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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:

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.