Contract 0x12459c951127e0c374ff9105dda097662a027093

 

0x Protocol's v1 exchange contract. You can learn more about the exchange contract here.

Contract Overview

0x_Exchange1
Balance:
0 Ether

EtherValue:
$0
TxHash Block Age From To Value [TxFee]
0x7190450a408fbde9bda0609c8d882a5ab86e305e0d7f5320304ff0816177432172268663 hrs 49 mins ago0x5d0fc7b893381b928dbe7ac7cbffab74cc7bf241  IN   0x_Exchange10 Ether0.0004460475
0xed0e2935d1d168facfdeaf25814d03c375cdc06550a1383ba9fdcbb9aba101a872263356 hrs 51 mins ago0x925f92341138597e7ff70671e80b27748fd39eff  IN   0x_Exchange10 Ether0.00044376
0x43d671f68d860c8f0b14079e8440b82b2e18e6ec158cefab73152fa85f91105e72263296 hrs 52 mins ago0x5d6d177d0e915d68c11115d07dc8e2047427f5d3  IN   0x_Exchange10 Ether0.0004662168
0x22db9b2371990462b6441a967ae9880559b4ec2d098f168dae774308916b097f72263206 hrs 55 mins ago0x5d6d177d0e915d68c11115d07dc8e2047427f5d3  IN   0x_Exchange10 Ether0.0004026792
0x262a538653df3516670c590d8f25f0933dc9ac708ec199220daeaa6f5910746072263186 hrs 56 mins ago0x925f92341138597e7ff70671e80b27748fd39eff  IN   0x_Exchange10 Ether0.00055433
0x2879d096bddb30a32b9450ac8321336dd7813941f6bb5ccd56228def82e3ef6b72259938 hrs 43 mins ago0x5d6d177d0e915d68c11115d07dc8e2047427f5d3  IN   0x_Exchange10 Ether0.00096004
0x421c176b81de0a2adee352b46df0725d42e047252faf24d27d33443827a2cf2272259878 hrs 44 mins ago0x5d6d177d0e915d68c11115d07dc8e2047427f5d3  IN   0x_Exchange10 Ether0.00110994
0xc1ebbbec7b20e4aa34e619eb76ee67983ed7db1afec54cb02653eb8d09581f3572259798 hrs 46 mins ago0x8fcfde54d8b25c15f925ea7385fc07bdaa3f1aef  IN   0x_Exchange10 Ether0.00111004
0xce2112524af86b74b0321c0dabff08c5f90ba64672ad4964a9127afbcfa3e51172259628 hrs 52 mins ago0x5d6d177d0e915d68c11115d07dc8e2047427f5d3  IN   0x_Exchange10 Ether0.00095812
0x7ef5d527103d182af6254c80f129ebea46f1dde14147855659184a7abfda97b772259578 hrs 53 mins ago0x5d6d177d0e915d68c11115d07dc8e2047427f5d3  IN   0x_Exchange10 Ether0.00110802
0x802b53ba94b5f952bcded8f08f49b21cf23a823b5bfc7d9ff1c41b3e233465e7722387120 hrs 57 mins ago0x8506ab208567ca5ce1080304c5a99a117477d08e  IN   0x_Exchange10 Ether0.00190696
0xf6f0ea45876df2f4927713a53a0444c5e752e7203c8b3fa0387bea1f16199a33722386820 hrs 58 mins ago0x8506ab208567ca5ce1080304c5a99a117477d08e  IN   0x_Exchange10 Ether0.00190204
0xa6a0b035d4a3f5876788daceec495fb27a60d6805fd98a48e45912a3bbe53b51722385221 hrs 3 mins ago0x8506ab208567ca5ce1080304c5a99a117477d08e  IN   0x_Exchange10 Ether0.001521472
0x64d4816596620ed70462379137bf6c40f37ba566ae02b20b2ad9d75e54543ad2722372921 hrs 50 mins ago0xef0cc655ab4a1f284524c1ebf25e605324486994  IN   0x_Exchange10 Ether0.00124676
0x7027c9c29279ae12b19662b30371caa93ea8104661e055383ac77fd37825d13a722363022 hrs 22 mins ago0x0e24aca498c9cb291f9d02f49cf7199705c98cf2  IN   0x_Exchange10 Ether0.00109782
0x0f4b07a689983716ea429615cd4c192d660e13a76bcb69b96ff09e8bfd79d801722348123 hrs 7 mins ago0x5c9dad7d15a48e7cd33eef0dad1aa45ba7a250a5  IN   0x_Exchange10 Ether0.0002966492
0x0b8736f4f83006610c90892a353238abfc48a9db52f2b0757bb759378cd28fe0722348123 hrs 7 mins ago0x5c9dad7d15a48e7cd33eef0dad1aa45ba7a250a5  IN   0x_Exchange10 Ether0.00062618
0x3c481fd26d341b228ed4d67e60beacbbc13a8a2583f3b7050a4cb8a57b45856a72229401 day 2 hrs ago0x0e24aca498c9cb291f9d02f49cf7199705c98cf2  IN   0x_Exchange10 Ether0.00131892
0x7deeda09bae4df40d13b1463d32d0ad0f508166445c82c6f9275a2d24822863872229391 day 2 hrs ago0x0e24aca498c9cb291f9d02f49cf7199705c98cf2  IN   0x_Exchange10 Ether0.00131892
0xe23de1feb342a4c90f16dae5e65ce5155b46ca37a216c30699b89e4e541f06de72228291 day 2 hrs ago0x1ba65714aa7c6b57dbdf5978655afd430fdaa1b6  IN   0x_Exchange10 Ether0.0010894417
0x9a341bd2a77a77879fa4e84a32e38bb2096b932af8b3738a680d4cc4b663ede872228291 day 2 hrs ago0x1ba65714aa7c6b57dbdf5978655afd430fdaa1b6  IN   0x_Exchange10 Ether0.000357222
0x6470df214a185e9427a1e912b50a9989971b6ccaf74652f1a0e876c400ca6f0072227081 day 3 hrs ago0x925f92341138597e7ff70671e80b27748fd39eff  IN   0x_Exchange10 Ether0.001332048
0xf3b32cc100198027135be9cec0ccbd4e0816c0b5e2a5f28ca06aa3487eb7841372226931 day 3 hrs ago0x5d6d177d0e915d68c11115d07dc8e2047427f5d3  IN   0x_Exchange10 Ether0.001152048
0x22a17b085bca406847df55a5e3a1040c909cbfe0780f439a95c52f3cf8d6dcf372226871 day 3 hrs ago0x925f92341138597e7ff70671e80b27748fd39eff  IN   0x_Exchange10 Ether0.001331928
0x7fab101ff241f87eb479bf102a034bfa94cdc83e547af6cb94a02e77359bb5da72226741 day 3 hrs ago0x5d6d177d0e915d68c11115d07dc8e2047427f5d3  IN   0x_Exchange10 Ether0.001330512
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Internal Transactions as a result of Contract Execution

