Contract 0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d8

Dex  

 

Contract Overview

TokenStore
Balance:
1,221.840338865012968878 Ether

EtherValue:
$179,500.56 (@ $146.91/ETH)

Token:
TxHash Block Age From To Value [TxFee]
0xe4a998245baa197f577095d7e593f3da6e384330ebf472e39aadd24bf893ef84(pending)49 secs ago0xf90ca0671954e9bb83670d856576fa16c04f2a21  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0xf11e76bea3c96e94a20ed846723ec2f2cca454a5883a7abb35e3419aace1b3ce(pending)58 secs ago0xf90ca0671954e9bb83670d856576fa16c04f2a21  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0xbf0d72c64b2cced6ad8b2f4b153f25300cb577a794b3ae3981f93bffef3f9517(pending)1 min ago0xf90ca0671954e9bb83670d856576fa16c04f2a21  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0xf2ca1a3c87750621d3387e7a5c8a79e26d7242c02680259be01e4f31d65b5673(pending)1 min ago0xf90ca0671954e9bb83670d856576fa16c04f2a21  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0x60fbfeee9ef567b53641f675d5e6b6e2da35abd413d3eacc3330a592a1f9384a(pending)1 min ago0xf90ca0671954e9bb83670d856576fa16c04f2a21  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0xbc0e3825c7b1088a2bb3ce0b0f7e38e8d6ff40c74cc7492e37ce5b35b28daec7(pending)2 hrs 21 mins ago0x2e1d11c777853d0925aed4dba7b7f840c65e695f  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0x79e849660111820baea68709313e21fd9af5d8633bc724ffee2f7becc6ec4c2d(pending)2 hrs 21 mins ago0x2e1d11c777853d0925aed4dba7b7f840c65e695f  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0xd0f42f8e663ccfa2cb5903704b091e11a018cfa3e0c616c97f1850a7227d0f8d(pending)2 hrs 21 mins ago0x2e1d11c777853d0925aed4dba7b7f840c65e695f  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0x0fac82829bbe193fbd172622bef7a6eea5009ebcc7c3db0a08cb70c4af70c800(pending)2 hrs 44 mins ago0x2e1d11c777853d0925aed4dba7b7f840c65e695f  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0x836a7735a5b98af9e33d6ac5e12ab147f7744e4b005916f6c222b7f751319f5a(pending)2 hrs 46 mins ago0x2e1d11c777853d0925aed4dba7b7f840c65e695f  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0xe0a9fdf8a096007708071a5a402701b59a223650fed8386ae15cef6f8b2592f9(pending)3 days 16 hrs ago0x8b4266c1d5e2ed6fd5814f0708cc8d67d7171600  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0x29d31450c84171c0e520eea164a7fc7213a1bc9864ab26336d8e880d4490fabd72370752 mins ago0xd5b2ad714054400c4524531419b987b52d2d949e  IN   TokenStore0 Ether0.00029532
0xa0e045448c3a521b2522335bfd199c7c1cefe7ec3b47070fa252f9738cf8002072370743 mins ago0x24e7b906006260179707dcd32c0a7504567d8c74  IN   TokenStore0.245 Ether0.000149555
0x3ef5d71f993e15bd8c3742e308ed9f89b92d6f2871eb42e1892735f2175bec1372370743 mins ago0xd5b2ad714054400c4524531419b987b52d2d949e  IN   TokenStore0 Ether0.00029596
0x5a5222e1f0b7a0a1e638b41e0083d7116abceffdf460dd0ed69beceb6657cf2872370743 mins ago0xd5b2ad714054400c4524531419b987b52d2d949e  IN   TokenStore0 Ether0.00029532
0xcfb41365e2c45bc11b8494a20a470c6fc065add6d2c1b295d8dd1c9539ee241d72370723 mins ago0x1700105cf1fde706648dcabef3a9d76edef33151  IN   TokenStore0 Ether0.0004846
0x7148d9d49a99393a5096a515656037cbe61d63849730934c1d8c4f10f1bbdda872370723 mins ago0xd5b2ad714054400c4524531419b987b52d2d949e  IN   TokenStore0 Ether0.000189975
0x91c3c777cf70e1eb139ed4801f5cab501489e6e696ef3d23d23d66b69b305bed723704114 mins ago0x8d9e17f0931692823dc14cca6cc885d84eaa360d  IN   TokenStore0 Ether0.00029308
0xd371bae272739c6003915d6ae623ec810062a8522d90a9e322874a2819646c4e723703116 mins ago0x16ae6884ee2ec4a1bb163c10a1eb4df5d33c4916  IN   TokenStore0 Ether0.00024162
0xc8a02ef40967a5c23cd55c9c992459d6e7806f4090749ba108c082f4b784f8a9723703017 mins ago0x24e7b906006260179707dcd32c0a7504567d8c74  IN   TokenStore0 Ether0.0003018792
0xd8dc832f3224cc1f09ff91876d83137800d6e9e110d738863c9d00fd17006645723703017 mins ago0x24e7b906006260179707dcd32c0a7504567d8c74  IN   TokenStore0 Ether0.0003015528
0x9a1f3911e44692f6a5bd74c5c53e1fcf4b22df2995e0d95f049e1ad9a4561160723702917 mins ago0x2c3c8ba8ba3f983260af6077bb4930d8547560b4  IN   TokenStore0 Ether0.00038059
0xab4a4ad75d50fcd6e5bc25404170f9c80cc7b03125b49293acaad046b027eb7e723702320 mins ago0xd80d4379297a6cddb9343a9d1150afd48fdd0277  IN   TokenStore0 Ether0.00118
0x554b82f2e9af472b1305cb62a92b3bfb2753b380618afc25049461124cd0aac1723701522 mins ago0x24e7b906006260179707dcd32c0a7504567d8c74  IN   TokenStore0.8319 Ether0.0001525461
0x60ee640b1b1439295cceb6dbc4eda631432f95baf8b41b3e634fa6a087bfe7cb723701026 mins ago0x8085715abb47a0c0d418d58b8195d90c41d71375  IN   TokenStore0 Ether0.00193968
[ Download CSV Export 

