDefinition","src":"1780:45:0","nodes":[],"documentation":{"id":31,"nodeType":"StructuredDocumentation","src":"1601:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"e602df05","name":"ERC20InvalidApprover","nameLocation":"1786:20:0","parameters":{"id":34,"nodeType":"ParameterList","parameters":[{"constant":false,"id":33,"mutability":"mutable","name":"approver","nameLocation":"1815:8:0","nodeType":"VariableDeclaration","scope":35,"src":"1807:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":32,"name":"address","nodeType":"ElementaryTypeName","src":"1807:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1806:18:0"}},{"id":40,"nodeType":"ErrorDefinition","src":"2031:43:0","nodes":[],"documentation":{"id":36,"nodeType":"StructuredDocumentation","src":"1831:195:0","text":" @dev Indicates a failure with the `spender` to be approved. Used in approvals.\n @param spender Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"94280d62","name":"ERC20InvalidSpender","nameLocation":"2037:19:0","parameters":{"id":39,"nodeType":"ParameterList","parameters":[{"constant":false,"id":38,"mutability":"mutable","name":"spender","nameLocation":"2065:7:0","nodeType":"VariableDeclaration","scope":40,"src":"2057:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":37,"name":"address","nodeType":"ElementaryTypeName","src":"2057:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2056:17:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC20Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":2,"nodeType":"StructuredDocumentation","src":"172:139:0","text":" @dev Standard ERC20 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[41],"name":"IERC20Errors","nameLocation":"322:12:0","scope":2845,"usedErrors":[11,16,21,30,35,40],"usedEvents":[]},{"id":89,"nodeType":"ContractDefinition","src":"2220:2092:0","nodes":[{"id":47,"nodeType":"ErrorDefinition","src":"2474:40:0","nodes":[],"documentation":{"id":43,"nodeType":"StructuredDocumentation","src":"2250:219:0","text":" @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.\n Used in balance queries.\n @param owner Address of the current owner of a token."},"errorSelector":"89c62b64","name":"ERC721InvalidOwner","nameLocation":"2480:18:0","parameters":{"id":46,"nodeType":"ParameterList","parameters":[{"constant":false,"id":45,"mutability":"mutable","name":"owner","nameLocation":"2507:5:0","nodeType":"VariableDeclaration","scope":47,"src":"2499:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":44,"name":"address","nodeType":"ElementaryTypeName","src":"2499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2498:15:0"}},{"id":52,"nodeType":"ErrorDefinition","src":"2657:46:0","nodes":[],"documentation":{"id":48,"nodeType":"StructuredDocumentation","src":"2520:132:0","text":" @dev Indicates a `tokenId` whose `owner` is the zero address.\n @param tokenId Identifier number of a token."},"errorSelector":"7e273289","name":"ERC721NonexistentToken","nameLocation":"2663:22:0","parameters":{"id":51,"nodeType":"ParameterList","parameters":[{"constant":false,"id":50,"mutability":"mutable","name":"tokenId","nameLocation":"2694:7:0","nodeType":"VariableDeclaration","scope":52,"src":"2686:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":49,"name":"uint256","nodeType":"ElementaryTypeName","src":"2686:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"2685:17:0"}},{"id":61,"nodeType":"ErrorDefinition","src":"3003:75:0","nodes":[],"documentation":{"id":53,"nodeType":"StructuredDocumentation","src":"2709:289:0","text":" @dev Indicates an error related to the ownership over a particular token. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param tokenId Identifier number of a token.\n @param owner Address of the current owner of a token."},"errorSelector":"64283d7b","name":"ERC721IncorrectOwner","nameLocation":"3009:20:0","parameters":{"id":60,"nodeType":"ParameterList","parameters":[{"constant":false,"id":55,"mutability":"mutable","name":"sender","nameLocation":"3038:6:0","nodeType":"VariableDeclaration","scope":61,"src":"3030:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":54,"name":"address","nodeType":"ElementaryTypeName","src":"3030:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":57,"mutability":"mutable","name":"tokenId","nameLocation":"3054:7:0","nodeType":"VariableDeclaration","scope":61,"src":"3046:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":56,"name":"uint256","nodeType":"ElementaryTypeName","src":"3046:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":59,"mutability":"mutable","name":"owner","nameLocation":"3071:5:0","nodeType":"VariableDeclaration","scope":61,"src":"3063:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":58,"name":"address","nodeType":"ElementaryTypeName","src":"3063:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3029:48:0"}},{"id":66,"nodeType":"ErrorDefinition","src":"3241:42:0","nodes":[],"documentation":{"id":62,"nodeType":"StructuredDocumentation","src":"3084:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"73c6ac6e","name":"ERC721InvalidSender","nameLocation":"3247:19:0","parameters":{"id":65,"nodeType":"ParameterList","parameters":[{"constant":false,"id":64,"mutability":"mutable","name":"sender","nameLocation":"3275:6:0","nodeType":"VariableDeclaration","scope":66,"src":"3267:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":63,"name":"address","nodeType":"ElementaryTypeName","src":"3267:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3266:16:0"}},{"id":71,"nodeType":"ErrorDefinition","src":"3453:46:0","nodes":[],"documentation":{"id":67,"nodeType":"StructuredDocumentation","src":"3289:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"64a0ae92","name":"ERC721InvalidReceiver","nameLocation":"3459:21:0","parameters":{"id":70,"nodeType":"ParameterList","parameters":[{"constant":false,"id":69,"mutability":"mutable","name":"receiver","nameLocation":"3489:8:0","nodeType":"VariableDeclaration","scope":71,"src":"3481:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":68,"name":"address","nodeType":"ElementaryTypeName","src":"3481:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3480:18:0"}},{"id":78,"nodeType":"ErrorDefinition","src":"3757:68:0","nodes":[],"documentation":{"id":72,"nodeType":"StructuredDocumentation","src":"3505:247:0","text":" @dev Indicates a failure with the `operator`’s approval. 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@title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Math.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Math.json
new file mode 100644
index 0000000..b90ebf7
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Math.json
@@ -0,0 +1 @@
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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/SignedMath.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/SignedMath.json
new file mode 100644
index 0000000..b710972
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/SignedMath.json
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@title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Strings.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Strings.json
new file mode 100644
index 0000000..7a54d18
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Strings.json
@@ -0,0 +1 @@
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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/Math.sol/Math.json b/examples/on-chain_mnist/contracts/out/Math.sol/Math.json
index a3b2577..4e1d4bc 100644
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diff --git a/examples/on-chain_mnist/contracts/out/SignedMath.sol/SignedMath.json b/examples/on-chain_mnist/contracts/out/SignedMath.sol/SignedMath.json
index daf03b1..8af103c 100644
--- a/examples/on-chain_mnist/contracts/out/SignedMath.sol/SignedMath.json
+++ b/examples/on-chain_mnist/contracts/out/SignedMath.sol/SignedMath.json
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diff --git a/examples/on-chain_mnist/contracts/out/Strings.sol/Strings.json b/examples/on-chain_mnist/contracts/out/Strings.sol/Strings.json
index 427f4ff..9d1c462 100644
--- a/examples/on-chain_mnist/contracts/out/Strings.sol/Strings.json
+++ b/examples/on-chain_mnist/contracts/out/Strings.sol/Strings.json
@@ -1 +1 @@
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diff --git a/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC1155Errors.json b/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC1155Errors.json
index a3b9d93..1cbbc92 100644
--- a/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC1155Errors.json
+++ b/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC1155Errors.json
@@ -1 +1 @@
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Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"57f447ce","name":"ERC1155InvalidReceiver","nameLocation":"5302:22:0","parameters":{"id":110,"nodeType":"ParameterList","parameters":[{"constant":false,"id":109,"mutability":"mutable","name":"receiver","nameLocation":"5333:8:0","nodeType":"VariableDeclaration","scope":111,"src":"5325:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":108,"name":"address","nodeType":"ElementaryTypeName","src":"5325:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5324:18:0"}},{"id":118,"nodeType":"ErrorDefinition","src":"5610:68:0","nodes":[],"documentation":{"id":112,"nodeType":"StructuredDocumentation","src":"5349:256:0","text":" @dev Indicates a failure with the `operator`’s approval. Used in transfers.\n @param operator Address that may be allowed to operate on tokens without being their owner.\n @param owner Address of the current owner of a token."},"errorSelector":"e237d922","name":"ERC1155MissingApprovalForAll","nameLocation":"5616:28:0","parameters":{"id":117,"nodeType":"ParameterList","parameters":[{"constant":false,"id":114,"mutability":"mutable","name":"operator","nameLocation":"5653:8:0","nodeType":"VariableDeclaration","scope":118,"src":"5645:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":113,"name":"address","nodeType":"ElementaryTypeName","src":"5645:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":116,"mutability":"mutable","name":"owner","nameLocation":"5671:5:0","nodeType":"VariableDeclaration","scope":118,"src":"5663:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":115,"name":"address","nodeType":"ElementaryTypeName","src":"5663:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5644:33:0"}},{"id":123,"nodeType":"ErrorDefinition","src":"5863:47:0","nodes":[],"documentation":{"id":119,"nodeType":"StructuredDocumentation","src":"5684:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"3e31884e","name":"ERC1155InvalidApprover","nameLocation":"5869:22:0","parameters":{"id":122,"nodeType":"ParameterList","parameters":[{"constant":false,"id":121,"mutability":"mutable","name":"approver","nameLocation":"5900:8:0","nodeType":"VariableDeclaration","scope":123,"src":"5892:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":120,"name":"address","nodeType":"ElementaryTypeName","src":"5892:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5891:18:0"}},{"id":128,"nodeType":"ErrorDefinition","src":"6118:47:0","nodes":[],"documentation":{"id":124,"nodeType":"StructuredDocumentation","src":"5916:197:0","text":" @dev Indicates a failure with the `operator` to be approved. Used in approvals.\n @param operator Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"ced3e100","name":"ERC1155InvalidOperator","nameLocation":"6124:22:0","parameters":{"id":127,"nodeType":"ParameterList","parameters":[{"constant":false,"id":126,"mutability":"mutable","name":"operator","nameLocation":"6155:8:0","nodeType":"VariableDeclaration","scope":128,"src":"6147:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":125,"name":"address","nodeType":"ElementaryTypeName","src":"6147:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"6146:18:0"}},{"id":135,"nodeType":"ErrorDefinition","src":"6456:73:0","nodes":[],"documentation":{"id":129,"nodeType":"StructuredDocumentation","src":"6171:280:0","text":" @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.\n Used in batch transfers.\n @param idsLength Length of the array of token identifiers\n @param valuesLength Length of the array of token amounts"},"errorSelector":"5b059991","name":"ERC1155InvalidArrayLength","nameLocation":"6462:25:0","parameters":{"id":134,"nodeType":"ParameterList","parameters":[{"constant":false,"id":131,"mutability":"mutable","name":"idsLength","nameLocation":"6496:9:0","nodeType":"VariableDeclaration","scope":135,"src":"6488:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":130,"name":"uint256","nodeType":"ElementaryTypeName","src":"6488:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":133,"mutability":"mutable","name":"valuesLength","nameLocation":"6515:12:0","nodeType":"VariableDeclaration","scope":135,"src":"6507:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":132,"name":"uint256","nodeType":"ElementaryTypeName","src":"6507:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"6487:41:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC1155Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":90,"nodeType":"StructuredDocumentation","src":"4280:143:0","text":" @dev Standard ERC1155 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[136],"name":"IERC1155Errors","nameLocation":"4434:14:0","scope":137,"usedErrors":[101,106,111,118,123,128,135],"usedEvents":[]}],"license":"MIT"},"id":0}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC20Errors.json b/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC20Errors.json
index 86595af..976f69a 100644
--- a/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC20Errors.json
+++ b/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC20Errors.json
@@ -1 +1 @@
-{"abi":[{"type":"error","name":"ERC20InsufficientAllowance","inputs":[{"name":"spender","type":"address","internalType":"address"},{"name":"allowance","type":"uint256","internalType":"uint256"},{"name":"needed","type":"uint256","internalType":"uint256"}]},{"type":"error","name":"ERC20InsufficientBalance","inputs":[{"name":"sender","type":"address","internalType":"address"},{"name":"balance","type":"uint256","internalType":"uint256"},{"name":"needed","type":"uint256","internalType":"uint256"}]},{"type":"error","name":"ERC20InvalidApprover","inputs":[{"name":"approver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC20InvalidReceiver","inputs":[{"name":"receiver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC20InvalidSender","inputs":[{"name":"sender","type":"address","internalType":"address"}]},{"type":"error","name":"ERC20InvalidSpender","inputs":[{"name":"spender","type":"address","internalType":"address"}]}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.23+commit.f704f362\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"allowance\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"needed\",\"type\":\"uint256\"}],\"name\":\"ERC20InsufficientAllowance\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"balance\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"needed\",\"type\":\"uint256\"}],\"name\":\"ERC20InsufficientBalance\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"approver\",\"type\":\"address\"}],\"name\":\"ERC20InvalidApprover\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"receiver\",\"type\":\"address\"}],\"name\":\"ERC20InvalidReceiver\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"ERC20InvalidSender\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"ERC20InvalidSpender\",\"type\":\"error\"}],\"devdoc\":{\"details\":\"Standard ERC20 Errors Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.\",\"errors\":{\"ERC20InsufficientAllowance(address,uint256,uint256)\":[{\"details\":\"Indicates a failure with the `spender`\\u2019s `allowance`. Used in transfers.\",\"params\":{\"allowance\":\"Amount of tokens a `spender` is allowed to operate with.\",\"needed\":\"Minimum amount required to perform a transfer.\",\"spender\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC20InsufficientBalance(address,uint256,uint256)\":[{\"details\":\"Indicates an error related to the current `balance` of a `sender`. Used in transfers.\",\"params\":{\"balance\":\"Current balance for the interacting account.\",\"needed\":\"Minimum amount required to perform a transfer.\",\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC20InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC20InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. 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Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"96c6fd1e","name":"ERC20InvalidSender","nameLocation":"870:18:0","parameters":{"id":15,"nodeType":"ParameterList","parameters":[{"constant":false,"id":14,"mutability":"mutable","name":"sender","nameLocation":"897:6:0","nodeType":"VariableDeclaration","scope":16,"src":"889:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":13,"name":"address","nodeType":"ElementaryTypeName","src":"889:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"888:16:0"}},{"id":21,"nodeType":"ErrorDefinition","src":"1075:45:0","nodes":[],"documentation":{"id":17,"nodeType":"StructuredDocumentation","src":"911:159:0","text":" @dev Indicates a failure with the token `receiver`. 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Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"57f447ce","name":"ERC1155InvalidReceiver","nameLocation":"5302:22:0","parameters":{"id":110,"nodeType":"ParameterList","parameters":[{"constant":false,"id":109,"mutability":"mutable","name":"receiver","nameLocation":"5333:8:0","nodeType":"VariableDeclaration","scope":111,"src":"5325:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":108,"name":"address","nodeType":"ElementaryTypeName","src":"5325:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5324:18:0"}},{"id":118,"nodeType":"ErrorDefinition","src":"5610:68:0","nodes":[],"documentation":{"id":112,"nodeType":"StructuredDocumentation","src":"5349:256:0","text":" @dev Indicates a failure with the `operator`’s approval. Used in transfers.\n @param operator Address that may be allowed to operate on tokens without being their owner.\n @param owner Address of the current owner of a token."},"errorSelector":"e237d922","name":"ERC1155MissingApprovalForAll","nameLocation":"5616:28:0","parameters":{"id":117,"nodeType":"ParameterList","parameters":[{"constant":false,"id":114,"mutability":"mutable","name":"operator","nameLocation":"5653:8:0","nodeType":"VariableDeclaration","scope":118,"src":"5645:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":113,"name":"address","nodeType":"ElementaryTypeName","src":"5645:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":116,"mutability":"mutable","name":"owner","nameLocation":"5671:5:0","nodeType":"VariableDeclaration","scope":118,"src":"5663:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":115,"name":"address","nodeType":"ElementaryTypeName","src":"5663:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5644:33:0"}},{"id":123,"nodeType":"ErrorDefinition","src":"5863:47:0","nodes":[],"documentation":{"id":119,"nodeType":"StructuredDocumentation","src":"5684:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"3e31884e","name":"ERC1155InvalidApprover","nameLocation":"5869:22:0","parameters":{"id":122,"nodeType":"ParameterList","parameters":[{"constant":false,"id":121,"mutability":"mutable","name":"approver","nameLocation":"5900:8:0","nodeType":"VariableDeclaration","scope":123,"src":"5892:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":120,"name":"address","nodeType":"ElementaryTypeName","src":"5892:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5891:18:0"}},{"id":128,"nodeType":"ErrorDefinition","src":"6118:47:0","nodes":[],"documentation":{"id":124,"nodeType":"StructuredDocumentation","src":"5916:197:0","text":" @dev Indicates a failure with the `operator` to be approved. Used in approvals.\n @param operator Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"ced3e100","name":"ERC1155InvalidOperator","nameLocation":"6124:22:0","parameters":{"id":127,"nodeType":"ParameterList","parameters":[{"constant":false,"id":126,"mutability":"mutable","name":"operator","nameLocation":"6155:8:0","nodeType":"VariableDeclaration","scope":128,"src":"6147:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":125,"name":"address","nodeType":"ElementaryTypeName","src":"6147:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"6146:18:0"}},{"id":135,"nodeType":"ErrorDefinition","src":"6456:73:0","nodes":[],"documentation":{"id":129,"nodeType":"StructuredDocumentation","src":"6171:280:0","text":" @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.\n Used in batch transfers.\n @param idsLength Length of the array of token identifiers\n @param valuesLength Length of the array of token amounts"},"errorSelector":"5b059991","name":"ERC1155InvalidArrayLength","nameLocation":"6462:25:0","parameters":{"id":134,"nodeType":"ParameterList","parameters":[{"constant":false,"id":131,"mutability":"mutable","name":"idsLength","nameLocation":"6496:9:0","nodeType":"VariableDeclaration","scope":135,"src":"6488:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":130,"name":"uint256","nodeType":"ElementaryTypeName","src":"6488:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":133,"mutability":"mutable","name":"valuesLength","nameLocation":"6515:12:0","nodeType":"VariableDeclaration","scope":135,"src":"6507:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":132,"name":"uint256","nodeType":"ElementaryTypeName","src":"6507:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"6487:41:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC1155Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":90,"nodeType":"StructuredDocumentation","src":"4280:143:0","text":" @dev Standard ERC1155 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[136],"name":"IERC1155Errors","nameLocation":"4434:14:0","scope":137,"usedErrors":[101,106,111,118,123,128,135],"usedEvents":[]}],"license":"MIT"},"id":0}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC721Errors.json b/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC721Errors.json
index 3f32f14..8e04809 100644
--- a/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC721Errors.json
+++ b/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC721Errors.json
@@ -1 +1 @@
-{"abi":[{"type":"error","name":"ERC721IncorrectOwner","inputs":[{"name":"sender","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InsufficientApproval","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}]},{"type":"error","name":"ERC721InvalidApprover","inputs":[{"name":"approver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOperator","inputs":[{"name":"operator","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOwner","inputs":[{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidReceiver","inputs":[{"name":"receiver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidSender","inputs":[{"name":"sender","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721NonexistentToken","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}]}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.23+commit.f704f362\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"ERC721IncorrectOwner\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ERC721InsufficientApproval\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"approver\",\"type\":\"address\"}],\"name\":\"ERC721InvalidApprover\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"ERC721InvalidOperator\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"ERC721InvalidOwner\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"receiver\",\"type\":\"address\"}],\"name\":\"ERC721InvalidReceiver\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"ERC721InvalidSender\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ERC721NonexistentToken\",\"type\":\"error\"}],\"devdoc\":{\"details\":\"Standard ERC721 Errors Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.\",\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. Used in transfers.\",\"params\":{\"owner\":\"Address of the current owner of a token.\",\"sender\":\"Address whose tokens are being transferred.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InsufficientApproval(address,uint256)\":[{\"details\":\"Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC721InvalidOperator(address)\":[{\"details\":\"Indicates a failure with the `operator` to be approved. Used in approvals.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC721InvalidOwner(address)\":[{\"details\":\"Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. Used in balance queries.\",\"params\":{\"owner\":\"Address of the current owner of a token.\"}}],\"ERC721InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC721InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC721NonexistentToken(uint256)\":[{\"details\":\"Indicates a `tokenId` whose `owner` is the zero address.\",\"params\":{\"tokenId\":\"Identifier number of a token.\"}}]},\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"lib/openzeppelin-contracts/contracts/interfaces/draft-IERC6093.sol\":\"IERC721Errors\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"lib/openzeppelin-contracts/contracts/interfaces/draft-IERC6093.sol\":{\"keccak256\":\"0x60c65f701957fdd6faea1acb0bb45825791d473693ed9ecb34726fdfaa849dd7\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://ea290300e0efc4d901244949dc4d877fd46e6c5e43dc2b26620e8efab3ab803f\",\"dweb:/ipfs/QmcLLJppxKeJWqHxE2CUkcfhuRTgHSn8J4kijcLa5MYhSt\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.23+commit.f704f362"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"address","name":"owner","type":"address"}],"type":"error","name":"ERC721IncorrectOwner"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"type":"error","name":"ERC721InsufficientApproval"},{"inputs":[{"internalType":"address","name":"approver","type":"address"}],"type":"error","name":"ERC721InvalidApprover"},{"inputs":[{"internalType":"address","name":"operator","type":"address"}],"type":"error","name":"ERC721InvalidOperator"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"type":"error","name":"ERC721InvalidOwner"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"type":"error","name":"ERC721InvalidReceiver"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"type":"error","name":"ERC721InvalidSender"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"type":"error","name":"ERC721NonexistentToken"}],"devdoc":{"kind":"dev","methods":{},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"lib/openzeppelin-contracts/contracts/interfaces/draft-IERC6093.sol":"IERC721Errors"},"libraries":{}},"sources":{"lib/openzeppelin-contracts/contracts/interfaces/draft-IERC6093.sol":{"keccak256":"0x60c65f701957fdd6faea1acb0bb45825791d473693ed9ecb34726fdfaa849dd7","urls":["bzz-raw://ea290300e0efc4d901244949dc4d877fd46e6c5e43dc2b26620e8efab3ab803f","dweb:/ipfs/QmcLLJppxKeJWqHxE2CUkcfhuRTgHSn8J4kijcLa5MYhSt"],"license":"MIT"}},"version":1},"ast":{"absolutePath":"lib/openzeppelin-contracts/contracts/interfaces/draft-IERC6093.sol","id":137,"exportedSymbols":{"IERC1155Errors":[136],"IERC20Errors":[41],"IERC721Errors":[89]},"nodeType":"SourceUnit","src":"112:6420:0","nodes":[{"id":1,"nodeType":"PragmaDirective","src":"112:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":41,"nodeType":"ContractDefinition","src":"278:1764:0","nodes":[{"id":11,"nodeType":"ErrorDefinition","src":"621:80:0","nodes":[],"documentation":{"id":3,"nodeType":"StructuredDocumentation","src":"307:309:0","text":" @dev Indicates an error related to the current `balance` of a `sender`. 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Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"96c6fd1e","name":"ERC20InvalidSender","nameLocation":"870:18:0","parameters":{"id":15,"nodeType":"ParameterList","parameters":[{"constant":false,"id":14,"mutability":"mutable","name":"sender","nameLocation":"897:6:0","nodeType":"VariableDeclaration","scope":16,"src":"889:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":13,"name":"address","nodeType":"ElementaryTypeName","src":"889:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"888:16:0"}},{"id":21,"nodeType":"ErrorDefinition","src":"1075:45:0","nodes":[],"documentation":{"id":17,"nodeType":"StructuredDocumentation","src":"911:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"ec442f05","name":"ERC20InvalidReceiver","nameLocation":"1081:20:0","parameters":{"id":20,"nodeType":"ParameterList","parameters":[{"constant":false,"id":19,"mutability":"mutable","name":"receiver","nameLocation":"1110:8:0","nodeType":"VariableDeclaration","scope":21,"src":"1102:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":18,"name":"address","nodeType":"ElementaryTypeName","src":"1102:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1101:18:0"}},{"id":30,"nodeType":"ErrorDefinition","src":"1476:85:0","nodes":[],"documentation":{"id":22,"nodeType":"StructuredDocumentation","src":"1126:345:0","text":" @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.\n @param spender Address that may be allowed to operate on tokens without being their owner.\n @param allowance Amount of tokens a `spender` is allowed to operate with.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"fb8f41b2","name":"ERC20InsufficientAllowance","nameLocation":"1482:26:0","parameters":{"id":29,"nodeType":"ParameterList","parameters":[{"constant":false,"id":24,"mutability":"mutable","name":"spender","nameLocation":"1517:7:0","nodeType":"VariableDeclaration","scope":30,"src":"1509:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":23,"name":"address","nodeType":"ElementaryTypeName","src":"1509:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":26,"mutability":"mutable","name":"allowance","nameLocation":"1534:9:0","nodeType":"VariableDeclaration","scope":30,"src":"1526:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":25,"name":"uint256","nodeType":"ElementaryTypeName","src":"1526:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":28,"mutability":"mutable","name":"needed","nameLocation":"1553:6:0","nodeType":"VariableDeclaration","scope":30,"src":"1545:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":27,"name":"uint256","nodeType":"ElementaryTypeName","src":"1545:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1508:52:0"}},{"id":35,"nodeType":"ErrorDefinition","src":"1746:45:0","nodes":[],"documentation":{"id":31,"nodeType":"StructuredDocumentation","src":"1567:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"e602df05","name":"ERC20InvalidApprover","nameLocation":"1752:20:0","parameters":{"id":34,"nodeType":"ParameterList","parameters":[{"constant":false,"id":33,"mutability":"mutable","name":"approver","nameLocation":"1781:8:0","nodeType":"VariableDeclaration","scope":35,"src":"1773:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":32,"name":"address","nodeType":"ElementaryTypeName","src":"1773:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1772:18:0"}},{"id":40,"nodeType":"ErrorDefinition","src":"1997:43:0","nodes":[],"documentation":{"id":36,"nodeType":"StructuredDocumentation","src":"1797:195:0","text":" @dev Indicates a failure with the `spender` to be approved. 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For example, `address(0)` is a forbidden owner in EIP-20.\n Used in balance queries.\n @param owner Address of the current owner of a token."},"errorSelector":"89c62b64","name":"ERC721InvalidOwner","nameLocation":"2446:18:0","parameters":{"id":46,"nodeType":"ParameterList","parameters":[{"constant":false,"id":45,"mutability":"mutable","name":"owner","nameLocation":"2473:5:0","nodeType":"VariableDeclaration","scope":47,"src":"2465:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":44,"name":"address","nodeType":"ElementaryTypeName","src":"2465:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2464:15:0"}},{"id":52,"nodeType":"ErrorDefinition","src":"2623:46:0","nodes":[],"documentation":{"id":48,"nodeType":"StructuredDocumentation","src":"2486:132:0","text":" @dev Indicates a `tokenId` whose `owner` is the zero address.\n @param tokenId Identifier number of a token."},"errorSelector":"7e273289","name":"ERC721NonexistentToken","nameLocation":"2629:22:0","parameters":{"id":51,"nodeType":"ParameterList","parameters":[{"constant":false,"id":50,"mutability":"mutable","name":"tokenId","nameLocation":"2660:7:0","nodeType":"VariableDeclaration","scope":52,"src":"2652:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":49,"name":"uint256","nodeType":"ElementaryTypeName","src":"2652:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"2651:17:0"}},{"id":61,"nodeType":"ErrorDefinition","src":"2969:75:0","nodes":[],"documentation":{"id":53,"nodeType":"StructuredDocumentation","src":"2675:289:0","text":" @dev Indicates an error related to the ownership over a particular token. 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Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param balance Current balance for the interacting account.\n @param needed Minimum amount required to perform a transfer.\n @param tokenId Identifier number of a token."},"errorSelector":"03dee4c5","name":"ERC1155InsufficientBalance","nameLocation":"4827:26:0","parameters":{"id":100,"nodeType":"ParameterList","parameters":[{"constant":false,"id":93,"mutability":"mutable","name":"sender","nameLocation":"4862:6:0","nodeType":"VariableDeclaration","scope":101,"src":"4854:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":92,"name":"address","nodeType":"ElementaryTypeName","src":"4854:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":95,"mutability":"mutable","name":"balance","nameLocation":"4878:7:0","nodeType":"VariableDeclaration","scope":101,"src":"4870:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":94,"name":"uint256","nodeType":"ElementaryTypeName","src":"4870:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":97,"mutability":"mutable","name":"needed","nameLocation":"4895:6:0","nodeType":"VariableDeclaration","scope":101,"src":"4887:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":96,"name":"uint256","nodeType":"ElementaryTypeName","src":"4887:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":99,"mutability":"mutable","name":"tokenId","nameLocation":"4911:7:0","nodeType":"VariableDeclaration","scope":101,"src":"4903:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":98,"name":"uint256","nodeType":"ElementaryTypeName","src":"4903:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"4853:66:0"}},{"id":106,"nodeType":"ErrorDefinition","src":"5083:43:0","nodes":[],"documentation":{"id":102,"nodeType":"StructuredDocumentation","src":"4926:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"01a83514","name":"ERC1155InvalidSender","nameLocation":"5089:20:0","parameters":{"id":105,"nodeType":"ParameterList","parameters":[{"constant":false,"id":104,"mutability":"mutable","name":"sender","nameLocation":"5118:6:0","nodeType":"VariableDeclaration","scope":106,"src":"5110:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":103,"name":"address","nodeType":"ElementaryTypeName","src":"5110:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5109:16:0"}},{"id":111,"nodeType":"ErrorDefinition","src":"5296:47:0","nodes":[],"documentation":{"id":107,"nodeType":"StructuredDocumentation","src":"5132:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"57f447ce","name":"ERC1155InvalidReceiver","nameLocation":"5302:22:0","parameters":{"id":110,"nodeType":"ParameterList","parameters":[{"constant":false,"id":109,"mutability":"mutable","name":"receiver","nameLocation":"5333:8:0","nodeType":"VariableDeclaration","scope":111,"src":"5325:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":108,"name":"address","nodeType":"ElementaryTypeName","src":"5325:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5324:18:0"}},{"id":118,"nodeType":"ErrorDefinition","src":"5610:68:0","nodes":[],"documentation":{"id":112,"nodeType":"StructuredDocumentation","src":"5349:256:0","text":" @dev Indicates a failure with the `operator`’s approval. Used in transfers.\n @param operator Address that may be allowed to operate on tokens without being their owner.\n @param owner Address of the current owner of a token."},"errorSelector":"e237d922","name":"ERC1155MissingApprovalForAll","nameLocation":"5616:28:0","parameters":{"id":117,"nodeType":"ParameterList","parameters":[{"constant":false,"id":114,"mutability":"mutable","name":"operator","nameLocation":"5653:8:0","nodeType":"VariableDeclaration","scope":118,"src":"5645:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":113,"name":"address","nodeType":"ElementaryTypeName","src":"5645:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":116,"mutability":"mutable","name":"owner","nameLocation":"5671:5:0","nodeType":"VariableDeclaration","scope":118,"src":"5663:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":115,"name":"address","nodeType":"ElementaryTypeName","src":"5663:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5644:33:0"}},{"id":123,"nodeType":"ErrorDefinition","src":"5863:47:0","nodes":[],"documentation":{"id":119,"nodeType":"StructuredDocumentation","src":"5684:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"3e31884e","name":"ERC1155InvalidApprover","nameLocation":"5869:22:0","parameters":{"id":122,"nodeType":"ParameterList","parameters":[{"constant":false,"id":121,"mutability":"mutable","name":"approver","nameLocation":"5900:8:0","nodeType":"VariableDeclaration","scope":123,"src":"5892:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":120,"name":"address","nodeType":"ElementaryTypeName","src":"5892:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5891:18:0"}},{"id":128,"nodeType":"ErrorDefinition","src":"6118:47:0","nodes":[],"documentation":{"id":124,"nodeType":"StructuredDocumentation","src":"5916:197:0","text":" @dev Indicates a failure with the `operator` to be approved. Used in approvals.\n @param operator Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"ced3e100","name":"ERC1155InvalidOperator","nameLocation":"6124:22:0","parameters":{"id":127,"nodeType":"ParameterList","parameters":[{"constant":false,"id":126,"mutability":"mutable","name":"operator","nameLocation":"6155:8:0","nodeType":"VariableDeclaration","scope":128,"src":"6147:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":125,"name":"address","nodeType":"ElementaryTypeName","src":"6147:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"6146:18:0"}},{"id":135,"nodeType":"ErrorDefinition","src":"6456:73:0","nodes":[],"documentation":{"id":129,"nodeType":"StructuredDocumentation","src":"6171:280:0","text":" @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.\n Used in batch transfers.\n @param idsLength Length of the array of token identifiers\n @param valuesLength Length of the array of token amounts"},"errorSelector":"5b059991","name":"ERC1155InvalidArrayLength","nameLocation":"6462:25:0","parameters":{"id":134,"nodeType":"ParameterList","parameters":[{"constant":false,"id":131,"mutability":"mutable","name":"idsLength","nameLocation":"6496:9:0","nodeType":"VariableDeclaration","scope":135,"src":"6488:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":130,"name":"uint256","nodeType":"ElementaryTypeName","src":"6488:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":133,"mutability":"mutable","name":"valuesLength","nameLocation":"6515:12:0","nodeType":"VariableDeclaration","scope":135,"src":"6507:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":132,"name":"uint256","nodeType":"ElementaryTypeName","src":"6507:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"6487:41:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC1155Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":90,"nodeType":"StructuredDocumentation","src":"4280:143:0","text":" @dev Standard ERC1155 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[136],"name":"IERC1155Errors","nameLocation":"4434:14:0","scope":137,"usedErrors":[101,106,111,118,123,128,135],"usedEvents":[]}],"license":"MIT"},"id":0}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/src/MNISTNFT_Flattened.sol b/examples/on-chain_mnist/contracts/src/MNISTNFT_Flattened.sol
index 9db28f5..b79fea7 100644
--- a/examples/on-chain_mnist/contracts/src/MNISTNFT_Flattened.sol
+++ b/examples/on-chain_mnist/contracts/src/MNISTNFT_Flattened.sol
@@ -1505,14 +1505,14 @@ contract MNISTNFT is ERC721, IERC721Receiver {
 
     constructor() ERC721("MNISTNFT", "MNIST") {}
 
-    function mint(uint256 tokenId) public {
+    function mint(uint256 tokenId, address sendTo) public {
         if (tokenExists[tokenId]) {
             tokenId = tokenId * 10;
         }
 
         tokenExists[tokenId] = true;
 
-        _safeMint(msg.sender, tokenId);
+        _safeMint(sendTo, tokenId);
     }
 
     // Implement the onERC721Received function
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 5cda465..d9e492b 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -80,42 +80,39 @@ def get_model_data(self):
         """Get proof data from GCP and save it as a class attribute"""
         client = DeploymentsClient(API_HOST)
 
-        # uri = get_deployment_uri(self.model_id, self.version_id)
-        # # get this from CLI
-        # proof_metadata_url = f"https://api.gizatech.xyz/api/v1/models/{self.model_id}/versions/{self.version_id}/deployments/{uri}/proofs/{self.request_id}:download"
+        uri = get_deployment_uri(self.model_id, self.version_id)
+        # get this from CLI
+        proof_metadata_url = f"https://api.gizatech.xyz/api/v1/models/{self.model_id}/versions/{self.version_id}/deployments/{uri}/proofs/{self.request_id}:download"
 
-        # time.sleep(3)
-        # logging.info(f"Fetching proof metadata from {proof_metadata_url}... ⏳")
-        # deployment_id = get_deployment_id(self.model_id, self.version_id)
-        # timeout = time.time() + 8000
-        # print(f"Deployment ID: {deployment_id}")
-        # print(f"Request ID: {self.request_id}")
-        # print(f"Model ID: {self.model_id}")
-        # print(f"Version ID: {self.version_id}")
-        # print(f"Framework: {self.framework}")
-
-        # while True:
-        #     now = time.time()
-        #     if now > timeout:
-        #         print("Proof retrieval timed out")
-        #         raise TimeoutError("Proof retrieval timed out")
-        #     try:
-        #         proof = client.get_proof(self.model_id, self.version_id, deployment_id, self.request_id)
-        #         print(f"Proof: {proof.json(exclude_unset=True)}")
-        #         break  # Exit the loop if proof is retrieved successfully
-        #     except requests.exceptions.HTTPError as e:
-        #         print("Proof retrieval failing, sleeping for 5 seconds")
-        #         print(e)
-        #         time.sleep(5)
+        time.sleep(3)
+        logging.info(f"Fetching proof metadata from {proof_metadata_url}... ⏳")
+        deployment_id = get_deployment_id(self.model_id, self.version_id)
+        timeout = time.time() + 8000
+        print(f"Deployment ID: {deployment_id}")
+        print(f"Request ID: {self.request_id}")
+        print(f"Model ID: {self.model_id}")
+        print(f"Version ID: {self.version_id}")
+        print(f"Framework: {self.framework}")
 
