diff --git a/.github/workflows/elixir.yml b/.github/workflows/elixir.yml
index d739017..405761d 100644
--- a/.github/workflows/elixir.yml
+++ b/.github/workflows/elixir.yml
@@ -52,8 +52,6 @@ jobs:
           --health-timeout 5s
           --health-retries 5
 
-    env:
-      MIX_ENV: test
 
     steps:
       - name: Checkout
@@ -78,6 +76,14 @@ jobs:
           mix ecto.drop
           mix ecto.create
           mix ecto.migrate
+
+      - name: Create .env file
+        run: |
+          echo "PRIVATE_KEY=${{ secrets.PRIVATE_KEY }}" >> .env
+          echo "ADDRESS=${{ secrets.ADDRESS }}" >> .env
+          echo "PROVIDER_URL=${{ secrets.PROVIDER_URL }}" >> .env
+          echo "CONTRACT_ADDRESS=${{ secrets.CONTRACT_ADDRESS }}" >> .env
+          echo "CHAIN_ID=${{ secrets.CHAIN_ID }}" >> .env
       - name: Run tests
         env:
           MIX_ENV: test
diff --git a/backend/.gitignore b/backend/.gitignore
index a0ef45d..3cfce4a 100644
--- a/backend/.gitignore
+++ b/backend/.gitignore
@@ -25,3 +25,4 @@ erl_crash.dump
 # Ignore package tarball (built via "mix hex.build").
 peach-*.tar
 
+.env
diff --git a/backend/config/runtime.exs b/backend/config/runtime.exs
index b7b1d39..681230c 100644
--- a/backend/config/runtime.exs
+++ b/backend/config/runtime.exs
@@ -20,6 +20,15 @@ if System.get_env("PHX_SERVER") do
   config :peach, PeachWeb.Endpoint, server: true
 end
 
+env = Dotenv.load()
+
+config :peach, Peach.Config,
+  private_key: env.values["PRIVATE_KEY"],
+  address: env.values["ADDRESS"],
+  provider_url: env.values["PROVIDER_URL"],
+  contract_address: env.values["CONTRACT_ADDRESS"],
+  chain_id: env.values["CHAIN_ID"]
+
 if config_env() == :prod do
   database_url =
     System.get_env("DATABASE_URL") ||
diff --git a/backend/lib/peach/calldata_builder.ex b/backend/lib/peach/calldata_builder.ex
new file mode 100644
index 0000000..85ca458
--- /dev/null
+++ b/backend/lib/peach/calldata_builder.ex
@@ -0,0 +1,87 @@
+defmodule Peach.CalldataBuilder do
+  @moduledoc """
+  Converts an Event struct into a calldata list for the smart contract.
+  """
+
+  import Bitwise
+
+  def build_calldata(event) do
+    # 1. Event ID as u64
+    event_id = to_u64(event.id)
+
+    # 2. Ticket Tiers
+    ticket_tiers_params = build_ticket_tiers_params(event.ticket_tiers)
+
+    # Combine all parts into the calldata list
+    ["0x" <> Integer.to_string(event_id, 16)] ++
+      Enum.map(ticket_tiers_params, &("0x" <> Integer.to_string(&1, 16))) ++
+      [event.treasury]
+  end
+
+  defp to_u64(value) do
+    value
+    |> to_integer()
+    |> check_integer_size(64)
+  end
+
+  defp build_ticket_tiers_params(ticket_tiers) do
+    # Number of ticket tiers
+    len = length(ticket_tiers)
+
+    # Flattened list of ticket tier parameters
+    tiers_params =
+      ticket_tiers
+      |> Enum.flat_map(&ticket_tier_to_params/1)
+
+    [len] ++ tiers_params
+  end
+
+  defp ticket_tier_to_params(tier) do
+    # Convert price to u256 (two u128)
+    {price_low, price_high} = to_u256(tier.price)
+
+    # Convert max_supply to u32
+    max_supply = tier.max_supply |> to_integer() |> check_integer_size(32)
+
+    [price_low, price_high, max_supply]
+  end
+
+  defp to_u256(value) do
+    # Convert the value to a big integer
+    bigint = to_integer(value)
+
+    # Split into low and high 128 bits
+    price_low = bigint &&& (1 <<< 128) - 1
+    price_high = bigint >>> 128
+
+    {price_low, price_high}
+  end
+
+  defp check_integer_size(value, bits) do
+    max_value = (1 <<< bits) - 1
+
+    if value < 0 or value > max_value do
+      raise ArgumentError, "Value #{value} does not fit in #{bits} bits"
+    else
+      value
+    end
+  end
+
+  defp to_integer(value) do
+    cond do
+      is_integer(value) ->
+        value
+
+      is_binary(value) ->
+        try do
+          String.to_integer(value)
+        rescue
+          ArgumentError ->
+            reraise ArgumentError, "Cannot parse integer from string: #{value}"
+        end
+
+      true ->
+        raise ArgumentError, "Cannot convert #{inspect(value)} to integer"
+    end
+  end
+end
diff --git a/backend/lib/peach/config.ex b/backend/lib/peach/config.ex
new file mode 100644
index 0000000..08187da
--- /dev/null
+++ b/backend/lib/peach/config.ex
@@ -0,0 +1,27 @@
+defmodule Peach.Config do
+  @moduledoc """
+  Provides access to application configuration.
+  """
+
+  @app :peach
+
+  def private_key do
+    Application.fetch_env!(@app, __MODULE__)[:private_key]
+  end
+
+  def address do
+    Application.fetch_env!(@app, __MODULE__)[:address]
+  end
+
+  def provider_url do
+    Application.fetch_env!(@app, __MODULE__)[:provider_url]
+  end
+
+  def contract_address do
+    Application.fetch_env!(@app, __MODULE__)[:contract_address]
+  end
+
+  def chain_id do
+    Application.fetch_env!(@app, __MODULE__)[:chain_id]
+  end
+end
diff --git a/backend/lib/peach/events.ex b/backend/lib/peach/events.ex
index a2c884b..16f3f5a 100644
--- a/backend/lib/peach/events.ex
+++ b/backend/lib/peach/events.ex
@@ -2,20 +2,55 @@ defmodule Peach.Events do
   @moduledoc """
   Manages the events for the peach app
   """
+  alias Peach.CalldataBuilder
+  alias Peach.Config
   alias Peach.Event
   alias Peach.Repo
+  alias Peach.TicketTiers
   import Ecto.Query
 
