ETH Price: $3,477.58 (-1.37%)
Gas: 26 Gwei

Contract

0x284be69BaC8C983a749956D7320729EB24bc75f9
 

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183828292023-10-19 7:14:47176 days ago1697699687  Contract Creation0 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
ERC6551Registry

Compiler Version
v0.8.17+commit.8df45f5f

Optimization Enabled:
Yes with 200 runs

Other Settings:
london EvmVersion
File 1 of 1 : ERC6551Registry.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

interface IERC6551Registry {
    /**
     * @dev The registry MUST emit the ERC6551AccountCreated event upon successful account creation.
     */
    event ERC6551AccountCreated(
        address account,
        address indexed implementation,
        bytes32 salt,
        uint256 chainId,
        address indexed tokenContract,
        uint256 indexed tokenId
    );

    /**
     * @dev The registry MUST revert with AccountCreationFailed error if the create2 operation fails.
     */
    error AccountCreationFailed();

    /**
     * @dev Creates a token bound account for a non-fungible token.
     *
     * If account has already been created, returns the account address without calling create2.
     *
     * Emits ERC6551AccountCreated event.
     *
     * @return account The address of the token bound account
     */
    function createAccount(
        address implementation,
        bytes32 salt,
        uint256 chainId,
        address tokenContract,
        uint256 tokenId
    ) external returns (address account);

    /**
     * @dev Returns the computed token bound account address for a non-fungible token.
     *
     * @return account The address of the token bound account
     */
    function account(
        address implementation,
        bytes32 salt,
        uint256 chainId,
        address tokenContract,
        uint256 tokenId
    ) external view returns (address account);
}

contract ERC6551Registry is IERC6551Registry {
    function createAccount(
        address implementation,
        bytes32 salt,
        uint256 chainId,
        address tokenContract,
        uint256 tokenId
    ) external returns (address) {
        assembly {
            // Memory Layout:
            // ----
            // 0x00   0xff                           (1 byte)
            // 0x01   registry (address)             (20 bytes)
            // 0x15   salt (bytes32)                 (32 bytes)
            // 0x35   Bytecode Hash (bytes32)        (32 bytes)
            // ----
            // 0x55   ERC-1167 Constructor + Header  (20 bytes)
            // 0x69   implementation (address)       (20 bytes)
            // 0x5D   ERC-1167 Footer                (15 bytes)
            // 0x8C   salt (uint256)                 (32 bytes)
            // 0xAC   chainId (uint256)              (32 bytes)
            // 0xCC   tokenContract (address)        (32 bytes)
            // 0xEC   tokenId (uint256)              (32 bytes)

            // Silence unused variable warnings
            pop(chainId)

            // Copy bytecode + constant data to memory
            calldatacopy(0x8c, 0x24, 0x80) // salt, chainId, tokenContract, tokenId
            mstore(0x6c, 0x5af43d82803e903d91602b57fd5bf3) // ERC-1167 footer
            mstore(0x5d, implementation) // implementation
            mstore(0x49, 0x3d60ad80600a3d3981f3363d3d373d3d3d363d73) // ERC-1167 constructor + header

            // Copy create2 computation data to memory
            mstore8(0x00, 0xff) // 0xFF
            mstore(0x35, keccak256(0x55, 0xb7)) // keccak256(bytedcode)
            mstore(0x01, shl(96, address())) // registry address
            mstore(0x15, salt) // salt

            // Compute account address
            let computed := keccak256(0x00, 0x55)

            // If the account has not yet been deployed
            if iszero(extcodesize(computed)) {
                // Deploy account contract
                let deployed := create2(0, 0x55, 0xb7, salt)

                // Revert if the deployment fails
                if iszero(deployed) {
                    mstore(0x00, 0x20188a59) // `AccountCreationFailed()`
                    revert(0x1c, 0x04)
                }

                // Store account address in memory before salt and chainId
                mstore(0x6c, deployed)

                // Emit the ERC6551AccountCreated event
                log4(
                    0x6c,
                    0x60,
                    // `ERC6551AccountCreated(address,address,bytes32,uint256,address,uint256)`
                    0x79f19b3655ee38b1ce526556b7731a20c8f218fbda4a3990b6cc4172fdf88722,
                    implementation,
                    tokenContract,
                    tokenId
                )

                // Return the account address
                return(0x6c, 0x20)
            }

            // Otherwise, return the computed account address
            mstore(0x00, shr(96, shl(96, computed)))
            return(0x00, 0x20)
        }
    }

    function account(
        address implementation,
        bytes32 salt,
        uint256 chainId,
        address tokenContract,
        uint256 tokenId
    ) external view returns (address) {
        assembly {
            // Silence unused variable warnings
            pop(chainId)
            pop(tokenContract)
            pop(tokenId)

            // Copy bytecode + constant data to memory
            calldatacopy(0x8c, 0x24, 0x80) // salt, chainId, tokenContract, tokenId
            mstore(0x6c, 0x5af43d82803e903d91602b57fd5bf3) // ERC-1167 footer
            mstore(0x5d, implementation) // implementation
            mstore(0x49, 0x3d60ad80600a3d3981f3363d3d373d3d3d363d73) // ERC-1167 constructor + header

            // Copy create2 computation data to memory
            mstore8(0x00, 0xff) // 0xFF
            mstore(0x35, keccak256(0x55, 0xb7)) // keccak256(bytedcode)
            mstore(0x01, shl(96, address())) // registry address
            mstore(0x15, salt) // salt

            // Store computed account address in memory
            mstore(0x00, shr(96, shl(96, keccak256(0x00, 0x55))))

            // Return computed account address
            return(0x00, 0x20)
        }
    }
}

Settings
{
  "remappings": [
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "@openzeppelin/=lib/openzeppelin-contracts/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[],"name":"AccountCreationFailed","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"implementation","type":"address"},{"indexed":false,"internalType":"bytes32","name":"salt","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"chainId","type":"uint256"},{"indexed":true,"internalType":"address","name":"tokenContract","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ERC6551AccountCreated","type":"event"},{"inputs":[{"internalType":"address","name":"implementation","type":"address"},{"internalType":"bytes32","name":"salt","type":"bytes32"},{"internalType":"uint256","name":"chainId","type":"uint256"},{"internalType":"address","name":"tokenContract","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"account","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"implementation","type":"address"},{"internalType":"bytes32","name":"salt","type":"bytes32"},{"internalType":"uint256","name":"chainId","type":"uint256"},{"internalType":"address","name":"tokenContract","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"createAccount","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"}]

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Deployed Bytecode

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