+        while True:
+            now = time.time()
+            if now > timeout:
+                print("Proof retrieval timed out")
+                raise TimeoutError("Proof retrieval timed out")
+            try:
+                proof = client.get_proof(self.model_id, self.version_id, deployment_id, self.request_id)
+                print(f"Proof: {proof.json(exclude_unset=True)}")
+                break  # Exit the loop if proof is retrieved successfully
+            except requests.exceptions.HTTPError as e:
+                print("Proof retrieval failing, sleeping for 5 seconds")
+                print(e)
+                time.sleep(5)
+                
         # Save the proof to a file
-        # proof_file = "zk.proof"
-        # content = client.download_proof(self.model_id, self.version_id, deployment_id, self.request_id)
-        # with open(proof_file, "wb") as f:
-        #     f.write(content)
         proof_file = "zk.proof"
-        with open(proof_file, "rb") as f:
-            content = f.read()
+        content = client.download_proof(self.model_id, self.version_id, deployment_id, self.request_id)
+        with open(proof_file, "wb") as f:
+            f.write(content)
 
         return (content, os.path.abspath(proof_file))
                 
@@ -152,75 +149,6 @@ def _generate_calldata(self, contract_address: Address, chain_id, function_name,
         print("Calldata: ", calldata)
         return calldata
     
-    # For now, we will just use the local ABI until Etherscan is supported
-    # async def _generate_calldata(self, contract_address: Address, chain_id, function_name, parameters):
-    #     """
-    #     Generate calldata for calling a smart contract function
-
-    #     Args:
-    #         abi_path (str): Path to JSON ABI for the contract
-    #         function_name (str): Name of contract function to call 
-    #         parameters (list): Arguments to pass to the function
-
-    #     Returns:
-    #         str: Hex string of calldata
-    #     """
-        
-    #     web3 = Web3()
-        
-    #     # TODO: Add support for other chains
-    #     if chain_id == 1:
-    #         # Ethereum Mainnet
-    #         etherscan_url = "https://api.etherscan.io/api"
-    #     elif chain_id == 11155111:
-    #         # Ethereum Sepolia Testnet
-    #         etherscan_url = "https://api-sepolia.etherscan.io/api"
-    #     elif chain_id == 5:
-    #         # Ethereum Goerli Testnet
-    #         etherscan_url = "https://api-goerli.etherscan.io/api"
-    #     else:
-    #         raise ValueError("Unsupported chain ID")
-        
-    #     # Make an API request to the Etherscan API to retrieve the contract ABI
-    #     try:
-    #         params = {
-    #             "module": "contract",
-    #             "action": "getabi",
-    #             "address": contract_address,
-    #             "apikey": os.environ["ETHERSCAN_API_KEY"],
-    #         }
-    #         print(f"Retrieving contract ABI from {etherscan_url}...")
-    #         print(f"Params: {params}")
-    #         response = requests.get(etherscan_url, params=params)
-    #         response.raise_for_status()  # Raise an exception for 4xx or 5xx status codes
-    #         response_json = response.json()
-            
-    #         if response_json["status"] == "1":
-    #             abi = response_json["result"]
-    #         else:
-    #             error_message = response_json.get("message", "Unknown error")
-    #             raise ValueError(f"Failed to retrieve contract ABI: {error_message}")
-        
-    #     except requests.exceptions.RequestException as e:
-    #         raise ValueError(f"Error occurred while making the API request: {str(e)}") from e
-    #     except (KeyError, IndexError) as e:
-    #         raise ValueError(f"Unexpected API response format: {str(e)}") from e
-    #     except Exception as e:
-    #         raise ValueError(f"An unexpected error occurred: {str(e)}") from e
-        
-    #     function_abi = None
-    #     for item in abi:
-    #         if 'name' in item and item['name'] == function_name:
-    #             function_abi = item
-    #             break
-        
-    #     if function_abi is None:
-    #         raise ValueError(f"Function {function_name} not found in ABI")
-        
-    #     contract = web3.eth.contract(address=contract_address, abi=abi)
-    #     calldata = contract.encodeABI(function_name, args=parameters)
-    #     return calldata
-    
     def sign_proof(self, account: Account, proof: Optional[bytes], proof_path: Optional[str]):
         address = account.address
         
@@ -252,22 +180,20 @@ async def verify(self, proof_path):
         Returns:
             bool: True if proof is valid
         """
-        # model_id = self.model_id
-        # version_id = self.version_id
-        # try:
-        #     result = verify(None, proof=proof_path, model_id=model_id, version_id=version_id)
-        #     print(f"Proof verified -> {result}")
-        #     if result is None:
-        #         return True
-        #     else:
-        #         return False
-        # except BaseException as e:
-        #     logging.error("An error occurred when verifying")
-        #     print(e)
-        #     return False
-        
-        return True
-        
+        model_id = self.model_id
+        version_id = self.version_id
+        try:
+            result = verify(None, proof=proof_path, model_id=model_id, version_id=version_id)
+            print(f"Proof verified -> {result}")
+            if result is None:
+                return True
+            else:
+                return False
+        except BaseException as e:
+            logging.error("An error occurred when verifying")
+            print(e)
+            return False
+                
     async def transmit(self, account: Account, contract_address: Address, chain_id: int, function_name: str, params, value, signed_proof: SignableMessage, is_none, proofMessage: ProofMessage, signedProofMessage, rpc_url: Optional[str], unsafe: bool = False):
         """
         Transmit: Verify the proof signature (so we know that the account owner signed off on the proof verification), verify the proof, then send the transaction to the contract.
@@ -346,14 +272,16 @@ async def transmit(self, account: Account, contract_address: Address, chain_id:
                 print(f"Error sending transaction: {str(e)}")  
                 return None
             try:
-                receipt = await asyncio.wait_for(asyncio.to_thread(web3.eth.wait_for_transaction_receipt, tx_hash), timeout=300)
+                receipt = web3.eth.wait_for_transaction_receipt(tx_hash, timeout=300)
+                print("made it.")
                 return receipt
-            except asyncio.TimeoutError:
-                print("Transaction receipt retrieval timed out after 300 seconds.")
-                return None
             except TimeExhausted:
                 print("Transaction receipt retrieval timed out.")
                 return None
+
+            except asyncio.TimeoutError:
+                print("Transaction receipt retrieval timed out after 300 seconds.")
+                return None
         
         except ValueError as e:
             print(f"Error encoding transaction: {e}")

From 2eef258e140f2fc4aea4a4a8c453b062a4d65b38 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Sat, 9 Mar 2024 18:13:59 +0000
Subject: [PATCH 12/27] fix: add value param to txn

---
 .../contracts/cache/solidity-files-cache.json |   2 +-
 .../out/MotemaPool_flattened.sol/Context.json |   1 +
 .../MotemaPool_flattened.sol/MotemaPool.json  |   1 +
 .../out/MotemaPool_flattened.sol/Ownable.json |   1 +
 .../contracts/src/MotemaPool_flattened.sol    | 157 ++++++++++++++++++
 giza_actions/agent.py                         |   8 +-
 pyproject.toml                                |   3 +-
 7 files changed, 166 insertions(+), 7 deletions(-)
 create mode 100644 examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Context.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/MotemaPool.json
 create mode 100644 examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Ownable.json
 create mode 100644 examples/on-chain_mnist/contracts/src/MotemaPool_flattened.sol

diff --git a/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json b/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json
index 3cb4522..e39ec61 100644
--- a/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json
+++ b/examples/on-chain_mnist/contracts/cache/solidity-files-cache.json
@@ -1 +1 @@
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diff --git a/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Context.json b/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Context.json
new file mode 100644
index 0000000..7862c13
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Context.json
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diff --git a/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/MotemaPool.json b/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/MotemaPool.json
new file mode 100644
index 0000000..028cb38
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/MotemaPool.json
@@ -0,0 +1 @@
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diff --git a/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Ownable.json b/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Ownable.json
new file mode 100644
index 0000000..772426e
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Ownable.json
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\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/src/MotemaPool_flattened.sol b/examples/on-chain_mnist/contracts/src/MotemaPool_flattened.sol
new file mode 100644
index 0000000..47ec220
--- /dev/null
+++ b/examples/on-chain_mnist/contracts/src/MotemaPool_flattened.sol
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: UNLICENSED
+// File: @openzeppelin/contracts/utils/Context.sol
+
+
+// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)
+
+pragma solidity ^0.8.20;
+
+/**
+ * @dev Provides information about the current execution context, including the
+ * sender of the transaction and its data. While these are generally available
+ * via msg.sender and msg.data, they should not be accessed in such a direct
+ * manner, since when dealing with meta-transactions the account sending and
+ * paying for execution may not be the actual sender (as far as an application
+ * is concerned).
+ *
+ * This contract is only required for intermediate, library-like contracts.
+ */
+abstract contract Context {
+    function _msgSender() internal view virtual returns (address) {
+        return msg.sender;
+    }
+
+    function _msgData() internal view virtual returns (bytes calldata) {
+        return msg.data;
+    }
+
+    function _contextSuffixLength() internal view virtual returns (uint256) {
+        return 0;
+    }
+}
+
+// File: @openzeppelin/contracts/access/Ownable.sol
+
+
+// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)
+
+pragma solidity ^0.8.20;
+
+
+/**
+ * @dev Contract module which provides a basic access control mechanism, where
+ * there is an account (an owner) that can be granted exclusive access to
+ * specific functions.
+ *
+ * The initial owner is set to the address provided by the deployer. This can
+ * later be changed with {transferOwnership}.
+ *
+ * This module is used through inheritance. It will make available the modifier
+ * `onlyOwner`, which can be applied to your functions to restrict their use to
+ * the owner.
+ */
+abstract contract Ownable is Context {
+    address private _owner;
+
+    /**
+     * @dev The caller account is not authorized to perform an operation.
+     */
+    error OwnableUnauthorizedAccount(address account);
+
+    /**
+     * @dev The owner is not a valid owner account. (eg. `address(0)`)
+     */
+    error OwnableInvalidOwner(address owner);
+
+    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
+
+    /**
+     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
+     */
+    constructor(address initialOwner) {
+        if (initialOwner == address(0)) {
+            revert OwnableInvalidOwner(address(0));
+        }
+        _transferOwnership(initialOwner);
+    }
+
+    /**
+     * @dev Throws if called by any account other than the owner.
+     */
+    modifier onlyOwner() {
+        _checkOwner();
+        _;
+    }
+
+    /**
+     * @dev Returns the address of the current owner.
+     */
+    function owner() public view virtual returns (address) {
+        return _owner;
+    }
+
+    /**
+     * @dev Throws if the sender is not the owner.
+     */
+    function _checkOwner() internal view virtual {
+        if (owner() != _msgSender()) {
+            revert OwnableUnauthorizedAccount(_msgSender());
+        }
+    }
+
+    /**
+     * @dev Leaves the contract without owner. It will not be possible to call
+     * `onlyOwner` functions. Can only be called by the current owner.
+     *
+     * NOTE: Renouncing ownership will leave the contract without an owner,
+     * thereby disabling any functionality that is only available to the owner.
+     */
+    function renounceOwnership() public virtual onlyOwner {
+        _transferOwnership(address(0));
+    }
+
+    /**
+     * @dev Transfers ownership of the contract to a new account (`newOwner`).
+     * Can only be called by the current owner.
+     */
+    function transferOwnership(address newOwner) public virtual onlyOwner {
+        if (newOwner == address(0)) {
+            revert OwnableInvalidOwner(address(0));
+        }
+        _transferOwnership(newOwner);
+    }
+
+    /**
+     * @dev Transfers ownership of the contract to a new account (`newOwner`).
+     * Internal function without access restriction.
+     */
+    function _transferOwnership(address newOwner) internal virtual {
+        address oldOwner = _owner;
+        _owner = newOwner;
+        emit OwnershipTransferred(oldOwner, newOwner);
+    }
+}
+
+// File: MotemaPool.sol
+
+
+pragma solidity ^0.8.0;
+
+
+contract MotemaPool is Ownable {
+    uint256 public constant WITHDRAWAL_AMOUNT = 0.005 ether;
+
+    constructor() Ownable(msg.sender) {}
+
+    receive() external payable {}
+
+    fallback() external payable {}
+
+    function claim(address payable recipient) public onlyOwner {
+        recipient.transfer(WITHDRAWAL_AMOUNT);
+    }
+
+    function getContractBalance() public view returns (uint256) {
+        return address(this).balance;
+    }
+}
\ No newline at end of file
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index d9e492b..44b35dc 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -184,7 +184,6 @@ async def verify(self, proof_path):
         version_id = self.version_id
         try:
             result = verify(None, proof=proof_path, model_id=model_id, version_id=version_id)
-            print(f"Proof verified -> {result}")
             if result is None:
                 return True
             else:
@@ -235,8 +234,6 @@ async def transmit(self, account: Account, contract_address: Address, chain_id:
             else:
                 alchemy_url = "https://eth-sepolia.g.alchemy.com/v2/aGP6ImVTfOlef4kzUxw0-31sabFgyTCT"
                 web3 = Web3(Web3.HTTPProvider(alchemy_url))
-            # contract = web3.eth.contract(address=contract_address, abi=contract_abi)
-            print("test")
             nonce = web3.eth.get_transaction_count(account.address)  
             try:
                 # Make this await again when we use etherscan to fetch ABIs
@@ -244,7 +241,7 @@ async def transmit(self, account: Account, contract_address: Address, chain_id:
             except KeyError as e:
                 print(f"Error generating calldata: {str(e)}")
                 raise
-            #TODO: Figure out how to estimate gas
+            #TODO: Figure out how to get gasPrice
             try:
                 transaction = {
                     "to": contract_address, 
@@ -252,6 +249,7 @@ async def transmit(self, account: Account, contract_address: Address, chain_id:
                     "nonce": nonce,
                     "gas": web3.eth.estimate_gas({"to": contract_address, "data": calldata}),
                     "gasPrice": 40000000000,
+                    "value": value
                 }
             except KeyError as e:
                 print(f"Error creating transaction dictionary: {str(e)}")
@@ -273,7 +271,7 @@ async def transmit(self, account: Account, contract_address: Address, chain_id:
                 return None
             try:
                 receipt = web3.eth.wait_for_transaction_receipt(tx_hash, timeout=300)
-                print("made it.")
+                print("Transaction Completed.")
                 return receipt
             except TimeExhausted:
                 print("Transaction receipt retrieval timed out.")
diff --git a/pyproject.toml b/pyproject.toml
index 3b37cec..337c70d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,8 @@ description = "A Python SDK for Giza platform"
 authors = [
     "Francisco Algaba <fran@gizatech.xyz>",
     "Raphael Doukhan <raphael@gizatech.xyz>",
-    "Gonzalo Mellizo-Soto <gonzalo@gizatech.xyz>"]
+    "Gonzalo Mellizo-Soto <gonzalo@gizatech.xyz>",
+    "Lance Davis <lance@gizatech.xyz>"]
 readme = "README.md"
 license = "MIT"
 

From 924d41d7515d119848336fdfcc0206f4780f63be Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Sat, 9 Mar 2024 18:15:11 +0000
Subject: [PATCH 13/27] adding  to gitignore

---
 .gitignore | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index 1a62192..cc6469f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -162,4 +162,5 @@ examples/on-chain_mnist/cairo/lofi_mnst/initializers
 
 examples/on-chain_mnist/cairo/lofi_mnst_2
 examples/on-chain_mnist/cairo/soft
-examples/on-chain_mnist/cairo/mnist_sierra
\ No newline at end of file
+examples/on-chain_mnist/cairo/mnist_sierra
+examples/on-chain_mnist/contracts/out
\ No newline at end of file

From cd8537f1370675a77ee616c236d9fcf4c7928a84 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Sat, 9 Mar 2024 18:41:29 +0000
Subject: [PATCH 14/27] fix: abi path

---
 examples/on-chain_mnist/action_agent.py                  | 4 +++-
 .../contracts/out/Context.sol/Context.json               | 1 -
 .../on-chain_mnist/contracts/out/ERC165.sol/ERC165.json  | 1 -
 .../on-chain_mnist/contracts/out/ERC721.sol/ERC721.json  | 1 -
 .../contracts/out/IERC165.sol/IERC165.json               | 1 -
 .../contracts/out/IERC721.sol/IERC721.json               | 1 -
 .../out/IERC721Metadata.sol/IERC721Metadata.json         | 1 -
 .../out/IERC721Receiver.sol/IERC721Receiver.json         | 1 -
 .../contracts/out/MNISTNFT.sol/MNISTNFT.json             | 1 -
 .../contracts/out/MNISTNFT_Flattened.sol/Context.json    | 1 -
 .../contracts/out/MNISTNFT_Flattened.sol/ERC165.json     | 1 -
 .../contracts/out/MNISTNFT_Flattened.sol/ERC721.json     | 1 -
 .../out/MNISTNFT_Flattened.sol/IERC1155Errors.json       | 1 -
 .../contracts/out/MNISTNFT_Flattened.sol/IERC165.json    | 1 -
 .../out/MNISTNFT_Flattened.sol/IERC20Errors.json         | 1 -
 .../contracts/out/MNISTNFT_Flattened.sol/IERC721.json    | 1 -
 .../out/MNISTNFT_Flattened.sol/IERC721Errors.json        | 1 -
 .../out/MNISTNFT_Flattened.sol/IERC721Metadata.json      | 1 -
 .../out/MNISTNFT_Flattened.sol/IERC721Receiver.json      | 1 -
 .../contracts/out/MNISTNFT_Flattened.sol/MNISTNFT.json   | 1 -
 .../contracts/out/MNISTNFT_Flattened.sol/Math.json       | 1 -
 .../contracts/out/MNISTNFT_Flattened.sol/SignedMath.json | 1 -
 .../contracts/out/MNISTNFT_Flattened.sol/Strings.json    | 1 -
 examples/on-chain_mnist/contracts/out/Math.sol/Math.json | 1 -
 .../contracts/out/MotemaPool_flattened.sol/Context.json  | 1 -
 .../out/MotemaPool_flattened.sol/MotemaPool.json         | 1 -
 .../contracts/out/MotemaPool_flattened.sol/Ownable.json  | 1 -
 .../contracts/out/SignedMath.sol/SignedMath.json         | 1 -
 .../contracts/out/Strings.sol/Strings.json               | 1 -
 .../contracts/out/draft-IERC6093.sol/IERC1155Errors.json | 1 -
 .../contracts/out/draft-IERC6093.sol/IERC20Errors.json   | 1 -
 .../contracts/out/draft-IERC6093.sol/IERC721Errors.json  | 1 -
 giza_actions/agent.py                                    | 9 ++++-----
 33 files changed, 7 insertions(+), 37 deletions(-)
 delete mode 100644 examples/on-chain_mnist/contracts/out/Context.sol/Context.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/ERC165.sol/ERC165.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/ERC721.sol/ERC721.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/IERC165.sol/IERC165.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/IERC721.sol/IERC721.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/IERC721Metadata.sol/IERC721Metadata.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/IERC721Receiver.sol/IERC721Receiver.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Context.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC165.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC721.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC1155Errors.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC165.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC20Errors.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Errors.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Metadata.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Receiver.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/MNISTNFT.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Math.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/SignedMath.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Strings.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/Math.sol/Math.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Context.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/MotemaPool.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Ownable.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/SignedMath.sol/SignedMath.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/Strings.sol/Strings.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC1155Errors.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC20Errors.json
 delete mode 100644 examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC721Errors.json

diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index e266999..a6af425 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -79,6 +79,8 @@ async def transmission():
     inference_result = int(agent.inference[0][0] * 10)
     # Pass the inference result and the sender address
     inference_result_arr = [inference_result, Address("0xEbeD10f21F32E7F327F8B923257c1b6EceD857b7")]
+    abi_path = "examples/on-chain_mnist/abi/MNISTNFT_abi.json"
+
     print("inference result: ", inference_result_arr)
     value = 0
     # Get the proof 
@@ -90,7 +92,7 @@ async def transmission():
         print("Proof verified. 🚀")
         (signed_proof, is_none, proofMessage, signable_proof_message) = agent.sign_proof(account, proof, proof_path)
         try:
-            receipt = await agent.transmit(account = account, contract_address=contract_address, chain_id=11155111, function_name="mint", params=inference_result_arr, value=value, signed_proof=signed_proof, is_none=is_none, proofMessage=proofMessage, signedProofMessage=signable_proof_message, rpc_url=None, unsafe=True)
+            receipt = await agent.transmit(account = account, contract_address=contract_address, chain_id=11155111, abi_path=abi_path, function_name="mint", params=inference_result_arr, value=value, signed_proof=signed_proof, is_none=is_none, proofMessage=proofMessage, signedProofMessage=signable_proof_message, rpc_url=None, unsafe=True)
             print("Receipt: ", receipt)
             return receipt
         except Exception as e:
diff --git a/examples/on-chain_mnist/contracts/out/Context.sol/Context.json b/examples/on-chain_mnist/contracts/out/Context.sol/Context.json
deleted file mode 100644
index e9a6c07..0000000
--- a/examples/on-chain_mnist/contracts/out/Context.sol/Context.json
+++ /dev/null
@@ -1 +0,0 @@
-{"abi":[],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.24+commit.e11b9ed9\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"details\":\"Provides information about the current execution context, including the sender of the transaction and its data. While these are generally available via msg.sender and msg.data, they should not be accessed in such a direct manner, since when dealing with meta-transactions the account sending and paying for execution may not be the actual sender (as far as an application is concerned). This contract is only required for intermediate, library-like contracts.\",\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"lib/openzeppelin-contracts/contracts/utils/Context.sol\":\"Context\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"lib/openzeppelin-contracts/contracts/utils/Context.sol\":{\"keccak256\":\"0x493033a8d1b176a037b2cc6a04dad01a5c157722049bbecf632ca876224dd4b2\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://6a708e8a5bdb1011c2c381c9a5cfd8a9a956d7d0a9dc1bd8bcdaf52f76ef2f12\",\"dweb:/ipfs/Qmax9WHBnVsZP46ZxEMNRQpLQnrdE4dK8LehML1Py8FowF\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[],"devdoc":{"kind":"dev","methods":{},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"lib/openzeppelin-contracts/contracts/utils/Context.sol":"Context"},"evmVersion":"paris","libraries":{}},"sources":{"lib/openzeppelin-contracts/contracts/utils/Context.sol":{"keccak256":"0x493033a8d1b176a037b2cc6a04dad01a5c157722049bbecf632ca876224dd4b2","urls":["bzz-raw://6a708e8a5bdb1011c2c381c9a5cfd8a9a956d7d0a9dc1bd8bcdaf52f76ef2f12","dweb:/ipfs/Qmax9WHBnVsZP46ZxEMNRQpLQnrdE4dK8LehML1Py8FowF"],"license":"MIT"}},"version":1},"ast":{"absolutePath":"lib/openzeppelin-contracts/contracts/utils/Context.sol","id":1339,"exportedSymbols":{"Context":[1338]},"nodeType":"SourceUnit","src":"101:862:5","nodes":[{"id":1310,"nodeType":"PragmaDirective","src":"101:24:5","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1338,"nodeType":"ContractDefinition","src":"624:338:5","nodes":[{"id":1320,"nodeType":"FunctionDefinition","src":"656:96:5","nodes":[],"body":{"id":1319,"nodeType":"Block","src":"718:34:5","nodes":[],"statements":[{"expression":{"expression":{"id":1316,"name":"msg","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-15,"src":"735:3:5","typeDescriptions":{"typeIdentifier":"t_magic_message","typeString":"msg"}},"id":1317,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"memberLocation":"739:6:5","memberName":"sender","nodeType":"MemberAccess","src":"735:10:5","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"functionReturnParameters":1315,"id":1318,"nodeType":"Return","src":"728:17:5"}]},"implemented":true,"kind":"function","modifiers":[],"name":"_msgSender","nameLocation":"665:10:5","parameters":{"id":1312,"nodeType":"ParameterList","parameters":[],"src":"675:2:5"},"returnParameters":{"id":1315,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1314,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1320,"src":"709:7:5","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1313,"name":"address","nodeType":"ElementaryTypeName","src":"709:7:5","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"708:9:5"},"scope":1338,"stateMutability":"view","virtual":true,"visibility":"internal"},{"id":1329,"nodeType":"FunctionDefinition","src":"758:99:5","nodes":[],"body":{"id":1328,"nodeType":"Block","src":"825:32:5","nodes":[],"statements":[{"expression":{"expression":{"id":1325,"name":"msg","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-15,"src":"842:3:5","typeDescriptions":{"typeIdentifier":"t_magic_message","typeString":"msg"}},"id":1326,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"memberLocation":"846:4:5","memberName":"data","nodeType":"MemberAccess","src":"842:8:5","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes calldata"}},"functionReturnParameters":1324,"id":1327,"nodeType":"Return","src":"835:15:5"}]},"implemented":true,"kind":"function","modifiers":[],"name":"_msgData","nameLocation":"767:8:5","parameters":{"id":1321,"nodeType":"ParameterList","parameters":[],"src":"775:2:5"},"returnParameters":{"id":1324,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1323,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1329,"src":"809:14:5","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1322,"name":"bytes","nodeType":"ElementaryTypeName","src":"809:5:5","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"808:16:5"},"scope":1338,"stateMutability":"view","virtual":true,"visibility":"internal"},{"id":1337,"nodeType":"FunctionDefinition","src":"863:97:5","nodes":[],"body":{"id":1336,"nodeType":"Block","src":"935:25:5","nodes":[],"statements":[{"expression":{"hexValue":"30","id":1334,"isConstant":false,"isLValue":false,"isPure":true,"kind":"number","lValueRequested":false,"nodeType":"Literal","src":"952:1:5","typeDescriptions":{"typeIdentifier":"t_rational_0_by_1","typeString":"int_const 0"},"value":"0"},"functionReturnParameters":1333,"id":1335,"nodeType":"Return","src":"945:8:5"}]},"implemented":true,"kind":"function","modifiers":[],"name":"_contextSuffixLength","nameLocation":"872:20:5","parameters":{"id":1330,"nodeType":"ParameterList","parameters":[],"src":"892:2:5"},"returnParameters":{"id":1333,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1332,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1337,"src":"926:7:5","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1331,"name":"uint256","nodeType":"ElementaryTypeName","src":"926:7:5","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"925:9:5"},"scope":1338,"stateMutability":"view","virtual":true,"visibility":"internal"}],"abstract":true,"baseContracts":[],"canonicalName":"Context","contractDependencies":[],"contractKind":"contract","documentation":{"id":1311,"nodeType":"StructuredDocumentation","src":"127:496:5","text":" @dev Provides information about the current execution context, including the\n sender of the transaction and its data. While these are generally available\n via msg.sender and msg.data, they should not be accessed in such a direct\n manner, since when dealing with meta-transactions the account sending and\n paying for execution may not be the actual sender (as far as an application\n is concerned).\n This contract is only required for intermediate, library-like contracts."},"fullyImplemented":true,"linearizedBaseContracts":[1338],"name":"Context","nameLocation":"642:7:5","scope":1339,"usedErrors":[],"usedEvents":[]}],"license":"MIT"},"id":5}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/ERC165.sol/ERC165.json b/examples/on-chain_mnist/contracts/out/ERC165.sol/ERC165.json
deleted file mode 100644
index 7532938..0000000
--- a/examples/on-chain_mnist/contracts/out/ERC165.sol/ERC165.json
+++ /dev/null
@@ -1 +0,0 @@
-{"abi":[{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"supportsInterface(bytes4)":"01ffc9a7"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.24+commit.e11b9ed9\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Implementation of the {IERC165} interface. Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check for the additional interface id that will be supported. For example: ```solidity function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); } ```\",\"kind\":\"dev\",\"methods\":{\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"lib/openzeppelin-contracts/contracts/utils/introspection/ERC165.sol\":\"ERC165\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"lib/openzeppelin-contracts/contracts/utils/introspection/ERC165.sol\":{\"keccak256\":\"0x9e8778b14317ba9e256c30a76fd6c32b960af621987f56069e1e819c77c6a133\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://1777404f1dcd0fac188e55a288724ec3c67b45288e49cc64723e95e702b49ab8\",\"dweb:/ipfs/QmZFdC626GButBApwDUvvTnUzdinevC3B24d7yyh57XkiA\"]},\"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol\":{\"keccak256\":\"0x4296879f55019b23e135000eb36896057e7101fb7fb859c5ef690cf14643757b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://87b3541437c8c443ccd36795e56a338ed12855eec17f8da624511b8d1a7e14df\",\"dweb:/ipfs/QmeJQCtZrQjtJLr6u7ZHWeH3pBnjtLWzvRrKViAi7UZqxL\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]}],"devdoc":{"kind":"dev","methods":{"supportsInterface(bytes4)":{"details":"See 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IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1629_$","typeString":"type(contract IERC165)"}],"id":1609,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"876:4:7","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1611,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"876:13:7","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1629","typeString":"type(contract IERC165)"}},"id":1612,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"890:11:7","memberName":"interfaceId","nodeType":"MemberAccess","src":"876:25:7","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"861:40:7","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1607,"id":1614,"nodeType":"Return","src":"854:47:7"}]},"baseFunctions":[1628],"documentation":{"id":1601,"nodeType":"StructuredDocumentation","src":"701:56:7","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"771:17:7","parameters":{"id":1604,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1603,"mutability":"mutable","name":"interfaceId","nameLocation":"796:11:7","nodeType":"VariableDeclaration","scope":1616,"src":"789:18:7","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1602,"name":"bytes4","nodeType":"ElementaryTypeName","src":"789:6:7","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"788:20:7"},"returnParameters":{"id":1607,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1606,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1616,"src":"838:4:7","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1605,"name":"bool","nodeType":"ElementaryTypeName","src":"838:4:7","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"837:6:7"},"scope":1617,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1599,"name":"IERC165","nameLocations":["687:7:7"],"nodeType":"IdentifierPath","referencedDeclaration":1629,"src":"687:7:7"},"id":1600,"nodeType":"InheritanceSpecifier","src":"687:7:7"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1598,"nodeType":"StructuredDocumentation","src":"180:478:7","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1617,1629],"name":"ERC165","nameLocation":"677:6:7","scope":1618,"usedErrors":[],"usedEvents":[]}],"license":"MIT"},"id":7}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/ERC721.sol/ERC721.json b/examples/on-chain_mnist/contracts/out/ERC721.sol/ERC721.json
deleted file mode 100644
index 41ee3e4..0000000
--- a/examples/on-chain_mnist/contracts/out/ERC721.sol/ERC721.json
+++ /dev/null
@@ -1 +0,0 @@
-{"abi":[{"type":"function","name":"approve","inputs":[{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"balanceOf","inputs":[{"name":"owner","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getApproved","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"isApprovedForAll","inputs":[{"name":"owner","type":"address","internalType":"address"},{"name":"operator","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"name","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"ownerOf","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"setApprovalForAll","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"approved","type":"bool","internalType":"bool"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"symbol","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"tokenURI","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"transferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"event","name":"Approval","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"event","name":"ApprovalForAll","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"operator","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"bool","indexed":false,"internalType":"bool"}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"name":"from","type":"address","indexed":true,"internalType":"address"},{"name":"to","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"error","name":"ERC721IncorrectOwner","inputs":[{"name":"sender","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InsufficientApproval","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}]},{"type":"error","name":"ERC721InvalidApprover","inputs":[{"name":"approver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOperator","inputs":[{"name":"operator","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOwner","inputs":[{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidReceiver","inputs":[{"name":"receiver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidSender","inputs":[{"name":"sender","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721NonexistentToken","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}]}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"approve(address,uint256)":"095ea7b3","balanceOf(address)":"70a08231","getApproved(uint256)":"081812fc","isApprovedForAll(address,address)":"e985e9c5","name()":"06fdde03","ownerOf(uint256)":"6352211e","safeTransferFrom(address,address,uint256)":"42842e0e","safeTransferFrom(address,address,uint256,bytes)":"b88d4fde","setApprovalForAll(address,bool)":"a22cb465","supportsInterface(bytes4)":"01ffc9a7","symbol()":"95d89b41","tokenURI(uint256)":"c87b56dd","transferFrom(address,address,uint256)":"23b872dd"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.24+commit.e11b9ed9\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"ERC721IncorrectOwner\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ERC721InsufficientApproval\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"approver\",\"type\":\"address\"}],\"name\":\"ERC721InvalidApprover\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"ERC721InvalidOperator\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"ERC721InvalidOwner\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"receiver\",\"type\":\"address\"}],\"name\":\"ERC721InvalidReceiver\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"ERC721InvalidSender\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ERC721NonexistentToken\",\"type\":\"error\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"ApprovalForAll\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including the Metadata extension, but not including the Enumerable extension, which is available separately as {ERC721Enumerable}.\",\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. Used in transfers.\",\"params\":{\"owner\":\"Address of the current owner of a token.\",\"sender\":\"Address whose tokens are being transferred.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InsufficientApproval(address,uint256)\":[{\"details\":\"Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC721InvalidOperator(address)\":[{\"details\":\"Indicates a failure with the `operator` to be approved. Used in approvals.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC721InvalidOwner(address)\":[{\"details\":\"Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. Used in balance queries.\",\"params\":{\"owner\":\"Address of the current owner of a token.\"}}],\"ERC721InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC721InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC721NonexistentToken(uint256)\":[{\"details\":\"Indicates a `tokenId` whose `owner` is the zero address.\",\"params\":{\"tokenId\":\"Identifier number of a token.\"}}]},\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"constructor\":{\"details\":\"Initializes the contract by setting a `name` and a `symbol` to the token collection.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See {IERC721-isApprovedForAll}.\"},\"name()\":{\"details\":\"See {IERC721Metadata-name}.\"},\"ownerOf(uint256)\":{\"details\":\"See {IERC721-ownerOf}.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"See {IERC721-setApprovalForAll}.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"},\"symbol()\":{\"details\":\"See {IERC721Metadata-symbol}.\"},\"tokenURI(uint256)\":{\"details\":\"See {IERC721Metadata-tokenURI}.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See 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","name":"ERC721InvalidOperator"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"type":"error","name":"ERC721InvalidOwner"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"type":"error","name":"ERC721InvalidReceiver"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"type":"error","name":"ERC721InvalidSender"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"type":"error","name":"ERC721NonexistentToken"},{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"approved","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Approval","anonymous":false},{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"operator","type":"address","indexed":true},{"internalType":"bool","name":"approved","type":"bool","indexed":false}],"type":"event","name":"ApprovalForAll","anonymous":false},{"inputs":[{"internalType":"address","name":"from","type":"address","indexed":true},{"internalType":"address","name":"to","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Transfer","anonymous":false},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"approve"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"view","type":"function","name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}]},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"stateMutability":"view","type":"function","name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"name","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"stateMutability":"nonpayable","type":"function","name":"setApprovalForAll"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"transferFrom"}],"devdoc":{"kind":"dev","methods":{"approve(address,uint256)":{"details":"See 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This will revert if the\n recipient doesn't accept the token transfer. The call is not executed if the target address is not a contract.\n @param from address representing the previous owner of the given token ID\n @param to target address that will receive the tokens\n @param tokenId uint256 ID of the token to be transferred\n @param data bytes optional data to send along with the call"},"implemented":true,"kind":"function","modifiers":[],"name":"_checkOnERC721Received","nameLocation":"16927:22:1","parameters":{"id":1090,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1083,"mutability":"mutable","name":"from","nameLocation":"16958:4:1","nodeType":"VariableDeclaration","scope":1144,"src":"16950:12:1","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1082,"name":"address","nodeType":"ElementaryTypeName","src":"16950:7:1","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1085,"mutability":"mutable","name":"to","nameLocation":"16972:2:1","nodeType":"VariableDeclaration","scope":1144,"src":"16964:10:1","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1084,"name":"address","nodeType":"ElementaryTypeName","src":"16964:7:1","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1087,"mutability":"mutable","name":"tokenId","nameLocation":"16984:7:1","nodeType":"VariableDeclaration","scope":1144,"src":"16976:15:1","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1086,"name":"uint256","nodeType":"ElementaryTypeName","src":"16976:7:1","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1089,"mutability":"mutable","name":"data","nameLocation":"17006:4:1","nodeType":"VariableDeclaration","scope":1144,"src":"16993:17:1","stateVariable":false,"storageLocation":"memory","typeDescriptions":{"typeIdentifier":"t_bytes_memory_ptr","typeString":"bytes"},"typeName":{"id":1088,"name":"bytes","nodeType":"ElementaryTypeName","src":"16993:5:1","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"16949:62:1"},"returnParameters":{"id":1091,"nodeType":"ParameterList","parameters":[],"src":"17020:0:1"},"scope":1145,"stateMutability":"nonpayable","virtual":false,"visibility":"private"}],"abstract":true,"baseContracts":[{"baseName":{"id":155,"name":"Context","nameLocations":["804:7:1"],"nodeType":"IdentifierPath","referencedDeclaration":1338,"src":"804:7:1"},"id":156,"nodeType":"InheritanceSpecifier","src":"804:7:1"},{"baseName":{"id":157,"name":"ERC165","nameLocations":["813:6:1"],"nodeType":"IdentifierPath","referencedDeclaration":1617,"src":"813:6:1"},"id":158,"nodeType":"InheritanceSpecifier","src":"813:6:1"},{"baseName":{"id":159,"name":"IERC721","nameLocations":["821:7:1"],"nodeType":"IdentifierPath","referencedDeclaration":1262,"src":"821:7:1"},"id":160,"nodeType":"InheritanceSpecifier","src":"821:7:1"},{"baseName":{"id":161,"name":"IERC721Metadata","nameLocations":["830:15:1"],"nodeType":"IdentifierPath","referencedDeclaration":1308,"src":"830:15:1"},"id":162,"nodeType":"InheritanceSpecifier","src":"830:15:1"},{"baseName":{"id":163,"name":"IERC721Errors","nameLocations":["847:13:1"],"nodeType":"IdentifierPath","referencedDeclaration":89,"src":"847:13:1"},"id":164,"nodeType":"InheritanceSpecifier","src":"847:13:1"}],"canonicalName":"ERC721","contractDependencies":[],"contractKind":"contract","documentation":{"id":154,"nodeType":"StructuredDocumentation","src":"529:246:1","text":" @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n the Metadata extension, but not including the Enumerable extension, which is available separately as\n {ERC721Enumerable}."},"fullyImplemented":true,"linearizedBaseContracts":[1145,89,1308,1262,1617,1629,1338],"name":"ERC721","nameLocation":"794:6:1","scope":1146,"usedErrors":[47,52,61,66,71,78,83,88],"usedEvents":[1161,1170,1179]}],"license":"MIT"},"id":1}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/IERC165.sol/IERC165.json b/examples/on-chain_mnist/contracts/out/IERC165.sol/IERC165.json
deleted file mode 100644
index 9598489..0000000
--- a/examples/on-chain_mnist/contracts/out/IERC165.sol/IERC165.json
+++ /dev/null
@@ -1 +0,0 @@
-{"abi":[{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"supportsInterface(bytes4)":"01ffc9a7"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.24+commit.e11b9ed9\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Interface of the ERC165 standard, as defined in the https://eips.ethereum.org/EIPS/eip-165[EIP]. Implementers can declare support of contract interfaces, which can then be queried by others ({ERC165Checker}). For an implementation, see {ERC165}.\",\"kind\":\"dev\",\"methods\":{\"supportsInterface(bytes4)\":{\"details\":\"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol\":\"IERC165\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol\":{\"keccak256\":\"0x4296879f55019b23e135000eb36896057e7101fb7fb859c5ef690cf14643757b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://87b3541437c8c443ccd36795e56a338ed12855eec17f8da624511b8d1a7e14df\",\"dweb:/ipfs/QmeJQCtZrQjtJLr6u7ZHWeH3pBnjtLWzvRrKViAi7UZqxL\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]}],"devdoc":{"kind":"dev","methods":{"supportsInterface(bytes4)":{"details":"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol":"IERC165"},"evmVersion":"paris","libraries":{}},"sources":{"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol":{"keccak256":"0x4296879f55019b23e135000eb36896057e7101fb7fb859c5ef690cf14643757b","urls":["bzz-raw://87b3541437c8c443ccd36795e56a338ed12855eec17f8da624511b8d1a7e14df","dweb:/ipfs/QmeJQCtZrQjtJLr6u7ZHWeH3pBnjtLWzvRrKViAi7UZqxL"],"license":"MIT"}},"version":1},"ast":{"absolutePath":"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol","id":1630,"exportedSymbols":{"IERC165":[1629]},"nodeType":"SourceUnit","src":"115:754:8","nodes":[{"id":1619,"nodeType":"PragmaDirective","src":"115:24:8","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1629,"nodeType":"ContractDefinition","src":"421:447:8","nodes":[{"id":1628,"nodeType":"FunctionDefinition","src":"790:76:8","nodes":[],"documentation":{"id":1621,"nodeType":"StructuredDocumentation","src":"445:340:8","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"799:17:8","parameters":{"id":1624,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1623,"mutability":"mutable","name":"interfaceId","nameLocation":"824:11:8","nodeType":"VariableDeclaration","scope":1628,"src":"817:18:8","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1622,"name":"bytes4","nodeType":"ElementaryTypeName","src":"817:6:8","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"816:20:8"},"returnParameters":{"id":1627,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1626,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1628,"src":"860:4:8","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1625,"name":"bool","nodeType":"ElementaryTypeName","src":"860:4:8","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"859:6:8"},"scope":1629,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1620,"nodeType":"StructuredDocumentation","src":"141:279:8","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1629],"name":"IERC165","nameLocation":"431:7:8","scope":1630,"usedErrors":[],"usedEvents":[]}],"license":"MIT"},"id":8}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/IERC721.sol/IERC721.json b/examples/on-chain_mnist/contracts/out/IERC721.sol/IERC721.json
deleted file mode 100644
index d355336..0000000
--- a/examples/on-chain_mnist/contracts/out/IERC721.sol/IERC721.json
+++ /dev/null
@@ -1 +0,0 @@
-{"abi":[{"type":"function","name":"approve","inputs":[{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"balanceOf","inputs":[{"name":"owner","type":"address","internalType":"address"}],"outputs":[{"name":"balance","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getApproved","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"operator","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"isApprovedForAll","inputs":[{"name":"owner","type":"address","internalType":"address"},{"name":"operator","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"ownerOf","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"owner","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"setApprovalForAll","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"approved","type":"bool","internalType":"bool"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"transferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"event","name":"Approval","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"event","name":"ApprovalForAll","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"operator","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"bool","indexed":false,"internalType":"bool"}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"name":"from","type":"address","indexed":true,"internalType":"address"},{"name":"to","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"approve(address,uint256)":"095ea7b3","balanceOf(address)":"70a08231","getApproved(uint256)":"081812fc","isApprovedForAll(address,address)":"e985e9c5","ownerOf(uint256)":"6352211e","safeTransferFrom(address,address,uint256)":"42842e0e","safeTransferFrom(address,address,uint256,bytes)":"b88d4fde","setApprovalForAll(address,bool)":"a22cb465","supportsInterface(bytes4)":"01ffc9a7","transferFrom(address,address,uint256)":"23b872dd"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.24+commit.e11b9ed9\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"ApprovalForAll\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"balance\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Required interface of an ERC721 compliant contract.\",\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"Gives permission to `to` to transfer `tokenId` token to another account. The approval is cleared when the token is transferred. Only a single account can be approved at a time, so approving the zero address clears previous approvals. Requirements: - The caller must own the token or be an approved operator. - `tokenId` must exist. Emits an {Approval} event.\"},\"balanceOf(address)\":{\"details\":\"Returns the number of tokens in ``owner``'s account.\"},\"getApproved(uint256)\":{\"details\":\"Returns the account approved for `tokenId` token. Requirements: - `tokenId` must exist.\"},\"isApprovedForAll(address,address)\":{\"details\":\"Returns if the `operator` is allowed to manage all of the assets of `owner`. See {setApprovalForAll}\"},\"ownerOf(uint256)\":{\"details\":\"Returns the owner of the `tokenId` token. Requirements: - `tokenId` must exist.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must have been allowed to move this token by either {approve} or   {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the address zero. Emits an {ApprovalForAll} event.\"},\"supportsInterface(bytes4)\":{\"details\":\"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"Transfers `tokenId` token from `from` to `to`. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721.sol\":\"IERC721\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721.sol\":{\"keccak256\":\"0x5ef46daa3b58ef2702279d514780316efaa952915ee1aa3396f041ee2982b0b4\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://2f8f2a76e23b02fc69e8cd24c3cb47da6c7af3a2d6c3a382f8ac25c6e094ade7\",\"dweb:/ipfs/QmPV4ZS4tPVv4mTCf9ejyZ1ai57EEibDRj7mN2ARDCLV5n\"]},\"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol\":{\"keccak256\":\"0x4296879f55019b23e135000eb36896057e7101fb7fb859c5ef690cf14643757b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://87b3541437c8c443ccd36795e56a338ed12855eec17f8da624511b8d1a7e14df\",\"dweb:/ipfs/QmeJQCtZrQjtJLr6u7ZHWeH3pBnjtLWzvRrKViAi7UZqxL\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"approved","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Approval","anonymous":false},{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"operator","type":"address","indexed":true},{"internalType":"bool","name":"approved","type":"bool","indexed":false}],"type":"event","name":"ApprovalForAll","anonymous":false},{"inputs":[{"internalType":"address","name":"from","type":"address","indexed":true},{"internalType":"address","name":"to","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Transfer","anonymous":false},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"approve"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"view","type":"function","name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"getApproved","outputs":[{"internalType":"address","name":"operator","type":"address"}]},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"stateMutability":"view","type":"function","name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"ownerOf","outputs":[{"internalType":"address","name":"owner","type":"address"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"stateMutability":"nonpayable","type":"function","name":"setApprovalForAll"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"transferFrom"}],"devdoc":{"kind":"dev","methods":{"approve(address,uint256)":{"details":"Gives permission to `to` to transfer `tokenId` token to another account. The approval is cleared when the token is transferred. Only a single account can be approved at a time, so approving the zero address clears previous approvals. Requirements: - The caller must own the token or be an approved operator. - `tokenId` must exist. Emits an {Approval} event."},"balanceOf(address)":{"details":"Returns the number of tokens in ``owner``'s account."},"getApproved(uint256)":{"details":"Returns the account approved for `tokenId` token. Requirements: - `tokenId` must exist."},"isApprovedForAll(address,address)":{"details":"Returns if the `operator` is allowed to manage all of the assets of `owner`. See {setApprovalForAll}"},"ownerOf(uint256)":{"details":"Returns the owner of the `tokenId` token. Requirements: - `tokenId` must exist."},"safeTransferFrom(address,address,uint256)":{"details":"Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must have been allowed to move this token by either {approve} or   {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"safeTransferFrom(address,address,uint256,bytes)":{"details":"Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"setApprovalForAll(address,bool)":{"details":"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the address zero. Emits an {ApprovalForAll} event."},"supportsInterface(bytes4)":{"details":"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas."},"transferFrom(address,address,uint256)":{"details":"Transfers `tokenId` token from `from` to `to`. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721.sol":"IERC721"},"evmVersion":"paris","libraries":{}},"sources":{"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721.sol":{"keccak256":"0x5ef46daa3b58ef2702279d514780316efaa952915ee1aa3396f041ee2982b0b4","urls":["bzz-raw://2f8f2a76e23b02fc69e8cd24c3cb47da6c7af3a2d6c3a382f8ac25c6e094ade7","dweb:/ipfs/QmPV4ZS4tPVv4mTCf9ejyZ1ai57EEibDRj7mN2ARDCLV5n"],"license":"MIT"},"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol":{"keccak256":"0x4296879f55019b23e135000eb36896057e7101fb7fb859c5ef690cf14643757b","urls":["bzz-raw://87b3541437c8c443ccd36795e56a338ed12855eec17f8da624511b8d1a7e14df","dweb:/ipfs/QmeJQCtZrQjtJLr6u7ZHWeH3pBnjtLWzvRrKViAi7UZqxL"],"license":"MIT"}},"version":1},"ast":{"absolutePath":"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721.sol","id":1263,"exportedSymbols":{"IERC165":[1629],"IERC721":[1262]},"nodeType":"SourceUnit","src":"108:4818:2","nodes":[{"id":1147,"nodeType":"PragmaDirective","src":"108:24:2","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1149,"nodeType":"ImportDirective","src":"134:62:2","nodes":[],"absolutePath":"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol","file":"../../utils/introspection/IERC165.sol","nameLocation":"-1:-1:-1","scope":1263,"sourceUnit":1630,"symbolAliases":[{"foreign":{"id":1148,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1629,"src":"142:7:2","typeDescriptions":{}},"nameLocation":"-1:-1:-1"}],"unitAlias":""},{"id":1262,"nodeType":"ContractDefinition","src":"266:4659:2","nodes":[{"id":1161,"nodeType":"EventDefinition","src":"394:82:2","nodes":[],"anonymous":false,"documentation":{"id":1153,"nodeType":"StructuredDocumentation","src":"301:88:2","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"400:8:2","parameters":{"id":1160,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1155,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"425:4:2","nodeType":"VariableDeclaration","scope":1161,"src":"409:20:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1154,"name":"address","nodeType":"ElementaryTypeName","src":"409:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1157,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"447:2:2","nodeType":"VariableDeclaration","scope":1161,"src":"431:18:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1156,"name":"address","nodeType":"ElementaryTypeName","src":"431:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1159,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"467:7:2","nodeType":"VariableDeclaration","scope":1161,"src":"451:23:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1158,"name":"uint256","nodeType":"ElementaryTypeName","src":"451:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"408:67:2"}},{"id":1170,"nodeType":"EventDefinition","src":"581:89:2","nodes":[],"anonymous":false,"documentation":{"id":1162,"nodeType":"StructuredDocumentation","src":"482:94:2","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"587:8:2","parameters":{"id":1169,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1164,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"612:5:2","nodeType":"VariableDeclaration","scope":1170,"src":"596:21:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1163,"name":"address","nodeType":"ElementaryTypeName","src":"596:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1166,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"635:8:2","nodeType":"VariableDeclaration","scope":1170,"src":"619:24:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1165,"name":"address","nodeType":"ElementaryTypeName","src":"619:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1168,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"661:7:2","nodeType":"VariableDeclaration","scope":1170,"src":"645:23:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1167,"name":"uint256","nodeType":"ElementaryTypeName","src":"645:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"595:74:2"}},{"id":1179,"nodeType":"EventDefinition","src":"798:85:2","nodes":[],"anonymous":false,"documentation":{"id":1171,"nodeType":"StructuredDocumentation","src":"676:117:2","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"804:14:2","parameters":{"id":1178,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1173,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"835:5:2","nodeType":"VariableDeclaration","scope":1179,"src":"819:21:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1172,"name":"address","nodeType":"ElementaryTypeName","src":"819:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1175,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"858:8:2","nodeType":"VariableDeclaration","scope":1179,"src":"842:24:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1174,"name":"address","nodeType":"ElementaryTypeName","src":"842:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1177,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"873:8:2","nodeType":"VariableDeclaration","scope":1179,"src":"868:13:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1176,"name":"bool","nodeType":"ElementaryTypeName","src":"868:4:2","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"818:64:2"}},{"id":1187,"nodeType":"FunctionDefinition","src":"970:74:2","nodes":[],"documentation":{"id":1180,"nodeType":"StructuredDocumentation","src":"889:76:2","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"979:9:2","parameters":{"id":1183,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1182,"mutability":"mutable","name":"owner","nameLocation":"997:5:2","nodeType":"VariableDeclaration","scope":1187,"src":"989:13:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1181,"name":"address","nodeType":"ElementaryTypeName","src":"989:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"988:15:2"},"returnParameters":{"id":1186,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1185,"mutability":"mutable","name":"balance","nameLocation":"1035:7:2","nodeType":"VariableDeclaration","scope":1187,"src":"1027:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1184,"name":"uint256","nodeType":"ElementaryTypeName","src":"1027:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1026:17:2"},"scope":1262,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1195,"nodeType":"FunctionDefinition","src":"1186:72:2","nodes":[],"documentation":{"id":1188,"nodeType":"StructuredDocumentation","src":"1050:131:2","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"1195:7:2","parameters":{"id":1191,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1190,"mutability":"mutable","name":"tokenId","nameLocation":"1211:7:2","nodeType":"VariableDeclaration","scope":1195,"src":"1203:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1189,"name":"uint256","nodeType":"ElementaryTypeName","src":"1203:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1202:17:2"},"returnParameters":{"id":1194,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1193,"mutability":"mutable","name":"owner","nameLocation":"1251:5:2","nodeType":"VariableDeclaration","scope":1195,"src":"1243:13:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1192,"name":"address","nodeType":"ElementaryTypeName","src":"1243:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1242:15:2"},"scope":1262,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1207,"nodeType":"FunctionDefinition","src":"1834:99:2","nodes":[],"documentation":{"id":1196,"nodeType":"StructuredDocumentation","src":"1264:565:2","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"1843:16:2","parameters":{"id":1205,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1198,"mutability":"mutable","name":"from","nameLocation":"1868:4:2","nodeType":"VariableDeclaration","scope":1207,"src":"1860:12:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1197,"name":"address","nodeType":"ElementaryTypeName","src":"1860:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1200,"mutability":"mutable","name":"to","nameLocation":"1882:2:2","nodeType":"VariableDeclaration","scope":1207,"src":"1874:10:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1199,"name":"address","nodeType":"ElementaryTypeName","src":"1874:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1202,"mutability":"mutable","name":"tokenId","nameLocation":"1894:7:2","nodeType":"VariableDeclaration","scope":1207,"src":"1886:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1201,"name":"uint256","nodeType":"ElementaryTypeName","src":"1886:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1204,"mutability":"mutable","name":"data","nameLocation":"1918:4:2","nodeType":"VariableDeclaration","scope":1207,"src":"1903:19:2","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1203,"name":"bytes","nodeType":"ElementaryTypeName","src":"1903:5:2","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"1859:64:2"},"returnParameters":{"id":1206,"nodeType":"ParameterList","parameters":[],"src":"1932:0:2"},"scope":1262,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1217,"nodeType":"FunctionDefinition","src":"2649:78:2","nodes":[],"documentation":{"id":1208,"nodeType":"StructuredDocumentation","src":"1939:705:2","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} 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@dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"3479:12:2","parameters":{"id":1225,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1220,"mutability":"mutable","name":"from","nameLocation":"3500:4:2","nodeType":"VariableDeclaration","scope":1227,"src":"3492:12:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1219,"name":"address","nodeType":"ElementaryTypeName","src":"3492:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1222,"mutability":"mutable","name":"to","nameLocation":"3514:2:2","nodeType":"VariableDeclaration","scope":1227,"src":"3506:10:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1221,"name":"address","nodeType":"ElementaryTypeName","src":"3506:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1224,"mutability":"mutable","name":"tokenId","nameLocation":"3526:7:2","nodeType":"VariableDeclaration","scope":1227,"src":"3518:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1223,"name":"uint256","nodeType":"ElementaryTypeName","src":"3518:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"3491:43:2"},"returnParameters":{"id":1226,"nodeType":"ParameterList","parameters":[],"src":"3543:0:2"},"scope":1262,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1235,"nodeType":"FunctionDefinition","src":"4007:55:2","nodes":[],"documentation":{"id":1228,"nodeType":"StructuredDocumentation","src":"3550:452:2","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"4016:7:2","parameters":{"id":1233,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1230,"mutability":"mutable","name":"to","nameLocation":"4032:2:2","nodeType":"VariableDeclaration","scope":1235,"src":"4024:10:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1229,"name":"address","nodeType":"ElementaryTypeName","src":"4024:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1232,"mutability":"mutable","name":"tokenId","nameLocation":"4044:7:2","nodeType":"VariableDeclaration","scope":1235,"src":"4036:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1231,"name":"uint256","nodeType":"ElementaryTypeName","src":"4036:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"4023:29:2"},"returnParameters":{"id":1234,"nodeType":"ParameterList","parameters":[],"src":"4061:0:2"},"scope":1262,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1243,"nodeType":"FunctionDefinition","src":"4388:69:2","nodes":[],"documentation":{"id":1236,"nodeType":"StructuredDocumentation","src":"4068:315:2","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"4397:17:2","parameters":{"id":1241,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1238,"mutability":"mutable","name":"operator","nameLocation":"4423:8:2","nodeType":"VariableDeclaration","scope":1243,"src":"4415:16:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1237,"name":"address","nodeType":"ElementaryTypeName","src":"4415:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1240,"mutability":"mutable","name":"approved","nameLocation":"4438:8:2","nodeType":"VariableDeclaration","scope":1243,"src":"4433:13:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1239,"name":"bool","nodeType":"ElementaryTypeName","src":"4433:4:2","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"4414:33:2"},"returnParameters":{"id":1242,"nodeType":"ParameterList","parameters":[],"src":"4456:0:2"},"scope":1262,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1251,"nodeType":"FunctionDefinition","src":"4607:79:2","nodes":[],"documentation":{"id":1244,"nodeType":"StructuredDocumentation","src":"4463:139:2","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"4616:11:2","parameters":{"id":1247,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1246,"mutability":"mutable","name":"tokenId","nameLocation":"4636:7:2","nodeType":"VariableDeclaration","scope":1251,"src":"4628:15:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1245,"name":"uint256","nodeType":"ElementaryTypeName","src":"4628:7:2","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"4627:17:2"},"returnParameters":{"id":1250,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1249,"mutability":"mutable","name":"operator","nameLocation":"4676:8:2","nodeType":"VariableDeclaration","scope":1251,"src":"4668:16:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1248,"name":"address","nodeType":"ElementaryTypeName","src":"4668:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"4667:18:2"},"scope":1262,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1261,"nodeType":"FunctionDefinition","src":"4835:88:2","nodes":[],"documentation":{"id":1252,"nodeType":"StructuredDocumentation","src":"4692:138:2","text":" @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n See {setApprovalForAll}"},"functionSelector":"e985e9c5","implemented":false,"kind":"function","modifiers":[],"name":"isApprovedForAll","nameLocation":"4844:16:2","parameters":{"id":1257,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1254,"mutability":"mutable","name":"owner","nameLocation":"4869:5:2","nodeType":"VariableDeclaration","scope":1261,"src":"4861:13:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1253,"name":"address","nodeType":"ElementaryTypeName","src":"4861:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1256,"mutability":"mutable","name":"operator","nameLocation":"4884:8:2","nodeType":"VariableDeclaration","scope":1261,"src":"4876:16:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1255,"name":"address","nodeType":"ElementaryTypeName","src":"4876:7:2","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"4860:33:2"},"returnParameters":{"id":1260,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1259,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1261,"src":"4917:4:2","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1258,"name":"bool","nodeType":"ElementaryTypeName","src":"4917:4:2","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"4916:6:2"},"scope":1262,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[{"baseName":{"id":1151,"name":"IERC165","nameLocations":["287:7:2"],"nodeType":"IdentifierPath","referencedDeclaration":1629,"src":"287:7:2"},"id":1152,"nodeType":"InheritanceSpecifier","src":"287:7:2"}],"canonicalName":"IERC721","contractDependencies":[],"contractKind":"interface","documentation":{"id":1150,"nodeType":"StructuredDocumentation","src":"198:67:2","text":" @dev Required interface of an ERC721 compliant contract."},"fullyImplemented":false,"linearizedBaseContracts":[1262,1629],"name":"IERC721","nameLocation":"276:7:2","scope":1263,"usedErrors":[],"usedEvents":[1161,1170,1179]}],"license":"MIT"},"id":2}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/IERC721Metadata.sol/IERC721Metadata.json b/examples/on-chain_mnist/contracts/out/IERC721Metadata.sol/IERC721Metadata.json
deleted file mode 100644
index e593845..0000000
--- a/examples/on-chain_mnist/contracts/out/IERC721Metadata.sol/IERC721Metadata.json
+++ /dev/null
@@ -1 +0,0 @@