   @default_limit 50
   @default_event_id 0
 
+  @selector "0x005b3134506a8ff22ce883984545296af6e65577777882051fa04dc6ecb84e99"
+
   @doc """
   Creates an event with the given attributes.
   """
   def create_event(event \\ %{}) do
-    %Event{}
-    |> Event.changeset(event)
-    |> Repo.insert()
+    event =
+      %Event{}
+      |> Event.changeset(event)
+      |> Repo.insert()
+
+    case event do
+      {:ok, real_event} ->
+        calls = {
+          Config.contract_address(),
+          @selector,
+          CalldataBuilder.build_calldata(real_event)
+        }
+
+        Starknet.execute_tx(
+          Config.provider_url(),
+          Config.private_key(),
+          Config.address(),
+          Config.chain_id(),
+          [calls]
+        )
+
+      err ->
+        err
+    end
+
+    event
+  end
+
+  def remaining_event_tickets(event_id) do
+    Enum.map(TicketTiers.event_ticket_tiers(event_id), fn ticket_tier ->
+      {:ok, remaining} = TicketTiers.remaining_tickets(ticket_tier.id)
+      remaining
+    end)
   end
 
   @doc """
diff --git a/backend/lib/peach/ticket_tier.ex b/backend/lib/peach/ticket_tier.ex
index 0a94159..5e458c9 100644
--- a/backend/lib/peach/ticket_tier.ex
+++ b/backend/lib/peach/ticket_tier.ex
@@ -5,11 +5,12 @@ defmodule Peach.TicketTier do
   use Ecto.Schema
   import Ecto.Changeset
 
-  @derive {Jason.Encoder, only: [:id, :name, :description, :max_supply]}
+  @derive {Jason.Encoder, only: [:id, :name, :description, :max_supply, :price]}
   schema "ticket_tiers" do
     field :name, :string
     field :description, :string
     field :max_supply, :integer
+    field :price, :integer
 
     belongs_to :event, Peach.Event
 
@@ -19,7 +20,7 @@ defmodule Peach.TicketTier do
   @doc false
   def changeset(ticket_tier, attrs) do
     ticket_tier
-    |> cast(attrs, [:name, :description, :max_supply])
-    |> validate_required([:name, :description, :max_supply])
+    |> cast(attrs, [:name, :description, :max_supply, :price])
+    |> validate_required([:name, :description, :max_supply, :price])
   end
 end
diff --git a/backend/lib/peach/ticket_tiers.ex b/backend/lib/peach/ticket_tiers.ex
index 1700696..2aa777d 100644
--- a/backend/lib/peach/ticket_tiers.ex
+++ b/backend/lib/peach/ticket_tiers.ex
@@ -28,6 +28,7 @@ defmodule Peach.TicketTiers do
            id: ticket_tier.id,
            name: ticket_tier.name,
            description: ticket_tier.description,
+           price: ticket_tier.price,
            remaining: ticket_tier.max_supply - sold_tickets,
            max_supply: ticket_tier.max_supply
          }}
diff --git a/backend/lib/peach_web/controllers/event_controller.ex b/backend/lib/peach_web/controllers/event_controller.ex
index 1f5a4d3..425de08 100644
--- a/backend/lib/peach_web/controllers/event_controller.ex
+++ b/backend/lib/peach_web/controllers/event_controller.ex
@@ -36,7 +36,7 @@ defmodule PeachWeb.EventController do
   end
 
