ETH Price: $3,554.81 (+1.17%)
Gas: 34 Gwei

Contract

0x8AA72DD6045505836F643B39b82e70Fd705F9686
 

Multichain Info

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Transaction Hash
Method
Block
From
To
Value
Withdraw110097502020-10-07 16:50:001268 days ago1602089400IN
0x8AA72DD6...d705F9686
0 ETH0.0095659792
Withdraw82470502019-07-29 18:16:151704 days ago1564424175IN
0x8AA72DD6...d705F9686
0 ETH0.000088351
Add Signer82469852019-07-29 18:02:161704 days ago1564423336IN
0x8AA72DD6...d705F9686
0 ETH0.00017644
Withdraw82467172019-07-29 17:01:581704 days ago1564419718IN
0x8AA72DD6...d705F9686
0 ETH0.000040531.25
Withdraw81735192019-07-18 8:11:041715 days ago1563437464IN
0x8AA72DD6...d705F9686
0 ETH0.000668287.08182253
Withdraw81705762019-07-17 21:19:561716 days ago1563398396IN
0x8AA72DD6...d705F9686
0 ETH0.000167674
Deposit80992622019-07-06 18:07:421727 days ago1562436462IN
0x8AA72DD6...d705F9686
0 ETH0.000143073
Withdraw79831822019-06-18 15:51:531745 days ago1560873113IN
0x8AA72DD6...d705F9686
0 ETH0.000458675
Deposit79581902019-06-14 17:50:421749 days ago1560534642IN
0x8AA72DD6...d705F9686
0 ETH0.000059611.25
Deposit79500012019-06-13 11:05:531750 days ago1560423953IN
0x8AA72DD6...d705F9686
0 ETH0.000199651.375
Withdraw79016742019-06-05 21:46:181758 days ago1559771178IN
0x8AA72DD6...d705F9686
0 ETH0.000110361.25
Deposit79015542019-06-05 21:19:351758 days ago1559769575IN
0x8AA72DD6...d705F9686
0 ETH0.000181341.25
Deposit78169662019-05-23 16:15:251771 days ago1558628125IN
0x8AA72DD6...d705F9686
0 ETH0.0005246211
Deposit78046122019-05-21 17:46:511773 days ago1558460811IN
0x8AA72DD6...d705F9686
0 ETH0.0013007610
Withdraw76215572019-04-23 3:58:511801 days ago1555991931IN
0x8AA72DD6...d705F9686
0 ETH0.000331333.75
Deposit76215442019-04-23 3:56:211801 days ago1555991781IN
0x8AA72DD6...d705F9686
0 ETH0.000544273.75
Deposit75908302019-04-18 9:07:411806 days ago1555578461IN
0x8AA72DD6...d705F9686
0 ETH0.00072575
Deposit74583812019-03-28 17:32:521827 days ago1553794372IN
0x8AA72DD6...d705F9686
0 ETH0.000190774
Deposit74578952019-03-28 15:45:421827 days ago1553787942IN
0x8AA72DD6...d705F9686
0 ETH0.0006269310
Deposit73668442019-03-14 11:28:351841 days ago1552562915IN
0x8AA72DD6...d705F9686
0 ETH0.000200613.2
Deposit73426372019-03-10 16:58:531845 days ago1552237133IN
0x8AA72DD6...d705F9686
0 ETH0.000159651.1
Withdraw72713962019-02-26 19:22:511857 days ago1551208971IN
0x8AA72DD6...d705F9686
0 ETH0.000570546.25
Deposit72001612019-02-09 23:36:081873 days ago1549755368IN
0x8AA72DD6...d705F9686
0 ETH0.0014520410
Withdraw71343402019-01-27 13:38:251887 days ago1548596305IN
0x8AA72DD6...d705F9686
0 ETH0.000102841.3
Deposit67751922018-11-26 8:36:581949 days ago1543221418IN
0x8AA72DD6...d705F9686
0 ETH0.0023040820
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x1a9B2d82...8dEeBa26e
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

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ransferred","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.