ETH Price: $3,391.19 (+1.95%)

Contract

0x137Dcd97872dE27a4d3bf36A4643c5e18FA40713
 

Overview

ETH Balance

0.2499 ETH

Eth Value

$847.46 (@ $3,391.19/ETH)

More Info

Private Name Tags

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Execute230974772025-08-08 16:17:1189 days ago1754669831IN
0x137Dcd97...18FA40713
0 ETH0.0007458110
Execute230974752025-08-08 16:16:4789 days ago1754669807IN
0x137Dcd97...18FA40713
0 ETH0.000745710
Execute230974722025-08-08 16:16:1189 days ago1754669771IN
0x137Dcd97...18FA40713
0 ETH0.0007458210
Execute230920002025-08-07 21:55:4790 days ago1754603747IN
0x137Dcd97...18FA40713
0 ETH0.0006850610
Execute230919822025-08-07 21:52:1190 days ago1754603531IN
0x137Dcd97...18FA40713
0 ETH0.0006854210
Execute230919572025-08-07 21:47:1190 days ago1754603231IN
0x137Dcd97...18FA40713
0 ETH0.000685310
Execute230919492025-08-07 21:45:3590 days ago1754603135IN
0x137Dcd97...18FA40713
0 ETH0.0007844610
Execute230919472025-08-07 21:45:1190 days ago1754603111IN
0x137Dcd97...18FA40713
0 ETH0.0007455710
Execute230919382025-08-07 21:43:2390 days ago1754603003IN
0x137Dcd97...18FA40713
0 ETH0.0009648610
Execute230919272025-08-07 21:41:1190 days ago1754602871IN
0x137Dcd97...18FA40713
0 ETH0.000685310
Execute230919172025-08-07 21:39:1190 days ago1754602751IN
0x137Dcd97...18FA40713
0 ETH0.0007844610
Execute230919152025-08-07 21:38:4790 days ago1754602727IN
0x137Dcd97...18FA40713
0 ETH0.0007459310
Execute230919082025-08-07 21:37:2390 days ago1754602643IN
0x137Dcd97...18FA40713
0 ETH0.0009648610
Execute230918842025-08-07 21:32:3590 days ago1754602355IN
0x137Dcd97...18FA40713
0 ETH0.0007840210
Execute230918812025-08-07 21:31:5990 days ago1754602319IN
0x137Dcd97...18FA40713
0 ETH0.0007844610
Execute230918782025-08-07 21:31:2390 days ago1754602283IN
0x137Dcd97...18FA40713
0 ETH0.0007429510
Execute230918752025-08-07 21:30:4790 days ago1754602247IN
0x137Dcd97...18FA40713
0 ETH0.0007429610
Execute230918732025-08-07 21:30:2390 days ago1754602223IN
0x137Dcd97...18FA40713
0 ETH0.0007430810
Execute230918702025-08-07 21:29:4790 days ago1754602187IN
0x137Dcd97...18FA40713
0 ETH0.0009648610
Execute230918672025-08-07 21:29:1190 days ago1754602151IN
0x137Dcd97...18FA40713
0 ETH0.0009657510
Execute230918622025-08-07 21:28:1190 days ago1754602091IN
0x137Dcd97...18FA40713
0 ETH0.0009657510
Execute230912002025-08-07 19:14:3590 days ago1754594075IN
0x137Dcd97...18FA40713
0 ETH0.0007274910
Execute215751682025-01-07 21:05:47302 days ago1736283947IN
0x137Dcd97...18FA40713
0 ETH0.0035702616.08032588
Execute211883362024-11-14 20:31:47356 days ago1731616307IN
0x137Dcd97...18FA40713
0 ETH0.0020712226.07737499
Execute211384922024-11-07 21:35:59363 days ago1731015359IN
0x137Dcd97...18FA40713
0 ETH0.0014473119.89134908
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Latest 2 internal transactions

Advanced mode:
Parent Transaction Hash Method Block
From
To
-123687412021-05-04 16:09:311646 days ago1620144571
0x137Dcd97...18FA40713
0.0011 ETH
-123687342021-05-04 16:07:381646 days ago1620144458
0x137Dcd97...18FA40713
0.001 ETH
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x0644Bd02...3591e5D33
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
SimpleMultiSig

Compiler Version
v0.4.24+commit.e67f0147

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2021-06-24
*/

pragma solidity ^0.4.24;

contract SimpleMultiSig {

// EIP712 Precomputed hashes:
// keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract,bytes32 salt)")
bytes32 constant EIP712DOMAINTYPE_HASH = 0xd87cd6ef79d4e2b95e15ce8abf732db51ec771f1ca2edccf22a46c729ac56472;

// keccak256("Simple MultiSig")
bytes32 constant NAME_HASH = 0xb7a0bfa1b79f2443f4d73ebb9259cddbcd510b18be6fc4da7d1aa7b1786e73e6;