   @doc """
-  Updates the name of an event.
+  Updates an event.
   """
   def update(conn, %{"id" => id, "event" => event_params}) do
     case Events.update_event(id, event_params) do
@@ -55,4 +55,18 @@ defmodule PeachWeb.EventController do
         |> json(%{errors: errors})
     end
   end
+
+  def remaining_event_tickets(conn, %{"id" => id}) do
+    case Events.remaining_event_tickets(id) do
+      [] ->
+        conn
+        |> put_status(:not_found)
+        |> json(%{errors: "Event not found"})
+
+      ticket_tier ->
+        conn
+        |> put_status(:ok)
+        |> json(%{tickets: ticket_tier})
+    end
+  end
 end
diff --git a/backend/lib/peach_web/controllers/ticket_controller.ex b/backend/lib/peach_web/controllers/ticket_controller.ex
index 2e31b29..479ef35 100644
--- a/backend/lib/peach_web/controllers/ticket_controller.ex
+++ b/backend/lib/peach_web/controllers/ticket_controller.ex
@@ -19,6 +19,7 @@ defmodule PeachWeb.TicketController do
             %{
               "tier_id" => tier.id,
               "name" => tier.name,
+              "price" => tier.price,
               "description" => tier.description,
               "ticket_ids" => Enum.map(tickets, & &1.id) |> Enum.sort()
             }
diff --git a/backend/lib/peach_web/router.ex b/backend/lib/peach_web/router.ex
index 86ced37..60d8391 100644
--- a/backend/lib/peach_web/router.ex
+++ b/backend/lib/peach_web/router.ex
@@ -13,6 +13,7 @@ defmodule PeachWeb.Router do
     get "/tickets/:address", TicketController, :index
     get "/events/:id/ticket_tiers", TicketTierController, :index
     get "/ticket_tiers/:id", TicketTierController, :show
+    get "/events/:id/remaining_tickets", EventController, :remaining_event_tickets
   end
 
   # Enable LiveDashboard and Swoosh mailbox preview in development
diff --git a/backend/lib/starknet.ex b/backend/lib/starknet.ex
new file mode 100644
index 0000000..e5813aa
--- /dev/null
+++ b/backend/lib/starknet.ex
@@ -0,0 +1,10 @@
+defmodule Starknet do
+  @moduledoc """
+  Binding to call the starknet rust sdk to execute a transaction
+  """
+  use Rustler, otp_app: :peach, crate: "starknet"
+
+  # Fallback function in case the NIF is not loaded
+  def execute_tx(_provider_url, _private_key, _address, _chain_id, _calls),
+    do: :erlang.nif_error(:nif_not_loaded)
+end
diff --git a/backend/mix.exs b/backend/mix.exs
index 5ae70d9..f062221 100644
--- a/backend/mix.exs
+++ b/backend/mix.exs
@@ -51,7 +51,9 @@ defmodule Peach.MixProject do
       {:dns_cluster, "~> 0.1.1"},
       {:bandit, "~> 1.5"},
       {:credo, "~> 1.7", only: [:dev, :test], runtime: false},
-      {:excoveralls, "~> 0.18", only: [:test]}
+      {:excoveralls, "~> 0.18", only: [:test]},
+      {:dotenv, "~> 3.0.0"},
+      {:rustler, "~> 0.35.0"}
     ]
   end
 
