ETH Price: $1,606.51 (+0.93%)
Gas: 6 Gwei
 
Transaction Hash
Method
Block
From
To
Value
Withdraw175872502023-06-29 20:11:2390 days 8 hrs ago1688069483IN
0xD9ebeB...70A56247
0 ETH0.0042220657.78745341
Withdraw123329292021-04-29 3:21:46882 days 1 hr ago1619666506IN
0xD9ebeB...70A56247
0 ETH0.0016656854
Withdraw110097132020-10-07 16:40:181085 days 12 hrs ago1602088818IN
0xD9ebeB...70A56247
0 ETH0.0041707292
Withdraw105862992020-08-03 10:31:161150 days 18 hrs ago1596450676IN
0xD9ebeB...70A56247
0 ETH0.0027639161
Withdraw100139392020-05-06 17:04:171239 days 11 hrs ago1588784657IN
0xD9ebeB...70A56247
0 ETH0.0005894913
Transfer98750062020-04-15 4:59:081260 days 23 hrs ago1586926748IN
0xD9ebeB...70A56247
0 ETH0.000044522
Withdraw97562372020-03-27 22:39:481279 days 6 hrs ago1585348788IN
0xD9ebeB...70A56247
0 ETH0.000059762.5
Deposit97562302020-03-27 22:38:111279 days 6 hrs ago1585348691IN
0xD9ebeB...70A56247
0 ETH0.000240942.5
Deposit97562082020-03-27 22:32:411279 days 6 hrs ago1585348361IN
0xD9ebeB...70A56247
0 ETH0.000059662
Deposit97561392020-03-27 22:18:161279 days 6 hrs ago1585347496IN
0xD9ebeB...70A56247
0 ETH0.000059782
Withdraw97561042020-03-27 22:11:291279 days 6 hrs ago1585347089IN
0xD9ebeB...70A56247
0 ETH0.00004782
Withdraw97560472020-03-27 22:00:361279 days 6 hrs ago1585346436IN
0xD9ebeB...70A56247
0 ETH0.000047782
0x01d6f75797560232020-03-27 21:55:091279 days 6 hrs ago1585346109IN
0xD9ebeB...70A56247
0 ETH0.000023261
Withdraw97559302020-03-27 21:36:051279 days 7 hrs ago1585344965IN
0xD9ebeB...70A56247
0 ETH0.000071643
Withdraw93200552020-01-20 18:43:061346 days 9 hrs ago1579545786IN
0xD9ebeB...70A56247
0 ETH0.000090592
Withdraw90373062019-12-02 9:18:311395 days 19 hrs ago1575278311IN
0xD9ebeB...70A56247
0 ETH0.000101172.5
Withdraw89393612019-11-15 16:11:401412 days 12 hrs ago1573834300IN
0xD9ebeB...70A56247
0 ETH0.000252536.25
Withdraw86574582019-10-01 16:09:311457 days 12 hrs ago1569946171IN
0xD9ebeB...70A56247
0 ETH0.000323768
Withdraw85867212019-09-20 14:26:521468 days 14 hrs ago1568989612IN
0xD9ebeB...70A56247
0 ETH0.0010133525
Withdraw83500652019-08-14 17:44:021505 days 10 hrs ago1565804642IN
0xD9ebeB...70A56247
0 ETH0.000173546.25
Withdraw83094062019-08-08 10:23:401511 days 18 hrs ago1565259820IN
0xD9ebeB...70A56247
0 ETH0.000152243.75
Add Signer82009182019-07-22 14:09:461528 days 14 hrs ago1563804586IN
0xD9ebeB...70A56247
0 ETH0.00004411
Withdraw81869372019-07-20 10:11:041530 days 18 hrs ago1563617464IN
0xD9ebeB...70A56247
0 ETH0.000012160.3
Withdraw81772052019-07-18 21:51:461532 days 6 hrs ago1563486706IN
0xD9ebeB...70A56247
0 ETH0.000050181.25
Deposit81764762019-07-18 19:06:191532 days 9 hrs ago1563476779IN
0xD9ebeB...70A56247
0 ETH0.0002282.5
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x1a9B2d...dEeBa26e
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
WrapperLock

Compiler Version
v0.4.24+commit.e67f0147

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2018-09-13
*/

pragma solidity 0.4.24;

