Latest 25 txns From a total of 36 Transactions

TxHash Age From To Value [TxFee]
0x1cc8a8d3a4291a556411b248e045834093ed35748ab5c0b3c5b81b412947e97f29 days 22 hrs ago0x951ce9fd4fb6389a195f513a17a92d125d8d14a7  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.026833332
0xc08702099bd1a6c362bb7b5ea2c90db43f2d1c2d51fd2b4c257f86933c595c0f32 days 14 hrs ago0x951ce9fd4fb6389a195f513a17a92d125d8d14a7  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.0003347
0x6ae0b55e73af9eba2da8a7ba36476c8565f4fa1671b818139a16360c941c4abd53 days 20 hrs ago0x787b7c484fba6237dc156f9551c0bc804570c1d9  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.002957950096883 Ether0.000850605
0x375417ab64c4a32c8a1b3bd6408f0ee47fda41bf6acda51cdda91d427715b65353 days 20 hrs ago0x787b7c484fba6237dc156f9551c0bc804570c1d9  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.002957948814926 Ether0.000894261
0xc59606802910a2223560f7b07030bccbe0d7e6bcd97e24c90f325316723488f053 days 20 hrs ago0x787b7c484fba6237dc156f9551c0bc804570c1d9  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.002957948814927 Ether0.000682899
0x519b4bcdf36a7a7b178b2c6cd342d3e98d085a2071cea75f0606a7e5c7442c9b53 days 20 hrs ago0x787b7c484fba6237dc156f9551c0bc804570c1d9  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.002959644493735 Ether0.00051513
0xc34f97ebd221ecd9790d7f3deb8858241adb22fa0e4939dfa3f4f5cd8d6cc1f053 days 20 hrs ago0x787b7c484fba6237dc156f9551c0bc804570c1d9  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.002959679117633 Ether0.000395289
0x98b07f25a11bc72ffa0cbb2ceba926a7705e564a3cf52f3d98d57ce8bf2f5cf553 days 21 hrs ago0x787b7c484fba6237dc156f9551c0bc804570c1d9  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.002960010968331 Ether0.000395289
0xbdd7f6edcc281f3fd6b649dd4341dbf77621f297e35879b51e25db8a678b824553 days 21 hrs ago0x787b7c484fba6237dc156f9551c0bc804570c1d9  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.00296238466952 Ether0.000395289
0xb315cc50e7f9efd6b9e541176651f53ad2bfca1d5f1eeb324c6b99a04c58f7cd53 days 21 hrs ago0x787b7c484fba6237dc156f9551c0bc804570c1d9  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.001 Ether0.000559938
0x9201bc25020882b95ecd1bd468f225cd4c18fcae133614aa81053e6eaf56bc2d53 days 21 hrs ago0x787b7c484fba6237dc156f9551c0bc804570c1d9  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.001 Ether0.000345819
0x5413edcf560bc8470e345d48b81b3996bb20afa63699ecb59613e9143b79681f53 days 21 hrs ago0x787b7c484fba6237dc156f9551c0bc804570c1d9  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.001 Ether0.000576365
0x79a22a1e5a83f009174dc1ee85a1ab01f0bde2c23e3098b633e5cddb30d4baf853 days 21 hrs ago0x787b7c484fba6237dc156f9551c0bc804570c1d9  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.002968977756987 Ether0.002822563
0x16f8071e060fa00b607d14bcf18f9fba4fe0073b3ebc1203b9c4c1f65df0a76a57 days 14 hrs ago0x66666624fcef5d427d0142531d23ff6b61db23ef  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.0016522419
0xbc1709ceaaf158195c7d0bed7d5600450915d749e2916e685e285c4c8fc292a982 days 14 hrs ago0xa5fbe12f0a1e096de08d481b799fdf6bfe2f4fe1  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.00061798
0x83dc851ab3f8624b1fe57450eeddaf78a61b8a94cfa0a9c10fff69a70a82ae5197 days 15 hrs ago0x9fb4c5ef6e8d1d5441c80e53c997c5ba00a83e9b  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.001080569
0x59f9753213d8dec9b8907f0b649ca463329cdfa79e0c04c00b33080041ca4a8f97 days 18 hrs ago0x9fb4c5ef6e8d1d5441c80e53c997c5ba00a83e9b  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.000253445
0x173abf5e65b48647d95f47837ca7e32fb6deb99d16dccaa9ed67b12b13af441497 days 19 hrs ago0x9fb4c5ef6e8d1d5441c80e53c997c5ba00a83e9b  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.00025436
0x7e8c1f3fdbda30fec100eaf78be8fcdba108e583c89c13cf2fea40e8955eec4c97 days 20 hrs ago0x9fb4c5ef6e8d1d5441c80e53c997c5ba00a83e9b  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.000253445
0xbf493c989648caad9a6f3090b9de5af125a8966d8ce38649ac42099cfc15579c97 days 20 hrs ago0x9fb4c5ef6e8d1d5441c80e53c997c5ba00a83e9b  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.000253445
0xd44491e7b23df26ca5ffe47b4cfc4242f729e244abbc6856bb13b2c36d0c7c3d97 days 20 hrs ago0x9fb4c5ef6e8d1d5441c80e53c997c5ba00a83e9b  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.000253445
0xa51dae112f4797188075e996c0973fdf60855471cae6c9ab21ee89c1ac33ec4097 days 20 hrs ago0x9fb4c5ef6e8d1d5441c80e53c997c5ba00a83e9b  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.000253125
0xe68ae6b57cde89c07a965b1f8bdfdbb180c9987ae04a8c08696c8f6c834425bd97 days 20 hrs ago0x9fb4c5ef6e8d1d5441c80e53c997c5ba00a83e9b  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.000456201
0x6e3e1d36fc83dd74a69be1c4b88d74afd7c850021571d6b5020457239b1c0abf97 days 20 hrs ago0x9fb4c5ef6e8d1d5441c80e53c997c5ba00a83e9b  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.000253445