Parent TxHash Block Age From To Value
Warning: The compiled contract might be susceptible to ExpExponentCleanup (medium/high-severity), NestedArrayFunctionCallDecoder (medium-severity), ZeroFunctionSelector (very low-severity), DelegateCallReturnValue (low-severity) Solidity Compiler Bugs.

Contract Source Code Verified (Exact Match)
Contract Name: Exchange
Compiler Version: v0.4.14+commit.c2215d46
Optimization Enabled: No
Runs (Optimizer):  200


Contract Source Code
/*

  Copyright 2017 ZeroEx Intl.

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

*/

pragma solidity 0.4.14;

/*
 * Ownable
 *
 * Base contract with an owner.
 * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner.
 */
contract Ownable {
    address public owner;

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

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

    function transferOwnership(address newOwner) onlyOwner {
        if (newOwner != address(0)) {
            owner = newOwner;
        }
    }
}

contract Token {

    /// @return total amount of tokens
    function totalSupply() constant returns (uint supply) {}

    /// @param _owner The address from which the balance will be retrieved
    /// @return The balance
    function balanceOf(address _owner) constant returns (uint balance) {}

    /// @notice send `_value` token to `_to` from `msg.sender`
    /// @param _to The address of the recipient
    /// @param _value The amount of token to be transferred
    /// @return Whether the transfer was successful or not
    function transfer(address _to, uint _value) returns (bool success) {}

    /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
    /// @param _from The address of the sender
    /// @param _to The address of the recipient
    /// @param _value The amount of token to be transferred
    /// @return Whether the transfer was successful or not
    function transferFrom(address _from, address _to, uint _value) returns (bool success) {}

    /// @notice `msg.sender` approves `_addr` to spend `_value` tokens
    /// @param _spender The address of the account able to transfer the tokens
    /// @param _value The amount of wei to be approved for transfer
    /// @return Whether the approval was successful or not
    function approve(address _spender, uint _value) returns (bool success) {}

    /// @param _owner The address of the account owning tokens
    /// @param _spender The address of the account able to transfer the tokens
    /// @return Amount of remaining tokens allowed to spent
    function allowance(address _owner, address _spender) constant returns (uint remaining) {}

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

/// @title TokenTransferProxy - Transfers tokens on behalf of contracts that have been approved via decentralized governance.
/// @author Amir Bandeali - <[email protected]>, Will Warren - <[email protected]>
contract TokenTransferProxy is Ownable {

    /// @dev Only authorized addresses can invoke functions with this modifier.
    modifier onlyAuthorized {
        require(authorized[msg.sender]);
        _;
    }

    modifier targetAuthorized(address target) {
        require(authorized[target]);
        _;
    }

    modifier targetNotAuthorized(address target) {
        require(!authorized[target]);
        _;
    }

    mapping (address => bool) public authorized;
    address[] public authorities;

    event LogAuthorizedAddressAdded(address indexed target, address indexed caller);
    event LogAuthorizedAddressRemoved(address indexed target, address indexed caller);