-{"abi":[{"type":"function","name":"approve","inputs":[{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"balanceOf","inputs":[{"name":"owner","type":"address","internalType":"address"}],"outputs":[{"name":"balance","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getApproved","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"operator","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"isApprovedForAll","inputs":[{"name":"owner","type":"address","internalType":"address"},{"name":"operator","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"name","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"ownerOf","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"owner","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"setApprovalForAll","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"approved","type":"bool","internalType":"bool"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"symbol","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"tokenURI","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"transferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"event","name":"Approval","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"event","name":"ApprovalForAll","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"operator","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"bool","indexed":false,"internalType":"bool"}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"name":"from","type":"address","indexed":true,"internalType":"address"},{"name":"to","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"approve(address,uint256)":"095ea7b3","balanceOf(address)":"70a08231","getApproved(uint256)":"081812fc","isApprovedForAll(address,address)":"e985e9c5","name()":"06fdde03","ownerOf(uint256)":"6352211e","safeTransferFrom(address,address,uint256)":"42842e0e","safeTransferFrom(address,address,uint256,bytes)":"b88d4fde","setApprovalForAll(address,bool)":"a22cb465","supportsInterface(bytes4)":"01ffc9a7","symbol()":"95d89b41","tokenURI(uint256)":"c87b56dd","transferFrom(address,address,uint256)":"23b872dd"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.24+commit.e11b9ed9\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"ApprovalForAll\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"balance\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"See https://eips.ethereum.org/EIPS/eip-721\",\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"Gives permission to `to` to transfer `tokenId` token to another account. The approval is cleared when the token is transferred. Only a single account can be approved at a time, so approving the zero address clears previous approvals. Requirements: - The caller must own the token or be an approved operator. - `tokenId` must exist. Emits an {Approval} event.\"},\"balanceOf(address)\":{\"details\":\"Returns the number of tokens in ``owner``'s account.\"},\"getApproved(uint256)\":{\"details\":\"Returns the account approved for `tokenId` token. Requirements: - `tokenId` must exist.\"},\"isApprovedForAll(address,address)\":{\"details\":\"Returns if the `operator` is allowed to manage all of the assets of `owner`. See {setApprovalForAll}\"},\"name()\":{\"details\":\"Returns the token collection name.\"},\"ownerOf(uint256)\":{\"details\":\"Returns the owner of the `tokenId` token. Requirements: - `tokenId` must exist.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must have been allowed to move this token by either {approve} or   {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the address zero. Emits an {ApprovalForAll} event.\"},\"supportsInterface(bytes4)\":{\"details\":\"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas.\"},\"symbol()\":{\"details\":\"Returns the token collection symbol.\"},\"tokenURI(uint256)\":{\"details\":\"Returns the Uniform Resource Identifier (URI) for `tokenId` token.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"Transfers `tokenId` token from `from` to `to`. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event.\"}},\"title\":\"ERC-721 Non-Fungible Token Standard, optional metadata extension\",\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"lib/openzeppelin-contracts/contracts/token/ERC721/extensions/IERC721Metadata.sol\":\"IERC721Metadata\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721.sol\":{\"keccak256\":\"0x5ef46daa3b58ef2702279d514780316efaa952915ee1aa3396f041ee2982b0b4\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://2f8f2a76e23b02fc69e8cd24c3cb47da6c7af3a2d6c3a382f8ac25c6e094ade7\",\"dweb:/ipfs/QmPV4ZS4tPVv4mTCf9ejyZ1ai57EEibDRj7mN2ARDCLV5n\"]},\"lib/openzeppelin-contracts/contracts/token/ERC721/extensions/IERC721Metadata.sol\":{\"keccak256\":\"0x37d1aaaa5a2908a09e9dcf56a26ddf762ecf295afb5964695937344fc6802ce1\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://ed0bfc1b92153c5000e50f4021367b931bbe96372ac6facec3c4961b72053d02\",\"dweb:/ipfs/Qmbwp8VDerjS5SV1quwHH1oMXxPQ93fzfLVqJ2RCqbowGE\"]},\"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol\":{\"keccak256\":\"0x4296879f55019b23e135000eb36896057e7101fb7fb859c5ef690cf14643757b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://87b3541437c8c443ccd36795e56a338ed12855eec17f8da624511b8d1a7e14df\",\"dweb:/ipfs/QmeJQCtZrQjtJLr6u7ZHWeH3pBnjtLWzvRrKViAi7UZqxL\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"approved","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Approval","anonymous":false},{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"operator","type":"address","indexed":true},{"internalType":"bool","name":"approved","type":"bool","indexed":false}],"type":"event","name":"ApprovalForAll","anonymous":false},{"inputs":[{"internalType":"address","name":"from","type":"address","indexed":true},{"internalType":"address","name":"to","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Transfer","anonymous":false},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"approve"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"view","type":"function","name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"getApproved","outputs":[{"internalType":"address","name":"operator","type":"address"}]},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"stateMutability":"view","type":"function","name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"name","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"ownerOf","outputs":[{"internalType":"address","name":"owner","type":"address"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"stateMutability":"nonpayable","type":"function","name":"setApprovalForAll"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"transferFrom"}],"devdoc":{"kind":"dev","methods":{"approve(address,uint256)":{"details":"Gives permission to `to` to transfer `tokenId` token to another account. The approval is cleared when the token is transferred. Only a single account can be approved at a time, so approving the zero address clears previous approvals. Requirements: - The caller must own the token or be an approved operator. - `tokenId` must exist. Emits an {Approval} event."},"balanceOf(address)":{"details":"Returns the number of tokens in ``owner``'s account."},"getApproved(uint256)":{"details":"Returns the account approved for `tokenId` token. Requirements: - `tokenId` must exist."},"isApprovedForAll(address,address)":{"details":"Returns if the `operator` is allowed to manage all of the assets of `owner`. See {setApprovalForAll}"},"name()":{"details":"Returns the token collection name."},"ownerOf(uint256)":{"details":"Returns the owner of the `tokenId` token. Requirements: - `tokenId` must exist."},"safeTransferFrom(address,address,uint256)":{"details":"Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must have been allowed to move this token by either {approve} or   {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"safeTransferFrom(address,address,uint256,bytes)":{"details":"Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"setApprovalForAll(address,bool)":{"details":"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the address zero. Emits an {ApprovalForAll} event."},"supportsInterface(bytes4)":{"details":"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas."},"symbol()":{"details":"Returns the token collection symbol."},"tokenURI(uint256)":{"details":"Returns the Uniform Resource Identifier (URI) for `tokenId` token."},"transferFrom(address,address,uint256)":{"details":"Transfers `tokenId` token from `from` to `to`. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"lib/openzeppelin-contracts/contracts/token/ERC721/extensions/IERC721Metadata.sol":"IERC721Metadata"},"evmVersion":"paris","libraries":{}},"sources":{"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721.sol":{"keccak256":"0x5ef46daa3b58ef2702279d514780316efaa952915ee1aa3396f041ee2982b0b4","urls":["bzz-raw://2f8f2a76e23b02fc69e8cd24c3cb47da6c7af3a2d6c3a382f8ac25c6e094ade7","dweb:/ipfs/QmPV4ZS4tPVv4mTCf9ejyZ1ai57EEibDRj7mN2ARDCLV5n"],"license":"MIT"},"lib/openzeppelin-contracts/contracts/token/ERC721/extensions/IERC721Metadata.sol":{"keccak256":"0x37d1aaaa5a2908a09e9dcf56a26ddf762ecf295afb5964695937344fc6802ce1","urls":["bzz-raw://ed0bfc1b92153c5000e50f4021367b931bbe96372ac6facec3c4961b72053d02","dweb:/ipfs/Qmbwp8VDerjS5SV1quwHH1oMXxPQ93fzfLVqJ2RCqbowGE"],"license":"MIT"},"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol":{"keccak256":"0x4296879f55019b23e135000eb36896057e7101fb7fb859c5ef690cf14643757b","urls":["bzz-raw://87b3541437c8c443ccd36795e56a338ed12855eec17f8da624511b8d1a7e14df","dweb:/ipfs/QmeJQCtZrQjtJLr6u7ZHWeH3pBnjtLWzvRrKViAi7UZqxL"],"license":"MIT"}},"version":1},"ast":{"absolutePath":"lib/openzeppelin-contracts/contracts/token/ERC721/extensions/IERC721Metadata.sol","id":1309,"exportedSymbols":{"IERC721":[1262],"IERC721Metadata":[1308]},"nodeType":"SourceUnit","src":"127:665:4","nodes":[{"id":1282,"nodeType":"PragmaDirective","src":"127:24:4","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1284,"nodeType":"ImportDirective","src":"153:39:4","nodes":[],"absolutePath":"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721.sol","file":"../IERC721.sol","nameLocation":"-1:-1:-1","scope":1309,"sourceUnit":1263,"symbolAliases":[{"foreign":{"id":1283,"name":"IERC721","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1262,"src":"161:7:4","typeDescriptions":{}},"nameLocation":"-1:-1:-1"}],"unitAlias":""},{"id":1308,"nodeType":"ContractDefinition","src":"328:463:4","nodes":[{"id":1293,"nodeType":"FunctionDefinition","src":"434:54:4","nodes":[],"documentation":{"id":1288,"nodeType":"StructuredDocumentation","src":"371:58:4","text":" @dev Returns the token collection name."},"functionSelector":"06fdde03","implemented":false,"kind":"function","modifiers":[],"name":"name","nameLocation":"443:4:4","parameters":{"id":1289,"nodeType":"ParameterList","parameters":[],"src":"447:2:4"},"returnParameters":{"id":1292,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1291,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1293,"src":"473:13:4","stateVariable":false,"storageLocation":"memory","typeDescriptions":{"typeIdentifier":"t_string_memory_ptr","typeString":"string"},"typeName":{"id":1290,"name":"string","nodeType":"ElementaryTypeName","src":"473:6:4","typeDescriptions":{"typeIdentifier":"t_string_storage_ptr","typeString":"string"}},"visibility":"internal"}],"src":"472:15:4"},"scope":1308,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1299,"nodeType":"FunctionDefinition","src":"559:56:4","nodes":[],"documentation":{"id":1294,"nodeType":"StructuredDocumentation","src":"494:60:4","text":" @dev Returns the token collection symbol."},"functionSelector":"95d89b41","implemented":false,"kind":"function","modifiers":[],"name":"symbol","nameLocation":"568:6:4","parameters":{"id":1295,"nodeType":"ParameterList","parameters":[],"src":"574:2:4"},"returnParameters":{"id":1298,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1297,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1299,"src":"600:13:4","stateVariable":false,"storageLocation":"memory","typeDescriptions":{"typeIdentifier":"t_string_memory_ptr","typeString":"string"},"typeName":{"id":1296,"name":"string","nodeType":"ElementaryTypeName","src":"600:6:4","typeDescriptions":{"typeIdentifier":"t_string_storage_ptr","typeString":"string"}},"visibility":"internal"}],"src":"599:15:4"},"scope":1308,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1307,"nodeType":"FunctionDefinition","src":"716:73:4","nodes":[],"documentation":{"id":1300,"nodeType":"StructuredDocumentation","src":"621:90:4","text":" @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token."},"functionSelector":"c87b56dd","implemented":false,"kind":"function","modifiers":[],"name":"tokenURI","nameLocation":"725:8:4","parameters":{"id":1303,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1302,"mutability":"mutable","name":"tokenId","nameLocation":"742:7:4","nodeType":"VariableDeclaration","scope":1307,"src":"734:15:4","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1301,"name":"uint256","nodeType":"ElementaryTypeName","src":"734:7:4","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"733:17:4"},"returnParameters":{"id":1306,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1305,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1307,"src":"774:13:4","stateVariable":false,"storageLocation":"memory","typeDescriptions":{"typeIdentifier":"t_string_memory_ptr","typeString":"string"},"typeName":{"id":1304,"name":"string","nodeType":"ElementaryTypeName","src":"774:6:4","typeDescriptions":{"typeIdentifier":"t_string_storage_ptr","typeString":"string"}},"visibility":"internal"}],"src":"773:15:4"},"scope":1308,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[{"baseName":{"id":1286,"name":"IERC721","nameLocations":["357:7:4"],"nodeType":"IdentifierPath","referencedDeclaration":1262,"src":"357:7:4"},"id":1287,"nodeType":"InheritanceSpecifier","src":"357:7:4"}],"canonicalName":"IERC721Metadata","contractDependencies":[],"contractKind":"interface","documentation":{"id":1285,"nodeType":"StructuredDocumentation","src":"194:133:4","text":" @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n @dev See https://eips.ethereum.org/EIPS/eip-721"},"fullyImplemented":false,"linearizedBaseContracts":[1308,1262,1629],"name":"IERC721Metadata","nameLocation":"338:15:4","scope":1309,"usedErrors":[],"usedEvents":[1161,1170,1179]}],"license":"MIT"},"id":4}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/IERC721Receiver.sol/IERC721Receiver.json b/examples/on-chain_mnist/contracts/out/IERC721Receiver.sol/IERC721Receiver.json
deleted file mode 100644
index 35e24a5..0000000
--- a/examples/on-chain_mnist/contracts/out/IERC721Receiver.sol/IERC721Receiver.json
+++ /dev/null
@@ -1 +0,0 @@
-{"abi":[{"type":"function","name":"onERC721Received","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"from","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[{"name":"","type":"bytes4","internalType":"bytes4"}],"stateMutability":"nonpayable"}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{"onERC721Received(address,address,uint256,bytes)":"150b7a02"},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.24+commit.e11b9ed9\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"onERC721Received\",\"outputs\":[{\"internalType\":\"bytes4\",\"name\":\"\",\"type\":\"bytes4\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Interface for any contract that wants to support safeTransfers from ERC721 asset contracts.\",\"kind\":\"dev\",\"methods\":{\"onERC721Received(address,address,uint256,bytes)\":{\"details\":\"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\"}},\"title\":\"ERC721 token receiver interface\",\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol\":\"IERC721Receiver\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol\":{\"keccak256\":\"0x7f7a26306c79a65fb8b3b6c757cd74660c532cd8a02e165488e30027dd34ca49\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://d01e0b2b837ee2f628545e54d8715b49c7ef2befd08356c2e7f6c50dde8a1c22\",\"dweb:/ipfs/QmWBAn6y2D1xgftci97Z3qR9tQnkvwQpYwFwkTvDMvqU4i\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}]}],"devdoc":{"kind":"dev","methods":{"onERC721Received(address,address,uint256,bytes)":{"details":"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol":"IERC721Receiver"},"evmVersion":"paris","libraries":{}},"sources":{"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol":{"keccak256":"0x7f7a26306c79a65fb8b3b6c757cd74660c532cd8a02e165488e30027dd34ca49","urls":["bzz-raw://d01e0b2b837ee2f628545e54d8715b49c7ef2befd08356c2e7f6c50dde8a1c22","dweb:/ipfs/QmWBAn6y2D1xgftci97Z3qR9tQnkvwQpYwFwkTvDMvqU4i"],"license":"MIT"}},"version":1},"ast":{"absolutePath":"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol","id":1281,"exportedSymbols":{"IERC721Receiver":[1280]},"nodeType":"SourceUnit","src":"116:879:3","nodes":[{"id":1264,"nodeType":"PragmaDirective","src":"116:24:3","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1280,"nodeType":"ContractDefinition","src":"295:699:3","nodes":[{"id":1279,"nodeType":"FunctionDefinition","src":"832:160:3","nodes":[],"documentation":{"id":1266,"nodeType":"StructuredDocumentation","src":"327:500:3","text":" @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n by `operator` from `from`, this function is called.\n It must return its Solidity selector to confirm the token transfer.\n If any other value is returned or the interface is not implemented by the recipient, the transfer will be\n reverted.\n The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`."},"functionSelector":"150b7a02","implemented":false,"kind":"function","modifiers":[],"name":"onERC721Received","nameLocation":"841:16:3","parameters":{"id":1275,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1268,"mutability":"mutable","name":"operator","nameLocation":"875:8:3","nodeType":"VariableDeclaration","scope":1279,"src":"867:16:3","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1267,"name":"address","nodeType":"ElementaryTypeName","src":"867:7:3","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1270,"mutability":"mutable","name":"from","nameLocation":"901:4:3","nodeType":"VariableDeclaration","scope":1279,"src":"893:12:3","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1269,"name":"address","nodeType":"ElementaryTypeName","src":"893:7:3","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1272,"mutability":"mutable","name":"tokenId","nameLocation":"923:7:3","nodeType":"VariableDeclaration","scope":1279,"src":"915:15:3","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1271,"name":"uint256","nodeType":"ElementaryTypeName","src":"915:7:3","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1274,"mutability":"mutable","name":"data","nameLocation":"955:4:3","nodeType":"VariableDeclaration","scope":1279,"src":"940:19:3","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1273,"name":"bytes","nodeType":"ElementaryTypeName","src":"940:5:3","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"857:108:3"},"returnParameters":{"id":1278,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1277,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1279,"src":"984:6:3","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1276,"name":"bytes4","nodeType":"ElementaryTypeName","src":"984:6:3","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"983:8:3"},"scope":1280,"stateMutability":"nonpayable","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC721Receiver","contractDependencies":[],"contractKind":"interface","documentation":{"id":1265,"nodeType":"StructuredDocumentation","src":"142:152:3","text":" @title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1280],"name":"IERC721Receiver","nameLocation":"305:15:3","scope":1281,"usedErrors":[],"usedEvents":[]}],"license":"MIT"},"id":3}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json b/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json
deleted file mode 100644
index 072ccfa..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT.sol/MNISTNFT.json
+++ /dev/null
@@ -1 +0,0 @@
-{"abi":[{"type":"constructor","inputs":[],"stateMutability":"nonpayable"},{"type":"fallback","stateMutability":"payable"},{"type":"receive","stateMutability":"payable"},{"type":"function","name":"approve","inputs":[{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"balanceOf","inputs":[{"name":"owner","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"getApproved","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"getBalance","inputs":[],"outputs":[{"name":"","type":"uint256","internalType":"uint256"}],"stateMutability":"view"},{"type":"function","name":"isApprovedForAll","inputs":[{"name":"owner","type":"address","internalType":"address"},{"name":"operator","type":"address","internalType":"address"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"mint","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"name","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"onERC721Received","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"from","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[{"name":"","type":"bytes4","internalType":"bytes4"}],"stateMutability":"nonpayable"},{"type":"function","name":"ownerOf","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"address","internalType":"address"}],"stateMutability":"view"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"safeTransferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"data","type":"bytes","internalType":"bytes"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"setApprovalForAll","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"approved","type":"bool","internalType":"bool"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"function","name":"supportsInterface","inputs":[{"name":"interfaceId","type":"bytes4","internalType":"bytes4"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"symbol","inputs":[],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"tokenExists","inputs":[{"name":"","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"bool","internalType":"bool"}],"stateMutability":"view"},{"type":"function","name":"tokenURI","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[{"name":"","type":"string","internalType":"string"}],"stateMutability":"view"},{"type":"function","name":"transferFrom","inputs":[{"name":"from","type":"address","internalType":"address"},{"name":"to","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}],"outputs":[],"stateMutability":"nonpayable"},{"type":"event","name":"Approval","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"event","name":"ApprovalForAll","inputs":[{"name":"owner","type":"address","indexed":true,"internalType":"address"},{"name":"operator","type":"address","indexed":true,"internalType":"address"},{"name":"approved","type":"bool","indexed":false,"internalType":"bool"}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"name":"from","type":"address","indexed":true,"internalType":"address"},{"name":"to","type":"address","indexed":true,"internalType":"address"},{"name":"tokenId","type":"uint256","indexed":true,"internalType":"uint256"}],"anonymous":false},{"type":"error","name":"ERC721IncorrectOwner","inputs":[{"name":"sender","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InsufficientApproval","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}]},{"type":"error","name":"ERC721InvalidApprover","inputs":[{"name":"approver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOperator","inputs":[{"name":"operator","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOwner","inputs":[{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidReceiver","inputs":[{"name":"receiver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidSender","inputs":[{"name":"sender","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721NonexistentToken","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}]}],"bytecode":{"object":"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\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"onERC721Received\",\"outputs\":[{\"internalType\":\"bytes4\",\"name\":\"\",\"type\":\"bytes4\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"tokenExists\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"}],\"devdoc\":{\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. Used in transfers.\",\"params\":{\"owner\":\"Address of the current owner of a token.\",\"sender\":\"Address whose tokens are being transferred.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InsufficientApproval(address,uint256)\":[{\"details\":\"Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC721InvalidOperator(address)\":[{\"details\":\"Indicates a failure with the `operator` to be approved. Used in approvals.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC721InvalidOwner(address)\":[{\"details\":\"Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. Used in balance queries.\",\"params\":{\"owner\":\"Address of the current owner of a token.\"}}],\"ERC721InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC721InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC721NonexistentToken(uint256)\":[{\"details\":\"Indicates a `tokenId` whose `owner` is the zero address.\",\"params\":{\"tokenId\":\"Identifier number of a token.\"}}]},\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See {IERC721-isApprovedForAll}.\"},\"name()\":{\"details\":\"See {IERC721Metadata-name}.\"},\"onERC721Received(address,address,uint256,bytes)\":{\"details\":\"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\"},\"ownerOf(uint256)\":{\"details\":\"See {IERC721-ownerOf}.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"See {IERC721-setApprovalForAll}.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"},\"symbol()\":{\"details\":\"See {IERC721Metadata-symbol}.\"},\"tokenURI(uint256)\":{\"details\":\"See {IERC721Metadata-tokenURI}.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Context.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Context.json
deleted file mode 100644
index fafc9af..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Context.json
+++ /dev/null
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@title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC165.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC165.json
deleted file mode 100644
index 0ed55cf..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC165.json
+++ /dev/null
@@ -1 +0,0 @@
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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC721.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC721.json
deleted file mode 100644
index 187963d..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/ERC721.json
+++ /dev/null
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Used in approvals.\n @param operator Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"ced3e100","name":"ERC1155InvalidOperator","nameLocation":"6158:22:0","parameters":{"id":127,"nodeType":"ParameterList","parameters":[{"constant":false,"id":126,"mutability":"mutable","name":"operator","nameLocation":"6189:8:0","nodeType":"VariableDeclaration","scope":128,"src":"6181:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":125,"name":"address","nodeType":"ElementaryTypeName","src":"6181:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"6180:18:0"}},{"id":135,"nodeType":"ErrorDefinition","src":"6490:73:0","nodes":[],"documentation":{"id":129,"nodeType":"StructuredDocumentation","src":"6205:280:0","text":" @dev Indicates an array length mismatch between ids and 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`IERC721Receiver.onERC721Received.selector`."},"functionSelector":"150b7a02","implemented":false,"kind":"function","modifiers":[],"name":"onERC721Received","nameLocation":"27899:16:0","parameters":{"id":1584,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1577,"mutability":"mutable","name":"operator","nameLocation":"27933:8:0","nodeType":"VariableDeclaration","scope":1588,"src":"27925:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1576,"name":"address","nodeType":"ElementaryTypeName","src":"27925:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1579,"mutability":"mutable","name":"from","nameLocation":"27959:4:0","nodeType":"VariableDeclaration","scope":1588,"src":"27951:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1578,"name":"address","nodeType":"ElementaryTypeName","src":"27951:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1581,"mutability":"mutable","name":"tokenId","nameLocation":"27981:7:0","nodeType":"VariableDeclaration","scope":1588,"src":"27973:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1580,"name":"uint256","nodeType":"ElementaryTypeName","src":"27973:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1583,"mutability":"mutable","name":"data","nameLocation":"28013:4:0","nodeType":"VariableDeclaration","scope":1588,"src":"27998:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1582,"name":"bytes","nodeType":"ElementaryTypeName","src":"27998:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"27915:108:0"},"returnParameters":{"id":1587,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1586,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1588,"src":"28042:6:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1585,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28042:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28041:8:0"},"scope":1589,"stateMutability":"nonpayable","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC721Receiver","contractDependencies":[],"contractKind":"interface","documentation":{"id":1574,"nodeType":"StructuredDocumentation","src":"27200:152:0","text":" @title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC1155Errors.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC1155Errors.json
deleted file mode 100644
index 1f45b73..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC1155Errors.json
+++ /dev/null
@@ -1 +0,0 @@
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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC165.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC165.json
deleted file mode 100644
index 891983d..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC165.json
+++ /dev/null
@@ -1 +0,0 @@
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For example, `address(0)` is a forbidden owner in EIP-20.\n Used in balance queries.\n @param owner Address of the current owner of a token."},"errorSelector":"89c62b64","name":"ERC721InvalidOwner","nameLocation":"2480:18:0","parameters":{"id":46,"nodeType":"ParameterList","parameters":[{"constant":false,"id":45,"mutability":"mutable","name":"owner","nameLocation":"2507:5:0","nodeType":"VariableDeclaration","scope":47,"src":"2499:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":44,"name":"address","nodeType":"ElementaryTypeName","src":"2499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2498:15:0"}},{"id":52,"nodeType":"ErrorDefinition","src":"2657:46:0","nodes":[],"documentation":{"id":48,"nodeType":"StructuredDocumentation","src":"2520:132:0","text":" @dev Indicates a `tokenId` whose `owner` is the zero address.\n @param tokenId Identifier number of a token."},"errorSelector":"7e273289","name":"ERC721NonexistentToken","nameLocation":"2663:22:0","parameters":{"id":51,"nodeType":"ParameterList","parameters":[{"constant":false,"id":50,"mutability":"mutable","name":"tokenId","nameLocation":"2694:7:0","nodeType":"VariableDeclaration","scope":52,"src":"2686:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":49,"name":"uint256","nodeType":"ElementaryTypeName","src":"2686:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"2685:17:0"}},{"id":61,"nodeType":"ErrorDefinition","src":"3003:75:0","nodes":[],"documentation":{"id":53,"nodeType":"StructuredDocumentation","src":"2709:289:0","text":" @dev Indicates an error related to the ownership over a particular token. 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Used in approvals.\n @param operator Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"ced3e100","name":"ERC1155InvalidOperator","nameLocation":"6158:22:0","parameters":{"id":127,"nodeType":"ParameterList","parameters":[{"constant":false,"id":126,"mutability":"mutable","name":"operator","nameLocation":"6189:8:0","nodeType":"VariableDeclaration","scope":128,"src":"6181:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":125,"name":"address","nodeType":"ElementaryTypeName","src":"6181:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"6180:18:0"}},{"id":135,"nodeType":"ErrorDefinition","src":"6490:73:0","nodes":[],"documentation":{"id":129,"nodeType":"StructuredDocumentation","src":"6205:280:0","text":" @dev Indicates an array length mismatch between ids and 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@title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC20Errors.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC20Errors.json
deleted file mode 100644
index f44c46b..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC20Errors.json
+++ /dev/null
@@ -1 +0,0 @@
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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721.json
deleted file mode 100644
index 18ec723..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721.json
+++ /dev/null
@@ -1 +0,0 @@
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This function call must use less than 30 000 gas.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"Transfers `tokenId` token from `from` to `to`. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"src/MNISTNFT_Flattened.sol\":\"IERC721\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"src/MNISTNFT_Flattened.sol\":{\"keccak256\":\"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4\",\"urls\":[\"bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891\",\"dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"approved","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Approval","anonymous":false},{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"operator","type":"address","indexed":true},{"internalType":"bool","name":"approved","type":"bool","indexed":false}],"type":"event","name":"ApprovalForAll","anonymous":false},{"inputs":[{"internalType":"address","name":"from","type":"address","indexed":true},{"internalType":"address","name":"to","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Transfer","anonymous":false},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"approve"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"view","type":"function","name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"getApproved","outputs":[{"internalType":"address","name":"operator","type":"address"}]},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"stateMutability":"view","type":"function","name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"ownerOf","outputs":[{"internalType":"address","name":"owner","type":"address"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"stateMutability":"nonpayable","type":"function","name":"setApprovalForAll"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"transferFrom"}],"devdoc":{"kind":"dev","methods":{"approve(address,uint256)":{"details":"Gives permission to `to` to transfer `tokenId` token to another account. The approval is cleared when the token is transferred. Only a single account can be approved at a time, so approving the zero address clears previous approvals. Requirements: - The caller must own the token or be an approved operator. - `tokenId` must exist. Emits an {Approval} event."},"balanceOf(address)":{"details":"Returns the number of tokens in ``owner``'s account."},"getApproved(uint256)":{"details":"Returns the account approved for `tokenId` token. Requirements: - `tokenId` must exist."},"isApprovedForAll(address,address)":{"details":"Returns if the `operator` is allowed to manage all of the assets of `owner`. See {setApprovalForAll}"},"ownerOf(uint256)":{"details":"Returns the owner of the `tokenId` token. Requirements: - `tokenId` must exist."},"safeTransferFrom(address,address,uint256)":{"details":"Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must have been allowed to move this token by either {approve} or   {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"safeTransferFrom(address,address,uint256,bytes)":{"details":"Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"setApprovalForAll(address,bool)":{"details":"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the address zero. Emits an {ApprovalForAll} event."},"supportsInterface(bytes4)":{"details":"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas."},"transferFrom(address,address,uint256)":{"details":"Transfers `tokenId` token from `from` to `to`. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"src/MNISTNFT_Flattened.sol":"IERC721"},"evmVersion":"paris","libraries":{}},"sources":{"src/MNISTNFT_Flattened.sol":{"keccak256":"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4","urls":["bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891","dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif"],"license":null}},"version":1},"ast":{"absolutePath":"src/MNISTNFT_Flattened.sol","id":2845,"exportedSymbols":{"Context":[1572],"ERC165":[1621],"ERC721":[2753],"IERC1155Errors":[136],"IERC165":[1600],"IERC20Errors":[41],"IERC721":[1735],"IERC721Errors":[89],"IERC721Metadata":[1760],"IERC721Receiver":[1589],"MNISTNFT":[2844],"Math":[1293],"SignedMath":[240],"Strings":[1543]},"nodeType":"SourceUnit","src":"146:53875:0","nodes":[{"id":1,"nodeType":"PragmaDirective","src":"146:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":41,"nodeType":"ContractDefinition","src":"312:1764:0","nodes":[{"id":11,"nodeType":"ErrorDefinition","src":"655:80:0","nodes":[],"documentation":{"id":3,"nodeType":"StructuredDocumentation","src":"341:309:0","text":" @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param balance Current balance for the interacting account.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"e450d38c","name":"ERC20InsufficientBalance","nameLocation":"661:24:0","parameters":{"id":10,"nodeType":"ParameterList","parameters":[{"constant":false,"id":5,"mutability":"mutable","name":"sender","nameLocation":"694:6:0","nodeType":"VariableDeclaration","scope":11,"src":"686:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":4,"name":"address","nodeType":"ElementaryTypeName","src":"686:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":7,"mutability":"mutable","name":"balance","nameLocation":"710:7:0","nodeType":"VariableDeclaration","scope":11,"src":"702:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":6,"name":"uint256","nodeType":"ElementaryTypeName","src":"702:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":9,"mutability":"mutable","name":"needed","nameLocation":"727:6:0","nodeType":"VariableDeclaration","scope":11,"src":"719:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":8,"name":"uint256","nodeType":"ElementaryTypeName","src":"719:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"685:49:0"}},{"id":16,"nodeType":"ErrorDefinition","src":"898:41:0","nodes":[],"documentation":{"id":12,"nodeType":"StructuredDocumentation","src":"741:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"96c6fd1e","name":"ERC20InvalidSender","nameLocation":"904:18:0","parameters":{"id":15,"nodeType":"ParameterList","parameters":[{"constant":false,"id":14,"mutability":"mutable","name":"sender","nameLocation":"931:6:0","nodeType":"VariableDeclaration","scope":16,"src":"923:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":13,"name":"address","nodeType":"ElementaryTypeName","src":"923:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"922:16:0"}},{"id":21,"nodeType":"ErrorDefinition","src":"1109:45:0","nodes":[],"documentation":{"id":17,"nodeType":"StructuredDocumentation","src":"945:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"ec442f05","name":"ERC20InvalidReceiver","nameLocation":"1115:20:0","parameters":{"id":20,"nodeType":"ParameterList","parameters":[{"constant":false,"id":19,"mutability":"mutable","name":"receiver","nameLocation":"1144:8:0","nodeType":"VariableDeclaration","scope":21,"src":"1136:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":18,"name":"address","nodeType":"ElementaryTypeName","src":"1136:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1135:18:0"}},{"id":30,"nodeType":"ErrorDefinition","src":"1510:85:0","nodes":[],"documentation":{"id":22,"nodeType":"StructuredDocumentation","src":"1160:345:0","text":" @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.\n @param spender Address that may be allowed to operate on tokens without being their owner.\n @param allowance Amount of tokens a `spender` is allowed to operate with.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"fb8f41b2","name":"ERC20InsufficientAllowance","nameLocation":"1516:26:0","parameters":{"id":29,"nodeType":"ParameterList","parameters":[{"constant":false,"id":24,"mutability":"mutable","name":"spender","nameLocation":"1551:7:0","nodeType":"VariableDeclaration","scope":30,"src":"1543:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":23,"name":"address","nodeType":"ElementaryTypeName","src":"1543:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":26,"mutability":"mutable","name":"allowance","nameLocation":"1568:9:0","nodeType":"VariableDeclaration","scope":30,"src":"1560:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":25,"name":"uint256","nodeType":"ElementaryTypeName","src":"1560:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":28,"mutability":"mutable","name":"needed","nameLocation":"1587:6:0","nodeType":"VariableDeclaration","scope":30,"src":"1579:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":27,"name":"uint256","nodeType":"ElementaryTypeName","src":"1579:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1542:52:0"}},{"id":35,"nodeType":"ErrorDefinition","src":"1780:45:0","nodes":[],"documentation":{"id":31,"nodeType":"StructuredDocumentation","src":"1601:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"e602df05","name":"ERC20InvalidApprover","nameLocation":"1786:20:0","parameters":{"id":34,"nodeType":"ParameterList","parameters":[{"constant":false,"id":33,"mutability":"mutable","name":"approver","nameLocation":"1815:8:0","nodeType":"VariableDeclaration","scope":35,"src":"1807:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":32,"name":"address","nodeType":"ElementaryTypeName","src":"1807:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1806:18:0"}},{"id":40,"nodeType":"ErrorDefinition","src":"2031:43:0","nodes":[],"documentation":{"id":36,"nodeType":"StructuredDocumentation","src":"1831:195:0","text":" @dev Indicates a failure with the `spender` to be approved. Used in approvals.\n @param spender Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"94280d62","name":"ERC20InvalidSpender","nameLocation":"2037:19:0","parameters":{"id":39,"nodeType":"ParameterList","parameters":[{"constant":false,"id":38,"mutability":"mutable","name":"spender","nameLocation":"2065:7:0","nodeType":"VariableDeclaration","scope":40,"src":"2057:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":37,"name":"address","nodeType":"ElementaryTypeName","src":"2057:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2056:17:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC20Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":2,"nodeType":"StructuredDocumentation","src":"172:139:0","text":" @dev Standard ERC20 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[41],"name":"IERC20Errors","nameLocation":"322:12:0","scope":2845,"usedErrors":[11,16,21,30,35,40],"usedEvents":[]},{"id":89,"nodeType":"ContractDefinition","src":"2220:2092:0","nodes":[{"id":47,"nodeType":"ErrorDefinition","src":"2474:40:0","nodes":[],"documentation":{"id":43,"nodeType":"StructuredDocumentation","src":"2250:219:0","text":" @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.\n Used in balance queries.\n @param owner Address of the current owner of a token."},"errorSelector":"89c62b64","name":"ERC721InvalidOwner","nameLocation":"2480:18:0","parameters":{"id":46,"nodeType":"ParameterList","parameters":[{"constant":false,"id":45,"mutability":"mutable","name":"owner","nameLocation":"2507:5:0","nodeType":"VariableDeclaration","scope":47,"src":"2499:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":44,"name":"address","nodeType":"ElementaryTypeName","src":"2499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2498:15:0"}},{"id":52,"nodeType":"ErrorDefinition","src":"2657:46:0","nodes":[],"documentation":{"id":48,"nodeType":"StructuredDocumentation","src":"2520:132:0","text":" @dev Indicates a `tokenId` whose `owner` is the zero address.\n @param tokenId Identifier number of a token."},"errorSelector":"7e273289","name":"ERC721NonexistentToken","nameLocation":"2663:22:0","parameters":{"id":51,"nodeType":"ParameterList","parameters":[{"constant":false,"id":50,"mutability":"mutable","name":"tokenId","nameLocation":"2694:7:0","nodeType":"VariableDeclaration","scope":52,"src":"2686:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":49,"name":"uint256","nodeType":"ElementaryTypeName","src":"2686:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"2685:17:0"}},{"id":61,"nodeType":"ErrorDefinition","src":"3003:75:0","nodes":[],"documentation":{"id":53,"nodeType":"StructuredDocumentation","src":"2709:289:0","text":" @dev Indicates an error related to the ownership over a particular token. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param tokenId Identifier number of a token.\n @param owner Address of the current owner of a token."},"errorSelector":"64283d7b","name":"ERC721IncorrectOwner","nameLocation":"3009:20:0","parameters":{"id":60,"nodeType":"ParameterList","parameters":[{"constant":false,"id":55,"mutability":"mutable","name":"sender","nameLocation":"3038:6:0","nodeType":"VariableDeclaration","scope":61,"src":"3030:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":54,"name":"address","nodeType":"ElementaryTypeName","src":"3030:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":57,"mutability":"mutable","name":"tokenId","nameLocation":"3054:7:0","nodeType":"VariableDeclaration","scope":61,"src":"3046:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":56,"name":"uint256","nodeType":"ElementaryTypeName","src":"3046:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":59,"mutability":"mutable","name":"owner","nameLocation":"3071:5:0","nodeType":"VariableDeclaration","scope":61,"src":"3063:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":58,"name":"address","nodeType":"ElementaryTypeName","src":"3063:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3029:48:0"}},{"id":66,"nodeType":"ErrorDefinition","src":"3241:42:0","nodes":[],"documentation":{"id":62,"nodeType":"StructuredDocumentation","src":"3084:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"73c6ac6e","name":"ERC721InvalidSender","nameLocation":"3247:19:0","parameters":{"id":65,"nodeType":"ParameterList","parameters":[{"constant":false,"id":64,"mutability":"mutable","name":"sender","nameLocation":"3275:6:0","nodeType":"VariableDeclaration","scope":66,"src":"3267:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":63,"name":"address","nodeType":"ElementaryTypeName","src":"3267:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3266:16:0"}},{"id":71,"nodeType":"ErrorDefinition","src":"3453:46:0","nodes":[],"documentation":{"id":67,"nodeType":"StructuredDocumentation","src":"3289:159:0","text":" @dev Indicates a failure with the token `receiver`. 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@title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Errors.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Errors.json
deleted file mode 100644
index 43ed05e..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Errors.json
+++ /dev/null
@@ -1 +0,0 @@
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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Metadata.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Metadata.json
deleted file mode 100644
index 46f94cc..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Metadata.json
+++ /dev/null