0x86e171b5435de9f7c6dcf1e9b7571b9d1bd98449ece529107b79c1dcaf9db0ae97 days 20 hrs ago0x9fb4c5ef6e8d1d5441c80e53c997c5ba00a83e9b  IN   0xf20b9e713a33f61fa38792d2afaf1cd30339126a0 Ether0.000456201
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 Internal Transactions as a result of Contract Execution
 Latest 25 Internal Txns, Click Here To View More View All
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0xb9debb3bc2c7ea5a5dd4fb26ff795b5cd893df9fc9182a1768f94d79f5be5ad06562319 35 secs ago0xf20b9e713a33f61fa38792d2afaf1cd30339126a0xc0829421c1d260bd3cb3e0f06cfe2d52db2ce3154.967095148785995669 Ether
0xb9debb3bc2c7ea5a5dd4fb26ff795b5cd893df9fc9182a1768f94d79f5be5ad06562319 35 secs ago0x3839416bd0095d97be9b354cbfb0f6807d4d609e0xf20b9e713a33f61fa38792d2afaf1cd30339126a4.967095148785995669 Ether
0x73bbfc8443de752a8f8f0991b84bbc64089b148d918e1a2e95b1b810bbcda85f6562319 35 secs ago0xf20b9e713a33f61fa38792d2afaf1cd30339126a0xc0829421c1d260bd3cb3e0f06cfe2d52db2ce3150.157536442648552773 Ether
0x73bbfc8443de752a8f8f0991b84bbc64089b148d918e1a2e95b1b810bbcda85f6562319 35 secs ago0x4ee51d6484b1789ba6e6ae766e93263f713bcb4d0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.157536442648552773 Ether
0x5b88ac746c4dc08f5e7c918a940e00036cd038ae859fce19c79e7ad0c5b68d6e6562319 35 secs ago0xf20b9e713a33f61fa38792d2afaf1cd30339126a0xc0829421c1d260bd3cb3e0f06cfe2d52db2ce3150.9 Ether
0x5b88ac746c4dc08f5e7c918a940e00036cd038ae859fce19c79e7ad0c5b68d6e6562319 35 secs ago0x3839416bd0095d97be9b354cbfb0f6807d4d609e0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.9 Ether
0xe12a33f483fd3ae7283066e2dd0ff4c709044a3cfe9144b18bfe86cc8afaa1176562319 35 secs ago0xf20b9e713a33f61fa38792d2afaf1cd30339126a0xc0829421c1d260bd3cb3e0f06cfe2d52db2ce3150.9 Ether
0xe12a33f483fd3ae7283066e2dd0ff4c709044a3cfe9144b18bfe86cc8afaa1176562319 35 secs ago0x3839416bd0095d97be9b354cbfb0f6807d4d609e0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.9 Ether
0xd918d5f2c5aa864e29005b33975f27b720cffc1e71f0d0e5c654a05acb4eec786562319 35 secs ago0xf20b9e713a33f61fa38792d2afaf1cd30339126a0xc0829421c1d260bd3cb3e0f06cfe2d52db2ce3156.9992711200964608 Ether
0xd918d5f2c5aa864e29005b33975f27b720cffc1e71f0d0e5c654a05acb4eec786562319 35 secs ago0x3839416bd0095d97be9b354cbfb0f6807d4d609e0xf20b9e713a33f61fa38792d2afaf1cd30339126a6.9992711200964608 Ether
0xa186d63c5defb793a85371c3c41ebb463251a990c43958fc52b9416be361065965623034 mins ago0xf20b9e713a33f61fa38792d2afaf1cd30339126a0xc0829421c1d260bd3cb3e0f06cfe2d52db2ce3150.5 Ether
0xa186d63c5defb793a85371c3c41ebb463251a990c43958fc52b9416be361065965623034 mins ago0x3839416bd0095d97be9b354cbfb0f6807d4d609e0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.5 Ether
0x4c9337ec744f70cc5c9e8d4fb227e8f3ccd6525926afe8ebe3bfa0ff0054e6d165623034 mins ago0xf20b9e713a33f61fa38792d2afaf1cd30339126a0xc0829421c1d260bd3cb3e0f06cfe2d52db2ce3155 Ether
0x4c9337ec744f70cc5c9e8d4fb227e8f3ccd6525926afe8ebe3bfa0ff0054e6d165623034 mins ago0x3839416bd0095d97be9b354cbfb0f6807d4d609e0xf20b9e713a33f61fa38792d2afaf1cd30339126a5 Ether
0x6c65c86b9fa3cb1b88284c65efb355af83a0641889d086ddbf8a99addf2dca6b65623034 mins ago0xf20b9e713a33f61fa38792d2afaf1cd30339126a0xc0829421c1d260bd3cb3e0f06cfe2d52db2ce3158 Ether
0x6c65c86b9fa3cb1b88284c65efb355af83a0641889d086ddbf8a99addf2dca6b65623034 mins ago0x3839416bd0095d97be9b354cbfb0f6807d4d609e0xf20b9e713a33f61fa38792d2afaf1cd30339126a8 Ether
0xa94fbc321178f362f5f0a10e5dc1276809ce197194586f51b0e400905ebbf47d65622946 mins ago0xf20b9e713a33f61fa38792d2afaf1cd30339126a0xc0829421c1d260bd3cb3e0f06cfe2d52db2ce3150.3 Ether
0xa94fbc321178f362f5f0a10e5dc1276809ce197194586f51b0e400905ebbf47d65622946 mins ago0x3839416bd0095d97be9b354cbfb0f6807d4d609e0xf20b9e713a33f61fa38792d2afaf1cd30339126a0.3 Ether
0x99a233fff5aef576a237b81c3af8fb69d662dad9b909b3dd604c3270402fa95c65622858 mins ago0xf20b9e713a33f61fa38792d2afaf1cd30339126a0xc0829421c1d260bd3cb3e0f06cfe2d52db2ce3156.5 Ether
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0xab157d5764e62cf8388c86a01eeaabf91823a154b443e6828cd7e7d60ba3c3e665622848 mins ago0xf20b9e713a33f61fa38792d2afaf1cd30339126a0xc0829421c1d260bd3cb3e0f06cfe2d52db2ce3157 Ether
0xab157d5764e62cf8388c86a01eeaabf91823a154b443e6828cd7e7d60ba3c3e665622848 mins ago0x3839416bd0095d97be9b354cbfb0f6807d4d609e0xf20b9e713a33f61fa38792d2afaf1cd30339126a7 Ether
0x3cf3e9188445f31250fce6ee2ae869b9cd04709fb52cf48026db9eca47301c5a65622838 mins ago0xf20b9e713a33f61fa38792d2afaf1cd30339126a0xc0829421c1d260bd3cb3e0f06cfe2d52db2ce3151 Ether
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Warning: The Compiled Contract might be susceptible to ExpExponentCleanup (medium/high-severity), EventStructWrongData (very low-severity), NestedArrayFunctionCallDecoder (medium-severity) SolidityCompiler Bugs.