    /*
     * Public functions
     */

    /// @dev Authorizes an address.
    /// @param target Address to authorize.
    function addAuthorizedAddress(address target)
        public
        onlyOwner
        targetNotAuthorized(target)
    {
        authorized[target] = true;
        authorities.push(target);
        LogAuthorizedAddressAdded(target, msg.sender);
    }

    /// @dev Removes authorizion of an address.
    /// @param target Address to remove authorization from.
    function removeAuthorizedAddress(address target)
        public
        onlyOwner
        targetAuthorized(target)
    {
        delete authorized[target];
        for (uint i = 0; i < authorities.length; i++) {
            if (authorities[i] == target) {
                authorities[i] = authorities[authorities.length - 1];
                authorities.length -= 1;
                break;
            }
        }
        LogAuthorizedAddressRemoved(target, msg.sender);
    }

    /// @dev Calls into ERC20 Token contract, invoking transferFrom.
    /// @param token Address of token to transfer.
    /// @param from Address to transfer token from.
    /// @param to Address to transfer token to.
    /// @param value Amount of token to transfer.
    /// @return Success of transfer.
    function transferFrom(
        address token,
        address from,
        address to,
        uint value)
        public
        onlyAuthorized
        returns (bool)
    {
        return Token(token).transferFrom(from, to, value);
    }

    /*
     * Public constant functions
     */

    /// @dev Gets all authorized addresses.
    /// @return Array of authorized addresses.
    function getAuthorizedAddresses()
        public
        constant
        returns (address[])
    {
        return authorities;
    }
}

contract SafeMath {
    function safeMul(uint a, uint b) internal constant returns (uint256) {
        uint c = a * b;
        assert(a == 0 || c / a == b);
        return c;
    }

    function safeDiv(uint a, uint b) internal constant returns (uint256) {
        uint c = a / b;
        return c;
    }

    function safeSub(uint a, uint b) internal constant returns (uint256) {
        assert(b <= a);
        return a - b;
    }

    function safeAdd(uint a, uint b) internal constant returns (uint256) {
        uint c = a + b;
        assert(c >= a);
        return c;
    }

    function max64(uint64 a, uint64 b) internal constant returns (uint64) {
        return a >= b ? a : b;
    }

    function min64(uint64 a, uint64 b) internal constant returns (uint64) {
        return a < b ? a : b;
    }

    function max256(uint256 a, uint256 b) internal constant returns (uint256) {
        return a >= b ? a : b;
    }

    function min256(uint256 a, uint256 b) internal constant returns (uint256) {
        return a < b ? a : b;
    }
}

/// @title Exchange - Facilitates exchange of ERC20 tokens.
/// @author Amir Bandeali - <[email protected]>, Will Warren - <[email protected]>
contract Exchange is SafeMath {

    // Error Codes
    enum Errors {
        ORDER_EXPIRED,                    // Order has already expired
        ORDER_FULLY_FILLED_OR_CANCELLED,  // Order has already been fully filled or cancelled
        ROUNDING_ERROR_TOO_LARGE,         // Rounding error too large
        INSUFFICIENT_BALANCE_OR_ALLOWANCE // Insufficient balance or allowance for token transfer
    }

    string constant public VERSION = "1.0.0";
    uint16 constant public EXTERNAL_QUERY_GAS_LIMIT = 4999;    // Changes to state require at least 5000 gas

    address public ZRX_TOKEN_CONTRACT;
    address public TOKEN_TRANSFER_PROXY_CONTRACT;

    // Mappings of orderHash => amounts of takerTokenAmount filled or cancelled.
    mapping (bytes32 => uint) public filled;
    mapping (bytes32 => uint) public cancelled;

    event LogFill(
        address indexed maker,
        address taker,
        address indexed feeRecipient,
        address makerToken,
        address takerToken,
        uint filledMakerTokenAmount,
        uint filledTakerTokenAmount,
        uint paidMakerFee,
        uint paidTakerFee,
        bytes32 indexed tokens, // keccak256(makerToken, takerToken), allows subscribing to a token pair
        bytes32 orderHash
    );

    event LogCancel(
        address indexed maker,
        address indexed feeRecipient,
        address makerToken,
        address takerToken,
        uint cancelledMakerTokenAmount,
        uint cancelledTakerTokenAmount,
        bytes32 indexed tokens,
        bytes32 orderHash
    );

    event LogError(uint8 indexed errorId, bytes32 indexed orderHash);

    struct Order {
        address maker;
        address taker;
        address makerToken;
        address takerToken;
        address feeRecipient;
        uint makerTokenAmount;
        uint takerTokenAmount;
        uint makerFee;
        uint takerFee;
        uint expirationTimestampInSec;
        bytes32 orderHash;
    }

    function Exchange(address _zrxToken, address _tokenTransferProxy) {
        ZRX_TOKEN_CONTRACT = _zrxToken;
        TOKEN_TRANSFER_PROXY_CONTRACT = _tokenTransferProxy;
    }

