Contract Overview |  TokenStore
Balance: 957.612049599770536946 Ether
Ether Value: $166,011.62 (@ $173.36/ETH)
Transactions: 428220 txns
Misc:
Address Watch: Add To Watch List
Contract Creator: 0x44a93f553bd529c19386b2ddfa30f458b0bc3b20at txn 0x386439acefbf00018b318f283a9ebc6185c483ff6738117243dba40fc1b42bb6
Token Balance:
 Latest 25 transactions from a total of 428220 transactions
(+12 PendingTxns)

TxHash Age From To Value [TxFee]
0xbc076bbc9b45d6242ef6d603820b971e323b5f09422aac3b6cc1108f74788af5(pending)0x4d4d424ec499099328e09b25a1f38359de65a35d  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.2 Ether(Pending)
0x19e56cb2683c624fc0c8ba85c2bf2ebd393163cbc54fb452441129c23c6ca3da(pending)0xb56ac159b76b4d3fd58dc4b4a277f84dfc1ed932  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0x547cb626c7555f140799c026a871570684456613a6078c46259160751b9643e2(pending)0x5d869389b6a68e988d0f8f4570d7a35648140872  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0x5edc1eb1907a1e387e3f779fadd8941538f6820ba4249c30efd21a01fa905eb3(pending)0xd896993514b03648bbfbb8b450d8d570b097ba45  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0x5ec7102a6c5e413add8cb8ba918892eda3560e22c90bbb7e0d1f4ce9174cab10(pending)0xad8771ab5c02c5e7bee612d67aad5f938120e1d5  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0x34ee123878da14a35ba31807e729a08edb453cf2e163122f3fee857d024f9e0b(pending)0x996397e5698f3a4cc12ab0890076d059c9b4f484  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.05 Ether(Pending)
0x9c1aff69566dfc6703e35fe1886e926ff18a8e963abb348589e8e1d053dd18c2(pending)0x996397e5698f3a4cc12ab0890076d059c9b4f484  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.03 Ether(Pending)
0x2e9d9a384e59e1ce025abb914a5696b331703a07cff422a0056316aefe3b57d4(pending)0x996397e5698f3a4cc12ab0890076d059c9b4f484  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.05 Ether(Pending)
0x775f1801b7efd62fe9b2ef2216b9161a898a1ab4164c51410672cc0b6e041932(pending)0x29c5baf96cb98bd332cf2e35eafc3f5624dda174  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0x3e2c1f9e4f71ce2cc27cf0cd02a492d6f6f6cdaa5b154bf732a07f786e524b5c(pending)0x188de4b8f15e0d1f05cbbb0d9f1cc1e683c37711  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0x20e7ff6e826885896f5384b5a934e5ca24f074aa8f491ad2437068eb1311716c(pending)0xa6eb8bb92af1ba6fbd5637a8213f55897995fbd0  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0xca7cf4ce03c7d9f8de77875103457190c081e660a2b7a290b9a04371cbb32944(pending)0x7380431571442b34737d639756a8eae36137d132  IN  0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80 Ether(Pending)
0xc4e9b6b88d71684c6a11da854ed2363d586bfd7459815bef3e413f5836022f5e1 min ago0x666a9061a82932de58fa2fd70b083adcaafdd6f1  IN   TokenStore1 Ether0.0006377362
0x2fde74db0ddc7a719d316e34ead37ca7d678bf2b0148ec4df18cdc7c9aee931c2 mins ago0xdbdbd1d98252f0b1745b75502eb3beca090231f5  IN   TokenStore0.07 Ether0.000418754
0xfd48d4c57bfcb9e3d4e480df39d32f9bfc94b1312c27ba77f427305ae9dcb50d4 mins ago0x4d4d424ec499099328e09b25a1f38359de65a35d  IN   TokenStore0 Ether0.0001887104
0x4d522035f9e2ca79c11e9b4179738f5577c9dd4ef4e8b1e101d5084b172ba7b75 mins ago0x15eaf422efa11c9058a30b3a3228049ab4a5ca95  IN   TokenStore0 Ether0.0001132336