Contract Source Code Verified (Exact Match)
Contract Name: BancorNetwork
Compiler Text: v0.4.21+commit.dfe3193c
Optimization Enabled: Yes
Runs (Optimiser):  500



  Contract Source Code   Find Similiar Contracts

pragma solidity ^0.4.21;

/*
    Owned contract interface
*/
contract IOwned {
    // this function isn't abstract since the compiler emits automatically generated getter functions as external
    function owner() public view returns (address) {}

    function transferOwnership(address _newOwner) public;
    function acceptOwnership() public;
}

/*
    ERC20 Standard Token interface
*/
contract IERC20Token {
    // these functions aren't abstract since the compiler emits automatically generated getter functions as external
    function name() public view returns (string) {}
    function symbol() public view returns (string) {}
    function decimals() public view returns (uint8) {}
    function totalSupply() public view returns (uint256) {}
    function balanceOf(address _owner) public view returns (uint256) { _owner; }
    function allowance(address _owner, address _spender) public view returns (uint256) { _owner; _spender; }

    function transfer(address _to, uint256 _value) public returns (bool success);
    function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
    function approve(address _spender, uint256 _value) public returns (bool success);
}

/*
    Contract Registry interface
*/
contract IContractRegistry {
    function getAddress(bytes32 _contractName) public view returns (address);
}

/*
    Contract Features interface
*/
contract IContractFeatures {
    function isSupported(address _contract, uint256 _features) public view returns (bool);
    function enableFeatures(uint256 _features, bool _enable) public;
}

/*
    Whitelist interface
*/
contract IWhitelist {
    function isWhitelisted(address _address) public view returns (bool);
}

/*
    Token Holder interface
*/
contract ITokenHolder is IOwned {
    function withdrawTokens(IERC20Token _token, address _to, uint256 _amount) public;
}

/*
    Ether Token interface
*/
contract IEtherToken is ITokenHolder, IERC20Token {
    function deposit() public payable;
    function withdraw(uint256 _amount) public;
    function withdrawTo(address _to, uint256 _amount) public;
}

/*
    Smart Token interface
*/
contract ISmartToken is IOwned, IERC20Token {
    function disableTransfers(bool _disable) public;
    function issue(address _to, uint256 _amount) public;
    function destroy(address _from, uint256 _amount) public;
}