    /*
    * Core exchange functions
    */

    /// @dev Fills the input order.
    /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient.
    /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt.
    /// @param fillTakerTokenAmount Desired amount of takerToken to fill.
    /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfer will fail before attempting.
    /// @param v ECDSA signature parameter v.
    /// @param r ECDSA signature parameters r.
    /// @param s ECDSA signature parameters s.
    /// @return Total amount of takerToken filled in trade.
    function fillOrder(
          address[5] orderAddresses,
          uint[6] orderValues,
          uint fillTakerTokenAmount,
          bool shouldThrowOnInsufficientBalanceOrAllowance,
          uint8 v,
          bytes32 r,
          bytes32 s)
          public
          returns (uint filledTakerTokenAmount)
    {
        Order memory order = Order({
            maker: orderAddresses[0],
            taker: orderAddresses[1],
            makerToken: orderAddresses[2],
            takerToken: orderAddresses[3],
            feeRecipient: orderAddresses[4],
            makerTokenAmount: orderValues[0],
            takerTokenAmount: orderValues[1],
            makerFee: orderValues[2],
            takerFee: orderValues[3],
            expirationTimestampInSec: orderValues[4],
            orderHash: getOrderHash(orderAddresses, orderValues)
        });

        require(order.taker == address(0) || order.taker == msg.sender);
        require(order.makerTokenAmount > 0 && order.takerTokenAmount > 0 && fillTakerTokenAmount > 0);
        require(isValidSignature(
            order.maker,
            order.orderHash,
            v,
            r,
            s
        ));

        if (block.timestamp >= order.expirationTimestampInSec) {
            LogError(uint8(Errors.ORDER_EXPIRED), order.orderHash);
            return 0;
        }

        uint remainingTakerTokenAmount = safeSub(order.takerTokenAmount, getUnavailableTakerTokenAmount(order.orderHash));
        filledTakerTokenAmount = min256(fillTakerTokenAmount, remainingTakerTokenAmount);
        if (filledTakerTokenAmount == 0) {
            LogError(uint8(Errors.ORDER_FULLY_FILLED_OR_CANCELLED), order.orderHash);
            return 0;
        }

        if (isRoundingError(filledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount)) {
            LogError(uint8(Errors.ROUNDING_ERROR_TOO_LARGE), order.orderHash);
            return 0;
        }

        if (!shouldThrowOnInsufficientBalanceOrAllowance && !isTransferable(order, filledTakerTokenAmount)) {
            LogError(uint8(Errors.INSUFFICIENT_BALANCE_OR_ALLOWANCE), order.orderHash);
            return 0;
        }

        uint filledMakerTokenAmount = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount);
        uint paidMakerFee;
        uint paidTakerFee;
        filled[order.orderHash] = safeAdd(filled[order.orderHash], filledTakerTokenAmount);
        require(transferViaTokenTransferProxy(
            order.makerToken,
            order.maker,
            msg.sender,
            filledMakerTokenAmount
        ));
        require(transferViaTokenTransferProxy(
            order.takerToken,
            msg.sender,
            order.maker,
            filledTakerTokenAmount
        ));
        if (order.feeRecipient != address(0)) {
            if (order.makerFee > 0) {
                paidMakerFee = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.makerFee);
                require(transferViaTokenTransferProxy(
                    ZRX_TOKEN_CONTRACT,
                    order.maker,
                    order.feeRecipient,
                    paidMakerFee
                ));
            }
            if (order.takerFee > 0) {
                paidTakerFee = getPartialAmount(filledTakerTokenAmount, order.takerTokenAmount, order.takerFee);
                require(transferViaTokenTransferProxy(
                    ZRX_TOKEN_CONTRACT,
                    msg.sender,
                    order.feeRecipient,
                    paidTakerFee
                ));
            }
        }

        LogFill(
            order.maker,
            msg.sender,
            order.feeRecipient,
            order.makerToken,
            order.takerToken,
            filledMakerTokenAmount,
            filledTakerTokenAmount,
            paidMakerFee,
            paidTakerFee,
            keccak256(order.makerToken, order.takerToken),
            order.orderHash
        );
        return filledTakerTokenAmount;
    }