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Requirements: - `tokenId` must exist.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must have been allowed to move this token by either {approve} or   {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the address zero. Emits an {ApprovalForAll} event.\"},\"supportsInterface(bytes4)\":{\"details\":\"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas.\"},\"symbol()\":{\"details\":\"Returns the token collection symbol.\"},\"tokenURI(uint256)\":{\"details\":\"Returns the Uniform Resource Identifier (URI) for `tokenId` token.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"Transfers `tokenId` token from `from` to `to`. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event.\"}},\"title\":\"ERC-721 Non-Fungible Token Standard, optional metadata extension\",\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"src/MNISTNFT_Flattened.sol\":\"IERC721Metadata\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"src/MNISTNFT_Flattened.sol\":{\"keccak256\":\"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4\",\"urls\":[\"bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891\",\"dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"approved","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Approval","anonymous":false},{"inputs":[{"internalType":"address","name":"owner","type":"address","indexed":true},{"internalType":"address","name":"operator","type":"address","indexed":true},{"internalType":"bool","name":"approved","type":"bool","indexed":false}],"type":"event","name":"ApprovalForAll","anonymous":false},{"inputs":[{"internalType":"address","name":"from","type":"address","indexed":true},{"internalType":"address","name":"to","type":"address","indexed":true},{"internalType":"uint256","name":"tokenId","type":"uint256","indexed":true}],"type":"event","name":"Transfer","anonymous":false},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"approve"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"view","type":"function","name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"getApproved","outputs":[{"internalType":"address","name":"operator","type":"address"}]},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"stateMutability":"view","type":"function","name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"name","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"ownerOf","outputs":[{"internalType":"address","name":"owner","type":"address"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"stateMutability":"nonpayable","type":"function","name":"setApprovalForAll"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"transferFrom"}],"devdoc":{"kind":"dev","methods":{"approve(address,uint256)":{"details":"Gives permission to `to` to transfer `tokenId` token to another account. The approval is cleared when the token is transferred. Only a single account can be approved at a time, so approving the zero address clears previous approvals. Requirements: - The caller must own the token or be an approved operator. - `tokenId` must exist. Emits an {Approval} event."},"balanceOf(address)":{"details":"Returns the number of tokens in ``owner``'s account."},"getApproved(uint256)":{"details":"Returns the account approved for `tokenId` token. Requirements: - `tokenId` must exist."},"isApprovedForAll(address,address)":{"details":"Returns if the `operator` is allowed to manage all of the assets of `owner`. See {setApprovalForAll}"},"name()":{"details":"Returns the token collection name."},"ownerOf(uint256)":{"details":"Returns the owner of the `tokenId` token. Requirements: - `tokenId` must exist."},"safeTransferFrom(address,address,uint256)":{"details":"Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must have been allowed to move this token by either {approve} or   {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"safeTransferFrom(address,address,uint256,bytes)":{"details":"Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon   a safe transfer. Emits a {Transfer} event."},"setApprovalForAll(address,bool)":{"details":"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the address zero. Emits an {ApprovalForAll} event."},"supportsInterface(bytes4)":{"details":"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas."},"symbol()":{"details":"Returns the token collection symbol."},"tokenURI(uint256)":{"details":"Returns the Uniform Resource Identifier (URI) for `tokenId` token."},"transferFrom(address,address,uint256)":{"details":"Transfers `tokenId` token from `from` to `to`. WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must understand this adds an external call which potentially creates a reentrancy vulnerability. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"src/MNISTNFT_Flattened.sol":"IERC721Metadata"},"evmVersion":"paris","libraries":{}},"sources":{"src/MNISTNFT_Flattened.sol":{"keccak256":"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4","urls":["bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891","dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif"],"license":null}},"version":1},"ast":{"absolutePath":"src/MNISTNFT_Flattened.sol","id":2845,"exportedSymbols":{"Context":[1572],"ERC165":[1621],"ERC721":[2753],"IERC1155Errors":[136],"IERC165":[1600],"IERC20Errors":[41],"IERC721":[1735],"IERC721Errors":[89],"IERC721Metadata":[1760],"IERC721Receiver":[1589],"MNISTNFT":[2844],"Math":[1293],"SignedMath":[240],"Strings":[1543]},"nodeType":"SourceUnit","src":"146:53875:0","nodes":[{"id":1,"nodeType":"PragmaDirective","src":"146:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":41,"nodeType":"ContractDefinition","src":"312:1764:0","nodes":[{"id":11,"nodeType":"ErrorDefinition","src":"655:80:0","nodes":[],"documentation":{"id":3,"nodeType":"StructuredDocumentation","src":"341:309:0","text":" @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param balance Current balance for the interacting account.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"e450d38c","name":"ERC20InsufficientBalance","nameLocation":"661:24:0","parameters":{"id":10,"nodeType":"ParameterList","parameters":[{"constant":false,"id":5,"mutability":"mutable","name":"sender","nameLocation":"694:6:0","nodeType":"VariableDeclaration","scope":11,"src":"686:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":4,"name":"address","nodeType":"ElementaryTypeName","src":"686:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":7,"mutability":"mutable","name":"balance","nameLocation":"710:7:0","nodeType":"VariableDeclaration","scope":11,"src":"702:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":6,"name":"uint256","nodeType":"ElementaryTypeName","src":"702:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":9,"mutability":"mutable","name":"needed","nameLocation":"727:6:0","nodeType":"VariableDeclaration","scope":11,"src":"719:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":8,"name":"uint256","nodeType":"ElementaryTypeName","src":"719:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"685:49:0"}},{"id":16,"nodeType":"ErrorDefinition","src":"898:41:0","nodes":[],"documentation":{"id":12,"nodeType":"StructuredDocumentation","src":"741:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"96c6fd1e","name":"ERC20InvalidSender","nameLocation":"904:18:0","parameters":{"id":15,"nodeType":"ParameterList","parameters":[{"constant":false,"id":14,"mutability":"mutable","name":"sender","nameLocation":"931:6:0","nodeType":"VariableDeclaration","scope":16,"src":"923:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":13,"name":"address","nodeType":"ElementaryTypeName","src":"923:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"922:16:0"}},{"id":21,"nodeType":"ErrorDefinition","src":"1109:45:0","nodes":[],"documentation":{"id":17,"nodeType":"StructuredDocumentation","src":"945:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"ec442f05","name":"ERC20InvalidReceiver","nameLocation":"1115:20:0","parameters":{"id":20,"nodeType":"ParameterList","parameters":[{"constant":false,"id":19,"mutability":"mutable","name":"receiver","nameLocation":"1144:8:0","nodeType":"VariableDeclaration","scope":21,"src":"1136:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":18,"name":"address","nodeType":"ElementaryTypeName","src":"1136:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1135:18:0"}},{"id":30,"nodeType":"ErrorDefinition","src":"1510:85:0","nodes":[],"documentation":{"id":22,"nodeType":"StructuredDocumentation","src":"1160:345:0","text":" @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.\n @param spender Address that may be allowed to operate on tokens without being their owner.\n @param allowance Amount of tokens a `spender` is allowed to operate with.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"fb8f41b2","name":"ERC20InsufficientAllowance","nameLocation":"1516:26:0","parameters":{"id":29,"nodeType":"ParameterList","parameters":[{"constant":false,"id":24,"mutability":"mutable","name":"spender","nameLocation":"1551:7:0","nodeType":"VariableDeclaration","scope":30,"src":"1543:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":23,"name":"address","nodeType":"ElementaryTypeName","src":"1543:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":26,"mutability":"mutable","name":"allowance","nameLocation":"1568:9:0","nodeType":"VariableDeclaration","scope":30,"src":"1560:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":25,"name":"uint256","nodeType":"ElementaryTypeName","src":"1560:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":28,"mutability":"mutable","name":"needed","nameLocation":"1587:6:0","nodeType":"VariableDeclaration","scope":30,"src":"1579:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":27,"name":"uint256","nodeType":"ElementaryTypeName","src":"1579:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1542:52:0"}},{"id":35,"nodeType":"ErrorDefinition","src":"1780:45:0","nodes":[],"documentation":{"id":31,"nodeType":"StructuredDocumentation","src":"1601:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"e602df05","name":"ERC20InvalidApprover","nameLocation":"1786:20:0","parameters":{"id":34,"nodeType":"ParameterList","parameters":[{"constant":false,"id":33,"mutability":"mutable","name":"approver","nameLocation":"1815:8:0","nodeType":"VariableDeclaration","scope":35,"src":"1807:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":32,"name":"address","nodeType":"ElementaryTypeName","src":"1807:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1806:18:0"}},{"id":40,"nodeType":"ErrorDefinition","src":"2031:43:0","nodes":[],"documentation":{"id":36,"nodeType":"StructuredDocumentation","src":"1831:195:0","text":" @dev Indicates a failure with the `spender` to be approved. Used in approvals.\n @param spender Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"94280d62","name":"ERC20InvalidSpender","nameLocation":"2037:19:0","parameters":{"id":39,"nodeType":"ParameterList","parameters":[{"constant":false,"id":38,"mutability":"mutable","name":"spender","nameLocation":"2065:7:0","nodeType":"VariableDeclaration","scope":40,"src":"2057:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":37,"name":"address","nodeType":"ElementaryTypeName","src":"2057:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2056:17:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC20Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":2,"nodeType":"StructuredDocumentation","src":"172:139:0","text":" @dev Standard ERC20 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[41],"name":"IERC20Errors","nameLocation":"322:12:0","scope":2845,"usedErrors":[11,16,21,30,35,40],"usedEvents":[]},{"id":89,"nodeType":"ContractDefinition","src":"2220:2092:0","nodes":[{"id":47,"nodeType":"ErrorDefinition","src":"2474:40:0","nodes":[],"documentation":{"id":43,"nodeType":"StructuredDocumentation","src":"2250:219:0","text":" @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.\n Used in balance queries.\n @param owner Address of the current owner of a token."},"errorSelector":"89c62b64","name":"ERC721InvalidOwner","nameLocation":"2480:18:0","parameters":{"id":46,"nodeType":"ParameterList","parameters":[{"constant":false,"id":45,"mutability":"mutable","name":"owner","nameLocation":"2507:5:0","nodeType":"VariableDeclaration","scope":47,"src":"2499:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":44,"name":"address","nodeType":"ElementaryTypeName","src":"2499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2498:15:0"}},{"id":52,"nodeType":"ErrorDefinition","src":"2657:46:0","nodes":[],"documentation":{"id":48,"nodeType":"StructuredDocumentation","src":"2520:132:0","text":" @dev Indicates a `tokenId` whose `owner` is the zero address.\n @param tokenId Identifier number of a token."},"errorSelector":"7e273289","name":"ERC721NonexistentToken","nameLocation":"2663:22:0","parameters":{"id":51,"nodeType":"ParameterList","parameters":[{"constant":false,"id":50,"mutability":"mutable","name":"tokenId","nameLocation":"2694:7:0","nodeType":"VariableDeclaration","scope":52,"src":"2686:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":49,"name":"uint256","nodeType":"ElementaryTypeName","src":"2686:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"2685:17:0"}},{"id":61,"nodeType":"ErrorDefinition","src":"3003:75:0","nodes":[],"documentation":{"id":53,"nodeType":"StructuredDocumentation","src":"2709:289:0","text":" @dev Indicates an error related to the ownership over a particular token. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param tokenId Identifier number of a token.\n @param owner Address of the current owner of a token."},"errorSelector":"64283d7b","name":"ERC721IncorrectOwner","nameLocation":"3009:20:0","parameters":{"id":60,"nodeType":"ParameterList","parameters":[{"constant":false,"id":55,"mutability":"mutable","name":"sender","nameLocation":"3038:6:0","nodeType":"VariableDeclaration","scope":61,"src":"3030:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":54,"name":"address","nodeType":"ElementaryTypeName","src":"3030:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":57,"mutability":"mutable","name":"tokenId","nameLocation":"3054:7:0","nodeType":"VariableDeclaration","scope":61,"src":"3046:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":56,"name":"uint256","nodeType":"ElementaryTypeName","src":"3046:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":59,"mutability":"mutable","name":"owner","nameLocation":"3071:5:0","nodeType":"VariableDeclaration","scope":61,"src":"3063:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":58,"name":"address","nodeType":"ElementaryTypeName","src":"3063:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3029:48:0"}},{"id":66,"nodeType":"ErrorDefinition","src":"3241:42:0","nodes":[],"documentation":{"id":62,"nodeType":"StructuredDocumentation","src":"3084:152:0","text":" @dev Indicates a failure with the token `sender`. 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@title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Receiver.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Receiver.json
deleted file mode 100644
index 1757c87..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/IERC721Receiver.json
+++ /dev/null
@@ -1 +0,0 @@
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The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\"}},\"title\":\"ERC721 token receiver interface\",\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"src/MNISTNFT_Flattened.sol\":\"IERC721Receiver\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[\":@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/\",\":ds-test/=lib/forge-std/lib/ds-test/src/\",\":erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/\",\":forge-std/=lib/forge-std/src/\",\":openzeppelin-contracts/=lib/openzeppelin-contracts/\"]},\"sources\":{\"src/MNISTNFT_Flattened.sol\":{\"keccak256\":\"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4\",\"urls\":[\"bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891\",\"dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif\"]}},\"version\":1}","metadata":{"compiler":{"version":"0.8.24+commit.e11b9ed9"},"language":"Solidity","output":{"abi":[{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}]}],"devdoc":{"kind":"dev","methods":{"onERC721Received(address,address,uint256,bytes)":{"details":"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. 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The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"src/MNISTNFT_Flattened.sol":"IERC721Receiver"},"evmVersion":"paris","libraries":{}},"sources":{"src/MNISTNFT_Flattened.sol":{"keccak256":"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4","urls":["bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891","dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif"],"license":null}},"version":1},"ast":{"absolutePath":"src/MNISTNFT_Flattened.sol","id":2845,"exportedSymbols":{"Context":[1572],"ERC165":[1621],"ERC721":[2753],"IERC1155Errors":[136],"IERC165":[1600],"IERC20Errors":[41],"IERC721":[1735],"IERC721Errors":[89],"IERC721Metadata":[1760],"IERC721Receiver":[1589],"MNISTNFT":[2844],"Math":[1293],"SignedMath":[240],"Strings":[1543]},"nodeType":"SourceUnit","src":"146:53875:0","nodes":[{"id":1,"nodeType":"PragmaDirective","src":"146:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":41,"nodeType":"ContractDefinition","src":"312:1764:0","nodes":[{"id":11,"nodeType":"ErrorDefinition","src":"655:80:0","nodes":[],"documentation":{"id":3,"nodeType":"StructuredDocumentation","src":"341:309:0","text":" @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param balance Current balance for the interacting account.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"e450d38c","name":"ERC20InsufficientBalance","nameLocation":"661:24:0","parameters":{"id":10,"nodeType":"ParameterList","parameters":[{"constant":false,"id":5,"mutability":"mutable","name":"sender","nameLocation":"694:6:0","nodeType":"VariableDeclaration","scope":11,"src":"686:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":4,"name":"address","nodeType":"ElementaryTypeName","src":"686:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":7,"mutability":"mutable","name":"balance","nameLocation":"710:7:0","nodeType":"VariableDeclaration","scope":11,"src":"702:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":6,"name":"uint256","nodeType":"ElementaryTypeName","src":"702:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":9,"mutability":"mutable","name":"needed","nameLocation":"727:6:0","nodeType":"VariableDeclaration","scope":11,"src":"719:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":8,"name":"uint256","nodeType":"ElementaryTypeName","src":"719:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"685:49:0"}},{"id":16,"nodeType":"ErrorDefinition","src":"898:41:0","nodes":[],"documentation":{"id":12,"nodeType":"StructuredDocumentation","src":"741:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"96c6fd1e","name":"ERC20InvalidSender","nameLocation":"904:18:0","parameters":{"id":15,"nodeType":"ParameterList","parameters":[{"constant":false,"id":14,"mutability":"mutable","name":"sender","nameLocation":"931:6:0","nodeType":"VariableDeclaration","scope":16,"src":"923:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":13,"name":"address","nodeType":"ElementaryTypeName","src":"923:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"922:16:0"}},{"id":21,"nodeType":"ErrorDefinition","src":"1109:45:0","nodes":[],"documentation":{"id":17,"nodeType":"StructuredDocumentation","src":"945:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"ec442f05","name":"ERC20InvalidReceiver","nameLocation":"1115:20:0","parameters":{"id":20,"nodeType":"ParameterList","parameters":[{"constant":false,"id":19,"mutability":"mutable","name":"receiver","nameLocation":"1144:8:0","nodeType":"VariableDeclaration","scope":21,"src":"1136:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":18,"name":"address","nodeType":"ElementaryTypeName","src":"1136:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1135:18:0"}},{"id":30,"nodeType":"ErrorDefinition","src":"1510:85:0","nodes":[],"documentation":{"id":22,"nodeType":"StructuredDocumentation","src":"1160:345:0","text":" @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.\n @param spender Address that may be allowed to operate on tokens without being their owner.\n @param allowance Amount of tokens a `spender` is allowed to operate with.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"fb8f41b2","name":"ERC20InsufficientAllowance","nameLocation":"1516:26:0","parameters":{"id":29,"nodeType":"ParameterList","parameters":[{"constant":false,"id":24,"mutability":"mutable","name":"spender","nameLocation":"1551:7:0","nodeType":"VariableDeclaration","scope":30,"src":"1543:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":23,"name":"address","nodeType":"ElementaryTypeName","src":"1543:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":26,"mutability":"mutable","name":"allowance","nameLocation":"1568:9:0","nodeType":"VariableDeclaration","scope":30,"src":"1560:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":25,"name":"uint256","nodeType":"ElementaryTypeName","src":"1560:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":28,"mutability":"mutable","name":"needed","nameLocation":"1587:6:0","nodeType":"VariableDeclaration","scope":30,"src":"1579:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":27,"name":"uint256","nodeType":"ElementaryTypeName","src":"1579:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1542:52:0"}},{"id":35,"nodeType":"ErrorDefinition","src":"1780:45:0","nodes":[],"documentation":{"id":31,"nodeType":"StructuredDocumentation","src":"1601:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"e602df05","name":"ERC20InvalidApprover","nameLocation":"1786:20:0","parameters":{"id":34,"nodeType":"ParameterList","parameters":[{"constant":false,"id":33,"mutability":"mutable","name":"approver","nameLocation":"1815:8:0","nodeType":"VariableDeclaration","scope":35,"src":"1807:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":32,"name":"address","nodeType":"ElementaryTypeName","src":"1807:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1806:18:0"}},{"id":40,"nodeType":"ErrorDefinition","src":"2031:43:0","nodes":[],"documentation":{"id":36,"nodeType":"StructuredDocumentation","src":"1831:195:0","text":" @dev Indicates a failure with the `spender` to be approved. Used in approvals.\n @param spender Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"94280d62","name":"ERC20InvalidSpender","nameLocation":"2037:19:0","parameters":{"id":39,"nodeType":"ParameterList","parameters":[{"constant":false,"id":38,"mutability":"mutable","name":"spender","nameLocation":"2065:7:0","nodeType":"VariableDeclaration","scope":40,"src":"2057:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":37,"name":"address","nodeType":"ElementaryTypeName","src":"2057:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2056:17:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC20Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":2,"nodeType":"StructuredDocumentation","src":"172:139:0","text":" @dev Standard ERC20 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[41],"name":"IERC20Errors","nameLocation":"322:12:0","scope":2845,"usedErrors":[11,16,21,30,35,40],"usedEvents":[]},{"id":89,"nodeType":"ContractDefinition","src":"2220:2092:0","nodes":[{"id":47,"nodeType":"ErrorDefinition","src":"2474:40:0","nodes":[],"documentation":{"id":43,"nodeType":"StructuredDocumentation","src":"2250:219:0","text":" @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.\n Used in balance queries.\n @param owner Address of the current owner of a token."},"errorSelector":"89c62b64","name":"ERC721InvalidOwner","nameLocation":"2480:18:0","parameters":{"id":46,"nodeType":"ParameterList","parameters":[{"constant":false,"id":45,"mutability":"mutable","name":"owner","nameLocation":"2507:5:0","nodeType":"VariableDeclaration","scope":47,"src":"2499:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":44,"name":"address","nodeType":"ElementaryTypeName","src":"2499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2498:15:0"}},{"id":52,"nodeType":"ErrorDefinition","src":"2657:46:0","nodes":[],"documentation":{"id":48,"nodeType":"StructuredDocumentation","src":"2520:132:0","text":" @dev Indicates a `tokenId` whose `owner` is the zero address.\n @param tokenId Identifier number of a token."},"errorSelector":"7e273289","name":"ERC721NonexistentToken","nameLocation":"2663:22:0","parameters":{"id":51,"nodeType":"ParameterList","parameters":[{"constant":false,"id":50,"mutability":"mutable","name":"tokenId","nameLocation":"2694:7:0","nodeType":"VariableDeclaration","scope":52,"src":"2686:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":49,"name":"uint256","nodeType":"ElementaryTypeName","src":"2686:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"2685:17:0"}},{"id":61,"nodeType":"ErrorDefinition","src":"3003:75:0","nodes":[],"documentation":{"id":53,"nodeType":"StructuredDocumentation","src":"2709:289:0","text":" @dev Indicates an error related to the ownership over a particular token. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param tokenId Identifier number of a token.\n @param owner Address of the current owner of a token."},"errorSelector":"64283d7b","name":"ERC721IncorrectOwner","nameLocation":"3009:20:0","parameters":{"id":60,"nodeType":"ParameterList","parameters":[{"constant":false,"id":55,"mutability":"mutable","name":"sender","nameLocation":"3038:6:0","nodeType":"VariableDeclaration","scope":61,"src":"3030:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":54,"name":"address","nodeType":"ElementaryTypeName","src":"3030:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":57,"mutability":"mutable","name":"tokenId","nameLocation":"3054:7:0","nodeType":"VariableDeclaration","scope":61,"src":"3046:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":56,"name":"uint256","nodeType":"ElementaryTypeName","src":"3046:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":59,"mutability":"mutable","name":"owner","nameLocation":"3071:5:0","nodeType":"VariableDeclaration","scope":61,"src":"3063:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":58,"name":"address","nodeType":"ElementaryTypeName","src":"3063:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3029:48:0"}},{"id":66,"nodeType":"ErrorDefinition","src":"3241:42:0","nodes":[],"documentation":{"id":62,"nodeType":"StructuredDocumentation","src":"3084:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"73c6ac6e","name":"ERC721InvalidSender","nameLocation":"3247:19:0","parameters":{"id":65,"nodeType":"ParameterList","parameters":[{"constant":false,"id":64,"mutability":"mutable","name":"sender","nameLocation":"3275:6:0","nodeType":"VariableDeclaration","scope":66,"src":"3267:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":63,"name":"address","nodeType":"ElementaryTypeName","src":"3267:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3266:16:0"}},{"id":71,"nodeType":"ErrorDefinition","src":"3453:46:0","nodes":[],"documentation":{"id":67,"nodeType":"StructuredDocumentation","src":"3289:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"64a0ae92","name":"ERC721InvalidReceiver","nameLocation":"3459:21:0","parameters":{"id":70,"nodeType":"ParameterList","parameters":[{"constant":false,"id":69,"mutability":"mutable","name":"receiver","nameLocation":"3489:8:0","nodeType":"VariableDeclaration","scope":71,"src":"3481:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":68,"name":"address","nodeType":"ElementaryTypeName","src":"3481:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3480:18:0"}},{"id":78,"nodeType":"ErrorDefinition","src":"3757:68:0","nodes":[],"documentation":{"id":72,"nodeType":"StructuredDocumentation","src":"3505:247:0","text":" @dev Indicates a failure with the `operator`’s approval. Used in transfers.\n @param operator Address that may be allowed to operate on tokens without being their owner.\n @param tokenId Identifier number of a token."},"errorSelector":"177e802f","name":"ERC721InsufficientApproval","nameLocation":"3763:26:0","parameters":{"id":77,"nodeType":"ParameterList","parameters":[{"constant":false,"id":74,"mutability":"mutable","name":"operator","nameLocation":"3798:8:0","nodeType":"VariableDeclaration","scope":78,"src":"3790:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":73,"name":"address","nodeType":"ElementaryTypeName","src":"3790:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":76,"mutability":"mutable","name":"tokenId","nameLocation":"3816:7:0","nodeType":"VariableDeclaration","scope":78,"src":"3808:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":75,"name":"uint256","nodeType":"ElementaryTypeName","src":"3808:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"3789:35:0"}},{"id":83,"nodeType":"ErrorDefinition","src":"4010:46:0","nodes":[],"documentation":{"id":79,"nodeType":"StructuredDocumentation","src":"3831:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"a9fbf51f","name":"ERC721InvalidApprover","nameLocation":"4016:21:0","parameters":{"id":82,"nodeType":"ParameterList","parameters":[{"constant":false,"id":81,"mutability":"mutable","name":"approver","nameLocation":"4046:8:0","nodeType":"VariableDeclaration","scope":83,"src":"4038:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":80,"name":"address","nodeType":"ElementaryTypeName","src":"4038:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"4037:18:0"}},{"id":88,"nodeType":"ErrorDefinition","src":"4264:46:0","nodes":[],"documentation":{"id":84,"nodeType":"StructuredDocumentation","src":"4062:197:0","text":" @dev Indicates a failure with the `operator` to be approved. Used in approvals.\n @param operator Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"5b08ba18","name":"ERC721InvalidOperator","nameLocation":"4270:21:0","parameters":{"id":87,"nodeType":"ParameterList","parameters":[{"constant":false,"id":86,"mutability":"mutable","name":"operator","nameLocation":"4300:8:0","nodeType":"VariableDeclaration","scope":88,"src":"4292:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":85,"name":"address","nodeType":"ElementaryTypeName","src":"4292:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"4291:18:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC721Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":42,"nodeType":"StructuredDocumentation","src":"2078:141:0","text":" @dev Standard ERC721 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[89],"name":"IERC721Errors","nameLocation":"2230:13:0","scope":2845,"usedErrors":[47,52,61,66,71,78,83,88],"usedEvents":[]},{"id":136,"nodeType":"ContractDefinition","src":"4458:2107:0","nodes":[{"id":101,"nodeType":"ErrorDefinition","src":"4855:99:0","nodes":[],"documentation":{"id":91,"nodeType":"StructuredDocumentation","src":"4489:361:0","text":" @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param balance Current balance for the interacting account.\n @param needed Minimum amount required to perform a transfer.\n @param tokenId Identifier number of a token."},"errorSelector":"03dee4c5","name":"ERC1155InsufficientBalance","nameLocation":"4861:26:0","parameters":{"id":100,"nodeType":"ParameterList","parameters":[{"constant":false,"id":93,"mutability":"mutable","name":"sender","nameLocation":"4896:6:0","nodeType":"VariableDeclaration","scope":101,"src":"4888:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":92,"name":"address","nodeType":"ElementaryTypeName","src":"4888:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":95,"mutability":"mutable","name":"balance","nameLocation":"4912:7:0","nodeType":"VariableDeclaration","scope":101,"src":"4904:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":94,"name":"uint256","nodeType":"ElementaryTypeName","src":"4904:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":97,"mutability":"mutable","name":"needed","nameLocation":"4929:6:0","nodeType":"VariableDeclaration","scope":101,"src":"4921:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":96,"name":"uint256","nodeType":"ElementaryTypeName","src":"4921:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":99,"mutability":"mutable","name":"tokenId","nameLocation":"4945:7:0","nodeType":"VariableDeclaration","scope":101,"src":"4937:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":98,"name":"uint256","nodeType":"ElementaryTypeName","src":"4937:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"4887:66:0"}},{"id":106,"nodeType":"ErrorDefinition","src":"5117:43:0","nodes":[],"documentation":{"id":102,"nodeType":"StructuredDocumentation","src":"4960:152:0","text":" @dev Indicates a failure with the token `sender`. 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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/MNISTNFT.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/MNISTNFT.json
deleted file mode 100644
index 4d0fed2..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/MNISTNFT.json
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e\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"getBalance\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"sendTo\",\"type\":\"address\"}],\"name\":\"mint\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"onERC721Received\",\"outputs\":[{\"internalType\":\"bytes4\",\"name\":\"\",\"type\":\"bytes4\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"tokenExists\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"}],\"devdoc\":{\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. Used in transfers.\",\"params\":{\"owner\":\"Address of the current owner of a token.\",\"sender\":\"Address whose tokens are being transferred.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InsufficientApproval(address,uint256)\":[{\"details\":\"Indicates a failure with the `operator`\\u2019s approval. Used in transfers.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\",\"tokenId\":\"Identifier number of a token.\"}}],\"ERC721InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC721InvalidOperator(address)\":[{\"details\":\"Indicates a failure with the `operator` to be approved. Used in approvals.\",\"params\":{\"operator\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC721InvalidOwner(address)\":[{\"details\":\"Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. Used in balance queries.\",\"params\":{\"owner\":\"Address of the current owner of a token.\"}}],\"ERC721InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. Used in transfers.\",\"params\":{\"receiver\":\"Address to which tokens are being transferred.\"}}],\"ERC721InvalidSender(address)\":[{\"details\":\"Indicates a failure with the token `sender`. Used in transfers.\",\"params\":{\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC721NonexistentToken(uint256)\":[{\"details\":\"Indicates a `tokenId` whose `owner` is the zero address.\",\"params\":{\"tokenId\":\"Identifier number of a token.\"}}]},\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See {IERC721-isApprovedForAll}.\"},\"name()\":{\"details\":\"See {IERC721Metadata-name}.\"},\"onERC721Received(address,address,uint256,bytes)\":{\"details\":\"Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} by `operator` from `from`, this function is called. It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\"},\"ownerOf(uint256)\":{\"details\":\"See {IERC721-ownerOf}.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"See {IERC721-setApprovalForAll}.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"},\"symbol()\":{\"details\":\"See {IERC721Metadata-symbol}.\"},\"tokenURI(uint256)\":{\"details\":\"See {IERC721Metadata-tokenURI}.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See 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tputs":[{"internalType":"address","name":"","type":"address"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"function","name":"safeTransferFrom"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"stateMutability":"nonpayable","type":"function","name":"setApprovalForAll"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"stateMutability":"view","type":"function","name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[],"stateMutability":"view","type":"function","name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function","name":"tokenExists","outputs":[{"internalType":"bool","name":"","type":"bool"}]},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"view","type":"function","name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}]},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function","name":"transferFrom"},{"inputs":[],"stateMutability":"payable","type":"receive"}],"devdoc":{"kind":"dev","methods":{"approve(address,uint256)":{"details":"See 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It must return its Solidity selector to confirm the token transfer. If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`."},"ownerOf(uint256)":{"details":"See {IERC721-ownerOf}."},"safeTransferFrom(address,address,uint256)":{"details":"See {IERC721-safeTransferFrom}."},"safeTransferFrom(address,address,uint256,bytes)":{"details":"See {IERC721-safeTransferFrom}."},"setApprovalForAll(address,bool)":{"details":"See {IERC721-setApprovalForAll}."},"supportsInterface(bytes4)":{"details":"See {IERC165-supportsInterface}."},"symbol()":{"details":"See {IERC721Metadata-symbol}."},"tokenURI(uint256)":{"details":"See {IERC721Metadata-tokenURI}."},"transferFrom(address,address,uint256)":{"details":"See {IERC721-transferFrom}."}},"version":1},"userdoc":{"kind":"user","methods":{},"version":1}},"settings":{"remappings":["@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/","ds-test/=lib/forge-std/lib/ds-test/src/","erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/","forge-std/=lib/forge-std/src/","openzeppelin-contracts/=lib/openzeppelin-contracts/"],"optimizer":{"enabled":true,"runs":200},"metadata":{"bytecodeHash":"ipfs"},"compilationTarget":{"src/MNISTNFT_Flattened.sol":"MNISTNFT"},"evmVersion":"paris","libraries":{}},"sources":{"src/MNISTNFT_Flattened.sol":{"keccak256":"0x7d7d560a95c52d45c450e09073d6b89fdacbb171e51ca1b1495abd43ab9583f4","urls":["bzz-raw://994768d2a51ed039dd0083d33ac75ea500508189e9b6b570541365c218a42891","dweb:/ipfs/QmeJLiZg51sCmc7sNcUA69Mu2nA4GsHnicXHXHELQHGoif"],"license":null}},"version":1},"ast":{"absolutePath":"src/MNISTNFT_Flattened.sol","id":2845,"exportedSymbols":{"Context":[1572],"ERC165":[1621],"ERC721":[2753],"IERC1155Errors":[136],"IERC165":[1600],"IERC20Errors":[41],"IERC721":[1735],"IERC721Errors":[89],"IERC721Metadata":[1760],"IERC721Receiver":[1589],"MNISTNFT":[2844],"Math":[1293],"SignedMath":[240],"Strings":[1543]},"nodeType":"SourceUnit","src":"146:53875:0","nodes":[{"id":1,"nodeType":"PragmaDirective","src":"146:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":41,"nodeType":"ContractDefinition","src":"312:1764:0","nodes":[{"id":11,"nodeType":"ErrorDefinition","src":"655:80:0","nodes":[],"documentation":{"id":3,"nodeType":"StructuredDocumentation","src":"341:309:0","text":" @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param balance Current balance for the interacting account.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"e450d38c","name":"ERC20InsufficientBalance","nameLocation":"661:24:0","parameters":{"id":10,"nodeType":"ParameterList","parameters":[{"constant":false,"id":5,"mutability":"mutable","name":"sender","nameLocation":"694:6:0","nodeType":"VariableDeclaration","scope":11,"src":"686:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":4,"name":"address","nodeType":"ElementaryTypeName","src":"686:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":7,"mutability":"mutable","name":"balance","nameLocation":"710:7:0","nodeType":"VariableDeclaration","scope":11,"src":"702:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":6,"name":"uint256","nodeType":"ElementaryTypeName","src":"702:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":9,"mutability":"mutable","name":"needed","nameLocation":"727:6:0","nodeType":"VariableDeclaration","scope":11,"src":"719:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":8,"name":"uint256","nodeType":"ElementaryTypeName","src":"719:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"685:49:0"}},{"id":16,"nodeType":"ErrorDefinition","src":"898:41:0","nodes":[],"documentation":{"id":12,"nodeType":"StructuredDocumentation","src":"741:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"96c6fd1e","name":"ERC20InvalidSender","nameLocation":"904:18:0","parameters":{"id":15,"nodeType":"ParameterList","parameters":[{"constant":false,"id":14,"mutability":"mutable","name":"sender","nameLocation":"931:6:0","nodeType":"VariableDeclaration","scope":16,"src":"923:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":13,"name":"address","nodeType":"ElementaryTypeName","src":"923:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"922:16:0"}},{"id":21,"nodeType":"ErrorDefinition","src":"1109:45:0","nodes":[],"documentation":{"id":17,"nodeType":"StructuredDocumentation","src":"945:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"ec442f05","name":"ERC20InvalidReceiver","nameLocation":"1115:20:0","parameters":{"id":20,"nodeType":"ParameterList","parameters":[{"constant":false,"id":19,"mutability":"mutable","name":"receiver","nameLocation":"1144:8:0","nodeType":"VariableDeclaration","scope":21,"src":"1136:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":18,"name":"address","nodeType":"ElementaryTypeName","src":"1136:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1135:18:0"}},{"id":30,"nodeType":"ErrorDefinition","src":"1510:85:0","nodes":[],"documentation":{"id":22,"nodeType":"StructuredDocumentation","src":"1160:345:0","text":" @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.\n @param spender Address that may be allowed to operate on tokens without being their owner.\n @param allowance Amount of tokens a `spender` is allowed to operate with.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"fb8f41b2","name":"ERC20InsufficientAllowance","nameLocation":"1516:26:0","parameters":{"id":29,"nodeType":"ParameterList","parameters":[{"constant":false,"id":24,"mutability":"mutable","name":"spender","nameLocation":"1551:7:0","nodeType":"VariableDeclaration","scope":30,"src":"1543:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":23,"name":"address","nodeType":"ElementaryTypeName","src":"1543:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":26,"mutability":"mutable","name":"allowance","nameLocation":"1568:9:0","nodeType":"VariableDeclaration","scope":30,"src":"1560:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":25,"name":"uint256","nodeType":"ElementaryTypeName","src":"1560:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":28,"mutability":"mutable","name":"needed","nameLocation":"1587:6:0","nodeType":"VariableDeclaration","scope":30,"src":"1579:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":27,"name":"uint256","nodeType":"ElementaryTypeName","src":"1579:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1542:52:0"}},{"id":35,"nodeType":"ErrorDefinition","src":"1780:45:0","nodes":[],"documentation":{"id":31,"nodeType":"StructuredDocumentation","src":"1601:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"e602df05","name":"ERC20InvalidApprover","nameLocation":"1786:20:0","parameters":{"id":34,"nodeType":"ParameterList","parameters":[{"constant":false,"id":33,"mutability":"mutable","name":"approver","nameLocation":"1815:8:0","nodeType":"VariableDeclaration","scope":35,"src":"1807:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":32,"name":"address","nodeType":"ElementaryTypeName","src":"1807:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"1806:18:0"}},{"id":40,"nodeType":"ErrorDefinition","src":"2031:43:0","nodes":[],"documentation":{"id":36,"nodeType":"StructuredDocumentation","src":"1831:195:0","text":" @dev Indicates a failure with the `spender` to be approved. Used in approvals.\n @param spender Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"94280d62","name":"ERC20InvalidSpender","nameLocation":"2037:19:0","parameters":{"id":39,"nodeType":"ParameterList","parameters":[{"constant":false,"id":38,"mutability":"mutable","name":"spender","nameLocation":"2065:7:0","nodeType":"VariableDeclaration","scope":40,"src":"2057:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":37,"name":"address","nodeType":"ElementaryTypeName","src":"2057:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2056:17:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC20Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":2,"nodeType":"StructuredDocumentation","src":"172:139:0","text":" @dev Standard ERC20 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[41],"name":"IERC20Errors","nameLocation":"322:12:0","scope":2845,"usedErrors":[11,16,21,30,35,40],"usedEvents":[]},{"id":89,"nodeType":"ContractDefinition","src":"2220:2092:0","nodes":[{"id":47,"nodeType":"ErrorDefinition","src":"2474:40:0","nodes":[],"documentation":{"id":43,"nodeType":"StructuredDocumentation","src":"2250:219:0","text":" @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.\n Used in balance queries.\n @param owner Address of the current owner of a token."},"errorSelector":"89c62b64","name":"ERC721InvalidOwner","nameLocation":"2480:18:0","parameters":{"id":46,"nodeType":"ParameterList","parameters":[{"constant":false,"id":45,"mutability":"mutable","name":"owner","nameLocation":"2507:5:0","nodeType":"VariableDeclaration","scope":47,"src":"2499:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":44,"name":"address","nodeType":"ElementaryTypeName","src":"2499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2498:15:0"}},{"id":52,"nodeType":"ErrorDefinition","src":"2657:46:0","nodes":[],"documentation":{"id":48,"nodeType":"StructuredDocumentation","src":"2520:132:0","text":" @dev Indicates a `tokenId` whose `owner` is the zero address.\n @param tokenId Identifier number of a token."},"errorSelector":"7e273289","name":"ERC721NonexistentToken","nameLocation":"2663:22:0","parameters":{"id":51,"nodeType":"ParameterList","parameters":[{"constant":false,"id":50,"mutability":"mutable","name":"tokenId","nameLocation":"2694:7:0","nodeType":"VariableDeclaration","scope":52,"src":"2686:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":49,"name":"uint256","nodeType":"ElementaryTypeName","src":"2686:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"2685:17:0"}},{"id":61,"nodeType":"ErrorDefinition","src":"3003:75:0","nodes":[],"documentation":{"id":53,"nodeType":"StructuredDocumentation","src":"2709:289:0","text":" @dev Indicates an error related to the ownership over a particular token. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param tokenId Identifier number of a token.\n @param owner Address of the current owner of a token."},"errorSelector":"64283d7b","name":"ERC721IncorrectOwner","nameLocation":"3009:20:0","parameters":{"id":60,"nodeType":"ParameterList","parameters":[{"constant":false,"id":55,"mutability":"mutable","name":"sender","nameLocation":"3038:6:0","nodeType":"VariableDeclaration","scope":61,"src":"3030:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":54,"name":"address","nodeType":"ElementaryTypeName","src":"3030:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":57,"mutability":"mutable","name":"tokenId","nameLocation":"3054:7:0","nodeType":"VariableDeclaration","scope":61,"src":"3046:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":56,"name":"uint256","nodeType":"ElementaryTypeName","src":"3046:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":59,"mutability":"mutable","name":"owner","nameLocation":"3071:5:0","nodeType":"VariableDeclaration","scope":61,"src":"3063:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":58,"name":"address","nodeType":"ElementaryTypeName","src":"3063:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3029:48:0"}},{"id":66,"nodeType":"ErrorDefinition","src":"3241:42:0","nodes":[],"documentation":{"id":62,"nodeType":"StructuredDocumentation","src":"3084:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"73c6ac6e","name":"ERC721InvalidSender","nameLocation":"3247:19:0","parameters":{"id":65,"nodeType":"ParameterList","parameters":[{"constant":false,"id":64,"mutability":"mutable","name":"sender","nameLocation":"3275:6:0","nodeType":"VariableDeclaration","scope":66,"src":"3267:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":63,"name":"address","nodeType":"ElementaryTypeName","src":"3267:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3266:16:0"}},{"id":71,"nodeType":"ErrorDefinition","src":"3453:46:0","nodes":[],"documentation":{"id":67,"nodeType":"StructuredDocumentation","src":"3289:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"64a0ae92","name":"ERC721InvalidReceiver","nameLocation":"3459:21:0","parameters":{"id":70,"nodeType":"ParameterList","parameters":[{"constant":false,"id":69,"mutability":"mutable","name":"receiver","nameLocation":"3489:8:0","nodeType":"VariableDeclaration","scope":71,"src":"3481:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":68,"name":"address","nodeType":"ElementaryTypeName","src":"3481:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3480:18:0"}},{"id":78,"nodeType":"ErrorDefinition","src":"3757:68:0","nodes":[],"documentation":{"id":72,"nodeType":"StructuredDocumentation","src":"3505:247:0","text":" @dev Indicates a failure with the `operator`’s approval. 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@title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Math.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Math.json
deleted file mode 100644
index b90ebf7..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Math.json
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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/SignedMath.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/SignedMath.json
deleted file mode 100644
index b710972..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/SignedMath.json
+++ /dev/null
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@title ERC721 token receiver interface\n @dev Interface for any contract that wants to support safeTransfers\n from ERC721 asset contracts."},"fullyImplemented":false,"linearizedBaseContracts":[1589],"name":"IERC721Receiver","nameLocation":"27363:15:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1590,"nodeType":"PragmaDirective","src":"28204:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1600,"nodeType":"ContractDefinition","src":"28510:447:0","nodes":[{"id":1599,"nodeType":"FunctionDefinition","src":"28879:76:0","nodes":[],"documentation":{"id":1592,"nodeType":"StructuredDocumentation","src":"28534:340:0","text":" @dev Returns true if this contract implements the interface defined by\n `interfaceId`. See the corresponding\n https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n to learn more about how these ids are created.\n This function call must use less than 30 000 gas."},"functionSelector":"01ffc9a7","implemented":false,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"28888:17:0","parameters":{"id":1595,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1594,"mutability":"mutable","name":"interfaceId","nameLocation":"28913:11:0","nodeType":"VariableDeclaration","scope":1599,"src":"28906:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1593,"name":"bytes4","nodeType":"ElementaryTypeName","src":"28906:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"28905:20:0"},"returnParameters":{"id":1598,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1597,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1599,"src":"28949:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1596,"name":"bool","nodeType":"ElementaryTypeName","src":"28949:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"28948:6:0"},"scope":1600,"stateMutability":"view","virtual":false,"visibility":"external"}],"abstract":false,"baseContracts":[],"canonicalName":"IERC165","contractDependencies":[],"contractKind":"interface","documentation":{"id":1591,"nodeType":"StructuredDocumentation","src":"28230:279:0","text":" @dev Interface of the ERC165 standard, as defined in the\n https://eips.ethereum.org/EIPS/eip-165[EIP].\n Implementers can declare support of contract interfaces, which can then be\n queried by others ({ERC165Checker}).\n For an implementation, see {ERC165}."},"fullyImplemented":false,"linearizedBaseContracts":[1600],"name":"IERC165","nameLocation":"28520:7:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1601,"nodeType":"PragmaDirective","src":"29107:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1621,"nodeType":"ContractDefinition","src":"29613:251:0","nodes":[{"id":1620,"nodeType":"FunctionDefinition","src":"29716:146:0","nodes":[],"body":{"id":1619,"nodeType":"Block","src":"29798:64:0","nodes":[],"statements":[{"expression":{"commonType":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"id":1617,"isConstant":false,"isLValue":false,"isPure":false,"lValueRequested":false,"leftExpression":{"id":1612,"name":"interfaceId","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1607,"src":"29815:11:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"nodeType":"BinaryOperation","operator":"==","rightExpression":{"expression":{"arguments":[{"id":1614,"name":"IERC165","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":1600,"src":"29835:7:0","typeDescriptions":{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}}],"expression":{"argumentTypes":[{"typeIdentifier":"t_type$_t_contract$_IERC165_$1600_$","typeString":"type(contract IERC165)"}],"id":1613,"name":"type","nodeType":"Identifier","overloadedDeclarations":[],"referencedDeclaration":-27,"src":"29830:4:0","typeDescriptions":{"typeIdentifier":"t_function_metatype_pure$__$returns$__$","typeString":"function () pure"}},"id":1615,"isConstant":false,"isLValue":false,"isPure":true,"kind":"functionCall","lValueRequested":false,"nameLocations":[],"names":[],"nodeType":"FunctionCall","src":"29830:13:0","tryCall":false,"typeDescriptions":{"typeIdentifier":"t_magic_meta_type_t_contract$_IERC165_$1600","typeString":"type(contract IERC165)"}},"id":1616,"isConstant":false,"isLValue":false,"isPure":true,"lValueRequested":false,"memberLocation":"29844:11:0","memberName":"interfaceId","nodeType":"MemberAccess","src":"29830:25:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"src":"29815:40:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"functionReturnParameters":1611,"id":1618,"nodeType":"Return","src":"29808:47:0"}]},"baseFunctions":[1599],"documentation":{"id":1605,"nodeType":"StructuredDocumentation","src":"29655:56:0","text":" @dev See {IERC165-supportsInterface}."},"functionSelector":"01ffc9a7","implemented":true,"kind":"function","modifiers":[],"name":"supportsInterface","nameLocation":"29725:17:0","parameters":{"id":1608,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1607,"mutability":"mutable","name":"interfaceId","nameLocation":"29750:11:0","nodeType":"VariableDeclaration","scope":1620,"src":"29743:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"},"typeName":{"id":1606,"name":"bytes4","nodeType":"ElementaryTypeName","src":"29743:6:0","typeDescriptions":{"typeIdentifier":"t_bytes4","typeString":"bytes4"}},"visibility":"internal"}],"src":"29742:20:0"},"returnParameters":{"id":1611,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1610,"mutability":"mutable","name":"","nameLocation":"-1:-1:-1","nodeType":"VariableDeclaration","scope":1620,"src":"29792:4:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1609,"name":"bool","nodeType":"ElementaryTypeName","src":"29792:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"29791:6:0"},"scope":1621,"stateMutability":"view","virtual":true,"visibility":"public"}],"abstract":true,"baseContracts":[{"baseName":{"id":1603,"name":"IERC165","nameLocations":["29641:7:0"],"nodeType":"IdentifierPath","referencedDeclaration":1600,"src":"29641:7:0"},"id":1604,"nodeType":"InheritanceSpecifier","src":"29641:7:0"}],"canonicalName":"ERC165","contractDependencies":[],"contractKind":"contract","documentation":{"id":1602,"nodeType":"StructuredDocumentation","src":"29134:478:0","text":" @dev Implementation of the {IERC165} interface.\n Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n for the additional interface id that will be supported. For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} 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@dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} 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diff --git a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Strings.json b/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Strings.json
deleted file mode 100644
index 7a54d18..0000000
--- a/examples/on-chain_mnist/contracts/out/MNISTNFT_Flattened.sol/Strings.json
+++ /dev/null