/*
    Bancor Gas Price Limit interface
*/
contract IBancorGasPriceLimit {
    function gasPrice() public view returns (uint256) {}
    function validateGasPrice(uint256) public view;
}

/*
    Bancor Converter interface
*/
contract IBancorConverter {
    function getReturn(IERC20Token _fromToken, IERC20Token _toToken, uint256 _amount) public view returns (uint256);
    function convert(IERC20Token _fromToken, IERC20Token _toToken, uint256 _amount, uint256 _minReturn) public returns (uint256);
    function conversionWhitelist() public view returns (IWhitelist) {}
    // deprecated, backward compatibility
    function change(IERC20Token _fromToken, IERC20Token _toToken, uint256 _amount, uint256 _minReturn) public returns (uint256);
}

/*
    Bancor Network interface
*/
contract IBancorNetwork {
    function convert(IERC20Token[] _path, uint256 _amount, uint256 _minReturn) public payable returns (uint256);
    function convertFor(IERC20Token[] _path, uint256 _amount, uint256 _minReturn, address _for) public payable returns (uint256);
    function convertForPrioritized2(
        IERC20Token[] _path,
        uint256 _amount,
        uint256 _minReturn,
        address _for,
        uint256 _block,
        uint8 _v,
        bytes32 _r,
        bytes32 _s)
        public payable returns (uint256);

    // deprecated, backward compatibility
    function convertForPrioritized(
        IERC20Token[] _path,
        uint256 _amount,
        uint256 _minReturn,
        address _for,
        uint256 _block,
        uint256 _nonce,
        uint8 _v,
        bytes32 _r,
        bytes32 _s)
        public payable returns (uint256);
}

/*
    Utilities & Common Modifiers
*/
contract Utils {
    /**
        constructor
    */
    function Utils() public {
    }

    // verifies that an amount is greater than zero
    modifier greaterThanZero(uint256 _amount) {
        require(_amount > 0);
        _;
    }

    // validates an address - currently only checks that it isn't null
    modifier validAddress(address _address) {
        require(_address != address(0));
        _;
    }

    // verifies that the address is different than this contract address
    modifier notThis(address _address) {
        require(_address != address(this));
        _;
    }

    // Overflow protected math functions

    /**
        @dev returns the sum of _x and _y, asserts if the calculation overflows

        @param _x   value 1
        @param _y   value 2

        @return sum
    */
    function safeAdd(uint256 _x, uint256 _y) internal pure returns (uint256) {
        uint256 z = _x + _y;
        assert(z >= _x);
        return z;
    }

    /**
        @dev returns the difference of _x minus _y, asserts if the subtraction results in a negative number

        @param _x   minuend
        @param _y   subtrahend

        @return difference
    */
    function safeSub(uint256 _x, uint256 _y) internal pure returns (uint256) {
        assert(_x >= _y);
        return _x - _y;
    }

    /**
        @dev returns the product of multiplying _x by _y, asserts if the calculation overflows

        @param _x   factor 1
        @param _y   factor 2

        @return product
    */
    function safeMul(uint256 _x, uint256 _y) internal pure returns (uint256) {
        uint256 z = _x * _y;
        assert(_x == 0 || z / _x == _y);
        return z;
    }
}

/*
    Provides support and utilities for contract ownership
*/
contract Owned is IOwned {
    address public owner;
    address public newOwner;

    event OwnerUpdate(address indexed _prevOwner, address indexed _newOwner);

    /**
        @dev constructor
    */
    function Owned() public {
        owner = msg.sender;
    }

    // allows execution by the owner only
    modifier ownerOnly {
        assert(msg.sender == owner);
        _;
    }

    /**
        @dev allows transferring the contract ownership
        the new owner still needs to accept the transfer
        can only be called by the contract owner

        @param _newOwner    new contract owner
    */
    function transferOwnership(address _newOwner) public ownerOnly {
        require(_newOwner != owner);
        newOwner = _newOwner;
    }

    /**
        @dev used by a new owner to accept an ownership transfer
    */
    function acceptOwnership() public {
        require(msg.sender == newOwner);
        emit OwnerUpdate(owner, newOwner);
        owner = newOwner;
        newOwner = address(0);
    }
}

/**
    Id definitions for bancor contracts

    Can be used in conjunction with the contract registry to get contract addresses
*/
contract ContractIds {
    bytes32 public constant BANCOR_NETWORK = "BancorNetwork";
    bytes32 public constant BANCOR_FORMULA = "BancorFormula";
    bytes32 public constant CONTRACT_FEATURES = "ContractFeatures";
}

/**
    Id definitions for bancor contract features

    Can be used to query the ContractFeatures contract to check whether a certain feature is supported by a contract
*/
contract FeatureIds {
    // converter features
    uint256 public constant CONVERTER_CONVERSION_WHITELIST = 1 << 0;
}

/*
    We consider every contract to be a 'token holder' since it's currently not possible
    for a contract to deny receiving tokens.