0xddc4f06a18a825516f2f21c936ede200cd935f78394df3e316a3efa87cfd7f175 mins ago0x563fb65d4b4c81a19d84f0d5012502ef56761264  IN   TokenStore0 Ether0.000416152
0x8ed5a641bf05d620529b6cd1ac5efd7df05a7707d4e2d57e8c52a1592b4ea85c5 mins ago0x6282ac8c581c2420377d30718407762d086dc0f7  IN   TokenStore0 Ether0.000514185
0x8e373e3855fe93214830f85b822150f6ec38d05953a2ebd229cc87007e5b15c36 mins ago0xb56ac159b76b4d3fd58dc4b4a277f84dfc1ed932  IN   TokenStore0 Ether0.000491904
0x0812fb80d27c9e284285055726ad51598585d0d816c9e2cff105397ed5c4ea607 mins ago0x09cfaf9cfe55524ba854ddc7501924d5bf4f9566  IN   TokenStore0 Ether0.0001025865
0x33219040f1ea61f2a61efd2bf815b2c6edf68bba41474f53677d8a0219f532129 mins ago0xb56ac159b76b4d3fd58dc4b4a277f84dfc1ed932  IN   TokenStore0 Ether0.000581904
0x9ba933890289c4c48dad1d58bea8893b70a4bb9519115342f778417a0418354f14 mins ago0xb56ac159b76b4d3fd58dc4b4a277f84dfc1ed932  IN   TokenStore0 Ether0.00020384
0xc6375a0c526231b184887ff359a28f5d9dafa74da2b04c221dc3211a69108db114 mins ago0x99634a6c1a1e3ecbcb7a5a303259f0d793ab9f1d  IN   TokenStore0 Ether0.0007552
0xb89ee3a860c13f9485aeec94d4edb2f88bfdd51774e6ff242dfb8eec428856c616 mins ago0xc5fe255146f81b50b827dc6e870a97af624918eb  IN   TokenStore0 Ether0.000134964
0xd41717c3cdecb4450da7da6d1207d98c18c36bb8c308cf57a1ccbba6eb214ddc16 mins ago0xfddac25e761e96aed1f65ea9f0dd9aeed3d3e7d5  IN   TokenStore0 Ether0.0000873885
[ Download CSV Export  ] 
 Internal Transactions as a result of Contract Execution
 Latest 25 Internal Txns, Click here To View More View All
ParentTxHash Block Age From To Value
0xc49cab8cc080555b19d1a417e6af44702845fe4972b3a2b32ec5c8c5559a598467191984 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.0284132 Ether
0x0812fb80d27c9e284285055726ad51598585d0d816c9e2cff105397ed5c4ea6067191857 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80x09cfaf9cfe55524ba854ddc7501924d5bf4f95660.00099 Ether
0xd41717c3cdecb4450da7da6d1207d98c18c36bb8c308cf57a1ccbba6eb214ddc671914916 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xfddac25e761e96aed1f65ea9f0dd9aeed3d3e7d50.00425 Ether
0x46151599438b2554389495f16d978d5dd32161ab6a7a537bbc6c2fa6c42e6597671912124 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80x85c5c26dc2af5546341fc1988b9d178148b4838b0.08792658 Ether
0x46151599438b2554389495f16d978d5dd32161ab6a7a537bbc6c2fa6c42e6597671912124 mins ago0x85c5c26dc2af5546341fc1988b9d178148b4838b0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.0842604 Ether
0x17205012754f4779c230d4c8f20456ca35c57503a08c2b6d002d506fe26929ae671910327 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xbc99331d15da2b8b4f9a3011cff339bd56af495d0.00264 Ether
0x7b7412dffe525f99ef3268263b40fa70ea75d30bc5bb4aca10ab6b54889e8ee7671909630 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80x0f7d6e28b249cde4e6a8aaf061a20e4aa5f2dcf90.00023 Ether
0xee0ec2d5958f907568c1d667a68e9a713239dc19a5bd035e4463cfdf5075d926671907736 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xf755ff1824172f80e9b700bdd1337cf3989c7b5b1.511 Ether
0xcd380da4fcd57adc40e9666ae5e6c51f82ac43f867c5efb097e6f6d7eb5c3955671907037 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xbc99331d15da2b8b4f9a3011cff339bd56af495d0.463 Ether