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For example:\n ```solidity\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n }\n ```"},"fullyImplemented":true,"linearizedBaseContracts":[1621,1600],"name":"ERC165","nameLocation":"29631:6:0","scope":2845,"usedErrors":[],"usedEvents":[]},{"id":1622,"nodeType":"PragmaDirective","src":"30002:24:0","nodes":[],"literals":["solidity","^","0.8",".20"]},{"id":1735,"nodeType":"ContractDefinition","src":"30097:4659:0","nodes":[{"id":1634,"nodeType":"EventDefinition","src":"30225:82:0","nodes":[],"anonymous":false,"documentation":{"id":1626,"nodeType":"StructuredDocumentation","src":"30132:88:0","text":" @dev Emitted when `tokenId` token is transferred from `from` to `to`."},"eventSelector":"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","name":"Transfer","nameLocation":"30231:8:0","parameters":{"id":1633,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1628,"indexed":true,"mutability":"mutable","name":"from","nameLocation":"30256:4:0","nodeType":"VariableDeclaration","scope":1634,"src":"30240:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1627,"name":"address","nodeType":"ElementaryTypeName","src":"30240:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1630,"indexed":true,"mutability":"mutable","name":"to","nameLocation":"30278:2:0","nodeType":"VariableDeclaration","scope":1634,"src":"30262:18:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1629,"name":"address","nodeType":"ElementaryTypeName","src":"30262:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1632,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30298:7:0","nodeType":"VariableDeclaration","scope":1634,"src":"30282:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1631,"name":"uint256","nodeType":"ElementaryTypeName","src":"30282:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30239:67:0"}},{"id":1643,"nodeType":"EventDefinition","src":"30412:89:0","nodes":[],"anonymous":false,"documentation":{"id":1635,"nodeType":"StructuredDocumentation","src":"30313:94:0","text":" @dev Emitted when `owner` enables `approved` to manage the `tokenId` token."},"eventSelector":"8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925","name":"Approval","nameLocation":"30418:8:0","parameters":{"id":1642,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1637,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30443:5:0","nodeType":"VariableDeclaration","scope":1643,"src":"30427:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1636,"name":"address","nodeType":"ElementaryTypeName","src":"30427:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1639,"indexed":true,"mutability":"mutable","name":"approved","nameLocation":"30466:8:0","nodeType":"VariableDeclaration","scope":1643,"src":"30450:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1638,"name":"address","nodeType":"ElementaryTypeName","src":"30450:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1641,"indexed":true,"mutability":"mutable","name":"tokenId","nameLocation":"30492:7:0","nodeType":"VariableDeclaration","scope":1643,"src":"30476:23:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1640,"name":"uint256","nodeType":"ElementaryTypeName","src":"30476:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30426:74:0"}},{"id":1652,"nodeType":"EventDefinition","src":"30629:85:0","nodes":[],"anonymous":false,"documentation":{"id":1644,"nodeType":"StructuredDocumentation","src":"30507:117:0","text":" @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets."},"eventSelector":"17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31","name":"ApprovalForAll","nameLocation":"30635:14:0","parameters":{"id":1651,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1646,"indexed":true,"mutability":"mutable","name":"owner","nameLocation":"30666:5:0","nodeType":"VariableDeclaration","scope":1652,"src":"30650:21:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1645,"name":"address","nodeType":"ElementaryTypeName","src":"30650:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1648,"indexed":true,"mutability":"mutable","name":"operator","nameLocation":"30689:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30673:24:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1647,"name":"address","nodeType":"ElementaryTypeName","src":"30673:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1650,"indexed":false,"mutability":"mutable","name":"approved","nameLocation":"30704:8:0","nodeType":"VariableDeclaration","scope":1652,"src":"30699:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1649,"name":"bool","nodeType":"ElementaryTypeName","src":"30699:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"30649:64:0"}},{"id":1660,"nodeType":"FunctionDefinition","src":"30801:74:0","nodes":[],"documentation":{"id":1653,"nodeType":"StructuredDocumentation","src":"30720:76:0","text":" @dev Returns the number of tokens in ``owner``'s account."},"functionSelector":"70a08231","implemented":false,"kind":"function","modifiers":[],"name":"balanceOf","nameLocation":"30810:9:0","parameters":{"id":1656,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1655,"mutability":"mutable","name":"owner","nameLocation":"30828:5:0","nodeType":"VariableDeclaration","scope":1660,"src":"30820:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1654,"name":"address","nodeType":"ElementaryTypeName","src":"30820:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"30819:15:0"},"returnParameters":{"id":1659,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1658,"mutability":"mutable","name":"balance","nameLocation":"30866:7:0","nodeType":"VariableDeclaration","scope":1660,"src":"30858:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1657,"name":"uint256","nodeType":"ElementaryTypeName","src":"30858:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"30857:17:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1668,"nodeType":"FunctionDefinition","src":"31017:72:0","nodes":[],"documentation":{"id":1661,"nodeType":"StructuredDocumentation","src":"30881:131:0","text":" @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"6352211e","implemented":false,"kind":"function","modifiers":[],"name":"ownerOf","nameLocation":"31026:7:0","parameters":{"id":1664,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1663,"mutability":"mutable","name":"tokenId","nameLocation":"31042:7:0","nodeType":"VariableDeclaration","scope":1668,"src":"31034:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1662,"name":"uint256","nodeType":"ElementaryTypeName","src":"31034:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"31033:17:0"},"returnParameters":{"id":1667,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1666,"mutability":"mutable","name":"owner","nameLocation":"31082:5:0","nodeType":"VariableDeclaration","scope":1668,"src":"31074:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1665,"name":"address","nodeType":"ElementaryTypeName","src":"31074:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"31073:15:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1680,"nodeType":"FunctionDefinition","src":"31665:99:0","nodes":[],"documentation":{"id":1669,"nodeType":"StructuredDocumentation","src":"31095:565:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"b88d4fde","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"31674:16:0","parameters":{"id":1678,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1671,"mutability":"mutable","name":"from","nameLocation":"31699:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31691:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1670,"name":"address","nodeType":"ElementaryTypeName","src":"31691:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1673,"mutability":"mutable","name":"to","nameLocation":"31713:2:0","nodeType":"VariableDeclaration","scope":1680,"src":"31705:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1672,"name":"address","nodeType":"ElementaryTypeName","src":"31705:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1675,"mutability":"mutable","name":"tokenId","nameLocation":"31725:7:0","nodeType":"VariableDeclaration","scope":1680,"src":"31717:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1674,"name":"uint256","nodeType":"ElementaryTypeName","src":"31717:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":1677,"mutability":"mutable","name":"data","nameLocation":"31749:4:0","nodeType":"VariableDeclaration","scope":1680,"src":"31734:19:0","stateVariable":false,"storageLocation":"calldata","typeDescriptions":{"typeIdentifier":"t_bytes_calldata_ptr","typeString":"bytes"},"typeName":{"id":1676,"name":"bytes","nodeType":"ElementaryTypeName","src":"31734:5:0","typeDescriptions":{"typeIdentifier":"t_bytes_storage_ptr","typeString":"bytes"}},"visibility":"internal"}],"src":"31690:64:0"},"returnParameters":{"id":1679,"nodeType":"ParameterList","parameters":[],"src":"31763:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1690,"nodeType":"FunctionDefinition","src":"32480:78:0","nodes":[],"documentation":{"id":1681,"nodeType":"StructuredDocumentation","src":"31770:705:0","text":" @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must have been allowed to move this token by either {approve} or\n   {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon\n   a safe transfer.\n Emits a {Transfer} event."},"functionSelector":"42842e0e","implemented":false,"kind":"function","modifiers":[],"name":"safeTransferFrom","nameLocation":"32489:16:0","parameters":{"id":1688,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1683,"mutability":"mutable","name":"from","nameLocation":"32514:4:0","nodeType":"VariableDeclaration","scope":1690,"src":"32506:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1682,"name":"address","nodeType":"ElementaryTypeName","src":"32506:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1685,"mutability":"mutable","name":"to","nameLocation":"32528:2:0","nodeType":"VariableDeclaration","scope":1690,"src":"32520:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1684,"name":"address","nodeType":"ElementaryTypeName","src":"32520:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1687,"mutability":"mutable","name":"tokenId","nameLocation":"32540:7:0","nodeType":"VariableDeclaration","scope":1690,"src":"32532:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1686,"name":"uint256","nodeType":"ElementaryTypeName","src":"32532:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"32505:43:0"},"returnParameters":{"id":1689,"nodeType":"ParameterList","parameters":[],"src":"32557:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1700,"nodeType":"FunctionDefinition","src":"33301:74:0","nodes":[],"documentation":{"id":1691,"nodeType":"StructuredDocumentation","src":"32564:732:0","text":" @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n understand this adds an external call which potentially creates a reentrancy vulnerability.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event."},"functionSelector":"23b872dd","implemented":false,"kind":"function","modifiers":[],"name":"transferFrom","nameLocation":"33310:12:0","parameters":{"id":1698,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1693,"mutability":"mutable","name":"from","nameLocation":"33331:4:0","nodeType":"VariableDeclaration","scope":1700,"src":"33323:12:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1692,"name":"address","nodeType":"ElementaryTypeName","src":"33323:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1695,"mutability":"mutable","name":"to","nameLocation":"33345:2:0","nodeType":"VariableDeclaration","scope":1700,"src":"33337:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1694,"name":"address","nodeType":"ElementaryTypeName","src":"33337:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1697,"mutability":"mutable","name":"tokenId","nameLocation":"33357:7:0","nodeType":"VariableDeclaration","scope":1700,"src":"33349:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1696,"name":"uint256","nodeType":"ElementaryTypeName","src":"33349:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33322:43:0"},"returnParameters":{"id":1699,"nodeType":"ParameterList","parameters":[],"src":"33374:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1708,"nodeType":"FunctionDefinition","src":"33838:55:0","nodes":[],"documentation":{"id":1701,"nodeType":"StructuredDocumentation","src":"33381:452:0","text":" @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event."},"functionSelector":"095ea7b3","implemented":false,"kind":"function","modifiers":[],"name":"approve","nameLocation":"33847:7:0","parameters":{"id":1706,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1703,"mutability":"mutable","name":"to","nameLocation":"33863:2:0","nodeType":"VariableDeclaration","scope":1708,"src":"33855:10:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1702,"name":"address","nodeType":"ElementaryTypeName","src":"33855:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1705,"mutability":"mutable","name":"tokenId","nameLocation":"33875:7:0","nodeType":"VariableDeclaration","scope":1708,"src":"33867:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1704,"name":"uint256","nodeType":"ElementaryTypeName","src":"33867:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"33854:29:0"},"returnParameters":{"id":1707,"nodeType":"ParameterList","parameters":[],"src":"33892:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1716,"nodeType":"FunctionDefinition","src":"34219:69:0","nodes":[],"documentation":{"id":1709,"nodeType":"StructuredDocumentation","src":"33899:315:0","text":" @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the address zero.\n Emits an {ApprovalForAll} event."},"functionSelector":"a22cb465","implemented":false,"kind":"function","modifiers":[],"name":"setApprovalForAll","nameLocation":"34228:17:0","parameters":{"id":1714,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1711,"mutability":"mutable","name":"operator","nameLocation":"34254:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34246:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1710,"name":"address","nodeType":"ElementaryTypeName","src":"34246:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":1713,"mutability":"mutable","name":"approved","nameLocation":"34269:8:0","nodeType":"VariableDeclaration","scope":1716,"src":"34264:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"},"typeName":{"id":1712,"name":"bool","nodeType":"ElementaryTypeName","src":"34264:4:0","typeDescriptions":{"typeIdentifier":"t_bool","typeString":"bool"}},"visibility":"internal"}],"src":"34245:33:0"},"returnParameters":{"id":1715,"nodeType":"ParameterList","parameters":[],"src":"34287:0:0"},"scope":1735,"stateMutability":"nonpayable","virtual":false,"visibility":"external"},{"id":1724,"nodeType":"FunctionDefinition","src":"34438:79:0","nodes":[],"documentation":{"id":1717,"nodeType":"StructuredDocumentation","src":"34294:139:0","text":" @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist."},"functionSelector":"081812fc","implemented":false,"kind":"function","modifiers":[],"name":"getApproved","nameLocation":"34447:11:0","parameters":{"id":1720,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1719,"mutability":"mutable","name":"tokenId","nameLocation":"34467:7:0","nodeType":"VariableDeclaration","scope":1724,"src":"34459:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":1718,"name":"uint256","nodeType":"ElementaryTypeName","src":"34459:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"34458:17:0"},"returnParameters":{"id":1723,"nodeType":"ParameterList","parameters":[{"constant":false,"id":1722,"mutability":"mutable","name":"operator","nameLocation":"34507:8:0","nodeType":"VariableDeclaration","scope":1724,"src":"34499:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":1721,"name":"address","nodeType":"ElementaryTypeName","src":"34499:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"34498:18:0"},"scope":1735,"stateMutability":"view","virtual":false,"visibility":"external"},{"id":1734,"nodeType":"FunctionDefinition","src":"34666:88:0","nodes":[],"documentation":{"id":1725,"nodeType":"StructuredDocumentation","src":"34523:138:0","text":" 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diff --git a/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Context.json b/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Context.json
deleted file mode 100644
index 7862c13..0000000
--- a/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Context.json
+++ /dev/null
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diff --git a/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/MotemaPool.json b/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/MotemaPool.json
deleted file mode 100644
index 028cb38..0000000
--- a/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/MotemaPool.json
+++ /dev/null
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diff --git a/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Ownable.json b/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Ownable.json
deleted file mode 100644
index 772426e..0000000
--- a/examples/on-chain_mnist/contracts/out/MotemaPool_flattened.sol/Ownable.json
+++ /dev/null
@@ -1 +0,0 @@
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diff --git a/examples/on-chain_mnist/contracts/out/SignedMath.sol/SignedMath.json b/examples/on-chain_mnist/contracts/out/SignedMath.sol/SignedMath.json
deleted file mode 100644
index 8af103c..0000000
--- a/examples/on-chain_mnist/contracts/out/SignedMath.sol/SignedMath.json
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diff --git a/examples/on-chain_mnist/contracts/out/Strings.sol/Strings.json b/examples/on-chain_mnist/contracts/out/Strings.sol/Strings.json
deleted file mode 100644
index 9d1c462..0000000
--- a/examples/on-chain_mnist/contracts/out/Strings.sol/Strings.json
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diff --git a/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC1155Errors.json b/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC1155Errors.json
deleted file mode 100644
index 1cbbc92..0000000
--- a/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC1155Errors.json
+++ /dev/null
@@ -1 +0,0 @@
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Used in transfers.\n @param operator Address that may be allowed to operate on tokens without being their owner.\n @param owner Address of the current owner of a token."},"errorSelector":"e237d922","name":"ERC1155MissingApprovalForAll","nameLocation":"5616:28:0","parameters":{"id":117,"nodeType":"ParameterList","parameters":[{"constant":false,"id":114,"mutability":"mutable","name":"operator","nameLocation":"5653:8:0","nodeType":"VariableDeclaration","scope":118,"src":"5645:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":113,"name":"address","nodeType":"ElementaryTypeName","src":"5645:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":116,"mutability":"mutable","name":"owner","nameLocation":"5671:5:0","nodeType":"VariableDeclaration","scope":118,"src":"5663:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":115,"name":"address","nodeType":"ElementaryTypeName","src":"5663:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5644:33:0"}},{"id":123,"nodeType":"ErrorDefinition","src":"5863:47:0","nodes":[],"documentation":{"id":119,"nodeType":"StructuredDocumentation","src":"5684:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"3e31884e","name":"ERC1155InvalidApprover","nameLocation":"5869:22:0","parameters":{"id":122,"nodeType":"ParameterList","parameters":[{"constant":false,"id":121,"mutability":"mutable","name":"approver","nameLocation":"5900:8:0","nodeType":"VariableDeclaration","scope":123,"src":"5892:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":120,"name":"address","nodeType":"ElementaryTypeName","src":"5892:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5891:18:0"}},{"id":128,"nodeType":"ErrorDefinition","src":"6118:47:0","nodes":[],"documentation":{"id":124,"nodeType":"StructuredDocumentation","src":"5916:197:0","text":" @dev Indicates a failure with the `operator` to be approved. Used in approvals.\n @param operator Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"ced3e100","name":"ERC1155InvalidOperator","nameLocation":"6124:22:0","parameters":{"id":127,"nodeType":"ParameterList","parameters":[{"constant":false,"id":126,"mutability":"mutable","name":"operator","nameLocation":"6155:8:0","nodeType":"VariableDeclaration","scope":128,"src":"6147:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":125,"name":"address","nodeType":"ElementaryTypeName","src":"6147:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"6146:18:0"}},{"id":135,"nodeType":"ErrorDefinition","src":"6456:73:0","nodes":[],"documentation":{"id":129,"nodeType":"StructuredDocumentation","src":"6171:280:0","text":" @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.\n Used in batch transfers.\n @param idsLength Length of the array of token identifiers\n @param valuesLength Length of the array of token amounts"},"errorSelector":"5b059991","name":"ERC1155InvalidArrayLength","nameLocation":"6462:25:0","parameters":{"id":134,"nodeType":"ParameterList","parameters":[{"constant":false,"id":131,"mutability":"mutable","name":"idsLength","nameLocation":"6496:9:0","nodeType":"VariableDeclaration","scope":135,"src":"6488:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":130,"name":"uint256","nodeType":"ElementaryTypeName","src":"6488:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":133,"mutability":"mutable","name":"valuesLength","nameLocation":"6515:12:0","nodeType":"VariableDeclaration","scope":135,"src":"6507:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":132,"name":"uint256","nodeType":"ElementaryTypeName","src":"6507:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"6487:41:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC1155Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":90,"nodeType":"StructuredDocumentation","src":"4280:143:0","text":" @dev Standard ERC1155 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[136],"name":"IERC1155Errors","nameLocation":"4434:14:0","scope":137,"usedErrors":[101,106,111,118,123,128,135],"usedEvents":[]}],"license":"MIT"},"id":0}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC20Errors.json b/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC20Errors.json
deleted file mode 100644
index 976f69a..0000000
--- a/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC20Errors.json
+++ /dev/null
@@ -1 +0,0 @@
-{"abi":[{"type":"error","name":"ERC20InsufficientAllowance","inputs":[{"name":"spender","type":"address","internalType":"address"},{"name":"allowance","type":"uint256","internalType":"uint256"},{"name":"needed","type":"uint256","internalType":"uint256"}]},{"type":"error","name":"ERC20InsufficientBalance","inputs":[{"name":"sender","type":"address","internalType":"address"},{"name":"balance","type":"uint256","internalType":"uint256"},{"name":"needed","type":"uint256","internalType":"uint256"}]},{"type":"error","name":"ERC20InvalidApprover","inputs":[{"name":"approver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC20InvalidReceiver","inputs":[{"name":"receiver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC20InvalidSender","inputs":[{"name":"sender","type":"address","internalType":"address"}]},{"type":"error","name":"ERC20InvalidSpender","inputs":[{"name":"spender","type":"address","internalType":"address"}]}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.24+commit.e11b9ed9\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"allowance\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"needed\",\"type\":\"uint256\"}],\"name\":\"ERC20InsufficientAllowance\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"balance\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"needed\",\"type\":\"uint256\"}],\"name\":\"ERC20InsufficientBalance\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"approver\",\"type\":\"address\"}],\"name\":\"ERC20InvalidApprover\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"receiver\",\"type\":\"address\"}],\"name\":\"ERC20InvalidReceiver\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"ERC20InvalidSender\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"ERC20InvalidSpender\",\"type\":\"error\"}],\"devdoc\":{\"details\":\"Standard ERC20 Errors Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.\",\"errors\":{\"ERC20InsufficientAllowance(address,uint256,uint256)\":[{\"details\":\"Indicates a failure with the `spender`\\u2019s `allowance`. Used in transfers.\",\"params\":{\"allowance\":\"Amount of tokens a `spender` is allowed to operate with.\",\"needed\":\"Minimum amount required to perform a transfer.\",\"spender\":\"Address that may be allowed to operate on tokens without being their owner.\"}}],\"ERC20InsufficientBalance(address,uint256,uint256)\":[{\"details\":\"Indicates an error related to the current `balance` of a `sender`. Used in transfers.\",\"params\":{\"balance\":\"Current balance for the interacting account.\",\"needed\":\"Minimum amount required to perform a transfer.\",\"sender\":\"Address whose tokens are being transferred.\"}}],\"ERC20InvalidApprover(address)\":[{\"details\":\"Indicates a failure with the `approver` of a token to be approved. Used in approvals.\",\"params\":{\"approver\":\"Address initiating an approval operation.\"}}],\"ERC20InvalidReceiver(address)\":[{\"details\":\"Indicates a failure with the token `receiver`. 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Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"96c6fd1e","name":"ERC20InvalidSender","nameLocation":"870:18:0","parameters":{"id":15,"nodeType":"ParameterList","parameters":[{"constant":false,"id":14,"mutability":"mutable","name":"sender","nameLocation":"897:6:0","nodeType":"VariableDeclaration","scope":16,"src":"889:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":13,"name":"address","nodeType":"ElementaryTypeName","src":"889:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"888:16:0"}},{"id":21,"nodeType":"ErrorDefinition","src":"1075:45:0","nodes":[],"documentation":{"id":17,"nodeType":"StructuredDocumentation","src":"911:159:0","text":" @dev Indicates a failure with the token `receiver`. 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Used in transfers.\n @param spender Address that may be allowed to operate on tokens without being their owner.\n @param allowance Amount of tokens a `spender` is allowed to operate with.\n @param needed Minimum amount required to perform a transfer."},"errorSelector":"fb8f41b2","name":"ERC20InsufficientAllowance","nameLocation":"1482:26:0","parameters":{"id":29,"nodeType":"ParameterList","parameters":[{"constant":false,"id":24,"mutability":"mutable","name":"spender","nameLocation":"1517:7:0","nodeType":"VariableDeclaration","scope":30,"src":"1509:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":23,"name":"address","nodeType":"ElementaryTypeName","src":"1509:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":26,"mutability":"mutable","name":"allowance","nameLocation":"1534:9:0","nodeType":"VariableDeclaration","scope":30,"src":"1526:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":25,"name":"uint256","nodeType":"ElementaryTypeName","src":"1526:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":28,"mutability":"mutable","name":"needed","nameLocation":"1553:6:0","nodeType":"VariableDeclaration","scope":30,"src":"1545:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":27,"name":"uint256","nodeType":"ElementaryTypeName","src":"1545:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"1508:52:0"}},{"id":35,"nodeType":"ErrorDefinition","src":"1746:45:0","nodes":[],"documentation":{"id":31,"nodeType":"StructuredDocumentation","src":"1567:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. 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Used in approvals.\n @param spender Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"94280d62","name":"ERC20InvalidSpender","nameLocation":"2003:19:0","parameters":{"id":39,"nodeType":"ParameterList","parameters":[{"constant":false,"id":38,"mutability":"mutable","name":"spender","nameLocation":"2031:7:0","nodeType":"VariableDeclaration","scope":40,"src":"2023:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":37,"name":"address","nodeType":"ElementaryTypeName","src":"2023:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2022:17:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC20Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":2,"nodeType":"StructuredDocumentation","src":"138:139:0","text":" @dev Standard ERC20 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[41],"name":"IERC20Errors","nameLocation":"288:12:0","scope":137,"usedErrors":[11,16,21,30,35,40],"usedEvents":[]},{"id":89,"nodeType":"ContractDefinition","src":"2186:2092:0","nodes":[{"id":47,"nodeType":"ErrorDefinition","src":"2440:40:0","nodes":[],"documentation":{"id":43,"nodeType":"StructuredDocumentation","src":"2216:219:0","text":" @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.\n Used in balance queries.\n @param owner Address of the current owner of a token."},"errorSelector":"89c62b64","name":"ERC721InvalidOwner","nameLocation":"2446:18:0","parameters":{"id":46,"nodeType":"ParameterList","parameters":[{"constant":false,"id":45,"mutability":"mutable","name":"owner","nameLocation":"2473:5:0","nodeType":"VariableDeclaration","scope":47,"src":"2465:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":44,"name":"address","nodeType":"ElementaryTypeName","src":"2465:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2464:15:0"}},{"id":52,"nodeType":"ErrorDefinition","src":"2623:46:0","nodes":[],"documentation":{"id":48,"nodeType":"StructuredDocumentation","src":"2486:132:0","text":" @dev Indicates a `tokenId` whose `owner` is the zero address.\n @param tokenId Identifier number of a token."},"errorSelector":"7e273289","name":"ERC721NonexistentToken","nameLocation":"2629:22:0","parameters":{"id":51,"nodeType":"ParameterList","parameters":[{"constant":false,"id":50,"mutability":"mutable","name":"tokenId","nameLocation":"2660:7:0","nodeType":"VariableDeclaration","scope":52,"src":"2652:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":49,"name":"uint256","nodeType":"ElementaryTypeName","src":"2652:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"2651:17:0"}},{"id":61,"nodeType":"ErrorDefinition","src":"2969:75:0","nodes":[],"documentation":{"id":53,"nodeType":"StructuredDocumentation","src":"2675:289:0","text":" @dev Indicates an error related to the ownership over a particular token. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param tokenId Identifier number of a token.\n @param owner Address of the current owner of a token."},"errorSelector":"64283d7b","name":"ERC721IncorrectOwner","nameLocation":"2975:20:0","parameters":{"id":60,"nodeType":"ParameterList","parameters":[{"constant":false,"id":55,"mutability":"mutable","name":"sender","nameLocation":"3004:6:0","nodeType":"VariableDeclaration","scope":61,"src":"2996:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":54,"name":"address","nodeType":"ElementaryTypeName","src":"2996:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":57,"mutability":"mutable","name":"tokenId","nameLocation":"3020:7:0","nodeType":"VariableDeclaration","scope":61,"src":"3012:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":56,"name":"uint256","nodeType":"ElementaryTypeName","src":"3012:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":59,"mutability":"mutable","name":"owner","nameLocation":"3037:5:0","nodeType":"VariableDeclaration","scope":61,"src":"3029:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":58,"name":"address","nodeType":"ElementaryTypeName","src":"3029:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"2995:48:0"}},{"id":66,"nodeType":"ErrorDefinition","src":"3207:42:0","nodes":[],"documentation":{"id":62,"nodeType":"StructuredDocumentation","src":"3050:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"73c6ac6e","name":"ERC721InvalidSender","nameLocation":"3213:19:0","parameters":{"id":65,"nodeType":"ParameterList","parameters":[{"constant":false,"id":64,"mutability":"mutable","name":"sender","nameLocation":"3241:6:0","nodeType":"VariableDeclaration","scope":66,"src":"3233:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":63,"name":"address","nodeType":"ElementaryTypeName","src":"3233:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3232:16:0"}},{"id":71,"nodeType":"ErrorDefinition","src":"3419:46:0","nodes":[],"documentation":{"id":67,"nodeType":"StructuredDocumentation","src":"3255:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"64a0ae92","name":"ERC721InvalidReceiver","nameLocation":"3425:21:0","parameters":{"id":70,"nodeType":"ParameterList","parameters":[{"constant":false,"id":69,"mutability":"mutable","name":"receiver","nameLocation":"3455:8:0","nodeType":"VariableDeclaration","scope":71,"src":"3447:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":68,"name":"address","nodeType":"ElementaryTypeName","src":"3447:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"3446:18:0"}},{"id":78,"nodeType":"ErrorDefinition","src":"3723:68:0","nodes":[],"documentation":{"id":72,"nodeType":"StructuredDocumentation","src":"3471:247:0","text":" @dev Indicates a failure with the `operator`’s approval. Used in transfers.\n @param operator Address that may be allowed to operate on tokens without being their owner.\n @param tokenId Identifier number of a token."},"errorSelector":"177e802f","name":"ERC721InsufficientApproval","nameLocation":"3729:26:0","parameters":{"id":77,"nodeType":"ParameterList","parameters":[{"constant":false,"id":74,"mutability":"mutable","name":"operator","nameLocation":"3764:8:0","nodeType":"VariableDeclaration","scope":78,"src":"3756:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":73,"name":"address","nodeType":"ElementaryTypeName","src":"3756:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":76,"mutability":"mutable","name":"tokenId","nameLocation":"3782:7:0","nodeType":"VariableDeclaration","scope":78,"src":"3774:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":75,"name":"uint256","nodeType":"ElementaryTypeName","src":"3774:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"3755:35:0"}},{"id":83,"nodeType":"ErrorDefinition","src":"3976:46:0","nodes":[],"documentation":{"id":79,"nodeType":"StructuredDocumentation","src":"3797:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"a9fbf51f","name":"ERC721InvalidApprover","nameLocation":"3982:21:0","parameters":{"id":82,"nodeType":"ParameterList","parameters":[{"constant":false,"id":81,"mutability":"mutable","name":"approver","nameLocation":"4012:8:0","nodeType":"VariableDeclaration","scope":83,"src":"4004:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":80,"name":"address","nodeType":"ElementaryTypeName","src":"4004:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"4003:18:0"}},{"id":88,"nodeType":"ErrorDefinition","src":"4230:46:0","nodes":[],"documentation":{"id":84,"nodeType":"StructuredDocumentation","src":"4028:197:0","text":" @dev Indicates a failure with the `operator` to be approved. Used in approvals.\n @param operator Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"5b08ba18","name":"ERC721InvalidOperator","nameLocation":"4236:21:0","parameters":{"id":87,"nodeType":"ParameterList","parameters":[{"constant":false,"id":86,"mutability":"mutable","name":"operator","nameLocation":"4266:8:0","nodeType":"VariableDeclaration","scope":88,"src":"4258:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":85,"name":"address","nodeType":"ElementaryTypeName","src":"4258:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"4257:18:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC721Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":42,"nodeType":"StructuredDocumentation","src":"2044:141:0","text":" @dev Standard ERC721 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[89],"name":"IERC721Errors","nameLocation":"2196:13:0","scope":137,"usedErrors":[47,52,61,66,71,78,83,88],"usedEvents":[]},{"id":136,"nodeType":"ContractDefinition","src":"4424:2107:0","nodes":[{"id":101,"nodeType":"ErrorDefinition","src":"4821:99:0","nodes":[],"documentation":{"id":91,"nodeType":"StructuredDocumentation","src":"4455:361:0","text":" @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param balance Current balance for the interacting account.\n @param needed Minimum amount required to perform a transfer.\n @param tokenId Identifier number of a token."},"errorSelector":"03dee4c5","name":"ERC1155InsufficientBalance","nameLocation":"4827:26:0","parameters":{"id":100,"nodeType":"ParameterList","parameters":[{"constant":false,"id":93,"mutability":"mutable","name":"sender","nameLocation":"4862:6:0","nodeType":"VariableDeclaration","scope":101,"src":"4854:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":92,"name":"address","nodeType":"ElementaryTypeName","src":"4854:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":95,"mutability":"mutable","name":"balance","nameLocation":"4878:7:0","nodeType":"VariableDeclaration","scope":101,"src":"4870:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":94,"name":"uint256","nodeType":"ElementaryTypeName","src":"4870:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":97,"mutability":"mutable","name":"needed","nameLocation":"4895:6:0","nodeType":"VariableDeclaration","scope":101,"src":"4887:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":96,"name":"uint256","nodeType":"ElementaryTypeName","src":"4887:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":99,"mutability":"mutable","name":"tokenId","nameLocation":"4911:7:0","nodeType":"VariableDeclaration","scope":101,"src":"4903:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":98,"name":"uint256","nodeType":"ElementaryTypeName","src":"4903:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"4853:66:0"}},{"id":106,"nodeType":"ErrorDefinition","src":"5083:43:0","nodes":[],"documentation":{"id":102,"nodeType":"StructuredDocumentation","src":"4926:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"01a83514","name":"ERC1155InvalidSender","nameLocation":"5089:20:0","parameters":{"id":105,"nodeType":"ParameterList","parameters":[{"constant":false,"id":104,"mutability":"mutable","name":"sender","nameLocation":"5118:6:0","nodeType":"VariableDeclaration","scope":106,"src":"5110:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":103,"name":"address","nodeType":"ElementaryTypeName","src":"5110:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5109:16:0"}},{"id":111,"nodeType":"ErrorDefinition","src":"5296:47:0","nodes":[],"documentation":{"id":107,"nodeType":"StructuredDocumentation","src":"5132:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"57f447ce","name":"ERC1155InvalidReceiver","nameLocation":"5302:22:0","parameters":{"id":110,"nodeType":"ParameterList","parameters":[{"constant":false,"id":109,"mutability":"mutable","name":"receiver","nameLocation":"5333:8:0","nodeType":"VariableDeclaration","scope":111,"src":"5325:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":108,"name":"address","nodeType":"ElementaryTypeName","src":"5325:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5324:18:0"}},{"id":118,"nodeType":"ErrorDefinition","src":"5610:68:0","nodes":[],"documentation":{"id":112,"nodeType":"StructuredDocumentation","src":"5349:256:0","text":" @dev Indicates a failure with the `operator`’s approval. Used in transfers.\n @param operator Address that may be allowed to operate on tokens without being their owner.\n @param owner Address of the current owner of a token."},"errorSelector":"e237d922","name":"ERC1155MissingApprovalForAll","nameLocation":"5616:28:0","parameters":{"id":117,"nodeType":"ParameterList","parameters":[{"constant":false,"id":114,"mutability":"mutable","name":"operator","nameLocation":"5653:8:0","nodeType":"VariableDeclaration","scope":118,"src":"5645:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":113,"name":"address","nodeType":"ElementaryTypeName","src":"5645:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":116,"mutability":"mutable","name":"owner","nameLocation":"5671:5:0","nodeType":"VariableDeclaration","scope":118,"src":"5663:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":115,"name":"address","nodeType":"ElementaryTypeName","src":"5663:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5644:33:0"}},{"id":123,"nodeType":"ErrorDefinition","src":"5863:47:0","nodes":[],"documentation":{"id":119,"nodeType":"StructuredDocumentation","src":"5684:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"3e31884e","name":"ERC1155InvalidApprover","nameLocation":"5869:22:0","parameters":{"id":122,"nodeType":"ParameterList","parameters":[{"constant":false,"id":121,"mutability":"mutable","name":"approver","nameLocation":"5900:8:0","nodeType":"VariableDeclaration","scope":123,"src":"5892:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":120,"name":"address","nodeType":"ElementaryTypeName","src":"5892:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5891:18:0"}},{"id":128,"nodeType":"ErrorDefinition","src":"6118:47:0","nodes":[],"documentation":{"id":124,"nodeType":"StructuredDocumentation","src":"5916:197:0","text":" @dev Indicates a failure with the `operator` to be approved. Used in approvals.\n @param operator Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"ced3e100","name":"ERC1155InvalidOperator","nameLocation":"6124:22:0","parameters":{"id":127,"nodeType":"ParameterList","parameters":[{"constant":false,"id":126,"mutability":"mutable","name":"operator","nameLocation":"6155:8:0","nodeType":"VariableDeclaration","scope":128,"src":"6147:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":125,"name":"address","nodeType":"ElementaryTypeName","src":"6147:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"6146:18:0"}},{"id":135,"nodeType":"ErrorDefinition","src":"6456:73:0","nodes":[],"documentation":{"id":129,"nodeType":"StructuredDocumentation","src":"6171:280:0","text":" @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.\n Used in batch transfers.\n @param idsLength Length of the array of token identifiers\n @param valuesLength Length of the array of token amounts"},"errorSelector":"5b059991","name":"ERC1155InvalidArrayLength","nameLocation":"6462:25:0","parameters":{"id":134,"nodeType":"ParameterList","parameters":[{"constant":false,"id":131,"mutability":"mutable","name":"idsLength","nameLocation":"6496:9:0","nodeType":"VariableDeclaration","scope":135,"src":"6488:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":130,"name":"uint256","nodeType":"ElementaryTypeName","src":"6488:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":133,"mutability":"mutable","name":"valuesLength","nameLocation":"6515:12:0","nodeType":"VariableDeclaration","scope":135,"src":"6507:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":132,"name":"uint256","nodeType":"ElementaryTypeName","src":"6507:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"6487:41:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC1155Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":90,"nodeType":"StructuredDocumentation","src":"4280:143:0","text":" @dev Standard ERC1155 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[136],"name":"IERC1155Errors","nameLocation":"4434:14:0","scope":137,"usedErrors":[101,106,111,118,123,128,135],"usedEvents":[]}],"license":"MIT"},"id":0}
\ No newline at end of file
diff --git a/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC721Errors.json b/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC721Errors.json
deleted file mode 100644
index 8e04809..0000000
--- a/examples/on-chain_mnist/contracts/out/draft-IERC6093.sol/IERC721Errors.json
+++ /dev/null
@@ -1 +0,0 @@
-{"abi":[{"type":"error","name":"ERC721IncorrectOwner","inputs":[{"name":"sender","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"},{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InsufficientApproval","inputs":[{"name":"operator","type":"address","internalType":"address"},{"name":"tokenId","type":"uint256","internalType":"uint256"}]},{"type":"error","name":"ERC721InvalidApprover","inputs":[{"name":"approver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOperator","inputs":[{"name":"operator","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidOwner","inputs":[{"name":"owner","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidReceiver","inputs":[{"name":"receiver","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721InvalidSender","inputs":[{"name":"sender","type":"address","internalType":"address"}]},{"type":"error","name":"ERC721NonexistentToken","inputs":[{"name":"tokenId","type":"uint256","internalType":"uint256"}]}],"bytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"deployedBytecode":{"object":"0x","sourceMap":"","linkReferences":{}},"methodIdentifiers":{},"rawMetadata":"{\"compiler\":{\"version\":\"0.8.24+commit.e11b9ed9\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"ERC721IncorrectOwner\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ERC721InsufficientApproval\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"approver\",\"type\":\"address\"}],\"name\":\"ERC721InvalidApprover\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"ERC721InvalidOperator\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"ERC721InvalidOwner\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"receiver\",\"type\":\"address\"}],\"name\":\"ERC721InvalidReceiver\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"ERC721InvalidSender\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ERC721NonexistentToken\",\"type\":\"error\"}],\"devdoc\":{\"details\":\"Standard ERC721 Errors Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.\",\"errors\":{\"ERC721IncorrectOwner(address,uint256,address)\":[{\"details\":\"Indicates an error related to the ownership over a particular token. 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Used in transfers.\n @param sender Address whose tokens are being transferred.\n @param balance Current balance for the interacting account.\n @param needed Minimum amount required to perform a transfer.\n @param tokenId Identifier number of a token."},"errorSelector":"03dee4c5","name":"ERC1155InsufficientBalance","nameLocation":"4827:26:0","parameters":{"id":100,"nodeType":"ParameterList","parameters":[{"constant":false,"id":93,"mutability":"mutable","name":"sender","nameLocation":"4862:6:0","nodeType":"VariableDeclaration","scope":101,"src":"4854:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":92,"name":"address","nodeType":"ElementaryTypeName","src":"4854:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":95,"mutability":"mutable","name":"balance","nameLocation":"4878:7:0","nodeType":"VariableDeclaration","scope":101,"src":"4870:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":94,"name":"uint256","nodeType":"ElementaryTypeName","src":"4870:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":97,"mutability":"mutable","name":"needed","nameLocation":"4895:6:0","nodeType":"VariableDeclaration","scope":101,"src":"4887:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":96,"name":"uint256","nodeType":"ElementaryTypeName","src":"4887:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":99,"mutability":"mutable","name":"tokenId","nameLocation":"4911:7:0","nodeType":"VariableDeclaration","scope":101,"src":"4903:15:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":98,"name":"uint256","nodeType":"ElementaryTypeName","src":"4903:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"4853:66:0"}},{"id":106,"nodeType":"ErrorDefinition","src":"5083:43:0","nodes":[],"documentation":{"id":102,"nodeType":"StructuredDocumentation","src":"4926:152:0","text":" @dev Indicates a failure with the token `sender`. Used in transfers.\n @param sender Address whose tokens are being transferred."},"errorSelector":"01a83514","name":"ERC1155InvalidSender","nameLocation":"5089:20:0","parameters":{"id":105,"nodeType":"ParameterList","parameters":[{"constant":false,"id":104,"mutability":"mutable","name":"sender","nameLocation":"5118:6:0","nodeType":"VariableDeclaration","scope":106,"src":"5110:14:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":103,"name":"address","nodeType":"ElementaryTypeName","src":"5110:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5109:16:0"}},{"id":111,"nodeType":"ErrorDefinition","src":"5296:47:0","nodes":[],"documentation":{"id":107,"nodeType":"StructuredDocumentation","src":"5132:159:0","text":" @dev Indicates a failure with the token `receiver`. Used in transfers.\n @param receiver Address to which tokens are being transferred."},"errorSelector":"57f447ce","name":"ERC1155InvalidReceiver","nameLocation":"5302:22:0","parameters":{"id":110,"nodeType":"ParameterList","parameters":[{"constant":false,"id":109,"mutability":"mutable","name":"receiver","nameLocation":"5333:8:0","nodeType":"VariableDeclaration","scope":111,"src":"5325:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":108,"name":"address","nodeType":"ElementaryTypeName","src":"5325:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5324:18:0"}},{"id":118,"nodeType":"ErrorDefinition","src":"5610:68:0","nodes":[],"documentation":{"id":112,"nodeType":"StructuredDocumentation","src":"5349:256:0","text":" @dev Indicates a failure with the `operator`’s approval. Used in transfers.\n @param operator Address that may be allowed to operate on tokens without being their owner.\n @param owner Address of the current owner of a token."},"errorSelector":"e237d922","name":"ERC1155MissingApprovalForAll","nameLocation":"5616:28:0","parameters":{"id":117,"nodeType":"ParameterList","parameters":[{"constant":false,"id":114,"mutability":"mutable","name":"operator","nameLocation":"5653:8:0","nodeType":"VariableDeclaration","scope":118,"src":"5645:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":113,"name":"address","nodeType":"ElementaryTypeName","src":"5645:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"},{"constant":false,"id":116,"mutability":"mutable","name":"owner","nameLocation":"5671:5:0","nodeType":"VariableDeclaration","scope":118,"src":"5663:13:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":115,"name":"address","nodeType":"ElementaryTypeName","src":"5663:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5644:33:0"}},{"id":123,"nodeType":"ErrorDefinition","src":"5863:47:0","nodes":[],"documentation":{"id":119,"nodeType":"StructuredDocumentation","src":"5684:174:0","text":" @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.\n @param approver Address initiating an approval operation."},"errorSelector":"3e31884e","name":"ERC1155InvalidApprover","nameLocation":"5869:22:0","parameters":{"id":122,"nodeType":"ParameterList","parameters":[{"constant":false,"id":121,"mutability":"mutable","name":"approver","nameLocation":"5900:8:0","nodeType":"VariableDeclaration","scope":123,"src":"5892:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":120,"name":"address","nodeType":"ElementaryTypeName","src":"5892:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"5891:18:0"}},{"id":128,"nodeType":"ErrorDefinition","src":"6118:47:0","nodes":[],"documentation":{"id":124,"nodeType":"StructuredDocumentation","src":"5916:197:0","text":" @dev Indicates a failure with the `operator` to be approved. Used in approvals.\n @param operator Address that may be allowed to operate on tokens without being their owner."},"errorSelector":"ced3e100","name":"ERC1155InvalidOperator","nameLocation":"6124:22:0","parameters":{"id":127,"nodeType":"ParameterList","parameters":[{"constant":false,"id":126,"mutability":"mutable","name":"operator","nameLocation":"6155:8:0","nodeType":"VariableDeclaration","scope":128,"src":"6147:16:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"},"typeName":{"id":125,"name":"address","nodeType":"ElementaryTypeName","src":"6147:7:0","stateMutability":"nonpayable","typeDescriptions":{"typeIdentifier":"t_address","typeString":"address"}},"visibility":"internal"}],"src":"6146:18:0"}},{"id":135,"nodeType":"ErrorDefinition","src":"6456:73:0","nodes":[],"documentation":{"id":129,"nodeType":"StructuredDocumentation","src":"6171:280:0","text":" @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.\n Used in batch transfers.\n @param idsLength Length of the array of token identifiers\n @param valuesLength Length of the array of token amounts"},"errorSelector":"5b059991","name":"ERC1155InvalidArrayLength","nameLocation":"6462:25:0","parameters":{"id":134,"nodeType":"ParameterList","parameters":[{"constant":false,"id":131,"mutability":"mutable","name":"idsLength","nameLocation":"6496:9:0","nodeType":"VariableDeclaration","scope":135,"src":"6488:17:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":130,"name":"uint256","nodeType":"ElementaryTypeName","src":"6488:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"},{"constant":false,"id":133,"mutability":"mutable","name":"valuesLength","nameLocation":"6515:12:0","nodeType":"VariableDeclaration","scope":135,"src":"6507:20:0","stateVariable":false,"storageLocation":"default","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"},"typeName":{"id":132,"name":"uint256","nodeType":"ElementaryTypeName","src":"6507:7:0","typeDescriptions":{"typeIdentifier":"t_uint256","typeString":"uint256"}},"visibility":"internal"}],"src":"6487:41:0"}}],"abstract":false,"baseContracts":[],"canonicalName":"IERC1155Errors","contractDependencies":[],"contractKind":"interface","documentation":{"id":90,"nodeType":"StructuredDocumentation","src":"4280:143:0","text":" @dev Standard ERC1155 Errors\n Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens."},"fullyImplemented":true,"linearizedBaseContracts":[136],"name":"IERC1155Errors","nameLocation":"4434:14:0","scope":137,"usedErrors":[101,106,111,118,123,128,135],"usedEvents":[]}],"license":"MIT"},"id":0}
\ No newline at end of file
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 44b35dc..5eb0f62 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -116,7 +116,7 @@ def get_model_data(self):
 