diff --git a/backend/mix.lock b/backend/mix.lock
index 7650bf7..e1a96c7 100644
--- a/backend/mix.lock
+++ b/backend/mix.lock
@@ -6,6 +6,7 @@
   "db_connection": {:hex, :db_connection, "2.7.0", "b99faa9291bb09892c7da373bb82cba59aefa9b36300f6145c5f201c7adf48ec", [:mix], [{:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "dcf08f31b2701f857dfc787fbad78223d61a32204f217f15e881dd93e4bdd3ff"},
   "decimal": {:hex, :decimal, "2.1.1", "5611dca5d4b2c3dd497dec8f68751f1f1a54755e8ed2a966c2633cf885973ad6", [:mix], [], "hexpm", "53cfe5f497ed0e7771ae1a475575603d77425099ba5faef9394932b35020ffcc"},
   "dns_cluster": {:hex, :dns_cluster, "0.1.3", "0bc20a2c88ed6cc494f2964075c359f8c2d00e1bf25518a6a6c7fd277c9b0c66", [:mix], [], "hexpm", "46cb7c4a1b3e52c7ad4cbe33ca5079fbde4840dedeafca2baf77996c2da1bc33"},
+  "dotenv": {:hex, :dotenv, "3.0.0", "52a28976955070d8312a81d59105b57ecf5d6a755c728b49c70a7e2120e6cb40", [:mix], [], "hexpm", "f8a7d800b6b419a8d8a8bc5b5cd820a181c2b713aab7621794febe934f7bd84e"},
   "ecto": {:hex, :ecto, "3.12.3", "1a9111560731f6c3606924c81c870a68a34c819f6d4f03822f370ea31a582208", [:mix], [{:decimal, "~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "9efd91506ae722f95e48dc49e70d0cb632ede3b7a23896252a60a14ac6d59165"},
   "ecto_sql": {:hex, :ecto_sql, "3.12.0", "73cea17edfa54bde76ee8561b30d29ea08f630959685006d9c6e7d1e59113b7d", [:mix], [{:db_connection, "~> 2.4.1 or ~> 2.5", [hex: :db_connection, repo: "hexpm", optional: false]}, {:ecto, "~> 3.12", [hex: :ecto, repo: "hexpm", optional: false]}, {:myxql, "~> 0.7", [hex: :myxql, repo: "hexpm", optional: true]}, {:postgrex, "~> 0.19 or ~> 1.0", [hex: :postgrex, repo: "hexpm", optional: true]}, {:tds, "~> 2.1.1 or ~> 2.2", [hex: :tds, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.0 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "dc9e4d206f274f3947e96142a8fdc5f69a2a6a9abb4649ef5c882323b6d512f0"},
   "excoveralls": {:hex, :excoveralls, "0.18.3", "bca47a24d69a3179951f51f1db6d3ed63bca9017f476fe520eb78602d45f7756", [:mix], [{:castore, "~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "746f404fcd09d5029f1b211739afb8fb8575d775b21f6a3908e7ce3e640724c6"},
@@ -29,11 +30,14 @@
   "plug": {:hex, :plug, "1.16.1", "40c74619c12f82736d2214557dedec2e9762029b2438d6d175c5074c933edc9d", [:mix], [{:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:plug_crypto, "~> 1.1.1 or ~> 1.2 or ~> 2.0", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.3 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "a13ff6b9006b03d7e33874945b2755253841b238c34071ed85b0e86057f8cddc"},
   "plug_crypto": {:hex, :plug_crypto, "2.1.0", "f44309c2b06d249c27c8d3f65cfe08158ade08418cf540fd4f72d4d6863abb7b", [:mix], [], "hexpm", "131216a4b030b8f8ce0f26038bc4421ae60e4bb95c5cf5395e1421437824c4fa"},
   "postgrex": {:hex, :postgrex, "0.19.1", "73b498508b69aded53907fe48a1fee811be34cc720e69ef4ccd568c8715495ea", [:mix], [{:db_connection, "~> 2.1", [hex: :db_connection, repo: "hexpm", optional: false]}, {:decimal, "~> 1.5 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:table, "~> 0.1.0", [hex: :table, repo: "hexpm", optional: true]}], "hexpm", "8bac7885a18f381e091ec6caf41bda7bb8c77912bb0e9285212829afe5d8a8f8"},
+  "req": {:hex, :req, "0.5.6", "8fe1eead4a085510fe3d51ad854ca8f20a622aae46e97b302f499dfb84f726ac", [:mix], [{:brotli, "~> 0.3.1", [hex: :brotli, repo: "hexpm", optional: true]}, {:ezstd, "~> 1.0", [hex: :ezstd, repo: "hexpm", optional: true]}, {:finch, "~> 0.17", [hex: :finch, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:mime, "~> 2.0.6 or ~> 2.1", [hex: :mime, repo: "hexpm", optional: false]}, {:nimble_csv, "~> 1.0", [hex: :nimble_csv, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: true]}], "hexpm", "cfaa8e720945d46654853de39d368f40362c2641c4b2153c886418914b372185"},
+  "rustler": {:hex, :rustler, "0.35.0", "1e2e379e1150fab9982454973c74ac9899bd0377b3882166ee04127ea613b2d9", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:req, "~> 0.5", [hex: :req, repo: "hexpm", optional: false]}, {:toml, "~> 0.6", [hex: :toml, repo: "hexpm", optional: false]}], "hexpm", "a176bea1bb6711474f9dfad282066f2b7392e246459bf4e29dfff6d828779fdf"},
   "swoosh": {:hex, :swoosh, "1.17.1", "01295a82bddd2c6cac1e65856e29444d7c23c4501e0ebc69cea8a82018227e25", [:mix], [{:bandit, ">= 1.0.0", [hex: :bandit, repo: "hexpm", optional: true]}, {:cowboy, "~> 1.1 or ~> 2.4", [hex: :cowboy, repo: "hexpm", optional: true]}, {:ex_aws, "~> 2.1", [hex: :ex_aws, repo: "hexpm", optional: true]}, {:finch, "~> 0.6", [hex: :finch, repo: "hexpm", optional: true]}, {:gen_smtp, "~> 0.13 or ~> 1.0", [hex: :gen_smtp, repo: "hexpm", optional: true]}, {:hackney, "~> 1.9", [hex: :hackney, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:mail, "~> 0.2", [hex: :mail, repo: "hexpm", optional: true]}, {:mime, "~> 1.1 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:mua, "~> 0.2.3", [hex: :mua, repo: "hexpm", optional: true]}, {:multipart, "~> 0.4", [hex: :multipart, repo: "hexpm", optional: true]}, {:plug, "~> 1.9", [hex: :plug, repo: "hexpm", optional: true]}, {:plug_cowboy, ">= 1.0.0", [hex: :plug_cowboy, repo: "hexpm", optional: true]}, {:req, "~> 0.5 or ~> 1.0", [hex: :req, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.2 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "3b20d25e580cb79af631335a1bdcfbffd835c08ebcdc16e98577223a241a18a1"},
   "telemetry": {:hex, :telemetry, "1.3.0", "fedebbae410d715cf8e7062c96a1ef32ec22e764197f70cda73d82778d61e7a2", [:rebar3], [], "hexpm", "7015fc8919dbe63764f4b4b87a95b7c0996bd539e0d499be6ec9d7f3875b79e6"},
   "telemetry_metrics": {:hex, :telemetry_metrics, "1.0.0", "29f5f84991ca98b8eb02fc208b2e6de7c95f8bb2294ef244a176675adc7775df", [:mix], [{:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "f23713b3847286a534e005126d4c959ebcca68ae9582118ce436b521d1d47d5d"},
   "telemetry_poller": {:hex, :telemetry_poller, "1.1.0", "58fa7c216257291caaf8d05678c8d01bd45f4bdbc1286838a28c4bb62ef32999", [:rebar3], [{:telemetry, "~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "9eb9d9cbfd81cbd7cdd24682f8711b6e2b691289a0de6826e58452f28c103c8f"},
   "thousand_island": {:hex, :thousand_island, "1.3.5", "6022b6338f1635b3d32406ff98d68b843ba73b3aa95cfc27154223244f3a6ca5", [:mix], [{:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "2be6954916fdfe4756af3239fb6b6d75d0b8063b5df03ba76fd8a4c87849e180"},