    /// @dev Cancels the input order.
    /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient.
    /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt.
    /// @param cancelTakerTokenAmount Desired amount of takerToken to cancel in order.
    /// @return Amount of takerToken cancelled.
    function cancelOrder(
        address[5] orderAddresses,
        uint[6] orderValues,
        uint cancelTakerTokenAmount)
        public
        returns (uint)
    {
        Order memory order = Order({
            maker: orderAddresses[0],
            taker: orderAddresses[1],
            makerToken: orderAddresses[2],
            takerToken: orderAddresses[3],
            feeRecipient: orderAddresses[4],
            makerTokenAmount: orderValues[0],
            takerTokenAmount: orderValues[1],
            makerFee: orderValues[2],
            takerFee: orderValues[3],
            expirationTimestampInSec: orderValues[4],
            orderHash: getOrderHash(orderAddresses, orderValues)
        });

        require(order.maker == msg.sender);
        require(order.makerTokenAmount > 0 && order.takerTokenAmount > 0 && cancelTakerTokenAmount > 0);

        if (block.timestamp >= order.expirationTimestampInSec) {
            LogError(uint8(Errors.ORDER_EXPIRED), order.orderHash);
            return 0;
        }

        uint remainingTakerTokenAmount = safeSub(order.takerTokenAmount, getUnavailableTakerTokenAmount(order.orderHash));
        uint cancelledTakerTokenAmount = min256(cancelTakerTokenAmount, remainingTakerTokenAmount);
        if (cancelledTakerTokenAmount == 0) {
            LogError(uint8(Errors.ORDER_FULLY_FILLED_OR_CANCELLED), order.orderHash);
            return 0;
        }

        cancelled[order.orderHash] = safeAdd(cancelled[order.orderHash], cancelledTakerTokenAmount);

        LogCancel(
            order.maker,
            order.feeRecipient,
            order.makerToken,
            order.takerToken,
            getPartialAmount(cancelledTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount),
            cancelledTakerTokenAmount,
            keccak256(order.makerToken, order.takerToken),
            order.orderHash
        );
        return cancelledTakerTokenAmount;
    }

    /*
    * Wrapper functions
    */

    /// @dev Fills an order with specified parameters and ECDSA signature, throws if specified amount not filled entirely.
    /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient.
    /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt.
    /// @param fillTakerTokenAmount Desired amount of takerToken to fill.
    /// @param v ECDSA signature parameter v.
    /// @param r ECDSA signature parameters r.
    /// @param s ECDSA signature parameters s.
    function fillOrKillOrder(
        address[5] orderAddresses,
        uint[6] orderValues,
        uint fillTakerTokenAmount,
        uint8 v,
        bytes32 r,
        bytes32 s)
        public
    {
        require(fillOrder(
            orderAddresses,
            orderValues,
            fillTakerTokenAmount,
            false,
            v,
            r,
            s
        ) == fillTakerTokenAmount);
    }

    /// @dev Synchronously executes multiple fill orders in a single transaction.
    /// @param orderAddresses Array of address arrays containing individual order addresses.
    /// @param orderValues Array of uint arrays containing individual order values.
    /// @param fillTakerTokenAmounts Array of desired amounts of takerToken to fill in orders.
    /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfers will fail before attempting.
    /// @param v Array ECDSA signature v parameters.
    /// @param r Array of ECDSA signature r parameters.
    /// @param s Array of ECDSA signature s parameters.
    function batchFillOrders(
        address[5][] orderAddresses,
        uint[6][] orderValues,
        uint[] fillTakerTokenAmounts,
        bool shouldThrowOnInsufficientBalanceOrAllowance,
        uint8[] v,
        bytes32[] r,
        bytes32[] s)
        public
    {
        for (uint i = 0; i < orderAddresses.length; i++) {
            fillOrder(
                orderAddresses[i],
                orderValues[i],
                fillTakerTokenAmounts[i],
                shouldThrowOnInsufficientBalanceOrAllowance,
                v[i],
                r[i],
                s[i]
            );
        }
    }

    /// @dev Synchronously executes multiple fillOrKill orders in a single transaction.
    /// @param orderAddresses Array of address arrays containing individual order addresses.
    /// @param orderValues Array of uint arrays containing individual order values.
    /// @param fillTakerTokenAmounts Array of desired amounts of takerToken to fill in orders.
    /// @param v Array ECDSA signature v parameters.
    /// @param r Array of ECDSA signature r parameters.
    /// @param s Array of ECDSA signature s parameters.
    function batchFillOrKillOrders(
        address[5][] orderAddresses,
        uint[6][] orderValues,
        uint[] fillTakerTokenAmounts,
        uint8[] v,
        bytes32[] r,
        bytes32[] s)
        public
    {
        for (uint i = 0; i < orderAddresses.length; i++) {
            fillOrKillOrder(
                orderAddresses[i],
                orderValues[i],
                fillTakerTokenAmounts[i],
                v[i],
                r[i],
                s[i]
            );
        }
    }

