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1 address found via
Transaction Hash
Method
Block
From
To
Set Internal Inv...85432722019-09-13 19:59:412353 days ago1568404781IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0007980821
Set Internal Inv...85432682019-09-13 19:57:402353 days ago1568404660IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0007980821
Set Internal Inv...85432432019-09-13 19:50:172353 days ago1568404217IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0005318221
Set Internal Inv...85432412019-09-13 19:49:532353 days ago1568404193IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0005318221
Transfer Admin81040392019-07-07 11:55:242422 days ago1562500524IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0012297127
Claim Admin81040342019-07-07 11:54:372422 days ago1562500477IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0005314627
Withdraw Token80479522019-06-28 18:29:222431 days ago1561746562IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0014237133
Withdraw Token80479402019-06-28 18:25:562431 days ago1561746356IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0009428337
Withdraw Ether79706242019-06-16 16:34:462443 days ago1560702886IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0006682819
Withdraw Ether79706062019-06-16 16:30:112443 days ago1560702611IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0002706611
Withdraw Ether77954912019-05-20 7:14:402470 days ago1558336480IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0006381119
List Token77771152019-05-17 10:11:482473 days ago1558087908IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0025522519
List Token77764102019-05-17 7:35:052473 days ago1558078505IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0021907719
Set Fee77764032019-05-17 7:34:062473 days ago1558078446IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0005397919
Withdraw Ether77763942019-05-17 7:32:472473 days ago1558078367IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0006682819
Transfer Admin77763842019-05-17 7:31:002473 days ago1558078260IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0008653519
Claim Admin77763742019-05-17 7:28:262473 days ago1558078106IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0003739919
Set Internal Inv...76118272019-04-21 15:34:482499 days ago1555860888IN
0x5D154c14...fA4AB7Ff0
0 ETH0.000333399
Transfer Admin75662642019-04-14 13:10:432506 days ago1555247443IN
0x5D154c14...fA4AB7Ff0
0 ETH0.00040999
Set Internal Inv...75354742019-04-09 18:17:272511 days ago1554833847IN
0x5D154c14...fA4AB7Ff0
0 ETH0.0003704410
Set Fee75286632019-04-08 16:49:412512 days ago1554742181IN
0x5D154c14...fA4AB7Ff0
0 ETH0.000284110
Set Internal Inv...75273692019-04-08 12:12:402512 days ago1554725560IN
0x5D154c14...fA4AB7Ff0
0 ETH0.000185225
Set Internal Act...75273642019-04-08 12:11:312512 days ago1554725491IN
0x5D154c14...fA4AB7Ff0
0 ETH0.00018295
Set Internal Act...75273482019-04-08 12:05:552512 days ago1554725155IN
0x5D154c14...fA4AB7Ff0
0 ETH0.00018295
Set Internal Inv...75273362019-04-08 12:02:592512 days ago1554724979IN
0x5D154c14...fA4AB7Ff0
0 ETH0.000185545
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-109048872020-09-21 9:18:531980 days ago1600679933
0x5D154c14...fA4AB7Ff0
4.38036699 ETH
-90493612019-12-04 12:52:592272 days ago1575463979
0x5D154c14...fA4AB7Ff0
0.94275565 ETH
-90493612019-12-04 12:52:592272 days ago1575463979
0x5D154c14...fA4AB7Ff0
0.94284993 ETH
-90493612019-12-04 12:52:592272 days ago1575463979
0x5D154c14...fA4AB7Ff0
2.36440677 ETH
-90493612019-12-04 12:52:592272 days ago1575463979
0x5D154c14...fA4AB7Ff0
2.36464324 ETH
-90492622019-12-04 12:27:122272 days ago1575462432
0x5D154c14...fA4AB7Ff0
0.9999 ETH
-90492622019-12-04 12:27:122272 days ago1575462432
0x5D154c14...fA4AB7Ff0
1 ETH
-90492252019-12-04 12:19:402272 days ago1575461980
0x5D154c14...fA4AB7Ff0
1.01987795 ETH
-90492252019-12-04 12:19:402272 days ago1575461980
0x5D154c14...fA4AB7Ff0
1.01997995 ETH
-90491822019-12-04 12:06:252272 days ago1575461185
0x5D154c14...fA4AB7Ff0
3.69963 ETH
-90491822019-12-04 12:06:252272 days ago1575461185
0x5D154c14...fA4AB7Ff0
3.7 ETH
-90491372019-12-04 11:55:152272 days ago1575460515
0x5D154c14...fA4AB7Ff0
0.06428406 ETH
-90491372019-12-04 11:55:152272 days ago1575460515
0x5D154c14...fA4AB7Ff0
0.06429048 ETH
-90490352019-12-04 11:27:242272 days ago1575458844
0x5D154c14...fA4AB7Ff0
3.40725645 ETH
-90490352019-12-04 11:27:242272 days ago1575458844
0x5D154c14...fA4AB7Ff0
3.40759721 ETH
-90489802019-12-04 11:08:572272 days ago1575457737
0x5D154c14...fA4AB7Ff0
12.28300055 ETH
-90489802019-12-04 11:08:572272 days ago1575457737
0x5D154c14...fA4AB7Ff0
12.28422897 ETH
-90488822019-12-04 10:41:522272 days ago1575456112
0x5D154c14...fA4AB7Ff0
3.09511576 ETH
-90488822019-12-04 10:41:522272 days ago1575456112
0x5D154c14...fA4AB7Ff0
3.0954253 ETH
-90488772019-12-04 10:40:422272 days ago1575456042
0x5D154c14...fA4AB7Ff0
3.09089308 ETH
-90488772019-12-04 10:40:422272 days ago1575456042
0x5D154c14...fA4AB7Ff0
3.0912022 ETH
-90488262019-12-04 10:26:522272 days ago1575455212
0x5D154c14...fA4AB7Ff0
0.08590677 ETH
-90488262019-12-04 10:26:522272 days ago1575455212
0x5D154c14...fA4AB7Ff0
0.08591537 ETH
-90487672019-12-04 10:10:162272 days ago1575454216
0x5D154c14...fA4AB7Ff0
2.05525111 ETH
-90487672019-12-04 10:10:162272 days ago1575454216
0x5D154c14...fA4AB7Ff0
2.05545666 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
KyberUniswapReserve