Latest 25 Internal Transaction, Click here to view more Internal Transactions as a result of Contract Execution

Parent TxHash Block Age From To Value
0x7148d9d49a99393a5096a515656037cbe61d63849730934c1d8c4f10f1bbdda872370723 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xd5b2ad714054400c4524531419b987b52d2d949e0.08 Ether
0x9a1f3911e44692f6a5bd74c5c53e1fcf4b22df2995e0d95f049e1ad9a4561160723702917 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80x2c3c8ba8ba3f983260af6077bb4930d8547560b41.9482 Ether
0x2bfcbb286917b6398dc26ea88cd244ce000db49c09bf06765353d927bcc298ee723698432 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80x85c5c26dc2af5546341fc1988b9d178148b4838b0.048032023615723551 Ether
0x67ad9da580551fe8e9562c07b09e2ed23a0b1c2166475ae98e81e820f8ee012a723697337 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xe17dbb844ba602e189889d941d1297184ce636640.00248 Ether
0xf288e170bf1b704c01fcf5c6d939e7c43b97d852519b977c6dbcd2536211b049723696242 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xf946a41a7a390d5e472fe5a35ba84f041af42d395 Ether
0x6ff752ecdda136e1165c79ca1bd686d017224c09a29b4de37ed460ad559d34c372368961 hr 4 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xe17dbb844ba602e189889d941d1297184ce636640.24237818936 Ether
0x5a51d0bfbab615661c76a5398eb91994e28bed6673baf2d85359410f4213786f72367751 hr 46 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xf90ca0671954e9bb83670d856576fa16c04f2a210.5 Ether
0xa112e87c9ac15dcfcb0b62fc0df936e34a5f044b91e4f4c4f49f62b713a4e23672367062 hrs 11 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xb5c1139938601b4b4befca7bc9464b6cd359fa540.1564 Ether
0xfc689ca6345dfd75c4c81c27f5249571d01936d9d4fdef2bdfd86e5592cd276172366972 hrs 14 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.0002008 Ether
0x52cc63ee5811b69ac2296b4dac0a76ea272bcbfab080a302fd6db0c66b76544b72366882 hrs 18 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80x2fff043b0bff31fc3eaa59b5895ddc0007b885f31.5323 Ether
0xc01a5669fbf20d538321f80c85354e722ec8db4e5e88f68c9649c43d82d830bc72366592 hrs 30 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xf535dfd55ca6009ec3ba0de575b886b8f95d4c230.1 Ether
0xd79d3a4a3f753681b69d6440ffca432373136cfeb9cf5cac0bf3afd5d89de43f72366442 hrs 34 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xf535dfd55ca6009ec3ba0de575b886b8f95d4c232 Ether
0x077dc13332026bb754f32dcffbbd4b7f812cf125a566e2edff2c012f768da72872365882 hrs 54 mins ago0x85c5c26dc2af5546341fc1988b9d178148b4838b0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d840 wei
0x641a6ec3af6105dcd90c29a34180ae1fa0420ccacbac2fa04bd79f5cf3fc55c672365732 hrs 59 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.00753 Ether
0xea451d5a7586faebd5b279fccc04a4028829c6a4ce252ff43c98d11dc1954d4e72365732 hrs 59 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.00014056 Ether