/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  function totalSupply() public view returns (uint256);
  function balanceOf(address who) public view returns (uint256);
  function transfer(address to, uint256 value) public returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}
/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  function allowance(address owner, address spender) public view returns (uint256);
  function transferFrom(address from, address to, uint256 value) public returns (bool);
  function approve(address spender, uint256 value) public returns (bool);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

/**ERC20OldBasic.sol
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 */
contract ERC20OldBasic {
  function totalSupply() public view returns (uint256);
  function balanceOf(address who) public view returns (uint256);
  function transfer(address to, uint256 value) public;
  event Transfer(address indexed from, address indexed to, uint256 value);
}

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20Old is ERC20OldBasic {
  function allowance(address owner, address spender) public view returns (uint256);
  function transferFrom(address from, address to, uint256 value) public;
  function approve(address spender, uint256 value) public returns (bool);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {

  /**
  * @dev Multiplies two numbers, throws on overflow.
  */
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) {
      return 0;
    }
    uint256 c = a * b;
    assert(c / a == b);
    return c;
  }

  /**
  * @dev Integer division of two numbers, truncating the quotient.
  */
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return c;
  }

  /**
  * @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
  */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  /**
  * @dev Adds two numbers, throws on overflow.
  */
  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    assert(c >= a);
    return c;
  }
}

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
contract BasicToken is ERC20Basic {
  using SafeMath for uint256;

  mapping(address => uint256) balances;

  uint256 totalSupply_;

  /**
  * @dev total number of tokens in existence
  */
  function totalSupply() public view returns (uint256) {
    return totalSupply_;
  }

  /**
  * @dev transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) public returns (bool) {
    require(_to != address(0));
    require(_value <= balances[msg.sender]);

    // SafeMath.sub will throw if there is not enough balance.
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    Transfer(msg.sender, _to, _value);
    return true;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the the balance of.
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) public view returns (uint256 balance) {
    return balances[_owner];
  }

}

/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
contract Ownable {
  address public owner;


  event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);


  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  function Ownable() public {
    owner = msg.sender;
  }

  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }

  /**
   * @dev Allows the current owner to transfer control of the contract to a newOwner.
   * @param newOwner The address to transfer ownership to.
   */
  function transferOwnership(address newOwner) public onlyOwner {
    require(newOwner != address(0));
    OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }

}

/*

  Copyright Ethfinex Inc 2018

  Licensed under the Apache License, Version 2.0
  http://www.apache.org/licenses/LICENSE-2.0

*/

contract WrapperLock is BasicToken, Ownable {
    using SafeMath for uint256;

    address public TRANSFER_PROXY_VEFX = 0x7e03d2b8edc3585ecd8a5807661fff0830a0b603;
    address public TRANSFER_PROXY_V2 = 0x2240Dab907db71e64d3E0dbA4800c83B5C502d4E;
    mapping (address => bool) public isSigner;

    bool public erc20old;
    string public name;
    string public symbol;
    uint public decimals;
    address public originalToken;

    mapping (address => uint256) public depositLock;
    mapping (address => uint256) public balances;

    function WrapperLock(address _originalToken, string _name, string _symbol, uint _decimals, bool _erc20old) Ownable() {
        originalToken = _originalToken;
        name = _name;
        symbol = _symbol;
        decimals = _decimals;
        isSigner[msg.sender] = true;
        erc20old = _erc20old;
    }

    function deposit(uint _value, uint _forTime) public returns (bool success) {
        require(_forTime >= 1);
        require(now + _forTime * 1 hours >= depositLock[msg.sender]);
        if (erc20old) {
            ERC20Old(originalToken).transferFrom(msg.sender, address(this), _value);
        } else {
            require(ERC20(originalToken).transferFrom(msg.sender, address(this), _value));
        }
        balances[msg.sender] = balances[msg.sender].add(_value);
        totalSupply_ = totalSupply_.add(_value);
        depositLock[msg.sender] = now + _forTime * 1 hours;
        return true;
    }

    function withdraw(
        uint _value,
        uint8 v,
        bytes32 r,
        bytes32 s,
        uint signatureValidUntilBlock
    )
        public
        returns
        (bool success)
    {
        require(balanceOf(msg.sender) >= _value);
        if (now <= depositLock[msg.sender]) {
            require(block.number < signatureValidUntilBlock);
            require(isValidSignature(keccak256(msg.sender, address(this), signatureValidUntilBlock), v, r, s));
        }
        balances[msg.sender] = balances[msg.sender].sub(_value);
        totalSupply_ = totalSupply_.sub(_value);
        depositLock[msg.sender] = 0;
        if (erc20old) {
            ERC20Old(originalToken).transfer(msg.sender, _value);
        } else {
            require(ERC20(originalToken).transfer(msg.sender, _value));
        }
        return true;
    }