    /// @dev Synchronously executes multiple fill orders in a single transaction until total fillTakerTokenAmount filled.
    /// @param orderAddresses Array of address arrays containing individual order addresses.
    /// @param orderValues Array of uint arrays containing individual order values.
    /// @param fillTakerTokenAmount Desired total amount of takerToken to fill in orders.
    /// @param shouldThrowOnInsufficientBalanceOrAllowance Test if transfers will fail before attempting.
    /// @param v Array ECDSA signature v parameters.
    /// @param r Array of ECDSA signature r parameters.
    /// @param s Array of ECDSA signature s parameters.
    /// @return Total amount of fillTakerTokenAmount filled in orders.
    function fillOrdersUpTo(
        address[5][] orderAddresses,
        uint[6][] orderValues,
        uint fillTakerTokenAmount,
        bool shouldThrowOnInsufficientBalanceOrAllowance,
        uint8[] v,
        bytes32[] r,
        bytes32[] s)
        public
        returns (uint)
    {
        uint filledTakerTokenAmount = 0;
        for (uint i = 0; i < orderAddresses.length; i++) {
            require(orderAddresses[i][3] == orderAddresses[0][3]); // takerToken must be the same for each order
            filledTakerTokenAmount = safeAdd(filledTakerTokenAmount, fillOrder(
                orderAddresses[i],
                orderValues[i],
                safeSub(fillTakerTokenAmount, filledTakerTokenAmount),
                shouldThrowOnInsufficientBalanceOrAllowance,
                v[i],
                r[i],
                s[i]
            ));
            if (filledTakerTokenAmount == fillTakerTokenAmount) break;
        }
        return filledTakerTokenAmount;
    }

    /// @dev Synchronously cancels multiple orders in a single transaction.
    /// @param orderAddresses Array of address arrays containing individual order addresses.
    /// @param orderValues Array of uint arrays containing individual order values.
    /// @param cancelTakerTokenAmounts Array of desired amounts of takerToken to cancel in orders.
    function batchCancelOrders(
        address[5][] orderAddresses,
        uint[6][] orderValues,
        uint[] cancelTakerTokenAmounts)
        public
    {
        for (uint i = 0; i < orderAddresses.length; i++) {
            cancelOrder(
                orderAddresses[i],
                orderValues[i],
                cancelTakerTokenAmounts[i]
            );
        }
    }

    /*
    * Constant public functions
    */

    /// @dev Calculates Keccak-256 hash of order with specified parameters.
    /// @param orderAddresses Array of order's maker, taker, makerToken, takerToken, and feeRecipient.
    /// @param orderValues Array of order's makerTokenAmount, takerTokenAmount, makerFee, takerFee, expirationTimestampInSec, and salt.
    /// @return Keccak-256 hash of order.
    function getOrderHash(address[5] orderAddresses, uint[6] orderValues)
        public
        constant
        returns (bytes32)
    {
        return keccak256(
            address(this),
            orderAddresses[0], // maker
            orderAddresses[1], // taker
            orderAddresses[2], // makerToken
            orderAddresses[3], // takerToken
            orderAddresses[4], // feeRecipient
            orderValues[0],    // makerTokenAmount
            orderValues[1],    // takerTokenAmount
            orderValues[2],    // makerFee
            orderValues[3],    // takerFee
            orderValues[4],    // expirationTimestampInSec
            orderValues[5]     // salt
        );
    }

    /// @dev Verifies that an order signature is valid.
    /// @param signer address of signer.
    /// @param hash Signed Keccak-256 hash.
    /// @param v ECDSA signature parameter v.
    /// @param r ECDSA signature parameters r.
    /// @param s ECDSA signature parameters s.
    /// @return Validity of order signature.
    function isValidSignature(
        address signer,
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s)
        public
        constant
        returns (bool)
    {
        return signer == ecrecover(
            keccak256("\x19Ethereum Signed Message:\n32", hash),
            v,
            r,
            s
        );
    }

    /// @dev Checks if rounding error > 0.1%.
    /// @param numerator Numerator.
    /// @param denominator Denominator.
    /// @param target Value to multiply with numerator/denominator.
    /// @return Rounding error is present.
    function isRoundingError(uint numerator, uint denominator, uint target)
        public
        constant
        returns (bool)
    {
        uint remainder = mulmod(target, numerator, denominator);
        if (remainder == 0) return false; // No rounding error.

        uint errPercentageTimes1000000 = safeDiv(
            safeMul(remainder, 1000000),
            safeMul(numerator, target)
        );
        return errPercentageTimes1000000 > 1000;
    }

    /// @dev Calculates partial value given a numerator and denominator.
    /// @param numerator Numerator.
    /// @param denominator Denominator.
    /// @param target Value to calculate partial of.
    /// @return Partial value of target.
    function getPartialAmount(uint numerator, uint denominator, uint target)
        public
        constant
        returns (uint)
    {
        return safeDiv(safeMul(numerator, target), denominator);
    }

    /// @dev Calculates the sum of values already filled and cancelled for a given order.
    /// @param orderHash The Keccak-256 hash of the given order.
    /// @return Sum of values already filled and cancelled.
    function getUnavailableTakerTokenAmount(bytes32 orderHash)
        public
        constant
        returns (uint)
    {
        return safeAdd(filled[orderHash], cancelled[orderHash]);
    }