0xaacfa7c3c3e9ef20fb191f836dea2db4f24e66c76c135b90c37042dc5290948d72365013 hrs 27 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xad1cefc1d7d05dc5fcc2fc1084d7f2e700b8d8933.825 Ether
0xef6611b8919e83f78f97dc11bec25c4a84a7ea8a1c5f27092d0e27ecab50625372364064 hrs 5 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.01842275744 Ether
0x6d84a649e6dc3ac16ddbdd5805e753ff17bb7a29a9085ac4db5abb8109738b9672364014 hrs 6 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80x24e7b906006260179707dcd32c0a7504567d8c740.1 Ether
0x23dfd7e058e5318bb07091baf1eedf32e1c056ab1a88fbf1ff0e4123ae5e426b72363094 hrs 37 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xe17dbb844ba602e189889d941d1297184ce636640.000007548148 Ether
0xecddd3514a38b7e9fb4a4160807eb819ad5262c055283414002d28c1a3074f1872361765 hrs 18 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80x1bdc2ddf20a4b0b292978abbe753ea1de8c666e70.45 Ether
0x27352a45a65c4cf07fe0f58602e1514480da50e89bc376d8ce475b4040f13df172361665 hrs 22 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80x4d7718a8d5eb9c3c064abf80b1c389737711f6a70.1235 Ether
0xb9dd17b593164deea671d476dd73229990602d2a6828e2b6506155f308caa7e372361295 hrs 37 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xf5b378e308e05ed5eece960bb50fc4d84a2474650.512470916 Ether
0x2b482a32677b8545f6ff16f6d82c8361af03ca7cb72e4445b92975dcf7b75ce272360086 hrs 16 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80x9455fbcfc9865763c2c144c745a520af8fa075d01.18 Ether
0x5e85525d7eedf54d7ff3fa902dbc1f1b493c9064a5c666a38927a63550338bfc72359656 hrs 30 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80x0ef57f4877a3f5ddd1292015df8d8e8dae10f36b0.32 Ether
0x76f95c374147e0d2ae221b52e57aed85167b704820a7bb771f131bc817deb97e72359436 hrs 37 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xe17dbb844ba602e189889d941d1297184ce636640.2044 Ether
[ Download CSV Export 
Contract Name: TokenStore
Compiler Version: v0.4.13+commit.fb4cb1a
Optimization Enabled: Yes
Runs (Optimizer):  200


Contract Source Code
pragma solidity ^0.4.11;

// ERC20 token protocol, see more details at
// https://theethereum.wiki/w/index.php/ERC20_Token_Standard
// And also https://github.com/ethereum/eips/issues/20

contract Token {
  function totalSupply() constant returns (uint256 supply);
  function balanceOf(address _owner) constant returns (uint256 balance);
  function transfer(address _to, uint256 _value) returns (bool success);
  function transferFrom(address _from, address _to, uint256 _value) returns (bool success);
  function approve(address _spender, uint256 _value) returns (bool success);
  function allowance(address _owner, address _spender) constant returns (uint256 remaining);

  event Transfer(address indexed _from, address indexed _to, uint256 _value);
  event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}