    The TokenHolder's contract sole purpose is to provide a safety mechanism that allows
    the owner to send tokens that were sent to the contract by mistake back to their sender.
*/
contract TokenHolder is ITokenHolder, Owned, Utils {
    /**
        @dev constructor
    */
    function TokenHolder() public {
    }

    /**
        @dev withdraws tokens held by the contract and sends them to an account
        can only be called by the owner

        @param _token   ERC20 token contract address
        @param _to      account to receive the new amount
        @param _amount  amount to withdraw
    */
    function withdrawTokens(IERC20Token _token, address _to, uint256 _amount)
        public
        ownerOnly
        validAddress(_token)
        validAddress(_to)
        notThis(_to)
    {
        assert(_token.transfer(_to, _amount));
    }
}

/*
    The BancorNetwork contract is the main entry point for bancor token conversions.
    It also allows converting between any token in the bancor network to any other token
    in a single transaction by providing a conversion path.

    A note on conversion path -
    Conversion path is a data structure that's used when converting a token to another token in the bancor network
    when the conversion cannot necessarily be done by single converter and might require multiple 'hops'.
    The path defines which converters should be used and what kind of conversion should be done in each step.

    The path format doesn't include complex structure and instead, it is represented by a single array
    in which each 'hop' is represented by a 2-tuple - smart token & to token.
    In addition, the first element is always the source token.
    The smart token is only used as a pointer to a converter (since converter addresses are more likely to change).

    Format:
    [source token, smart token, to token, smart token, to token...]
*/
contract BancorNetwork is IBancorNetwork, TokenHolder, ContractIds, FeatureIds {
    address public signerAddress = 0x0;         // verified address that allows conversions with higher gas price
    IContractRegistry public registry;          // contract registry contract address
    IBancorGasPriceLimit public gasPriceLimit;  // bancor universal gas price limit contract

    mapping (address => bool) public etherTokens;       // list of all supported ether tokens
    mapping (bytes32 => bool) public conversionHashes;  // list of conversion hashes, to prevent re-use of the same hash

    /**
        @dev constructor

        @param _registry    address of a contract registry contract
    */
    function BancorNetwork(IContractRegistry _registry) public validAddress(_registry) {
        registry = _registry;
    }

    // validates a conversion path - verifies that the number of elements is odd and that maximum number of 'hops' is 10
    modifier validConversionPath(IERC20Token[] _path) {
        require(_path.length > 2 && _path.length <= (1 + 2 * 10) && _path.length % 2 == 1);
        _;
    }

    /*
        @dev allows the owner to update the contract registry contract address

        @param _registry   address of a contract registry contract
    */
    function setContractRegistry(IContractRegistry _registry)
        public
        ownerOnly
        validAddress(_registry)
        notThis(_registry)
    {
        registry = _registry;
    }

    /*
        @dev allows the owner to update the gas price limit contract address

        @param _gasPriceLimit   address of a bancor gas price limit contract
    */
    function setGasPriceLimit(IBancorGasPriceLimit _gasPriceLimit)
        public
        ownerOnly
        validAddress(_gasPriceLimit)
        notThis(_gasPriceLimit)
    {
        gasPriceLimit = _gasPriceLimit;
    }

    /*
        @dev allows the owner to update the signer address

        @param _signerAddress    new signer address
    */
    function setSignerAddress(address _signerAddress)
        public
        ownerOnly
        validAddress(_signerAddress)
        notThis(_signerAddress)
    {
        signerAddress = _signerAddress;
    }

    /**
        @dev allows the owner to register/unregister ether tokens

        @param _token       ether token contract address
        @param _register    true to register, false to unregister
    */
    function registerEtherToken(IEtherToken _token, bool _register)
        public
        ownerOnly
        validAddress(_token)
        notThis(_token)
    {
        etherTokens[_token] = _register;
    }

    /**
        @dev verifies that the signer address is trusted by recovering 
        the address associated with the public key from elliptic 
        curve signature, returns zero on error.
        notice that the signature is valid only for one conversion
        and expires after the give block.

        @return true if the signer is verified
    */
    function verifyTrustedSender(IERC20Token[] _path, uint256 _amount, uint256 _block, address _addr, uint8 _v, bytes32 _r, bytes32 _s) private returns(bool) {
        bytes32 hash = keccak256(_block, tx.gasprice, _addr, msg.sender, _amount, _path);

        // checking that it is the first conversion with the given signature
        // and that the current block number doesn't exceeded the maximum block
        // number that's allowed with the current signature
        require(!conversionHashes[hash] && block.number <= _block);

        // recovering the signing address and comparing it to the trusted signer
        // address that was set in the contract
        bytes32 prefixedHash = keccak256("\x19Ethereum Signed Message:\n32", hash);
        bool verified = ecrecover(prefixedHash, _v, _r, _s) == signerAddress;

        // if the signer is the trusted signer - mark the hash so that it can't
        // be used multiple times
        if (verified)
            conversionHashes[hash] = true;
        return verified;
    }

    /**
        @dev converts the token to any other token in the bancor network by following
        a predefined conversion path and transfers the result tokens to a target account
        note that the converter should already own the source tokens