    /*
    * Internal functions
    */

    /// @dev Transfers a token using TokenTransferProxy transferFrom function.
    /// @param token Address of token to transferFrom.
    /// @param from Address transfering token.
    /// @param to Address receiving token.
    /// @param value Amount of token to transfer.
    /// @return Success of token transfer.
    function transferViaTokenTransferProxy(
        address token,
        address from,
        address to,
        uint value)
        internal
        returns (bool)
    {
        return TokenTransferProxy(TOKEN_TRANSFER_PROXY_CONTRACT).transferFrom(token, from, to, value);
    }

    /// @dev Checks if any order transfers will fail.
    /// @param order Order struct of params that will be checked.
    /// @param fillTakerTokenAmount Desired amount of takerToken to fill.
    /// @return Predicted result of transfers.
    function isTransferable(Order order, uint fillTakerTokenAmount)
        internal
        constant  // The called token contracts may attempt to change state, but will not be able to due to gas limits on getBalance and getAllowance.
        returns (bool)
    {
        address taker = msg.sender;
        uint fillMakerTokenAmount = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.makerTokenAmount);

        if (order.feeRecipient != address(0)) {
            bool isMakerTokenZRX = order.makerToken == ZRX_TOKEN_CONTRACT;
            bool isTakerTokenZRX = order.takerToken == ZRX_TOKEN_CONTRACT;
            uint paidMakerFee = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.makerFee);
            uint paidTakerFee = getPartialAmount(fillTakerTokenAmount, order.takerTokenAmount, order.takerFee);
            uint requiredMakerZRX = isMakerTokenZRX ? safeAdd(fillMakerTokenAmount, paidMakerFee) : paidMakerFee;
            uint requiredTakerZRX = isTakerTokenZRX ? safeAdd(fillTakerTokenAmount, paidTakerFee) : paidTakerFee;

            if (   getBalance(ZRX_TOKEN_CONTRACT, order.maker) < requiredMakerZRX
                || getAllowance(ZRX_TOKEN_CONTRACT, order.maker) < requiredMakerZRX
                || getBalance(ZRX_TOKEN_CONTRACT, taker) < requiredTakerZRX
                || getAllowance(ZRX_TOKEN_CONTRACT, taker) < requiredTakerZRX
            ) return false;

            if (!isMakerTokenZRX && (   getBalance(order.makerToken, order.maker) < fillMakerTokenAmount // Don't double check makerToken if ZRX
                                     || getAllowance(order.makerToken, order.maker) < fillMakerTokenAmount)
            ) return false;
            if (!isTakerTokenZRX && (   getBalance(order.takerToken, taker) < fillTakerTokenAmount // Don't double check takerToken if ZRX
                                     || getAllowance(order.takerToken, taker) < fillTakerTokenAmount)
            ) return false;
        } else if (   getBalance(order.makerToken, order.maker) < fillMakerTokenAmount
                   || getAllowance(order.makerToken, order.maker) < fillMakerTokenAmount
                   || getBalance(order.takerToken, taker) < fillTakerTokenAmount
                   || getAllowance(order.takerToken, taker) < fillTakerTokenAmount
        ) return false;

        return true;
    }

    /// @dev Get token balance of an address.
    /// @param token Address of token.
    /// @param owner Address of owner.
    /// @return Token balance of owner.
    function getBalance(address token, address owner)
        internal
        constant  // The called token contract may attempt to change state, but will not be able to due to an added gas limit.
        returns (uint)
    {
        return Token(token).balanceOf.gas(EXTERNAL_QUERY_GAS_LIMIT)(owner); // Limit gas to prevent reentrancy
    }

    /// @dev Get allowance of token given to TokenTransferProxy by an address.
    /// @param token Address of token.
    /// @param owner Address of owner.
    /// @return Allowance of token given to TokenTransferProxy by owner.
    function getAllowance(address token, address owner)
        internal
        constant  // The called token contract may attempt to change state, but will not be able to due to an added gas limit.
        returns (uint)
    {
        return Token(token).allowance.gas(EXTERNAL_QUERY_GAS_LIMIT)(owner, TOKEN_TRANSFER_PROXY_CONTRACT); // Limit gas to prevent reentrancy
    }
}