// Safe mathematics to make the code more readable

contract SafeMath {
  function safeMul(uint a, uint b) internal returns (uint) {
    uint c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function safeSub(uint a, uint b) internal returns (uint) {
    assert(b <= a);
    return a - b;
  }

  function safeAdd(uint a, uint b) internal returns (uint) {
    uint c = a + b;
    assert(c>=a && c>=b);
    return c;
  }
}

// Ownable interface to simplify owner checks

contract Ownable {
  address public owner;

  function Ownable() {
    owner = msg.sender;
  }

  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }

  function transferOwnership(address _newOwner) onlyOwner {
    require(_newOwner != address(0));
    owner = _newOwner;
  }
}

// Interface for trading discounts and rebates for specific accounts

contract AccountModifiersInterface {
  function accountModifiers(address _user) constant returns(uint takeFeeDiscount, uint rebatePercentage);
  function tradeModifiers(address _maker, address _taker) constant returns(uint takeFeeDiscount, uint rebatePercentage);
}

// Interface for trade tacker

contract TradeTrackerInterface {
  function tradeComplete(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive, address _get, address _give, uint _takerFee, uint _makerRebate);
}

// Exchange contract

contract TokenStore is SafeMath, Ownable {

  // The account that will receive fees
  address feeAccount;

  // The account that stores fee discounts/rebates
  address accountModifiers;
  
  // Trade tracker account
  address tradeTracker;

  // We charge only the takers and this is the fee, percentage times 1 ether
  uint public fee;

  // Mapping of token addresses to mapping of account balances (token 0 means Ether)
  mapping (address => mapping (address => uint)) public tokens;

  // Mapping of user accounts to mapping of order hashes to uints (amount of order that has been filled)
  mapping (address => mapping (bytes32 => uint)) public orderFills;
  
  // Address of a next and previous versions of the contract, also status of the contract
  // can be used for user-triggered fund migrations
  address public successor;
  address public predecessor;
  bool public deprecated;
  uint16 public version;

  // Logging events
  // Note: Order creation is handled off-chain, see explanation further below
  event Cancel(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s);
  event Trade(address tokenGet, uint amountGet, address tokenGive, uint amountGive, address get, address give, uint nonce);
  event Deposit(address token, address user, uint amount, uint balance);
  event Withdraw(address token, address user, uint amount, uint balance);
  event FundsMigrated(address user);

  function TokenStore(uint _fee, address _predecessor) {
    feeAccount = owner;
    fee = _fee;
    predecessor = _predecessor;
    deprecated = false;
    if (predecessor != address(0)) {
      version = TokenStore(predecessor).version() + 1;
    } else {
      version = 1;
    }
  }

  // Throw on default handler to prevent direct transactions of Ether
  function() {
    revert();
  }
  
  modifier deprecable() {
    require(!deprecated);
    _;
  }

  function deprecate(bool _deprecated, address _successor) onlyOwner {
    deprecated = _deprecated;
    successor = _successor;
  }

  function changeFeeAccount(address _feeAccount) onlyOwner {
    require(_feeAccount != address(0));
    feeAccount = _feeAccount;
  }

  function changeAccountModifiers(address _accountModifiers) onlyOwner {
    accountModifiers = _accountModifiers;
  }
  
  function changeTradeTracker(address _tradeTracker) onlyOwner {
    tradeTracker = _tradeTracker;
  }

  // Fee can only be decreased!
  function changeFee(uint _fee) onlyOwner {
    require(_fee <= fee);
    fee = _fee;
  }
  
  // Allows a user to get her current discount/rebate
  function getAccountModifiers() constant returns(uint takeFeeDiscount, uint rebatePercentage) {
    if (accountModifiers != address(0)) {
      return AccountModifiersInterface(accountModifiers).accountModifiers(msg.sender);
    } else {
      return (0, 0);
    }
  }
  