        @param _path        conversion path, see conversion path format above
        @param _amount      amount to convert from (in the initial source token)
        @param _minReturn   if the conversion results in an amount smaller than the minimum return - it is cancelled, must be nonzero
        @param _for         account that will receive the conversion result

        @return tokens issued in return
    */
    function convertFor(IERC20Token[] _path, uint256 _amount, uint256 _minReturn, address _for) public payable returns (uint256) {
        return convertForPrioritized2(_path, _amount, _minReturn, _for, 0x0, 0x0, 0x0, 0x0);
    }

    /**
        @dev converts the token to any other token in the bancor network
        by following a predefined conversion path and transfers the result
        tokens to a target account.
        this version of the function also allows the verified signer
        to bypass the universal gas price limit.
        note that the converter should already own the source tokens

        @param _path        conversion path, see conversion path format above
        @param _amount      amount to convert from (in the initial source token)
        @param _minReturn   if the conversion results in an amount smaller than the minimum return - it is cancelled, must be nonzero
        @param _for         account that will receive the conversion result

        @return tokens issued in return
    */
    function convertForPrioritized2(IERC20Token[] _path, uint256 _amount, uint256 _minReturn, address _for, uint256 _block, uint8 _v, bytes32 _r, bytes32 _s)
        public
        payable
        validConversionPath(_path)
        returns (uint256)
    {
        // if ETH is provided, ensure that the amount is identical to _amount and verify that the source token is an ether token
        IERC20Token fromToken = _path[0];
        require(msg.value == 0 || (_amount == msg.value && etherTokens[fromToken]));

        // if ETH was sent with the call, the source is an ether token - deposit the ETH in it
        // otherwise, we assume we already have the tokens
        if (msg.value > 0)
            IEtherToken(fromToken).deposit.value(msg.value)();

        return convertForInternal(_path, _amount, _minReturn, _for, _block, _v, _r, _s);
    }

    /**
        @dev converts token to any other token in the bancor network
        by following the predefined conversion paths and transfers the result
        tokens to a targeted account.
        this version of the function also allows multiple conversions
        in a single atomic transaction.
        note that the converter should already own the source tokens

        @param _paths           merged conversion paths, i.e. [path1, path2, ...]. see conversion path format above
        @param _pathStartIndex  each item in the array is the start index of the nth path in _paths
        @param _amounts         amount to convert from (in the initial source token) for each path
        @param _minReturns      minimum return for each path. if the conversion results in an amount 
                                smaller than the minimum return - it is cancelled, must be nonzero
        @param _for             account that will receive the conversions result

        @return amount of conversion result for each path
    */
    function convertForMultiple(IERC20Token[] _paths, uint256[] _pathStartIndex, uint256[] _amounts, uint256[] _minReturns, address _for)
        public
        payable
        returns (uint256[])
    {
        // if ETH is provided, ensure that the total amount was converted into other tokens
        uint256 convertedValue = 0;
        uint256 pathEndIndex;
        
        // iterate over the conversion paths
        for (uint256 i = 0; i < _pathStartIndex.length; i += 1) {
            pathEndIndex = i == (_pathStartIndex.length - 1) ? _paths.length : _pathStartIndex[i + 1];

            // copy a single path from _paths into an array
            IERC20Token[] memory path = new IERC20Token[](pathEndIndex - _pathStartIndex[i]);
            for (uint256 j = _pathStartIndex[i]; j < pathEndIndex; j += 1) {
                path[j - _pathStartIndex[i]] = _paths[j];
            }

            // if ETH is provided, ensure that the amount is lower than the path amount and
            // verify that the source token is an ether token. otherwise ensure that 
            // the source is not an ether token
            IERC20Token fromToken = path[0];
            require(msg.value == 0 || (_amounts[i] <= msg.value && etherTokens[fromToken]) || !etherTokens[fromToken]);

            // if ETH was sent with the call, the source is an ether token - deposit the ETH path amount in it.
            // otherwise, we assume we already have the tokens
            if (msg.value > 0 && etherTokens[fromToken]) {
                IEtherToken(fromToken).deposit.value(_amounts[i])();
                convertedValue += _amounts[i];
            }
            _amounts[i] = convertForInternal(path, _amounts[i], _minReturns[i], _for, 0x0, 0x0, 0x0, 0x0);
        }

        // if ETH was provided, ensure that the full amount was converted
        require(convertedValue == msg.value);

        return _amounts;
    }

    /**
        @dev converts token to any other token in the bancor network
        by following a predefined conversion paths and transfers the result
        tokens to a target account.