0xc164f4a36dcaf154c1d53ec349ec1375130715b3775eefd9f56ca74e266aaf76671905342 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80x024dcc33a1fd75ce2ee5267478b738f82153c45d12.087 Ether
0x60befdeb5bd8172e27db19a71cbc5dec19dc40c3caea36e9fb0a192bfcceb503671900552 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.01805192 Ether
0xe9d92c1fe16d8549e4ba076cd28ad30dc3ecea54b7fc789eb28829a1d3ead5a3671900552 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.2178677992 Ether
0x15b3cb71032f44b767a582bdf9dd370ab7e8536dafb99594cdde2a55fc3e5c77671898157 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.2178677992 Ether
0xc60a35f71e6418f2c162251fc158e651c14bd704633a1eeb15935f8da04ff3b367188041 hr 37 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xc5365e848c84ebce4631cc91bbd024d6288fbd500.0251 Ether
0x5ee2e9fd7d16f1bacc2421ce26f04cabb2761288950a752963427c386ed7659567187551 hr 47 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xa0f6bdf51db43594a3ac282fad774f3282a9b2390.177 Ether
0x2c4c0cb42854c137770fd3d2294ec9abd91b8112448f1d1fa4cba00cbc42e1c367187371 hr 50 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xdbdbd1d98252f0b1745b75502eb3beca090231f50.072 Ether
0xa6ea8dfe6b1d73ff1367862e1a7129973edb1fc6e31ac7c0094631cd742b964567186941 hr 59 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xfddac25e761e96aed1f65ea9f0dd9aeed3d3e7d50.00689 Ether
0xa48c98ec7822dca0a466a85ace17906cc2aaf6293f1badb49631f57ed0dd1b3367186632 hrs 9 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.4267 Ether
0x1a365c44c1253fa47555d9bef6ccc8ba24fc380f739f74df5276660877fab86067186582 hrs 10 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.4267 Ether
0xe61d1f9b11582b27bfd70f42209f251b3989fb2837ecd60af132541ece56043567186552 hrs 10 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.4267 Ether
0x419ca104494e9994a03f24979dedb1294259d857edaa8919ca8731ada160faeb67186032 hrs 21 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80x89a565bf632313c3ca0fff81bef65e0789c934820.02 Ether
0x7cfd7e3c7631f34b06f7bbd42e2a04b2b4d56aaf70bd4bed640df3bcbf3ff99f67185872 hrs 25 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.00871472 Ether
0xc860366f93cbcf97ba52a8ee1e2deb4726a23af84dadcf4841ce013d781f67e067184872 hrs 51 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.02508996 Ether
0x2ab724e984f2bde10b75bbf3275b97af6bfeede2627bbbe9f01ec6f0a97f23b967184842 hrs 52 mins ago0xe17dbb844ba602e189889d941d1297184ce636640x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80.0299192 Ether
0x0ab0b90ba112ebc1323337e10432ca242dbe8ca2750a3e9c4e2abf081de7d4ae67184762 hrs 53 mins ago0x1ce7ae555139c5ef5a57cc8d814a867ee6ee33d80xc056b715d2c86687d4d3cea3e5bce8b0cdfd96d40.065 Ether
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Contract Name: TokenStore
Compiler Text: v0.4.13+commit.fb4cb1a
Optimization Enabled: Yes
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

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 Switch To Opcodes View
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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

 

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