+  "toml": {:hex, :toml, "0.7.0", "fbcd773caa937d0c7a02c301a1feea25612720ac3fa1ccb8bfd9d30d822911de", [:mix], [], "hexpm", "0690246a2478c1defd100b0c9b89b4ea280a22be9a7b313a8a058a2408a2fa70"},
   "websock": {:hex, :websock, "0.5.3", "2f69a6ebe810328555b6fe5c831a851f485e303a7c8ce6c5f675abeb20ebdadc", [:mix], [], "hexpm", "6105453d7fac22c712ad66fab1d45abdf049868f253cf719b625151460b8b453"},
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diff --git a/backend/native/starknet/Cargo.toml b/backend/native/starknet/Cargo.toml
new file mode 100644
index 0000000..7fd520d
--- /dev/null
+++ b/backend/native/starknet/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "starknet"
+version = "0.1.0"
+authors = []
+edition = "2021"
+
+[lib]
+name = "starknet"
+path = "src/lib.rs"
+crate-type = ["cdylib"]
+
+[dependencies]
+rustler = "0.34.0"
+starknet = "0.12.0"
+starknet-types-core = "0.1.7"
+tokio = { version = "1.40.0", features = ["rt-multi-thread"] }
diff --git a/backend/native/starknet/README.md b/backend/native/starknet/README.md
new file mode 100644
index 0000000..2ab3828
--- /dev/null
+++ b/backend/native/starknet/README.md
@@ -0,0 +1,20 @@
+# NIF for Elixir.Starknet
+
+## To build the NIF module:
+
+- Your NIF will now build along with your project.
+
+## To load the NIF:
+
+```elixir
+defmodule Starknet do
+  use Rustler, otp_app: :peach, crate: "starknet"
+
+  # When your NIF is loaded, it will override this function.
+  def add(_a, _b), do: :erlang.nif_error(:nif_not_loaded)
+end
+```
+
+## Examples
+
+[This](https://github.com/rusterlium/NifIo) is a complete example of a NIF written in Rust.
diff --git a/backend/native/starknet/src/lib.rs b/backend/native/starknet/src/lib.rs
new file mode 100644
index 0000000..1de715f
--- /dev/null
+++ b/backend/native/starknet/src/lib.rs
@@ -0,0 +1,104 @@
+use rustler::{Atom, Error};
+use starknet::accounts::{Account, ExecutionEncoding, SingleOwnerAccount};
+use starknet::core::types::Call;
+use starknet::providers::{jsonrpc::HttpTransport, JsonRpcClient, Url};
+use starknet::signers::{LocalWallet, SigningKey};
+use starknet_types_core::felt::Felt;
+use std::str::FromStr;
+use tokio::runtime::Runtime;
+macro_rules! handle_starknet_error {
+    ($e:expr, $err:expr) => {{
+        match $e.map_err(|_| $err) {
+            Ok(inner) => inner,
+            Err(ref error) => {
+                return Err(Error::Term(Box::new(starknet_error_to_term(error))));
+            }
+        }
+    }};
+}
+mod atoms {
+    rustler::atoms! {
+        ok,
+        error,
+        invalid_address,
+        invalid_calldata,
+        invalid_to_address,
+        invalid_selector,
+        invalid_pk,
+        invalid_provider_url,
+        invalid_transaction,
+    }
+}
+#[rustler::nif(schedule = "DirtyCpu")]
+fn execute_tx(
+    provider_url: &str,
+    private_key: &str,
+    address: &str,
+    chain_id: &str,
+    calls: Vec<(&str, &str, Vec<&str>)>,
+) -> Result<String, Error> {
+    let url = handle_starknet_error!(
+        Url::from_str(provider_url),
+        StarknetError::InvalidProviderUrl
+    );
+    let provider = JsonRpcClient::new(HttpTransport::new(url));
+    let pk = handle_starknet_error!(Felt::from_hex(private_key), StarknetError::InvalidPk);
+    let signer = LocalWallet::from_signing_key(SigningKey::from_secret_scalar(pk));
+    let address = handle_starknet_error!(Felt::from_hex(address), StarknetError::InvalidAddress);
+    let chain_id = Felt::from_bytes_be_slice(chain_id.as_bytes());
+    let account =
+        SingleOwnerAccount::new(provider, signer, address, chain_id, ExecutionEncoding::New);
+    let calls = calls
+        .iter()
+        .map(|(to, selector, calldata)| {
+            Ok(Call {
+                to: handle_starknet_error!(Felt::from_hex(to), StarknetError::InvalidToAddress),
+                selector: handle_starknet_error!(
+                    Felt::from_hex(selector),
+                    StarknetError::InvalidSelector
+                ),
+                calldata: calldata
+                    .iter()
+                    .map(|val| {
+                        Ok(handle_starknet_error!(
+                            Felt::from_hex(val),
+                            StarknetError::InvalidCalldata
+                        ))
+                    })
+                    .collect::<Result<Vec<Felt>, Error>>()?,
+            })
+        })
+        .collect::<Result<Vec<Call>, Error>>()?;
+    let tx = account.execute_v3(calls);
+
+    // Create a new Tokio runtime
+    let rt = Runtime::new().unwrap();
+
+    // Call the async function and block until it completes
+    let result = handle_starknet_error!(rt.block_on(tx.send()), StarknetError::InvalidTransaction);
+    Ok(result.transaction_hash.to_hex_string())
+}
+
+#[allow(clippy::enum_variant_names)]
+#[derive(Debug)]
+enum StarknetError {
+    InvalidAddress,
+    InvalidPk,
+    InvalidProviderUrl,
+    InvalidTransaction,
+    InvalidSelector,
+    InvalidCalldata,
+    InvalidToAddress,
+}
+fn starknet_error_to_term(err: &StarknetError) -> Atom {
+    match err {
+        StarknetError::InvalidProviderUrl => atoms::invalid_provider_url(),
+        StarknetError::InvalidAddress => atoms::invalid_address(),
+        StarknetError::InvalidPk => atoms::invalid_pk(),
+        StarknetError::InvalidTransaction => atoms::invalid_transaction(),
+        StarknetError::InvalidCalldata => atoms::invalid_calldata(),
+        StarknetError::InvalidSelector => atoms::invalid_selector(),
+        StarknetError::InvalidToAddress => atoms::invalid_to_address(),
+    }
+}
+rustler::init!("Elixir.Starknet");
diff --git a/backend/priv/native/libstarknet.so b/backend/priv/native/libstarknet.so
new file mode 100755
index 0000000..7e65117
Binary files /dev/null and b/backend/priv/native/libstarknet.so differ
diff --git a/backend/priv/repo/migrations/20241009140616_create_ticket_tiers.exs b/backend/priv/repo/migrations/20241009140616_create_ticket_tiers.exs
index 9984f2f..8e90ccb 100644
--- a/backend/priv/repo/migrations/20241009140616_create_ticket_tiers.exs
+++ b/backend/priv/repo/migrations/20241009140616_create_ticket_tiers.exs
@@ -6,6 +6,7 @@ defmodule Peach.Repo.Migrations.CreateTicketTiers do
       add :name, :string
       add :description, :string
       add :max_supply, :integer
+      add :price, :integer
       add :event_id, references(:events, on_delete: :nothing)
 