        @param _path        conversion path, see conversion path format above
        @param _amount      amount to convert from (in the initial source token)
        @param _minReturn   if the conversion results in an amount smaller than the minimum return - it is cancelled, must be nonzero
        @param _for         account that will receive the conversion result
        @param _block       if the current block exceeded the given parameter - it is cancelled
        @param _v           (signature[128:130]) associated with the signer address and helps to validate if the signature is legit
        @param _r           (signature[0:64]) associated with the signer address and helps to validate if the signature is legit
        @param _s           (signature[64:128]) associated with the signer address and helps to validate if the signature is legit

        @return tokens issued in return
    */
    function convertForInternal(
        IERC20Token[] _path, 
        uint256 _amount, 
        uint256 _minReturn, 
        address _for, 
        uint256 _block, 
        uint8 _v, 
        bytes32 _r, 
        bytes32 _s
    )
        private
        validConversionPath(_path)
        returns (uint256)
    {
        if (_v == 0x0 && _r == 0x0 && _s == 0x0)
            gasPriceLimit.validateGasPrice(tx.gasprice);
        else
            require(verifyTrustedSender(_path, _amount, _block, _for, _v, _r, _s));

        // if ETH is provided, ensure that the amount is identical to _amount and verify that the source token is an ether token
        IERC20Token fromToken = _path[0];

        IERC20Token toToken;
        
        (toToken, _amount) = convertByPath(_path, _amount, _minReturn, fromToken, _for);

        // finished the conversion, transfer the funds to the target account
        // if the target token is an ether token, withdraw the tokens and send them as ETH
        // otherwise, transfer the tokens as is
        if (etherTokens[toToken])
            IEtherToken(toToken).withdrawTo(_for, _amount);
        else
            assert(toToken.transfer(_for, _amount));

        return _amount;
    }

    /**
        @dev executes the actual conversion by following the conversion path

        @param _path        conversion path, see conversion path format above
        @param _amount      amount to convert from (in the initial source token)
        @param _minReturn   if the conversion results in an amount smaller than the minimum return - it is cancelled, must be nonzero
        @param _fromToken   ERC20 token to convert from (the first element in the path)
        @param _for         account that will receive the conversion result

        @return ERC20 token to convert to (the last element in the path) & tokens issued in return
    */
    function convertByPath(
        IERC20Token[] _path,
        uint256 _amount,
        uint256 _minReturn,
        IERC20Token _fromToken,
        address _for
    ) private returns (IERC20Token, uint256) {
        ISmartToken smartToken;
        IERC20Token toToken;
        IBancorConverter converter;

        // get the contract features address from the registry
        IContractFeatures features = IContractFeatures(registry.getAddress(ContractIds.CONTRACT_FEATURES));

        // iterate over the conversion path
        uint256 pathLength = _path.length;
        for (uint256 i = 1; i < pathLength; i += 2) {
            smartToken = ISmartToken(_path[i]);
            toToken = _path[i + 1];
            converter = IBancorConverter(smartToken.owner());
            checkWhitelist(converter, _for, features);

            // if the smart token isn't the source (from token), the converter doesn't have control over it and thus we need to approve the request
            if (smartToken != _fromToken)
                ensureAllowance(_fromToken, converter, _amount);

            // make the conversion - if it's the last one, also provide the minimum return value
            _amount = converter.change(_fromToken, toToken, _amount, i == pathLength - 2 ? _minReturn : 1);
            _fromToken = toToken;
        }
        return (toToken, _amount);
    }

    /**
        @dev checks whether the given converter supports a whitelist and if so, ensures that
        the account that should receive the conversion result is actually whitelisted

        @param _converter   converter to check for whitelist
        @param _for         account that will receive the conversion result
        @param _features    contract features contract address
    */
    function checkWhitelist(IBancorConverter _converter, address _for, IContractFeatures _features) private view {
        IWhitelist whitelist;

        // check if the converter supports the conversion whitelist feature
        if (!_features.isSupported(_converter, FeatureIds.CONVERTER_CONVERSION_WHITELIST))
            return;

        // get the whitelist contract from the converter
        whitelist = _converter.conversionWhitelist();
        if (whitelist == address(0))
            return;

        // check if the account that should receive the conversion result is actually whitelisted
        require(whitelist.isWhitelisted(_for));
    }

    /**
        @dev claims the caller's tokens, converts them to any other token in the bancor network
        by following a predefined conversion path and transfers the result tokens to a target account
        note that allowance must be set beforehand

        @param _path        conversion path, see conversion path format above
        @param _amount      amount to convert from (in the initial source token)
        @param _minReturn   if the conversion results in an amount smaller than the minimum return - it is cancelled, must be nonzero
        @param _for         account that will receive the conversion result

        @return tokens issued in return
    */
    function claimAndConvertFor(IERC20Token[] _path, uint256 _amount, uint256 _minReturn, address _for) public returns (uint256) {
        // we need to transfer the tokens from the caller to the converter before we follow
        // the conversion path, to allow it to execute the conversion on behalf of the caller
        // note: we assume we already have allowance
        IERC20Token fromToken = _path[0];
        assert(fromToken.transferFrom(msg.sender, this, _amount));
        return convertFor(_path, _amount, _minReturn, _for);
    }

    /**
        @dev converts the token to any other token in the bancor network by following
        a predefined conversion path and transfers the result tokens back to the sender
        note that the converter should already own the source tokens

        @param _path        conversion path, see conversion path format above
        @param _amount      amount to convert from (in the initial source token)
        @param _minReturn   if the conversion results in an amount smaller than the minimum return - it is cancelled, must be nonzero

        @return tokens issued in return
    */
    function convert(IERC20Token[] _path, uint256 _amount, uint256 _minReturn) public payable returns (uint256) {
        return convertFor(_path, _amount, _minReturn, msg.sender);
    }