    function withdrawBalanceDifference() public onlyOwner returns (bool success) {
        require(ERC20(originalToken).balanceOf(address(this)).sub(totalSupply_) > 0);
        if (erc20old) {
            ERC20Old(originalToken).transfer(msg.sender, ERC20(originalToken).balanceOf(address(this)).sub(totalSupply_));
        } else {
            require(ERC20(originalToken).transfer(msg.sender, ERC20(originalToken).balanceOf(address(this)).sub(totalSupply_)));
        }
        return true;
    }

    function withdrawDifferentToken(address _differentToken, bool _erc20old) public onlyOwner returns (bool) {
        require(_differentToken != originalToken);
        require(ERC20(_differentToken).balanceOf(address(this)) > 0);
        if (_erc20old) {
            ERC20Old(_differentToken).transfer(msg.sender, ERC20(_differentToken).balanceOf(address(this)));
        } else {
            require(ERC20(_differentToken).transfer(msg.sender, ERC20(_differentToken).balanceOf(address(this))));
        }
        return true;
    }

    function transfer(address _to, uint256 _value) public returns (bool) {
        return false;
    }

    function transferFrom(address _from, address _to, uint _value) public {
        require(isSigner[_to] || isSigner[_from]);
        assert(msg.sender == TRANSFER_PROXY_VEFX || msg.sender == TRANSFER_PROXY_V2);
        balances[_to] = balances[_to].add(_value);
        depositLock[_to] = depositLock[_to] > now ? depositLock[_to] : now + 1 hours;
        balances[_from] = balances[_from].sub(_value);
        Transfer(_from, _to, _value);
    }

    function allowance(address _owner, address _spender) public constant returns (uint) {
        if (_spender == TRANSFER_PROXY_VEFX || _spender == TRANSFER_PROXY_V2) {
            return 2**256 - 1;
        }
    }

    function balanceOf(address _owner) public constant returns (uint256) {
        return balances[_owner];
    }

    function isValidSignature(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    )
        public
        constant
        returns (bool)
    {
        return isSigner[ecrecover(
            keccak256("\x19Ethereum Signed Message:\n32", hash),
            v,
            r,
            s
        )];
    }

    function addSigner(address _newSigner) public {
        require(isSigner[msg.sender]);
        isSigner[_newSigner] = true;
    }

    function keccak(address _sender, address _wrapper, uint _validTill) public constant returns(bytes32) {
        return keccak256(_sender, _wrapper, _validTill);
    }

}

Contract Security Audit

Contract ABI

[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"withdrawBalanceDifference","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"originalToken","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_value","type":"uint256"},{"name":"v","type":"uint8"},{"name":"r","type":"bytes32"},{"name":"s","type":"bytes32"},{"name":"signatureValidUntilBlock","type":"uint256"}],"name":"withdraw","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"balances","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"TRANSFER_PROXY_VEFX","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_sender","type":"address"},{"name":"_wrapper","type":"address"},{"name":"_validTill","type":"uint256"}],"name":"keccak","outputs":[{"name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"isSigner","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"hash","type":"bytes32"},{"name":"v","type":"uint8"},{"name":"r","type":"bytes32"},{"name":"s","type":"bytes32"}],"name":"isValidSignature","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"erc20old","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"TRANSFER_PROXY_V2","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"depositLock","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_differentToken","type":"address"},{"name":"_erc20old","type":"bool"}],"name":"withdrawDifferentToken","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_value","type":"uint256"},{"name":"_forTime","type":"uint256"}],"name":"deposit","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_newSigner","type":"address"}],"name":"addSigner","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"_originalToken","type":"address"},{"name":"_name","type":"string"},{"name":"_symbol","type":"string"},{"name":"_decimals","type":"uint256"},{"name":"_erc20old","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"}]

Deployed Bytecode

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Swarm Source

bzzr://d8ce1e95c3f406f7e09f5a4f24ed3067e36288ad833e5aca435a2da34df45cb5

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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.