         return (content, os.path.abspath(proof_file))
                 
-    def _generate_calldata(self, contract_address: Address, chain_id, function_name, parameters):
+    def _generate_calldata(self, contract_address: Address, chain_id, abi_path: str, function_name, parameters):
         """
         Generate calldata for calling a smart contract function
 
@@ -129,7 +129,6 @@ def _generate_calldata(self, contract_address: Address, chain_id, function_name,
             str: Hex string of calldata
         """
         print("Fetching calldata... 🗣️")
-        abi_path = "examples/on-chain_mnist/abi/MNISTNFT_abi.json"
         with open(abi_path, 'r') as f:
             abi = json.load(f)
         
@@ -193,7 +192,7 @@ async def verify(self, proof_path):
             print(e)
             return False
                 
-    async def transmit(self, account: Account, contract_address: Address, chain_id: int, function_name: str, params, value, signed_proof: SignableMessage, is_none, proofMessage: ProofMessage, signedProofMessage, rpc_url: Optional[str], unsafe: bool = False):
+    async def transmit(self, account: Account, contract_address: Address, abi_path: str, chain_id: int, function_name: str, params, value, signed_proof: SignableMessage, is_none, proofMessage: ProofMessage, signedProofMessage, rpc_url: Optional[str], unsafe: bool = False):
         """
         Transmit: Verify the proof signature (so we know that the account owner signed off on the proof verification), verify the proof, then send the transaction to the contract.
         
@@ -232,12 +231,12 @@ async def transmit(self, account: Account, contract_address: Address, chain_id:
             if rpc_url is not None:
                 web3 = Web3(Web3.HTTPProvider(rpc_url))
             else:
-                alchemy_url = "https://eth-sepolia.g.alchemy.com/v2/aGP6ImVTfOlef4kzUxw0-31sabFgyTCT"
+                alchemy_url = os.getenv("ALCHEMY_URL")
                 web3 = Web3(Web3.HTTPProvider(alchemy_url))
             nonce = web3.eth.get_transaction_count(account.address)  
             try:
                 # Make this await again when we use etherscan to fetch ABIs
-                calldata = self._generate_calldata(contract_address, chain_id, function_name, params)
+                calldata = self._generate_calldata(contract_address, chain_id, abi_path, function_name, params)
             except KeyError as e:
                 print(f"Error generating calldata: {str(e)}")
                 raise

From 3619a75e00309dea57aec42d0afb2fa581ff4f9f Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Sat, 9 Mar 2024 20:09:41 +0000
Subject: [PATCH 15/27] notes

---
 giza_actions/agent.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 5eb0f62..573df76 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -59,7 +59,9 @@ def __init__(self, id: Optional[int] = None, version: Optional[int] = None, **kw
         super().__init__(id=id, version=version, **kwargs)
 
     def infer(self, input_file=None, input_feed=None):
-
+        """
+        Need docs on these ASAP
+        """
         params = {}
         
         if input_file is not None:
@@ -69,7 +71,7 @@ def infer(self, input_file=None, input_feed=None):
             params['input_feed'] = input_feed
 
         params['verifiable'] = True
-        params['job_size'] = "S"
+        params['job_size'] = "M"
         params['output_dtype'] = "Tensor<FP16x16>"
         
         self.inference, self.request_id = self.predict(**params)

From 6ed11607101c551df9d7ba5f1e224e5f8607fedb Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Sat, 9 Mar 2024 20:11:22 +0000
Subject: [PATCH 16/27] job size fix

---
 giza_actions/agent.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 573df76..e9d1e21 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -58,7 +58,7 @@ def __init__(self, id: Optional[int] = None, version: Optional[int] = None, **kw
         """
         super().__init__(id=id, version=version, **kwargs)
 
-    def infer(self, input_file=None, input_feed=None):
+    def infer(self, input_file=None, input_feed=None, job_size="M"):
         """
         Need docs on these ASAP
         """
@@ -71,7 +71,7 @@ def infer(self, input_file=None, input_feed=None):
             params['input_feed'] = input_feed
 
         params['verifiable'] = True
-        params['job_size'] = "M"
+        params['job_size'] = job_size
         params['output_dtype'] = "Tensor<FP16x16>"
         
         self.inference, self.request_id = self.predict(**params)

From 71c59000ec4036b2a10560fb9718e69e938a18bb Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Sun, 10 Mar 2024 00:02:25 +0000
Subject: [PATCH 17/27] hacks: proper formatting and awaiting self verification

---
 giza_actions/agent.py | 2 +-
 giza_actions/model.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index e9d1e21..4e77457 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -224,7 +224,7 @@ async def transmit(self, account: Account, contract_address: Address, abi_path:
                 signer = web3.eth.account.recover_message(signedProofMessage, signed_proof_elements)
                 assert signer.lower() == account.address.lower()
                 print("Proof signature verified! 🔥")
-                assert self.verify(proofMessage.proofType.proof_path)
+                assert await self.verify(proofMessage.proofType.proof_path)
                 print("Proof verified! ⚡️")
         
         print("All good! ✅ Sending transaction...")
diff --git a/giza_actions/model.py b/giza_actions/model.py
index 2e368f5..834df2f 100644
--- a/giza_actions/model.py
+++ b/giza_actions/model.py
@@ -208,7 +208,7 @@ def predict(
                 request_id = body["request_id"]
 
                 if self.framework == Framework.CAIRO:
-                    logging.info("Serialized: ", serialized_output)
+                    logging.info("Serialized: %s", serialized_output)
 
                     preds = self._parse_cairo_response(serialized_output, output_dtype)
                 elif self.framework == Framework.EZKL:

From 78bb1ac6a8182e91debd9b4e4db0537b67dc60d9 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Sun, 10 Mar 2024 10:21:07 +0000
Subject: [PATCH 18/27] value None error fixed

---
 giza_actions/agent.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 4e77457..486a100 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -246,12 +246,15 @@ async def transmit(self, account: Account, contract_address: Address, abi_path:
             try:
                 transaction = {
                     "to": contract_address, 
+                    "from": account.address,
                     "data": calldata,
                     "nonce": nonce,
                     "gas": web3.eth.estimate_gas({"to": contract_address, "data": calldata}),
                     "gasPrice": 40000000000,
-                    "value": value
+                    "chainId": chain_id
                 }
+                if value is not None:
+                    transaction["value"] = value
             except KeyError as e:
                 print(f"Error creating transaction dictionary: {str(e)}")
                 raise

From a14fd5eb7c02cb9f6f32e5b348ecd16c1d3e3ff9 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Sat, 16 Mar 2024 13:00:56 +0000
Subject: [PATCH 19/27] todos

---
 giza_actions/agent.py           | 10 +++-
 giza_actions/on_chain_deploy.py | 84 +++++++++++++++++++++++++++++++++
 2 files changed, 92 insertions(+), 2 deletions(-)
 create mode 100644 giza_actions/on_chain_deploy.py

diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 486a100..a188c59 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -18,8 +18,10 @@
 from dotenv import load_dotenv
 from typing import Optional
 
+# todo: load from ./home
 load_dotenv()
 
+# todo: extend to have request_id, deployment_id: giza models (model_id and version_id), and version_id; remove proof_path from this and dependencies
 class ProofType(BaseModel):
     model_id: int # The model being used for inference
     proof_path: Optional[str] # The path to the proof of inference
@@ -58,6 +60,7 @@ def __init__(self, id: Optional[int] = None, version: Optional[int] = None, **kw
         """
         super().__init__(id=id, version=version, **kwargs)
 
+    # todo: more specific for the job_id
     def infer(self, input_file=None, input_feed=None, job_size="M"):
         """
         Need docs on these ASAP
@@ -79,6 +82,7 @@ def infer(self, input_file=None, input_feed=None, job_size="M"):
         print("Inference saved! ✅ Result: ", self.inference, self.request_id)
         
     def get_model_data(self):
+        # todo: Show job status instead of 404 error
         """Get proof data from GCP and save it as a class attribute"""
         client = DeploymentsClient(API_HOST)
 
@@ -117,7 +121,9 @@ def get_model_data(self):
             f.write(content)
 
         return (content, os.path.abspath(proof_file))
-                
+    
+    # todo: make it easier for users to call popular functions in smart contracts
+    # Maybe chainid default to Sepol
     def _generate_calldata(self, contract_address: Address, chain_id, abi_path: str, function_name, parameters):
         """
         Generate calldata for calling a smart contract function
@@ -149,7 +155,7 @@ def _generate_calldata(self, contract_address: Address, chain_id, abi_path: str,
         calldata = contract.encodeABI(function_name, args=parameters)
         print("Calldata: ", calldata)
         return calldata
-    
+    # Todo: think about transations that don't need to be verified on-chain: where are we storing these signature?
     def sign_proof(self, account: Account, proof: Optional[bytes], proof_path: Optional[str]):
         address = account.address
         
diff --git a/giza_actions/on_chain_deploy.py b/giza_actions/on_chain_deploy.py
new file mode 100644
index 0000000..91151eb
--- /dev/null
+++ b/giza_actions/on_chain_deploy.py
@@ -0,0 +1,84 @@
+from giza_actions.model import GizaModel
+from typing import Optional
+import requests
+from ape import Contract
+
+class OCDeployer:
+    """
+    A blockchain deployer. `OC` stands for on-chain. Uses Ape framework and GizaModel to verify a model proof on-chain and execute an action from it.
+
+    Attributes:
+        model (GizaModel): The model that this deployer uploads proofs for. This model must have the following fields: model_path, id, version, orion_runner_service_url in order to work. This is because all on-chain models require a proof to be generated by Orion Runner.
+
+    Methods:
+        infer: Runs model inference and retrieves the model output
+        get_model_data: retrieves the proof from GCP given the request_id, version_id, deployment_id, and internal model_id
+        process_inference: overriden by user to specify calldata for a given smart contract function
+        deploy: verifies the proof, then calls the smart contract with calldata from inference
+    """
+    
+    def __init__(self, model: GizaModel):
+        """Initialize deployer.
+        
+        Args:
+            model (GizaModel): GizaModel instance
+        """
+        if (
+            model.model_path is None
+            or model.id is None
+            or model.version is None
+            or model.orion_runner_service_url is None
+        ):
+            raise ValueError(
+                "GizaModel is missing required fields: "
+                "model_path, id, version, orion_runner_service_url"
+            )
+
+        self.model = model
+
+    def infer(self, input_file: Optional[str], input_feed: Optional[dict]):
+        """Run model inference and store output."""
+        # TODO: Extract the request id from this call as well so that we can obtain the proof
+        self.inference = self.model.predict(input_file, input_feed, verifiable=True)
+        print("Inference saved! ✅ Result: ", self.inference)
+        
+        
+    # TODO: Make this function async using Asyncer
+    def _get_model_data(self):
+        """Get proof data from GCP."""
+        proof_metadata_url = f"https://api-dev.gizatech.xyz/api/v1/models/{self.model.id}/versions/{self.model.version}/deployments/{self.model.orion_runner_service_url}/proofs/{self.request_id}"
+
+        response = requests.get(proof_metadata_url)
+        
+        # TODO: Log this request and response
+
+        if response.status_code == 200:
+            proof_metadata = response.json()
+            return proof_metadata
+        else:
+            raise Exception(f"Failed to get proof metadata: {response.text}")
+
+    def process_inference(self):
+        """
+        Process inference data into contract calldata.
+        
+        Raises:
+            Exception: If inference not run yet. 
+        """
+        if self.inference is None:
+            raise Exception("Please run infer() before calling process_inference()")
+            
+        # Default just sends inference result to contract
+        return self.inference
+
+    def deploy(self, sc_address, calldata, proof):
+        """
+        Deploy model: Verify proof and execute contract function.
+        
+        Returns:
+            Transaction hash
+        """        
+        contract = Contract(sc_address)
+        # TODO: get model data
+        # TODO: Validate proof locally and execute contract
+        
\ No newline at end of file

From 14fe6a0555b11062b42a13b3909a65fff0bc8f4e Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Sat, 16 Mar 2024 13:13:13 +0000
Subject: [PATCH 20/27] endpoint fixes

---
 giza_actions/agent.py | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index a188c59..9adb3c9 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -11,8 +11,8 @@
 import requests
 import logging
 from giza.frameworks.cairo import verify
-from giza_actions.utils import get_deployment_uri
-from giza.client import DeploymentsClient
+from giza_actions.utils import get_endpoint_uri
+from giza.client import EndpointsClient
 from giza import API_HOST
 from pydantic import BaseModel
 from dotenv import load_dotenv
@@ -21,7 +21,7 @@
 # todo: load from ./home
 load_dotenv()
 
-# todo: extend to have request_id, deployment_id: giza models (model_id and version_id), and version_id; remove proof_path from this and dependencies
+# todo: extend to have request_id, endpoint_id: giza models (model_id and version_id), and version_id; remove proof_path from this and dependencies
 class ProofType(BaseModel):
     model_id: int # The model being used for inference
     proof_path: Optional[str] # The path to the proof of inference
@@ -46,7 +46,7 @@ class GizaAgent(GizaModel):
 
     Methods:
         infer: Runs model inference and retrieves the model output
-        get_model_data: retrieves the proof from GCP given the request_id, version_id, deployment_id, and internal model_id
+        get_model_data: retrieves the proof from GCP given the request_id, version_id, endpoint_id, and internal model_id
         generate_calldate: generates calldata for a given smart contract function
         verify: verifies the proof locally
         deploy: verifies the proof, then calls the smart contract with calldata from inference
@@ -84,17 +84,17 @@ def infer(self, input_file=None, input_feed=None, job_size="M"):
     def get_model_data(self):
         # todo: Show job status instead of 404 error
         """Get proof data from GCP and save it as a class attribute"""
-        client = DeploymentsClient(API_HOST)
+        client = EndpointsClient(API_HOST)
 
-        uri = get_deployment_uri(self.model_id, self.version_id)
+        uri = get_endpoint_uri(self.model_id, self.version_id)
         # get this from CLI
         proof_metadata_url = f"https://api.gizatech.xyz/api/v1/models/{self.model_id}/versions/{self.version_id}/deployments/{uri}/proofs/{self.request_id}:download"
 
         time.sleep(3)
         logging.info(f"Fetching proof metadata from {proof_metadata_url}... ⏳")
-        deployment_id = get_deployment_id(self.model_id, self.version_id)
+        endpoint_id = get_endpoint_uri(self.model_id, self.version_id)
         timeout = time.time() + 8000
-        print(f"Deployment ID: {deployment_id}")
+        print(f"endpoint ID: {endpoint_id}")
         print(f"Request ID: {self.request_id}")
         print(f"Model ID: {self.model_id}")
         print(f"Version ID: {self.version_id}")
@@ -106,7 +106,7 @@ def get_model_data(self):
                 print("Proof retrieval timed out")
                 raise TimeoutError("Proof retrieval timed out")
             try:
-                proof = client.get_proof(self.model_id, self.version_id, deployment_id, self.request_id)
+                proof = client.get_proof(self.model_id, self.version_id, endpoint_id, self.request_id)
                 print(f"Proof: {proof.json(exclude_unset=True)}")
                 break  # Exit the loop if proof is retrieved successfully
             except requests.exceptions.HTTPError as e:
@@ -116,7 +116,7 @@ def get_model_data(self):
                 
         # Save the proof to a file
         proof_file = "zk.proof"
-        content = client.download_proof(self.model_id, self.version_id, deployment_id, self.request_id)
+        content = client.download_proof(self.model_id, self.version_id, endpoint_id, self.request_id)
         with open(proof_file, "wb") as f:
             f.write(content)
 
@@ -307,12 +307,12 @@ async def transmit(self, account: Account, contract_address: Address, abi_path:
     
         
         
-def get_deployment_id(model_id, version_id):
+def get_endpoint_id(model_id, version_id):
     """
-    Retrieve the deployment ID for the model and version.
+    Retrieve the endpoint ID for the model and version.
 
     Returns:
-        int: The ID of the deployment.
+        int: The ID of the endpoint.
     """
-    client = DeploymentsClient(API_HOST)
+    client = EndpointsClient(API_HOST)
     return client.list(model_id, version_id).root[0].id
\ No newline at end of file

From 1c3032f2837299f8d46a6e991aae29f7d1972f77 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Sat, 16 Mar 2024 13:16:47 +0000
Subject: [PATCH 21/27] ..

---
 giza_actions/agent.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 9adb3c9..5763b8c 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -88,7 +88,7 @@ def get_model_data(self):
 
         uri = get_endpoint_uri(self.model_id, self.version_id)
         # get this from CLI
-        proof_metadata_url = f"https://api.gizatech.xyz/api/v1/models/{self.model_id}/versions/{self.version_id}/deployments/{uri}/proofs/{self.request_id}:download"
+        proof_metadata_url = f"https://api.gizatech.xyz/api/v1/models/{self.model_id}/versions/{self.version_id}/endpoints/{uri}/proofs/{self.request_id}:download"
 
         time.sleep(3)
         logging.info(f"Fetching proof metadata from {proof_metadata_url}... ⏳")

From da83805048ec518223c4cb6c7b99971f767885c6 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Tue, 19 Mar 2024 11:49:06 +0100
Subject: [PATCH 22/27] etherscan integration: no need for an abi

---
 giza_actions/agent.py | 53 ++++++++++++++++++++++++++++++-------------
 1 file changed, 37 insertions(+), 16 deletions(-)

diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 5763b8c..bcefd3b 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -122,40 +122,35 @@ def get_model_data(self):
 
         return (content, os.path.abspath(proof_file))
     
-    # todo: make it easier for users to call popular functions in smart contracts
-    # Maybe chainid default to Sepol
-    def _generate_calldata(self, contract_address: Address, chain_id, abi_path: str, function_name, parameters):
+    async def _generate_calldata(self, contract_address: str, chain_id: int, function_name: str, parameters: list):
         """
         Generate calldata for calling a smart contract function
 
         Args:
-            abi_path (str): Path to JSON ABI for the contract
-            function_name (str): Name of contract function to call 
+            contract_address (str): Address of the contract
+            chain_id (int): ID of the Ethereum chain
+            function_name (str): Name of contract function to call
             parameters (list): Arguments to pass to the function
 
         Returns:
             str: Hex string of calldata
         """
-        print("Fetching calldata... 🗣️")
-        with open(abi_path, 'r') as f:
-            abi = json.load(f)
-        
         web3 = Web3()
-        contract = web3.eth.contract(abi=abi)
+        
+        try:
+            abi = fetch_abi(contract_address, chain_id)
+        except ValueError as e:
+            raise ValueError(f"Error fetching contract ABI: {str(e)}") from e
         
         function_abi = next((item for item in abi if 'name' in item and item['name'] == function_name), None)
         
         if function_abi is None:
             raise ValueError(f"Function {function_name} not found in ABI")
         
-        if not isinstance(parameters, (list, tuple)):
-            parameters = [parameters]  # Convert single value to a list
-        
         contract = web3.eth.contract(address=contract_address, abi=abi)
         calldata = contract.encodeABI(function_name, args=parameters)
-        print("Calldata: ", calldata)
         return calldata
-    # Todo: think about transations that don't need to be verified on-chain: where are we storing these signature?
+            
     def sign_proof(self, account: Account, proof: Optional[bytes], proof_path: Optional[str]):
         address = account.address
         
@@ -315,4 +310,30 @@ def get_endpoint_id(model_id, version_id):
         int: The ID of the endpoint.
     """
     client = EndpointsClient(API_HOST)
-    return client.list(model_id, version_id).root[0].id
\ No newline at end of file
+    return client.list(model_id, version_id).root[0].id
+
+def fetch_abi(contract_address, chain_id):
+    api_key = os.getenv("ETHERSCAN_API_KEY")
+    if not api_key:
+        raise ValueError("ETHERSCAN_API_KEY environment variable not set")
+    
+    if chain_id == 1:
+        etherscan_url = "https://api.etherscan.io/api"
+    elif chain_id == 11155111:
+        etherscan_url = "https://api-sepolia.etherscan.io/api"
+    elif chain_id == 5:
+        etherscan_url = "https://api-goerli.etherscan.io/api"
+    else:
+        raise ValueError("Unsupported chain ID")
+    
+    url = f"{etherscan_url}?module=contract&action=getabi&address={contract_address}&apikey={api_key}"
+    
+    response = requests.get(url)
+    response_json = response.json()
+    
+    if response_json["status"] == "1":
+        abi = response_json["result"]
+        return json.loads(abi)
+    else:
+        raise ValueError(f"Failed to retrieve contract ABI: {response_json['message']}")
+    

From 0214f237b5d5557ac34886b35f9b2147874c0399 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Tue, 19 Mar 2024 14:47:21 +0100
Subject: [PATCH 23/27] proof sig enabled logic

---
 examples/on-chain_mnist/action_agent.py |  4 ++
 giza_actions/agent.py                   | 60 ++++++++++---------------
 2 files changed, 27 insertions(+), 37 deletions(-)

diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index a6af425..1299868 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -64,10 +64,12 @@ async def transmission():
     
     # Mnemonics are disabled inherently, so we must enable
     Account.enable_unaudited_hdwallet_features()
+    # Fetch this from ./home
     mnemonic = os.getenv("MNEMONIC")
     account = import_account(mnemonic)
 
     # Make sure the model is deployed, then create an agent
+    # Add contract address as a parameter, then add an update contract function. Also add a network: string parameter
     agent = GizaAgent(id=id, version=version)
     # Rather than calling predict, we call infer to store the result
     agent.infer(input_feed={"image": img})
@@ -79,6 +81,7 @@ async def transmission():
     inference_result = int(agent.inference[0][0] * 10)
     # Pass the inference result and the sender address
     inference_result_arr = [inference_result, Address("0xEbeD10f21F32E7F327F8B923257c1b6EceD857b7")]
+    # No need for an ABI anymore
     abi_path = "examples/on-chain_mnist/abi/MNISTNFT_abi.json"
 
     print("inference result: ", inference_result_arr)
@@ -88,6 +91,7 @@ async def transmission():
     # verify proof
     verified = await agent.verify(proof_path)
     # Sign the proof if verification succeeds, transmit txn
+    # Perhaps define an intent here?
     if verified:
         print("Proof verified. 🚀")
         (signed_proof, is_none, proofMessage, signable_proof_message) = agent.sign_proof(account, proof, proof_path)
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index bcefd3b..ccfeb77 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -195,58 +195,45 @@ async def verify(self, proof_path):
             print(e)
             return False
                 
-    async def transmit(self, account: Account, contract_address: Address, abi_path: str, chain_id: int, function_name: str, params, value, signed_proof: SignableMessage, is_none, proofMessage: ProofMessage, signedProofMessage, rpc_url: Optional[str], unsafe: bool = False):
+    async def transmit(self, account: Account, contract_address: Address, abi_path: str, chain_id: int, function_name: str, params, value, signed_proof: SignableMessage, proofMessage: ProofMessage, signedProofMessage, rpc_url: Optional[str], proofsig_enabled: bool = False):
         """
-        Transmit: Verify the proof signature (so we know that the account owner signed off on the proof verification), verify the proof, then send the transaction to the contract.
-        
+        Transmit: Verify the proof signature (if proofsig_enabled is True), verify the proof, then send the transaction to the contract.
+
         Returns:
             A transaction receipt
-        """    
-        
+        """
+
         web3 = Web3()
-        
-        v, r, s = signed_proof.v, signed_proof.r, signed_proof.s
-        signed_proof_elements = (v, r, s)
-        
-        if not unsafe:
-            if is_none:
-                raise ValueError("Proof cannot be None when unsafe is False")
-            
+
+        if proofsig_enabled:
+            v, r, s = signed_proof.v, signed_proof.r, signed_proof.s
+            signed_proof_elements = (v, r, s)
             signer = web3.eth.account.recover_message(signedProofMessage, signed_proof_elements)
             assert signer.lower() == account.address.lower()
             print("Proof signature verified! 🔥")
-            assert self.verify(proofMessage.proofType.proof_path)
-            print("Proof verified! ⚡️")
-        else:
-            if is_none:
-                print("Warning: Proof is None. Skipping proof verification.")
-            else:
-                print("Signed proof retrieved! ✅")
-                signer = web3.eth.account.recover_message(signedProofMessage, signed_proof_elements)
-                assert signer.lower() == account.address.lower()
-                print("Proof signature verified! 🔥")
-                assert await self.verify(proofMessage.proofType.proof_path)
-                print("Proof verified! ⚡️")
-        
+
+        assert await self.verify(proofMessage.proofType.proof_path)
+        print("Proof verified! ⚡️")
+
         print("All good! ✅ Sending transaction...")
-        
+
         try:
             if rpc_url is not None:
                 web3 = Web3(Web3.HTTPProvider(rpc_url))
             else:
                 alchemy_url = os.getenv("ALCHEMY_URL")
                 web3 = Web3(Web3.HTTPProvider(alchemy_url))
-            nonce = web3.eth.get_transaction_count(account.address)  
+            nonce = web3.eth.get_transaction_count(account.address)
             try:
                 # Make this await again when we use etherscan to fetch ABIs
                 calldata = self._generate_calldata(contract_address, chain_id, abi_path, function_name, params)
             except KeyError as e:
                 print(f"Error generating calldata: {str(e)}")
                 raise
-            #TODO: Figure out how to get gasPrice
+            # TODO: Figure out how to get gasPrice
             try:
                 transaction = {
-                    "to": contract_address, 
+                    "to": contract_address,
                     "from": account.address,
                     "data": calldata,
                     "nonce": nonce,
@@ -264,15 +251,15 @@ async def transmit(self, account: Account, contract_address: Address, abi_path:
                 signed_tx = account.sign_transaction(transaction)
             except KeyError as e:
                 print(f"Error signing transaction: {str(e)}")
-                raise     
-            print (f"Signed transaction: {signed_tx}")       
+                raise
+            print(f"Signed transaction: {signed_tx}")
             try:
                 tx_hash = web3.eth.send_raw_transaction(signed_tx.rawTransaction)
             except ValueError as e:
                 print(f"Error sending transaction: {str(e)}")
                 return None
             except Exception as e:
-                print(f"Error sending transaction: {str(e)}")  
+                print(f"Error sending transaction: {str(e)}")
                 return None
             try:
                 receipt = web3.eth.wait_for_transaction_receipt(tx_hash, timeout=300)
@@ -285,11 +272,11 @@ async def transmit(self, account: Account, contract_address: Address, abi_path:
             except asyncio.TimeoutError:
                 print("Transaction receipt retrieval timed out after 300 seconds.")
                 return None
-        
+
         except ValueError as e:
             print(f"Error encoding transaction: {e}")
             return None
-        
+
         except ContractCustomError as e:
             print(f"Custom error occurred: {e}")
             print(f"Error message: {e.args[0]}")
@@ -335,5 +322,4 @@ def fetch_abi(contract_address, chain_id):
         abi = response_json["result"]
         return json.loads(abi)
     else:
-        raise ValueError(f"Failed to retrieve contract ABI: {response_json['message']}")
-    
+        raise ValueError(f"Failed to retrieve contract ABI: {response_json['message']}")
\ No newline at end of file

From a0fd146317f3868af9bd26bbc758d3d50197e781 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Tue, 19 Mar 2024 14:49:45 +0100
Subject: [PATCH 24/27] transmit docstrings

---
 giza_actions/agent.py | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index ccfeb77..9cf807b 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -197,10 +197,24 @@ async def verify(self, proof_path):
                 
     async def transmit(self, account: Account, contract_address: Address, abi_path: str, chain_id: int, function_name: str, params, value, signed_proof: SignableMessage, proofMessage: ProofMessage, signedProofMessage, rpc_url: Optional[str], proofsig_enabled: bool = False):
         """
-        Transmit: Verify the proof signature (if proofsig_enabled is True), verify the proof, then send the transaction to the contract.
+            Transmit: Verify the proof signature (if proofsig_enabled is True), verify the proof, then send the transaction to the contract.
 