    /**
        @dev claims the caller's tokens, converts them to any other token in the bancor network
        by following a predefined conversion path and transfers the result tokens back to the sender
        note that allowance must be set beforehand

        @param _path        conversion path, see conversion path format above
        @param _amount      amount to convert from (in the initial source token)
        @param _minReturn   if the conversion results in an amount smaller than the minimum return - it is cancelled, must be nonzero

        @return tokens issued in return
    */
    function claimAndConvert(IERC20Token[] _path, uint256 _amount, uint256 _minReturn) public returns (uint256) {
        return claimAndConvertFor(_path, _amount, _minReturn, msg.sender);
    }

    /**
        @dev utility, checks whether allowance for the given spender exists and approves one if it doesn't

        @param _token   token to check the allowance in
        @param _spender approved address
        @param _value   allowance amount
    */
    function ensureAllowance(IERC20Token _token, address _spender, uint256 _value) private {
        // check if allowance for the given amount already exists
        if (_token.allowance(this, _spender) >= _value)
            return;

        // if the allowance is nonzero, must reset it to 0 first
        if (_token.allowance(this, _spender) != 0)
            assert(_token.approve(_spender, 0));

        // approve the new allowance
        assert(_token.approve(_spender, _value));
    }

    // deprecated, backward compatibility
    function convertForPrioritized(
        IERC20Token[] _path,
        uint256 _amount,
        uint256 _minReturn,
        address _for,
        uint256 _block,
        uint256 _nonce,
        uint8 _v,
        bytes32 _r,
        bytes32 _s)
        public payable returns (uint256)
    {
        convertForPrioritized2(_path, _amount, _minReturn, _for, _block, _v, _r, _s);
    }
}

    Contract ABI  
[{"constant":false,"inputs":[{"name":"_token","type":"address"},{"name":"_register","type":"bool"}],"name":"registerEtherToken","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_signerAddress","type":"address"}],"name":"setSignerAddress","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_path","type":"address[]"},{"name":"_amount","type":"uint256"},{"name":"_minReturn","type":"uint256"},{"name":"_for","type":"address"},{"name":"_block","type":"uint256"},{"name":"_nonce","type":"uint256"},{"name":"_v","type":"uint8"},{"name":"_r","type":"bytes32"},{"name":"_s","type":"bytes32"}],"name":"convertForPrioritized","outputs":[{"name":"","type":"uint256"}],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"signerAddress","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_token","type":"address"},{"name":"_to","type":"address"},{"name":"_amount","type":"uint256"}],"name":"withdrawTokens","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_path","type":"address[]"},{"name":"_amount","type":"uint256"},{"name":"_minReturn","type":"uint256"},{"name":"_for","type":"address"},{"name":"_block","type":"uint256"},{"name":"_v","type":"uint8"},{"name":"_r","type":"bytes32"},{"name":"_s","type":"bytes32"}],"name":"convertForPrioritized2","outputs":[{"name":"","type":"uint256"}],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"BANCOR_FORMULA","outputs":[{"name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"acceptOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"registry","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"etherTokens","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"CONTRACT_FEATURES","outputs":[{"name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"bytes32"}],"name":"conversionHashes","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"BANCOR_NETWORK","outputs":[{"name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"CONVERTER_CONVERSION_WHITELIST","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"gasPriceLimit","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_path","type":"address[]"},{"name":"_amount","type":"uint256"},{"name":"_minReturn","type":"uint256"},{"name":"_for","type":"address"}],"name":"claimAndConvertFor","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_paths","type":"address[]"},{"name":"_pathStartIndex","type":"uint256[]"},{"name":"_amounts","type":"uint256[]"},{"name":"_minReturns","type":"uint256[]"},{"name":"_for","type":"address"}],"name":"convertForMultiple","outputs":[{"name":"","type":"uint256[]"}],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[{"name":"_path","type":"address[]"},{"name":"_amount","type":"uint256"},{"name":"_minReturn","type":"uint256"}],"name":"claimAndConvert","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_path","type":"address[]"},{"name":"_amount","type":"uint256"},{"name":"_minReturn","type":"uint256"},{"name":"_for","type":"address"}],"name":"convertFor","outputs":[{"name":"","type":"uint256"}],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"newOwner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_gasPriceLimit","type":"address"}],"name":"setGasPriceLimit","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_path","type":"address[]"},{"name":"_amount","type":"uint256"},{"name":"_minReturn","type":"uint256"}],"name":"convert","outputs":[{"name":"","type":"uint256"}],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[{"name":"_registry","type":"address"}],"name":"setContractRegistry","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"_registry","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_prevOwner","type":"address"},{"indexed":true,"name":"_newOwner","type":"address"}],"name":"OwnerUpdate","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)
000000000000000000000000d1997064f0fef8748c1de9b5ba53468c548738b3

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000d1997064f0fef8748c1de9b5ba53468c548738b3


   Swarm Source:
bzzr://4f6b20481b8c9fb5a62ae9101cf319282a872cf90025919c686bed4661f05cbe

 

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