Contract ABI
[{"constant":true,"inputs":[{"name":"numerator","type":"uint256"},{"name":"denominator","type":"uint256"},{"name":"target","type":"uint256"}],"name":"isRoundingError","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"","type":"bytes32"}],"name":"filled","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"","type":"bytes32"}],"name":"cancelled","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"orderAddresses","type":"address[5][]"},{"name":"orderValues","type":"uint256[6][]"},{"name":"fillTakerTokenAmount","type":"uint256"},{"name":"shouldThrowOnInsufficientBalanceOrAllowance","type":"bool"},{"name":"v","type":"uint8[]"},{"name":"r","type":"bytes32[]"},{"name":"s","type":"bytes32[]"}],"name":"fillOrdersUpTo","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"orderAddresses","type":"address[5]"},{"name":"orderValues","type":"uint256[6]"},{"name":"cancelTakerTokenAmount","type":"uint256"}],"name":"cancelOrder","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"ZRX_TOKEN_CONTRACT","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"orderAddresses","type":"address[5][]"},{"name":"orderValues","type":"uint256[6][]"},{"name":"fillTakerTokenAmounts","type":"uint256[]"},{"name":"v","type":"uint8[]"},{"name":"r","type":"bytes32[]"},{"name":"s","type":"bytes32[]"}],"name":"batchFillOrKillOrders","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"orderAddresses","type":"address[5]"},{"name":"orderValues","type":"uint256[6]"},{"name":"fillTakerTokenAmount","type":"uint256"},{"name":"v","type":"uint8"},{"name":"r","type":"bytes32"},{"name":"s","type":"bytes32"}],"name":"fillOrKillOrder","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"orderHash","type":"bytes32"}],"name":"getUnavailableTakerTokenAmount","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"signer","type":"address"},{"name":"hash","type":"bytes32"},{"name":"v","type":"uint8"},{"name":"r","type":"bytes32"},{"name":"s","type":"bytes32"}],"name":"isValidSignature","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"numerator","type":"uint256"},{"name":"denominator","type":"uint256"},{"name":"target","type":"uint256"}],"name":"getPartialAmount","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"TOKEN_TRANSFER_PROXY_CONTRACT","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"orderAddresses","type":"address[5][]"},{"name":"orderValues","type":"uint256[6][]"},{"name":"fillTakerTokenAmounts","type":"uint256[]"},{"name":"shouldThrowOnInsufficientBalanceOrAllowance","type":"bool"},{"name":"v","type":"uint8[]"},{"name":"r","type":"bytes32[]"},{"name":"s","type":"bytes32[]"}],"name":"batchFillOrders","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"orderAddresses","type":"address[5][]"},{"name":"orderValues","type":"uint256[6][]"},{"name":"cancelTakerTokenAmounts","type":"uint256[]"}],"name":"batchCancelOrders","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"orderAddresses","type":"address[5]"},{"name":"orderValues","type":"uint256[6]"},{"name":"fillTakerTokenAmount","type":"uint256"},{"name":"shouldThrowOnInsufficientBalanceOrAllowance","type":"bool"},{"name":"v","type":"uint8"},{"name":"r","type":"bytes32"},{"name":"s","type":"bytes32"}],"name":"fillOrder","outputs":[{"name":"filledTakerTokenAmount","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"orderAddresses","type":"address[5]"},{"name":"orderValues","type":"uint256[6]"}],"name":"getOrderHash","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"EXTERNAL_QUERY_GAS_LIMIT","outputs":[{"name":"","type":"uint16"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"VERSION","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"inputs":[{"name":"_zrxToken","type":"address"},{"name":"_tokenTransferProxy","type":"address"}],"payable":false,"type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"maker","type":"address"},{"indexed":false,"name":"taker","type":"address"},{"indexed":true,"name":"feeRecipient","type":"address"},{"indexed":false,"name":"makerToken","type":"address"},{"indexed":false,"name":"takerToken","type":"address"},{"indexed":false,"name":"filledMakerTokenAmount","type":"uint256"},{"indexed":false,"name":"filledTakerTokenAmount","type":"uint256"},{"indexed":false,"name":"paidMakerFee","type":"uint256"},{"indexed":false,"name":"paidTakerFee","type":"uint256"},{"indexed":true,"name":"tokens","type":"bytes32"},{"indexed":false,"name":"orderHash","type":"bytes32"}],"name":"LogFill","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"maker","type":"address"},{"indexed":true,"name":"feeRecipient","type":"address"},{"indexed":false,"name":"makerToken","type":"address"},{"indexed":false,"name":"takerToken","type":"address"},{"indexed":false,"name":"cancelledMakerTokenAmount","type":"uint256"},{"indexed":false,"name":"cancelledTakerTokenAmount","type":"uint256"},{"indexed":true,"name":"tokens","type":"bytes32"},{"indexed":false,"name":"orderHash","type":"bytes32"}],"name":"LogCancel","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"errorId","type":"uint8"},{"indexed":true,"name":"orderHash","type":"bytes32"}],"name":"LogError","type":"event"}]

Contract Creation Code
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    Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000e41d2489571d322189246dafa5ebde1f4699f4980000000000000000000000008da0d80f5007ef1e431dd2127178d224e32c2ef4

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000e41d2489571d322189246dafa5ebde1f4699f498
Arg [1] : 0000000000000000000000008da0d80f5007ef1e431dd2127178d224e32c2ef4


   Swarm Source:
bzzr://df5cabdc3a116e993e10bfb14823d18d9b798038d4c463a1703f9a584c456b7e
Block Age transaction Difficulty GasUsed Reward
Block Age Uncle Number Difficulty GasUsed Reward
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