  ////////////////////////////////////////////////////////////////////////////////
  // Deposits, withdrawals, balances
  ////////////////////////////////////////////////////////////////////////////////

  function deposit() payable deprecable {
    tokens[0][msg.sender] = safeAdd(tokens[0][msg.sender], msg.value);
    Deposit(0, msg.sender, msg.value, tokens[0][msg.sender]);
  }

  function withdraw(uint _amount) {
    require(tokens[0][msg.sender] >= _amount);
    tokens[0][msg.sender] = safeSub(tokens[0][msg.sender], _amount);
    if (!msg.sender.call.value(_amount)()) {
      revert();
    }
    Withdraw(0, msg.sender, _amount, tokens[0][msg.sender]);
  }

  function depositToken(address _token, uint _amount) deprecable {
    // Note that Token(_token).approve(this, _amount) needs to be called
    // first or this contract will not be able to do the transfer.
    require(_token != 0);
    if (!Token(_token).transferFrom(msg.sender, this, _amount)) {
      revert();
    }
    tokens[_token][msg.sender] = safeAdd(tokens[_token][msg.sender], _amount);
    Deposit(_token, msg.sender, _amount, tokens[_token][msg.sender]);
  }

  function withdrawToken(address _token, uint _amount) {
    require(_token != 0);
    require(tokens[_token][msg.sender] >= _amount);
    tokens[_token][msg.sender] = safeSub(tokens[_token][msg.sender], _amount);
    if (!Token(_token).transfer(msg.sender, _amount)) {
      revert();
    }
    Withdraw(_token, msg.sender, _amount, tokens[_token][msg.sender]);
  }

  function balanceOf(address _token, address _user) constant returns (uint) {
    return tokens[_token][_user];
  }
  
  ////////////////////////////////////////////////////////////////////////////////
  // Trading
  ////////////////////////////////////////////////////////////////////////////////

  // Note: Order creation happens off-chain but the orders are signed by creators,
  // we validate the contents and the creator address in the logic below

  function trade(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive,
      uint _expires, uint _nonce, address _user, uint8 _v, bytes32 _r, bytes32 _s, uint _amount) {
    bytes32 hash = sha256(this, _tokenGet, _amountGet, _tokenGive, _amountGive, _expires, _nonce);
    // Check order signatures and expiration, also check if not fulfilled yet
		if (ecrecover(sha3("\x19Ethereum Signed Message:\n32", hash), _v, _r, _s) != _user ||
      block.number > _expires ||
      safeAdd(orderFills[_user][hash], _amount) > _amountGet) {
      revert();
    }
    tradeBalances(_tokenGet, _amountGet, _tokenGive, _amountGive, _user, msg.sender, _amount);
    orderFills[_user][hash] = safeAdd(orderFills[_user][hash], _amount);
    Trade(_tokenGet, _amount, _tokenGive, _amountGive * _amount / _amountGet, _user, msg.sender, _nonce);
  }
  
  function tradeBalances(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive,
      address _user, address _caller, uint _amount) private {

    uint feeTakeValue = safeMul(_amount, fee) / (1 ether);
    uint rebateValue = 0;
    uint tokenGiveValue = safeMul(_amountGive, _amount) / _amountGet; // Proportionate to request ratio

    // Apply modifiers
    if (accountModifiers != address(0)) {
      var (feeTakeDiscount, rebatePercentage) = AccountModifiersInterface(accountModifiers).tradeModifiers(_user, _caller);
      // Check that the discounts/rebates are never higher then 100%
      if (feeTakeDiscount > 100) {
        feeTakeDiscount = 0;
      }
      if (rebatePercentage > 100) {
        rebatePercentage = 0;
      }
      feeTakeValue = safeMul(feeTakeValue, 100 - feeTakeDiscount) / 100;  // discounted fee
      rebateValue = safeMul(rebatePercentage, feeTakeValue) / 100;        // % of actual taker fee
    }
    