       timestamps(type: :utc_datetime)
diff --git a/backend/test/native/starknet_test.exs b/backend/test/native/starknet_test.exs
new file mode 100644
index 0000000..ce177f5
--- /dev/null
+++ b/backend/test/native/starknet_test.exs
@@ -0,0 +1,102 @@
+defmodule StarknetTest do
+  use ExUnit.Case
+  doctest Starknet
+
+  @moduletag :integration
+
+  setup_all do
+    # Ensure the NIF is loaded
+    Application.ensure_all_started(:starknet)
+    :ok
+  end
+
+  test "execute_tx with valid parameters returns transaction hash" do
+    calls = [
+      {
+        "0x049d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7",
+        "0x0083afd3f4caedc6eebf44246fe54e38c95e3179a5ec9ea81740eca5b482d12e",
+        [Peach.Config.address(), "0x01", "0x0"]
+      }
+    ]
+
+    tx_hash =
+      Starknet.execute_tx(
+        Peach.Config.provider_url(),
+        Peach.Config.private_key(),
+        Peach.Config.address(),
+        Peach.Config.chain_id(),
+        calls
+      )
+
+    assert String.starts_with?(tx_hash, "0x")
+  end
+
+  test "execute_tx with invalid provider URL returns error" do
+    provider_url = "invalid_url"
+    calls = []
+
+    result =
+      Starknet.execute_tx(
+        provider_url,
+        Peach.Config.private_key(),
+        Peach.Config.address(),
+        Peach.Config.chain_id(),
+        calls
+      )
+
+    assert {:error, :invalid_provider_url} = result
+  end
+
+  test "execute_tx with invalid private key returns error" do
+    private_key = "invalid_private_key"
+    calls = []
+
+    result =
+      Starknet.execute_tx(
+        Peach.Config.provider_url(),
+        private_key,
+        Peach.Config.address(),
+        Peach.Config.chain_id(),
+        calls
+      )
+
+    assert {:error, :invalid_pk} = result
+  end
+
+  test "execute_tx with invalid address returns error" do
+    address = "invalid_address"
+    calls = []
+
+    result =
+      Starknet.execute_tx(
+        Peach.Config.provider_url(),
+        Peach.Config.private_key(),
+        address,
+        Peach.Config.chain_id(),
+        calls
+      )
+
+    assert {:error, :invalid_address} = result
+  end
+
+  test "execute_tx with invalid calls returns error" do
+    calls = [
+      {
+        "invalid_contract_address",
+        "0x01",
+        ["0x01", "0x01"]
+      }
+    ]
+
+    result =
+      Starknet.execute_tx(
+        Peach.Config.provider_url(),
+        Peach.Config.private_key(),
+        Peach.Config.address(),
+        Peach.Config.chain_id(),
+        calls
+      )
+
+    assert {:error, :invalid_to_address} = result
+  end
+end
diff --git a/backend/test/peach_web/controllers/create_event_test.exs b/backend/test/peach_web/controllers/create_event_test.exs
index 91cd8fe..e4f1017 100644
--- a/backend/test/peach_web/controllers/create_event_test.exs
+++ b/backend/test/peach_web/controllers/create_event_test.exs
@@ -19,11 +19,13 @@ defmodule PeachWeb.EventCreateControllerTest do
       %{
         "name" => "General Admission",
         "description" => "Access to all sessions",
+        "price" => 5,
         "max_supply" => 100
       },
       %{
         "name" => "VIP",
         "description" => "Access to VIP sessions and perks",
+        "price" => 10,
         "max_supply" => 20
       }
     ]
diff --git a/backend/test/peach_web/controllers/remaining_tickets_events_test.exs b/backend/test/peach_web/controllers/remaining_tickets_events_test.exs
new file mode 100644
index 0000000..22f25b7
--- /dev/null
+++ b/backend/test/peach_web/controllers/remaining_tickets_events_test.exs
@@ -0,0 +1,81 @@
+defmodule PeachWeb.EventControllerTest do
+  use PeachWeb.ConnCase, async: true
+  alias Peach.{Event, Repo, Ticket, TicketTier}
+
+  setup do
+    event =
+      Repo.insert!(%Event{
+        name: "Sample Event",
+        start: ~N[2024-11-10 09:00:00],
+        end: ~N[2024-11-12 17:00:00]
+      })
+
+    vip_tier =
+      Repo.insert!(%TicketTier{
+        name: "VIP",
+        description: "Access to VIP areas",
+        price: 10,
+        max_supply: 50,
+        event_id: event.id
+      })
+
+    standard_tier =
+      Repo.insert!(%TicketTier{
+        name: "Standard",
+        description: "General admission",
+        price: 5,
+        max_supply: 200,
+        event_id: event.id
+      })
+
+    # Create a few tickets associated with this tier
+    _ticket1 = Repo.insert!(%Ticket{ticket_tier_id: vip_tier.id})
+    # Pass event and ticket tiers to each test case
+    _ticket2 = Repo.insert!(%Ticket{ticket_tier_id: vip_tier.id})
+
+    # Pass the event to each test case
+    {:ok, event: event, vip_tier: vip_tier, standard_tier: standard_tier}
+  end
+
+  test "returns remaining tickets for a valid event id", %{
+    conn: conn,
+    vip_tier: vip_tier,
+    standard_tier: standard_tier,
+    event: event
+  } do
+    # Call the remaining_event_tickets endpoint with a valid event ID
+    conn = get(conn, "/api/events/#{event.id}/remaining_tickets")
+
+    expected_response = %{
+      "tickets" => [
+        %{
+          "id" => vip_tier.id,
+          "name" => vip_tier.name,
+          "description" => vip_tier.description,
+          "price" => 10,
+          "max_supply" => vip_tier.max_supply,
+          "remaining" => 48
+        },
+        %{
+          "id" => standard_tier.id,
+          "name" => standard_tier.name,
+          "description" => standard_tier.description,
+          "price" => 5,
+          "max_supply" => standard_tier.max_supply,
+          "remaining" => standard_tier.max_supply
+        }
+      ]
+    }
+
+    # Assert the response status and content
+    assert json_response(conn, 200) == expected_response
+  end
+
+  test "returns error for an invalid event id", %{conn: conn} do
+    # Call the remaining_event_tickets endpoint with an invalid event ID
+    conn = get(conn, "/api/events/9999/remaining_tickets")
+
+    # Assert the response status and error message
+    assert json_response(conn, 404) == %{"errors" => "Event not found"}
+  end
+end
diff --git a/backend/test/peach_web/controllers/ticket_controller_test.exs b/backend/test/peach_web/controllers/ticket_controller_test.exs
index 4e193f8..f405236 100644
--- a/backend/test/peach_web/controllers/ticket_controller_test.exs
+++ b/backend/test/peach_web/controllers/ticket_controller_test.exs
@@ -21,6 +21,7 @@ defmodule PeachWeb.TicketControllerTest do
         name: "VIP",
         description: "Access to VIP sessions",
         max_supply: 100,
+        price: 10,
         event_id: event.id
       })
 