// keccak256("1")
bytes32 constant VERSION_HASH = 0xc89efdaa54c0f20c7adf612882df0950f5a951637e0307cdcb4c672f298b8bc6;

// keccak256("MultiSigTransaction(address destination,uint256 value,bytes data,uint256 nonce,address executor,uint256 gasLimit)")
bytes32 constant TXTYPE_HASH = 0x3ee892349ae4bbe61dce18f95115b5dc02daf49204cc602458cd4c1f540d56d7;

bytes32 constant SALT = 0x251543af6a222378665a76fe38dbceae4871a070b7fdaf5c6c30cf758dc33cc0;

  uint public nonce;                 // (only) mutable state
  uint public threshold;             // immutable state
  mapping (address => bool) isOwner; // immutable state
  address[] public ownersArr;        // immutable state

  bytes32 DOMAIN_SEPARATOR;          // hash for EIP712, computed from contract address

  function owners() public view returns (address[]) {
    return ownersArr;
  }

  // Note that owners_ must be strictly increasing, in order to prevent duplicates
  function setOwners_(uint threshold_, address[] owners_) private {
    require(owners_.length <= 20 && threshold_ <= owners_.length && threshold_ > 0);

    // remove old owners from map
    for (uint i = 0; i < ownersArr.length; i++) {
      isOwner[ownersArr[i]] = false;
    }

    // add new owners to map
    address lastAdd = address(0);
    for (i = 0; i < owners_.length; i++) {
      require(owners_[i] > lastAdd);
      isOwner[owners_[i]] = true;
      lastAdd = owners_[i];
    }

    // set owners array and threshold
    ownersArr = owners_;
    threshold = threshold_;
  }

  constructor(uint threshold_, address[] owners_, uint chainId) public {
    setOwners_(threshold_, owners_);

    DOMAIN_SEPARATOR = keccak256(abi.encode(EIP712DOMAINTYPE_HASH,
                                            NAME_HASH,
                                            VERSION_HASH,
                                            chainId,
                                            this,
                                            SALT));
  }

  // Requires a quorum of owners to call from this contract using execute
  function setOwners(uint threshold_, address[] owners_) external {
    require(msg.sender == address(this));
    setOwners_(threshold_, owners_);
  }

  // Note that address recovered from signatures must be strictly increasing, in order to prevent duplicates
  function execute(uint8[] sigV, bytes32[] sigR, bytes32[] sigS, address destination, uint value, bytes data, address executor, uint gasLimit) public {
    require(sigR.length == threshold);
    require(sigR.length == sigS.length && sigR.length == sigV.length);
    require(executor == msg.sender || executor == address(0));

    // EIP712 scheme: https://github.com/ethereum/EIPs/blob/master/EIPS/eip-712.md
    bytes32 txInputHash = keccak256(abi.encode(TXTYPE_HASH, destination, value, keccak256(data), nonce, executor, gasLimit));
    bytes32 totalHash = keccak256(abi.encodePacked("\x19\x01", DOMAIN_SEPARATOR, txInputHash));

    address lastAdd = address(0); // cannot have address(0) as an owner
    for (uint i = 0; i < threshold; i++) {
      address recovered = ecrecover(totalHash, sigV[i], sigR[i], sigS[i]);
      require(recovered > lastAdd && isOwner[recovered]);
      lastAdd = recovered;
    }

    // If we make it here all signatures are accounted for.
    // The address.call() syntax is no longer recommended, see:
    // https://github.com/ethereum/solidity/issues/2884
    nonce = nonce + 1;
    bool success = false;
    assembly { success := call(gasLimit, destination, value, add(data, 0x20), mload(data), 0, 0) }
    require(success);
  }

  function () payable external {}
}

Contract Security Audit

Contract ABI

API
[{"constant":true,"inputs":[],"name":"threshold","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"sigV","type":"uint8[]"},{"name":"sigR","type":"bytes32[]"},{"name":"sigS","type":"bytes32[]"},{"name":"destination","type":"address"},{"name":"value","type":"uint256"},{"name":"data","type":"bytes"},{"name":"executor","type":"address"},{"name":"gasLimit","type":"uint256"}],"name":"execute","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"ownersArr","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owners","outputs":[{"name":"","type":"address[]"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"nonce","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"threshold_","type":"uint256"},{"name":"owners_","type":"address[]"}],"name":"setOwners","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"threshold_","type":"uint256"},{"name":"owners_","type":"address[]"},{"name":"chainId","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"}]

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Deployed Bytecode

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Swarm Source

bzzr://b64a6b48b8cf5ba778e8633b37621b5c5635bf66a15ba6263d89da684b3105a2

Block Uncle Number Difficulty Gas Used Reward
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.