    tokens[_tokenGet][_user] = safeAdd(tokens[_tokenGet][_user], safeAdd(_amount, rebateValue));
    tokens[_tokenGet][_caller] = safeSub(tokens[_tokenGet][_caller], safeAdd(_amount, feeTakeValue));
    tokens[_tokenGive][_user] = safeSub(tokens[_tokenGive][_user], tokenGiveValue);
    tokens[_tokenGive][_caller] = safeAdd(tokens[_tokenGive][_caller], tokenGiveValue);
    tokens[_tokenGet][feeAccount] = safeAdd(tokens[_tokenGet][feeAccount], safeSub(feeTakeValue, rebateValue));
    
    if (tradeTracker != address(0)) {
      TradeTrackerInterface(tradeTracker).tradeComplete(_tokenGet, _amount, _tokenGive, tokenGiveValue, _user, _caller, feeTakeValue, rebateValue);
    }
  }

  function testTrade(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive, uint _expires,
      uint _nonce, address _user, uint8 _v, bytes32 _r, bytes32 _s, uint _amount, address _sender) constant returns(bool) {
    if (tokens[_tokenGet][_sender] < _amount ||
      availableVolume(_tokenGet, _amountGet, _tokenGive, _amountGive, _expires, _nonce, _user, _v, _r, _s) < _amount) {
      return false;
    }
    return true;
  }

  function availableVolume(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive, uint _expires,
      uint _nonce, address _user, uint8 _v, bytes32 _r, bytes32 _s) constant returns(uint) {
    bytes32 hash = sha256(this, _tokenGet, _amountGet, _tokenGive, _amountGive, _expires, _nonce);
    if (ecrecover(sha3("\x19Ethereum Signed Message:\n32", hash), _v, _r, _s) != _user ||
      block.number > _expires) {
      return 0;
    }
    uint available1 = safeSub(_amountGet, orderFills[_user][hash]);
    uint available2 = safeMul(tokens[_tokenGive][_user], _amountGet) / _amountGive;
    if (available1 < available2) return available1;
    return available2;
  }

  function amountFilled(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive, uint _expires,
      uint _nonce, address _user) constant returns(uint) {
    bytes32 hash = sha256(this, _tokenGet, _amountGet, _tokenGive, _amountGive, _expires, _nonce);
    return orderFills[_user][hash];
  }

  function cancelOrder(address _tokenGet, uint _amountGet, address _tokenGive, uint _amountGive, uint _expires,
      uint _nonce, uint8 _v, bytes32 _r, bytes32 _s) {
    bytes32 hash = sha256(this, _tokenGet, _amountGet, _tokenGive, _amountGive, _expires, _nonce);
    if (!(ecrecover(sha3("\x19Ethereum Signed Message:\n32", hash), _v, _r, _s) == msg.sender)) {
      revert();
    }
    orderFills[msg.sender][hash] = _amountGet;
    Cancel(_tokenGet, _amountGet, _tokenGive, _amountGive, _expires, _nonce, msg.sender, _v, _r, _s);
  }
  
  ////////////////////////////////////////////////////////////////////////////////
  // Migrations
  ////////////////////////////////////////////////////////////////////////////////

  // User-triggered (!) fund migrations in case contract got updated
  // Similar to withdraw but we use a successor account instead
  // As we don't store user tokens list on chain, it has to be passed from the outside
  function migrateFunds(address[] _tokens) {
  
    // Get the latest successor in the chain
    require(successor != address(0));
    TokenStore newExchange = TokenStore(successor);
    for (uint16 n = 0; n < 20; n++) {  // We will look past 20 contracts in the future
      address nextSuccessor = newExchange.successor();
      if (nextSuccessor == address(this)) {  // Circular succession
        revert();
      }
      if (nextSuccessor == address(0)) { // We reached the newest, stop
        break;
      }
      newExchange = TokenStore(nextSuccessor);
    }

    // Ether
    uint etherAmount = tokens[0][msg.sender];
    if (etherAmount > 0) {
      tokens[0][msg.sender] = 0;
      newExchange.depositForUser.value(etherAmount)(msg.sender);
    }