@@ -29,6 +30,7 @@ defmodule PeachWeb.TicketControllerTest do
         name: "Standard",
         description: "General admission",
         max_supply: 200,
+        price: 5,
         event_id: event.id
       })
 
@@ -84,12 +86,14 @@ defmodule PeachWeb.TicketControllerTest do
               "tier_id" => vip_ticket.ticket_tier_id,
               "name" => "VIP",
               "description" => "Access to VIP sessions",
+              "price" => 10,
               "ticket_ids" => [1, 2]
             },
             %{
               "tier_id" => standard_ticket.ticket_tier_id,
               "name" => "Standard",
               "description" => "General admission",
+              "price" => 5,
               "ticket_ids" => [3]
             }
           ]
diff --git a/backend/test/peach_web/controllers/ticket_tier_controller_test.exs b/backend/test/peach_web/controllers/ticket_tier_controller_test.exs
index 8f15604..1e132dd 100644
--- a/backend/test/peach_web/controllers/ticket_tier_controller_test.exs
+++ b/backend/test/peach_web/controllers/ticket_tier_controller_test.exs
@@ -16,6 +16,7 @@ defmodule PeachWeb.TicketTierControllerTest do
         name: "VIP",
         description: "Access to VIP areas",
         max_supply: 50,
+        price: 10,
         event_id: event.id
       })
 