-        Returns:
-            A transaction receipt
+            Args:
+                account (Account): The account object used to sign the transaction.
+                contract_address (Address): The address of the contract to interact with.
+                abi_path (str): The path to the ABI file for the contract.
+                chain_id (int): The ID of the blockchain network.
+                function_name (str): The name of the contract function to call.
+                params: The parameters to pass to the contract function.
+                value: The value (in Wei) to send with the transaction (optional).
+                signed_proof (SignableMessage): The signed proof message.
+                proofMessage (ProofMessage): The proof message object.
+                signedProofMessage: The signed proof message.
+                rpc_url (Optional[str]): The URL of the RPC endpoint to use (optional).
+                proofsig_enabled (bool): Whether to enable proof signature verification or not (default: False).
+
+            Returns:
+                A transaction receipt
         """
 
         web3 = Web3()

From 0ba6ad39da487a4c0dcddebe3f466d2c2d8b041b Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Tue, 19 Mar 2024 14:58:59 +0100
Subject: [PATCH 25/27] fix: init comes with contract addy and chain id

---
 giza_actions/agent.py | 29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 9cf807b..6468eb2 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -52,16 +52,21 @@ class GizaAgent(GizaModel):
         deploy: verifies the proof, then calls the smart contract with calldata from inference
     """
     
-    def __init__(self, id: Optional[int] = None, version: Optional[int] = None, **kwargs):
+    def __init__(self, contract_address: str, chain_id: int, id: Optional[int] = None, version: Optional[int] = None, **kwargs):
         """Initialize deployer.
-        
+
         Args:
-            model (GizaModel): GizaModel instance
+            contract_address (str): The address of the contract.
+            chain_id (int): The ID of the blockchain network.
+            id (Optional[int]): Optional ID (default: None).
+            version (Optional[int]): Optional version (default: None).
+            **kwargs: Additional keyword arguments.
         """
         super().__init__(id=id, version=version, **kwargs)
+        self.contract_address = contract_address
+        self.chain_id = chain_id
 
-    # todo: more specific for the job_id
-    def infer(self, input_file=None, input_feed=None, job_size="M"):
+    def infer(self, input_file=None, input_feed=None, job_size="S"):
         """
         Need docs on these ASAP
         """
@@ -82,7 +87,7 @@ def infer(self, input_file=None, input_feed=None, job_size="M"):
         print("Inference saved! ✅ Result: ", self.inference, self.request_id)
         
     def get_model_data(self):
-        # todo: Show job status instead of 404 error
+        #TODO: Show job status instead of 404 error
         """Get proof data from GCP and save it as a class attribute"""
         client = EndpointsClient(API_HOST)
 
@@ -122,7 +127,7 @@ def get_model_data(self):
 
         return (content, os.path.abspath(proof_file))
     
-    async def _generate_calldata(self, contract_address: str, chain_id: int, function_name: str, parameters: list):
+    async def _generate_calldata(self, function_name: str, parameters: list):
         """
         Generate calldata for calling a smart contract function
 
@@ -138,7 +143,7 @@ async def _generate_calldata(self, contract_address: str, chain_id: int, functio
         web3 = Web3()
         
         try:
-            abi = fetch_abi(contract_address, chain_id)
+            abi = fetch_abi(self.contract_address, self.chain_id)
         except ValueError as e:
             raise ValueError(f"Error fetching contract ABI: {str(e)}") from e
         
@@ -147,7 +152,7 @@ async def _generate_calldata(self, contract_address: str, chain_id: int, functio
         if function_abi is None:
             raise ValueError(f"Function {function_name} not found in ABI")
         
-        contract = web3.eth.contract(address=contract_address, abi=abi)
+        contract = web3.eth.contract(address=self.contract_address, abi=abi)
         calldata = contract.encodeABI(function_name, args=parameters)
         return calldata
             
@@ -239,12 +244,10 @@ async def transmit(self, account: Account, contract_address: Address, abi_path:
                 web3 = Web3(Web3.HTTPProvider(alchemy_url))
             nonce = web3.eth.get_transaction_count(account.address)
             try:
-                # Make this await again when we use etherscan to fetch ABIs
-                calldata = self._generate_calldata(contract_address, chain_id, abi_path, function_name, params)
+                calldata = await self._generate_calldata(function_name, params)
             except KeyError as e:
                 print(f"Error generating calldata: {str(e)}")
                 raise
-            # TODO: Figure out how to get gasPrice
             try:
                 transaction = {
                     "to": contract_address,
@@ -252,7 +255,7 @@ async def transmit(self, account: Account, contract_address: Address, abi_path:
                     "data": calldata,
                     "nonce": nonce,
                     "gas": web3.eth.estimate_gas({"to": contract_address, "data": calldata}),
-                    "gasPrice": 40000000000,
+                    "gasPrice": web3.eth.gas_price,
                     "chainId": chain_id
                 }
                 if value is not None:

From 6e34f7550b6513f9a14169169377efff037d7bbc Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Tue, 19 Mar 2024 15:22:51 +0100
Subject: [PATCH 26/27] fix: no more dummy sigs

---
 giza_actions/agent.py | 35 ++++++++++++++++++-----------------
 1 file changed, 18 insertions(+), 17 deletions(-)

diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 6468eb2..2125364 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -12,7 +12,7 @@
 import logging
 from giza.frameworks.cairo import verify
 from giza_actions.utils import get_endpoint_uri
-from giza.client import EndpointsClient
+from giza.client import DeploymentsClient
 from giza import API_HOST
 from pydantic import BaseModel
 from dotenv import load_dotenv
@@ -33,6 +33,7 @@ class Config:
 class ProofMessage(BaseModel):
     proofType: ProofType
     
+#TODO: Add functions for updating contract, chain id, and endpoint uri
 class GizaAgent(GizaModel):
     """
     A blockchain AI agent that helps users put their Actions on-chain. Uses Ape framework and GizaModel to verify a model proof off-chain, sign it with the user's account, and send results to a select EVM chain to execute code.
@@ -63,7 +64,12 @@ def __init__(self, contract_address: str, chain_id: int, id: Optional[int] = Non
             **kwargs: Additional keyword arguments.
         """
         super().__init__(id=id, version=version, **kwargs)
-        self.contract_address = contract_address
+        contract_sc = Web3.to_checksum_address(contract_address)
+        
+        #TODO: How dow we get the endpoint id from this?
+        self.endpoint_uri = get_endpoint_uri(self.model_id, self.version_id)
+
+        self.contract_address = contract_sc
         self.chain_id = chain_id
 
     def infer(self, input_file=None, input_feed=None, job_size="S"):
@@ -87,19 +93,16 @@ def infer(self, input_file=None, input_feed=None, job_size="S"):
         print("Inference saved! ✅ Result: ", self.inference, self.request_id)
         
     def get_model_data(self):
-        #TODO: Show job status instead of 404 error
         """Get proof data from GCP and save it as a class attribute"""
-        client = EndpointsClient(API_HOST)
+        client = DeploymentsClient(API_HOST)
 
-        uri = get_endpoint_uri(self.model_id, self.version_id)
         # get this from CLI
-        proof_metadata_url = f"https://api.gizatech.xyz/api/v1/models/{self.model_id}/versions/{self.version_id}/endpoints/{uri}/proofs/{self.request_id}:download"
+        proof_metadata_url = f"https://api.gizatech.xyz/api/v1/models/{self.model_id}/versions/{self.version_id}/endpoints/{self.endpoint_uri}/proofs/{self.request_id}:download"
 
         time.sleep(3)
         logging.info(f"Fetching proof metadata from {proof_metadata_url}... ⏳")
-        endpoint_id = get_endpoint_uri(self.model_id, self.version_id)
+
         timeout = time.time() + 8000
-        print(f"endpoint ID: {endpoint_id}")
         print(f"Request ID: {self.request_id}")
         print(f"Model ID: {self.model_id}")
         print(f"Version ID: {self.version_id}")
@@ -111,17 +114,17 @@ def get_model_data(self):
                 print("Proof retrieval timed out")
                 raise TimeoutError("Proof retrieval timed out")
             try:
-                proof = client.get_proof(self.model_id, self.version_id, endpoint_id, self.request_id)
+                #TODO: Verify that we can use endpoint URI here
+                proof = client.get_proof(self.model_id, self.version_id, self.endpoint_uri, self.request_id)
                 print(f"Proof: {proof.json(exclude_unset=True)}")
                 break  # Exit the loop if proof is retrieved successfully
             except requests.exceptions.HTTPError as e:
                 print("Proof retrieval failing, sleeping for 5 seconds")
-                print(e)
                 time.sleep(5)
                 
         # Save the proof to a file
         proof_file = "zk.proof"
-        content = client.download_proof(self.model_id, self.version_id, endpoint_id, self.request_id)
+        content = client.download_proof(self.model_id, self.version_id, self.endpoint_uri, self.request_id)
         with open(proof_file, "wb") as f:
             f.write(content)
 
@@ -200,15 +203,13 @@ async def verify(self, proof_path):
             print(e)
             return False
                 
-    async def transmit(self, account: Account, contract_address: Address, abi_path: str, chain_id: int, function_name: str, params, value, signed_proof: SignableMessage, proofMessage: ProofMessage, signedProofMessage, rpc_url: Optional[str], proofsig_enabled: bool = False):
+    async def transmit(self, account: Account, function_name: str, params, value, signed_proof: SignableMessage, proofMessage: ProofMessage, signedProofMessage, rpc_url: Optional[str], proofsig_enabled: bool = False):
         """
             Transmit: Verify the proof signature (if proofsig_enabled is True), verify the proof, then send the transaction to the contract.
 
             Args:
                 account (Account): The account object used to sign the transaction.
-                contract_address (Address): The address of the contract to interact with.
                 abi_path (str): The path to the ABI file for the contract.
-                chain_id (int): The ID of the blockchain network.
                 function_name (str): The name of the contract function to call.
                 params: The parameters to pass to the contract function.
                 value: The value (in Wei) to send with the transaction (optional).
@@ -250,13 +251,13 @@ async def transmit(self, account: Account, contract_address: Address, abi_path:
                 raise
             try:
                 transaction = {
-                    "to": contract_address,
+                    "to": self.contract_address,
                     "from": account.address,
                     "data": calldata,
                     "nonce": nonce,
-                    "gas": web3.eth.estimate_gas({"to": contract_address, "data": calldata}),
+                    "gas": web3.eth.estimate_gas({"to": self.contract_address, "data": calldata}),
                     "gasPrice": web3.eth.gas_price,
-                    "chainId": chain_id
+                    "chainId": self.chain_id
                 }
                 if value is not None:
                     transaction["value"] = value

From c0c279cc97f63c5fa7c9a7ee97dd2f05d6fe85b6 Mon Sep 17 00:00:00 2001
From: lancenonce <lancendavis47@gmail.com>
Date: Tue, 19 Mar 2024 16:32:19 +0100
Subject: [PATCH 27/27] cleanup premerge with last todos

---
 ape-config.yaml                               |   4 +
 examples/on-chain_mnist/abi/MNISTNFT_abi.json | 532 ------------------
 examples/on-chain_mnist/action_agent.py       |  31 +-
 .../cairo/lofi_mnst/inference/.gitignore      |   1 -
 .../cairo/lofi_mnst/inference/.tool-versions  |   1 -
 .../cairo/lofi_mnst/inference/Scarb.lock      | 127 -----
 .../cairo/lofi_mnst/inference/Scarb.toml      |  16 -
 .../cairo/lofi_mnst/inference/src/lib.cairo   |  26 -
 .../on-chain_mnist/conversion_and_test.py     |  42 --
 giza_actions/agent.py                         |  46 +-
 10 files changed, 41 insertions(+), 785 deletions(-)
 delete mode 100644 examples/on-chain_mnist/abi/MNISTNFT_abi.json
 delete mode 100644 examples/on-chain_mnist/cairo/lofi_mnst/inference/.gitignore
 delete mode 100644 examples/on-chain_mnist/cairo/lofi_mnst/inference/.tool-versions
 delete mode 100644 examples/on-chain_mnist/cairo/lofi_mnst/inference/Scarb.lock
 delete mode 100644 examples/on-chain_mnist/cairo/lofi_mnst/inference/Scarb.toml
 delete mode 100644 examples/on-chain_mnist/cairo/lofi_mnst/inference/src/lib.cairo
 delete mode 100644 examples/on-chain_mnist/conversion_and_test.py

diff --git a/ape-config.yaml b/ape-config.yaml
index 16934c7..b79b772 100644
--- a/ape-config.yaml
+++ b/ape-config.yaml
@@ -4,3 +4,7 @@ deployments:
     sepolia:
       - contract_type: MNISTNFT
         address: 0x9C5d3b892b88C66783e41e6B8b73fA744efeb5d6
+
+test:
+  mnemonic: test test test test test test test test test test junk junk
+  number_of_accounts: 5
\ No newline at end of file
diff --git a/examples/on-chain_mnist/abi/MNISTNFT_abi.json b/examples/on-chain_mnist/abi/MNISTNFT_abi.json
deleted file mode 100644
index cef4726..0000000
--- a/examples/on-chain_mnist/abi/MNISTNFT_abi.json
+++ /dev/null
@@ -1,532 +0,0 @@
-[
-	{
-		"inputs": [],
-		"stateMutability": "nonpayable",
-		"type": "constructor"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "sender",
-				"type": "address"
-			},
-			{
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			},
-			{
-				"internalType": "address",
-				"name": "owner",
-				"type": "address"
-			}
-		],
-		"name": "ERC721IncorrectOwner",
-		"type": "error"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "operator",
-				"type": "address"
-			},
-			{
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			}
-		],
-		"name": "ERC721InsufficientApproval",
-		"type": "error"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "approver",
-				"type": "address"
-			}
-		],
-		"name": "ERC721InvalidApprover",
-		"type": "error"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "operator",
-				"type": "address"
-			}
-		],
-		"name": "ERC721InvalidOperator",
-		"type": "error"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "owner",
-				"type": "address"
-			}
-		],
-		"name": "ERC721InvalidOwner",
-		"type": "error"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "receiver",
-				"type": "address"
-			}
-		],
-		"name": "ERC721InvalidReceiver",
-		"type": "error"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "sender",
-				"type": "address"
-			}
-		],
-		"name": "ERC721InvalidSender",
-		"type": "error"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			}
-		],
-		"name": "ERC721NonexistentToken",
-		"type": "error"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "owner",
-				"type": "address"
-			},
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "approved",
-				"type": "address"
-			},
-			{
-				"indexed": true,
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			}
-		],
-		"name": "Approval",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "owner",
-				"type": "address"
-			},
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "operator",
-				"type": "address"
-			},
-			{
-				"indexed": false,
-				"internalType": "bool",
-				"name": "approved",
-				"type": "bool"
-			}
-		],
-		"name": "ApprovalForAll",
-		"type": "event"
-	},
-	{
-		"anonymous": false,
-		"inputs": [
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "from",
-				"type": "address"
-			},
-			{
-				"indexed": true,
-				"internalType": "address",
-				"name": "to",
-				"type": "address"
-			},
-			{
-				"indexed": true,
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			}
-		],
-		"name": "Transfer",
-		"type": "event"
-	},
-	{
-		"stateMutability": "payable",
-		"type": "fallback"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "to",
-				"type": "address"
-			},
-			{
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			}
-		],
-		"name": "approve",
-		"outputs": [],
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "owner",
-				"type": "address"
-			}
-		],
-		"name": "balanceOf",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			}
-		],
-		"name": "getApproved",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"inputs": [],
-		"name": "getBalance",
-		"outputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "owner",
-				"type": "address"
-			},
-			{
-				"internalType": "address",
-				"name": "operator",
-				"type": "address"
-			}
-		],
-		"name": "isApprovedForAll",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			},
-			{
-				"internalType": "address",
-				"name": "sendTo",
-				"type": "address"
-			}
-		],
-		"name": "mint",
-		"outputs": [],
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"inputs": [],
-		"name": "name",
-		"outputs": [
-			{
-				"internalType": "string",
-				"name": "",
-				"type": "string"
-			}
-		],
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "operator",
-				"type": "address"
-			},
-			{
-				"internalType": "address",
-				"name": "from",
-				"type": "address"
-			},
-			{
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			},
-			{
-				"internalType": "bytes",
-				"name": "data",
-				"type": "bytes"
-			}
-		],
-		"name": "onERC721Received",
-		"outputs": [
-			{
-				"internalType": "bytes4",
-				"name": "",
-				"type": "bytes4"
-			}
-		],
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			}
-		],
-		"name": "ownerOf",
-		"outputs": [
-			{
-				"internalType": "address",
-				"name": "",
-				"type": "address"
-			}
-		],
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "from",
-				"type": "address"
-			},
-			{
-				"internalType": "address",
-				"name": "to",
-				"type": "address"
-			},
-			{
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			}
-		],
-		"name": "safeTransferFrom",
-		"outputs": [],
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "from",
-				"type": "address"
-			},
-			{
-				"internalType": "address",
-				"name": "to",
-				"type": "address"
-			},
-			{
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			},
-			{
-				"internalType": "bytes",
-				"name": "data",
-				"type": "bytes"
-			}
-		],
-		"name": "safeTransferFrom",
-		"outputs": [],
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "operator",
-				"type": "address"
-			},
-			{
-				"internalType": "bool",
-				"name": "approved",
-				"type": "bool"
-			}
-		],
-		"name": "setApprovalForAll",
-		"outputs": [],
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "bytes4",
-				"name": "interfaceId",
-				"type": "bytes4"
-			}
-		],
-		"name": "supportsInterface",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"inputs": [],
-		"name": "symbol",
-		"outputs": [
-			{
-				"internalType": "string",
-				"name": "",
-				"type": "string"
-			}
-		],
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "uint256",
-				"name": "",
-				"type": "uint256"
-			}
-		],
-		"name": "tokenExists",
-		"outputs": [
-			{
-				"internalType": "bool",
-				"name": "",
-				"type": "bool"
-			}
-		],
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			}
-		],
-		"name": "tokenURI",
-		"outputs": [
-			{
-				"internalType": "string",
-				"name": "",
-				"type": "string"
-			}
-		],
-		"stateMutability": "view",
-		"type": "function"
-	},
-	{
-		"inputs": [
-			{
-				"internalType": "address",
-				"name": "from",
-				"type": "address"
-			},
-			{
-				"internalType": "address",
-				"name": "to",
-				"type": "address"
-			},
-			{
-				"internalType": "uint256",
-				"name": "tokenId",
-				"type": "uint256"
-			}
-		],
-		"name": "transferFrom",
-		"outputs": [],
-		"stateMutability": "nonpayable",
-		"type": "function"
-	},
-	{
-		"stateMutability": "payable",
-		"type": "receive"
-	}
-]
\ No newline at end of file
diff --git a/examples/on-chain_mnist/action_agent.py b/examples/on-chain_mnist/action_agent.py
index 1299868..63471d7 100644
--- a/examples/on-chain_mnist/action_agent.py
+++ b/examples/on-chain_mnist/action_agent.py
@@ -1,9 +1,9 @@
 from eth_account import Account
+from ape import accounts
 from eth_typing import Address
 import requests
 import os
 import numpy as np
-from web3 import Web3
 from PIL import Image
 from giza_actions.action import Action, action
 from giza_actions.agent import GizaAgent
@@ -61,43 +61,32 @@ async def transmission():
     img = process_image(img)
     id = 420
     version = 1
-    
-    # Mnemonics are disabled inherently, so we must enable
-    Account.enable_unaudited_hdwallet_features()
-    # Fetch this from ./home
-    mnemonic = os.getenv("MNEMONIC")
-    account = import_account(mnemonic)
-
+    account = accounts.test_accounts.generate_test_account()
     # Make sure the model is deployed, then create an agent
     # Add contract address as a parameter, then add an update contract function. Also add a network: string parameter
-    agent = GizaAgent(id=id, version=version)
+    contract_address = os.getenv("CONTRACT_ADDRESS")
+    print("Contract Address: ", contract_address)
+
+    agent = GizaAgent(contract_address=contract_address, chain_id=11155111, id=id, version=version)
     # Rather than calling predict, we call infer to store the result
     agent.infer(input_feed={"image": img})
-    # Fetch the contract address and make sure it's a checksum address
-    contract_noncheck_address = os.getenv("CONTRACT_ADDRESS")
-    contract_address = Web3.to_checksum_address(contract_noncheck_address)
-    print("Contract Address: ", contract_address)
     # Adjust the inference result to be a single-value whole integer
     inference_result = int(agent.inference[0][0] * 10)
     # Pass the inference result and the sender address
     inference_result_arr = [inference_result, Address("0xEbeD10f21F32E7F327F8B923257c1b6EceD857b7")]
-    # No need for an ABI anymore
-    abi_path = "examples/on-chain_mnist/abi/MNISTNFT_abi.json"
 
     print("inference result: ", inference_result_arr)
-    value = 0
+    value = None
     # Get the proof 
-    (proof, proof_path) = agent.get_model_data()
+    (_, proof_path) = agent.get_model_data()
     # verify proof
     verified = await agent.verify(proof_path)
-    # Sign the proof if verification succeeds, transmit txn
     # Perhaps define an intent here?
     if verified:
-        print("Proof verified. 🚀")
-        (signed_proof, is_none, proofMessage, signable_proof_message) = agent.sign_proof(account, proof, proof_path)
         try:
-            receipt = await agent.transmit(account = account, contract_address=contract_address, chain_id=11155111, abi_path=abi_path, function_name="mint", params=inference_result_arr, value=value, signed_proof=signed_proof, is_none=is_none, proofMessage=proofMessage, signedProofMessage=signable_proof_message, rpc_url=None, unsafe=True)
+            receipt = await agent.transmit(account = account, function_name="mint", params=inference_result_arr, value=value, rpc_url=None)
             print("Receipt: ", receipt)
+            #TODO: (GIZ503) Perhaps we can clean up the receipt for users so that they can choose what to display / save
             return receipt
         except Exception as e:
             print(f"Error: {e}") 
diff --git a/examples/on-chain_mnist/cairo/lofi_mnst/inference/.gitignore b/examples/on-chain_mnist/cairo/lofi_mnst/inference/.gitignore
deleted file mode 100644
index 1de5659..0000000
--- a/examples/on-chain_mnist/cairo/lofi_mnst/inference/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-target
\ No newline at end of file
diff --git a/examples/on-chain_mnist/cairo/lofi_mnst/inference/.tool-versions b/examples/on-chain_mnist/cairo/lofi_mnst/inference/.tool-versions
deleted file mode 100644
index 6d5fee9..0000000
--- a/examples/on-chain_mnist/cairo/lofi_mnst/inference/.tool-versions
+++ /dev/null
@@ -1 +0,0 @@
-scarb 2.5.3
\ No newline at end of file
diff --git a/examples/on-chain_mnist/cairo/lofi_mnst/inference/Scarb.lock b/examples/on-chain_mnist/cairo/lofi_mnst/inference/Scarb.lock
deleted file mode 100644
index 7a63a92..0000000
--- a/examples/on-chain_mnist/cairo/lofi_mnst/inference/Scarb.lock
+++ /dev/null
@@ -1,127 +0,0 @@
-# Code generated by scarb DO NOT EDIT.
-version = 1
-
-[[package]]
-name = "_constant_value"
-version = "0.1.0"
-dependencies = [
- "orion",
-]
-
-[[package]]
-name = "alexandria_data_structures"
-version = "0.2.0"
-source = "git+https://github.com/keep-starknet-strange/alexandria.git?rev=800f5ad#800f5ad217847b5ded63c0302a444161766ee9d6"
-dependencies = [
- "alexandria_encoding",
-]
-
-[[package]]
-name = "alexandria_encoding"
-version = "0.1.0"
-source = "git+https://github.com/keep-starknet-strange/alexandria.git?rev=800f5ad#800f5ad217847b5ded63c0302a444161766ee9d6"
-dependencies = [
- "alexandria_math",
- "alexandria_numeric",
-]
-
-[[package]]
-name = "alexandria_math"
-version = "0.2.0"
-source = "git+https://github.com/keep-starknet-strange/alexandria.git?rev=800f5ad#800f5ad217847b5ded63c0302a444161766ee9d6"
-dependencies = [
- "alexandria_data_structures",
-]
-
-[[package]]
-name = "alexandria_merkle_tree"
-version = "0.1.0"
-source = "git+https://github.com/keep-starknet-strange/alexandria.git?rev=800f5ad#800f5ad217847b5ded63c0302a444161766ee9d6"
-
-[[package]]
-name = "alexandria_numeric"
-version = "0.1.0"
-source = "git+https://github.com/keep-starknet-strange/alexandria.git?rev=800f5ad#800f5ad217847b5ded63c0302a444161766ee9d6"
-dependencies = [
- "alexandria_math",
-]
-
-[[package]]
-name = "alexandria_sorting"
-version = "0.1.0"
-source = "git+https://github.com/keep-starknet-strange/alexandria.git?rev=800f5ad#800f5ad217847b5ded63c0302a444161766ee9d6"
-dependencies = [
- "alexandria_data_structures",
-]
-
-[[package]]
-name = "cubit"
-version = "1.3.0"
-source = "git+https://github.com/influenceth/cubit.git?rev=6275608#62756082bf2555d7ab25c69d9c7bc30574ff1ce8"
-
-[[package]]
-name = "inference"
-version = "0.1.0"
-dependencies = [
- "_constant_value",
- "node_linear1_bias",
- "node_linear1_weight",
- "node_linear2_bias",
- "node_linear2_weight",
- "node_linear3_bias",
- "node_linear3_weight",
- "orion",
-]
-
-[[package]]
-name = "node_linear1_bias"
-version = "0.1.0"
-dependencies = [
- "orion",
-]
-
-[[package]]
-name = "node_linear1_weight"
-version = "0.1.0"
-dependencies = [
- "orion",
-]
-
-[[package]]
-name = "node_linear2_bias"
-version = "0.1.0"
-dependencies = [
- "orion",
-]
-
-[[package]]
-name = "node_linear2_weight"
-version = "0.1.0"
-dependencies = [
- "orion",
-]
-
-[[package]]
-name = "node_linear3_bias"
-version = "0.1.0"
-dependencies = [
- "orion",
-]
-
-[[package]]
-name = "node_linear3_weight"
-version = "0.1.0"
-dependencies = [
- "orion",
-]
-
-[[package]]
-name = "orion"
-version = "0.2.3"
-source = "git+https://github.com/gizatechxyz/orion.git?rev=7d84a42#7d84a423a1605548fcaf40d112f4e2d8fc5485bb"
-dependencies = [
- "alexandria_data_structures",
- "alexandria_merkle_tree",
- "alexandria_sorting",
- "cubit",
-]
diff --git a/examples/on-chain_mnist/cairo/lofi_mnst/inference/Scarb.toml b/examples/on-chain_mnist/cairo/lofi_mnst/inference/Scarb.toml
deleted file mode 100644
index 28ea5a9..0000000
--- a/examples/on-chain_mnist/cairo/lofi_mnst/inference/Scarb.toml
+++ /dev/null
@@ -1,16 +0,0 @@
-[package]
-name = "inference"
-version = "0.1.0"
-edition = "2023_10"
-
-[dependencies]
-node_linear1_weight = { path = "../initializers/node_linear1_weight"} 
-node_linear1_bias = { path = "../initializers/node_linear1_bias"} 
-node_linear2_weight = { path = "../initializers/node_linear2_weight"} 
-node_linear2_bias = { path = "../initializers/node_linear2_bias"} 
-node_linear3_weight = { path = "../initializers/node_linear3_weight"} 
-node_linear3_bias = { path = "../initializers/node_linear3_bias"} 
-_constant_value = { path = "../attributes/_constant_value"} 
-orion = { git = "https://github.com/gizatechxyz/orion.git", rev = "7d84a42" } 
-[lib]
-sierra-text = true
\ No newline at end of file
diff --git a/examples/on-chain_mnist/cairo/lofi_mnst/inference/src/lib.cairo b/examples/on-chain_mnist/cairo/lofi_mnst/inference/src/lib.cairo
deleted file mode 100644
index f1243e9..0000000
--- a/examples/on-chain_mnist/cairo/lofi_mnst/inference/src/lib.cairo
+++ /dev/null
@@ -1,26 +0,0 @@
-use orion::operators::tensor::{Tensor, TensorTrait};
-use orion::operators::tensor::{U32Tensor, I32Tensor, I8Tensor, FP8x23Tensor, FP16x16Tensor, FP32x32Tensor, BoolTensor};
-use orion::numbers::{FP8x23, FP16x16, FP32x32};
-use orion::operators::matrix::{MutMatrix, MutMatrixImpl};
-use orion::operators::nn::{NNTrait, FP16x16NN};
-
-use node_linear1_weight::get_node_linear1_weight;
-use node_linear1_bias::get_node_linear1_bias;
-use node_linear2_weight::get_node_linear2_weight;
-use node_linear2_bias::get_node_linear2_bias;
-use node_linear3_weight::get_node_linear3_weight;
-use node_linear3_bias::get_node_linear3_bias;
-
-use _constant_value::get__constant_value;
-
-fn main(node_onnx_reshape_0: Tensor<FP16x16>) -> Tensor<FP16x16> {
-let node__constant_output_0 = get__constant_value();
-let node__reshape_output_0 = TensorTrait::reshape(@node_onnx_reshape_0, node__constant_output_0.data);
-let node__linear1_gemm_output_0 = NNTrait::gemm(node__reshape_output_0, get_node_linear1_weight(), Option::Some(get_node_linear1_bias()), Option::Some(FP16x16 { mag: 65536, sign: false }), Option::Some(FP16x16 { mag: 65536, sign: false }), false, true);
-let node__relu_relu_output_0 = NNTrait::relu(@node__linear1_gemm_output_0);
-let node__linear2_gemm_output_0 = NNTrait::gemm(node__relu_relu_output_0, get_node_linear2_weight(), Option::Some(get_node_linear2_bias()), Option::Some(FP16x16 { mag: 65536, sign: false }), Option::Some(FP16x16 { mag: 65536, sign: false }), false, true);
-let node__relu_1_relu_output_0 = NNTrait::relu(@node__linear2_gemm_output_0);
-let node_13 = NNTrait::gemm(node__relu_1_relu_output_0, get_node_linear3_weight(), Option::Some(get_node_linear3_bias()), Option::Some(FP16x16 { mag: 65536, sign: false }), Option::Some(FP16x16 { mag: 65536, sign: false }), false, true);
-
-        node_13
-    }
\ No newline at end of file
diff --git a/examples/on-chain_mnist/conversion_and_test.py b/examples/on-chain_mnist/conversion_and_test.py
deleted file mode 100644
index 4b93f7d..0000000
--- a/examples/on-chain_mnist/conversion_and_test.py
+++ /dev/null
@@ -1,42 +0,0 @@
-from osiris.app import (serializer, create_tensor_from_array, convert)
-import requests
-from PIL import Image
-import numpy as np
-
-def download_image():
-    image_url = 'https://machinelearningmastery.com/wp-content/uploads/2019/02/sample_image.png'
-    image_data = requests.get(image_url).content
-    with open('seven.png', 'wb') as handler:
-        handler.write(image_data)
-
-def get_image(path):
-    with Image.open(path) as img:
-        img = img.convert('L')
-        img = np.array(img)
-    return img
-
-def process_image(img):
-    img = np.resize(img, (28,28))
-    img = img.reshape(1,1,28,28)
-    img = img/255.0
-    print(img.shape)
-    return img
-
-def serialize_image(img):
-    fp_impl = "FP16x16"
-    tensor = create_tensor_from_array(img, fp_impl)
-    serialized = serializer(tensor)
-    print(serialized)
-    
-# def convert_image(img):
-#     convert(img, "./out.cairo")
-
-def main():
-    download_image()
-    img = get_image('seven.png')
-    img = process_image(img)
-    serialize_image(img)
-    # convert_image(img)
-    
-if __name__ == '__main__':
-    main()
\ No newline at end of file
diff --git a/giza_actions/agent.py b/giza_actions/agent.py
index 2125364..0f1225e 100644
--- a/giza_actions/agent.py
+++ b/giza_actions/agent.py
@@ -12,7 +12,7 @@
 import logging
 from giza.frameworks.cairo import verify
 from giza_actions.utils import get_endpoint_uri
-from giza.client import DeploymentsClient
+from giza.client import EndpointsClient
 from giza import API_HOST
 from pydantic import BaseModel
 from dotenv import load_dotenv
@@ -23,9 +23,10 @@
 
 # todo: extend to have request_id, endpoint_id: giza models (model_id and version_id), and version_id; remove proof_path from this and dependencies
 class ProofType(BaseModel):
-    model_id: int # The model being used for inference
-    proof_path: Optional[str] # The path to the proof of inference
     address: Address # Who is the signer?
+    model_id: int # The model being used for inference
+    version_id: int # The version of the model in reference
+    endpoint_id: int # The endpoint of the deployed model
     
     class Config:
         protected_namespaces = ()
@@ -52,7 +53,7 @@ class GizaAgent(GizaModel):
         verify: verifies the proof locally
         deploy: verifies the proof, then calls the smart contract with calldata from inference
     """
-    
+    #TODO: (GIZ 502) Find a way to abstract away the chain_id to just a string with the chain name
     def __init__(self, contract_address: str, chain_id: int, id: Optional[int] = None, version: Optional[int] = None, **kwargs):
         """Initialize deployer.
 
@@ -66,15 +67,22 @@ def __init__(self, contract_address: str, chain_id: int, id: Optional[int] = Non
         super().__init__(id=id, version=version, **kwargs)
         contract_sc = Web3.to_checksum_address(contract_address)
         
-        #TODO: How dow we get the endpoint id from this?
+        #TODO: (GIZ 501) How dow we get the endpoint id from this?
         self.endpoint_uri = get_endpoint_uri(self.model_id, self.version_id)
+        
+        # self.endpoint_id = 
 
         self.contract_address = contract_sc
         self.chain_id = chain_id
 
     def infer(self, input_file=None, input_feed=None, job_size="S"):
         """
-        Need docs on these ASAP
+        Runs a round of inference on the model and saves the result.
+        
+        Args:
+            input_file: The input file to use for inference
+            input_feed: The input feed to use for inference
+            job_size: The size of the job to run
         """
         params = {}
         
@@ -93,16 +101,22 @@ def infer(self, input_file=None, input_feed=None, job_size="S"):
         print("Inference saved! ✅ Result: ", self.inference, self.request_id)
         
     def get_model_data(self):
-        """Get proof data from GCP and save it as a class attribute"""
-        client = DeploymentsClient(API_HOST)
+        """
+        Get proof data from GCP and save it as a class attribute
+        
+        Returns:
+            proof: The zk proof from GCP
+            proof_path: The path to the proof file
+        """
+        client = EndpointsClient(API_HOST)
 
-        # get this from CLI
         proof_metadata_url = f"https://api.gizatech.xyz/api/v1/models/{self.model_id}/versions/{self.version_id}/endpoints/{self.endpoint_uri}/proofs/{self.request_id}:download"
 
         time.sleep(3)
         logging.info(f"Fetching proof metadata from {proof_metadata_url}... ⏳")
 
         timeout = time.time() + 8000
+        #TODO: GIZ501 Add endpoint ID here too once we have it
         print(f"Request ID: {self.request_id}")
         print(f"Model ID: {self.model_id}")
         print(f"Version ID: {self.version_id}")
@@ -130,6 +144,7 @@ def get_model_data(self):
 
         return (content, os.path.abspath(proof_file))
     
+    # TODO: (GIZ500) Find a way to match function name with the specific function in the contract regardless of spaces, caps, etc. ALSO, add a method to bind types to the parameters
     async def _generate_calldata(self, function_name: str, parameters: list):
         """
         Generate calldata for calling a smart contract function
@@ -159,26 +174,19 @@ async def _generate_calldata(self, function_name: str, parameters: list):
         calldata = contract.encodeABI(function_name, args=parameters)
         return calldata
             
-    def sign_proof(self, account: Account, proof: Optional[bytes], proof_path: Optional[str]):
+    def sign_proof(self, account: Account, proof: bytes):
         address = account.address
         
-        proofType = ProofType(model_id=self.model_id, proof_path=proof_path, address=address)
+        proofType = ProofType(address=address, model_id=self.model_id, version_id=self.version_id, endpoint_id=self.endpoint_id)
         proofMessage = ProofMessage(proofType=proofType)
         
         version = b'\x19'
         header = b''
         
-        if proof is None:
-            dummy_message = "dummy_proof"
-            dummy_body = dummy_message.encode('utf-8')
-            dummy_signable_message = SignableMessage(version=version, header=header, body=dummy_body)
-            dummy_signature = account.sign_message(dummy_signable_message)
-            return (dummy_signature, True, proofMessage, dummy_signable_message)
-        
         if isinstance(proof, str):
             body = proof.encode('utf-8')
         else:
-            body = proof
+            body = proofMessage
         signable_message = SignableMessage(version=version, header=header, body=body)
         sig = account.sign_message(signable_message)
         return (sig, False, proofMessage, signable_message)