    // Tokens
    for (n = 0; n < _tokens.length; n++) {
      address token = _tokens[n];
      require(token != address(0)); // 0 = Ether, we handle it above
      uint tokenAmount = tokens[token][msg.sender];
      if (tokenAmount == 0) {
        continue;
      }
      if (!Token(token).approve(newExchange, tokenAmount)) {
        revert();
      }
      tokens[token][msg.sender] = 0;
      newExchange.depositTokenForUser(token, tokenAmount, msg.sender);
    }

    FundsMigrated(msg.sender);
  }

  // This is used for migrations only. To be called by previous exchange only,
  // user-triggered, on behalf of the user called the migrateFunds method.
  // Note that it does exactly the same as depositToken, but as this is called
  // by a previous generation of exchange itself, we credit internally not the
  // previous exchange, but the user it was called for.
  function depositForUser(address _user) payable deprecable {
    require(_user != address(0));
    require(msg.value > 0);
    TokenStore caller = TokenStore(msg.sender);
    require(caller.version() > 0); // Make sure it's an exchange account
    tokens[0][_user] = safeAdd(tokens[0][_user], msg.value);
  }

  function depositTokenForUser(address _token, uint _amount, address _user) deprecable {
    require(_token != address(0));
    require(_user != address(0));
    require(_amount > 0);
    TokenStore caller = TokenStore(msg.sender);
    require(caller.version() > 0); // Make sure it's an exchange account
    if (!Token(_token).transferFrom(msg.sender, this, _amount)) {
      revert();
    }
    tokens[_token][_user] = safeAdd(tokens[_token][_user], _amount);
  }
}

Contract ABI
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hip","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_token","type":"address"},{"name":"_user","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_tokenGet","type":"address"},{"name":"_amountGet","type":"uint256"},{"name":"_tokenGive","type":"address"},{"name":"_amountGive","type":"uint256"},{"name":"_expires","type":"uint256"},{"name":"_nonce","type":"uint256"},{"name":"_user","type":"address"},{"name":"_v","type":"uint8"},{"name":"_r","type":"bytes32"},{"name":"_s","type":"bytes32"}],"name":"availableVolume","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"_fee","type":"uint256"},{"name":"_predecessor","type":"address"}],"payable":false,"type":"constructor"},{"payable":false,"type":"fallback"},{"anonymous":false,"inputs":[{"indexed":false,"name":"tokenGet","type":"address"},{"indexed":false,"name":"amountGet","type":"uint256"},{"indexed":false,"name":"tokenGive","type":"address"},{"indexed":false,"name":"amountGive","type":"uint256"},{"indexed":false,"name":"expires","type":"uint256"},{"indexed":false,"name":"nonce","type":"uint256"},{"indexed":false,"name":"user","type":"address"},{"indexed":false,"name":"v","type":"uint8"},{"indexed":false,"name":"r","type":"bytes32"},{"indexed":false,"name":"s","type":"bytes32"}],"name":"Cancel","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"tokenGet","type":"address"},{"indexed":false,"name":"amountGet","type":"uint256"},{"indexed":false,"name":"tokenGive","type":"address"},{"indexed":false,"name":"amountGive","type":"uint256"},{"indexed":false,"name":"get","type":"address"},{"indexed":false,"name":"give","type":"address"},{"indexed":false,"name":"nonce","type":"uint256"}],"name":"Trade","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"token","type":"address"},{"indexed":false,"name":"user","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"balance","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"token","type":"address"},{"indexed":false,"name":"user","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"balance","type":"uint256"}],"name":"Withdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"user","type":"address"}],"name":"FundsMigrated","type":"event"}]

Contract Creation Code
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    Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000aa87bee5380000000000000000000000000000000000000000000000000000000000000000000

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000000000000000000000000000000aa87bee538000
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000000


   Swarm Source:
bzzr://77f218d396cd040a425e3dc0d8a1d2b99db2d2b265a225a4134ec6bed3adc381
Block Age transaction Difficulty GasUsed Reward
Block Age Uncle Number Difficulty GasUsed Reward
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