@@ -24,6 +25,7 @@ defmodule PeachWeb.TicketTierControllerTest do
         name: "Standard",
         description: "General admission",
         max_supply: 200,
+        price: 5,
         event_id: event.id
       })
 
@@ -50,12 +52,14 @@ defmodule PeachWeb.TicketTierControllerTest do
           "id" => vip_tier.id,
           "name" => vip_tier.name,
           "description" => vip_tier.description,
+          "price" => vip_tier.price,
           "max_supply" => vip_tier.max_supply
         },
         %{
           "id" => standard_tier.id,
           "name" => standard_tier.name,
           "description" => standard_tier.description,
+          "price" => standard_tier.price,
           "max_supply" => standard_tier.max_supply
         }
       ]
@@ -69,9 +73,6 @@ defmodule PeachWeb.TicketTierControllerTest do
     # Send the GET request with an invalid event_id
     conn = get(conn, "/api/events/9999/ticket_tiers")
 
-    # Expected error response
-    expected_error = %{"errors" => "Event not found"}
-
     # Assert the response status and error message
     assert json_response(conn, 200) == %{"ticket_tiers" => []}
   end
@@ -90,6 +91,7 @@ defmodule PeachWeb.TicketTierControllerTest do
         "name" => ticket_tier.name,
         "description" => ticket_tier.description,
         "max_supply" => ticket_tier.max_supply,
+        "price" => ticket_tier.price,
         # Expected remaining tickets (50 - 2 tickets sold)
         "remaining" => 48
       }