Argent Account POC on ZK Sync v2

Since Account Abstraction (AA) is not yet available on ZK Sync v2, the goal of this proof of concept (POC) is to deploy a smart contract based account and simulate AA through an execute() method called by the signer.

The minimal requirements are:

• Only one signer (no guardian) - signature validation at VM level (not in the contract code)
• Execute method with a single call (no multicall)
• Basic proxy pattern (just forwarding calls, no upgrade mechanism)

Get Started

After cloning the repository, run:

yarn
yarn hardhat compile 

Copy .env.exemple into .env and add there:

• INFURA_KEY: a valid Infura API key
• PRIVATE_KEY: the private key of an account with funds (ETH) on Goerli (at least 0.001 ETH)

Scripts are running on Goerli testnet:

• L1 explorer: https://goerli.etherscan.io
• L2 explorer: https://zksync2-testnet.zkscan.io

Run Scripts

Deposit from L1 to L2

yarn deposit

• Transfer 0.001 ETH from L1 to L2

Deploy ArgentAccountNoProxy

yarn deploy_no_proxy

• Deploy two ArgentAccountNoProxy
• Transfer ETH from signer to Account 1
• Call execute on Account 1 to transfer ETH to Account 2

Deploy ArgentAccount

yarn deploy

• Deploy one implementation of ArgentAccount
• Deploy two Proxy
• Transfer ETH from signer to Account 1
• Call execute on Account 1 to transfer ETH to Account 2

TO DO

Features

• Add a guardian with recovery and transaction co-signing logic
• Upgrade mechanism
• Multicalls in execute

Once AA is available

• Convert the POC using ZKSync AA framework
• Manage signatures:
  • How signatures will be available
  • Access to tx_hash ?
  • Implement is_valid_signature
  • ...
• Understand how to get the account address before deploying (CREATE2)
• Understand how fees are paid for account deployment

Issues

• Current Proxy pattern doesn't work, because it seems impossible to do a delegatecall in the proxy contructor.