Compiler Version
v0.4.18+commit.9cf6e910

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
/**
 *Submitted for verification at Etherscan.io on 2019-03-14
*/

pragma solidity 0.4.18;

// File: contracts/ERC20Interface.sol

// https://github.com/ethereum/EIPs/issues/20
interface ERC20 {
    function totalSupply() public view returns (uint supply);
    function balanceOf(address _owner) public view returns (uint balance);
    function transfer(address _to, uint _value) public returns (bool success);
    function transferFrom(address _from, address _to, uint _value) public returns (bool success);
    function approve(address _spender, uint _value) public returns (bool success);
    function allowance(address _owner, address _spender) public view returns (uint remaining);
    function decimals() public view returns(uint digits);
    event Approval(address indexed _owner, address indexed _spender, uint _value);
}

// File: contracts/KyberReserveInterface.sol

/// @title Kyber Reserve contract
interface KyberReserveInterface {

    function trade(
        ERC20 srcToken,
        uint srcAmount,
        ERC20 destToken,
        address destAddress,
        uint conversionRate,
        bool validate
    )
        public
        payable
        returns(bool);

    function getConversionRate(ERC20 src, ERC20 dest, uint srcQty, uint blockNumber) public view returns(uint);
}

// File: contracts/Utils.sol

/// @title Kyber constants contract
contract Utils {

    ERC20 constant internal ETH_TOKEN_ADDRESS = ERC20(0x00eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee);
    uint  constant internal PRECISION = (10**18);
    uint  constant internal MAX_QTY   = (10**28); // 10B tokens
    uint  constant internal MAX_RATE  = (PRECISION * 10**6); // up to 1M tokens per ETH
    uint  constant internal MAX_DECIMALS = 18;
    uint  constant internal ETH_DECIMALS = 18;
    mapping(address=>uint) internal decimals;

    function setDecimals(ERC20 token) internal {
        if (token == ETH_TOKEN_ADDRESS) decimals[token] = ETH_DECIMALS;
        else decimals[token] = token.decimals();
    }

    function getDecimals(ERC20 token) internal view returns(uint) {
        if (token == ETH_TOKEN_ADDRESS) return ETH_DECIMALS; // save storage access
        uint tokenDecimals = decimals[token];
        // technically, there might be token with decimals 0
        // moreover, very possible that old tokens have decimals 0
        // these tokens will just have higher gas fees.
        if(tokenDecimals == 0) return token.decimals();

        return tokenDecimals;
    }

    function calcDstQty(uint srcQty, uint srcDecimals, uint dstDecimals, uint rate) internal pure returns(uint) {
        require(srcQty <= MAX_QTY);
        require(rate <= MAX_RATE);

        if (dstDecimals >= srcDecimals) {
            require((dstDecimals - srcDecimals) <= MAX_DECIMALS);
            return (srcQty * rate * (10**(dstDecimals - srcDecimals))) / PRECISION;
        } else {
            require((srcDecimals - dstDecimals) <= MAX_DECIMALS);
            return (srcQty * rate) / (PRECISION * (10**(srcDecimals - dstDecimals)));
        }
    }

    function calcSrcQty(uint dstQty, uint srcDecimals, uint dstDecimals, uint rate) internal pure returns(uint) {
        require(dstQty <= MAX_QTY);
        require(rate <= MAX_RATE);
        
        //source quantity is rounded up. to avoid dest quantity being too low.
        uint numerator;
        uint denominator;
        if (srcDecimals >= dstDecimals) {
            require((srcDecimals - dstDecimals) <= MAX_DECIMALS);
            numerator = (PRECISION * dstQty * (10**(srcDecimals - dstDecimals)));
            denominator = rate;
        } else {
            require((dstDecimals - srcDecimals) <= MAX_DECIMALS);
            numerator = (PRECISION * dstQty);
            denominator = (rate * (10**(dstDecimals - srcDecimals)));
        }
        return (numerator + denominator - 1) / denominator; //avoid rounding down errors
    }
}

// File: contracts/Utils2.sol

contract Utils2 is Utils {

    /// @dev get the balance of a user.
    /// @param token The token type
    /// @return The balance
    function getBalance(ERC20 token, address user) public view returns(uint) {
        if (token == ETH_TOKEN_ADDRESS)
            return user.balance;
        else
            return token.balanceOf(user);
    }

    function getDecimalsSafe(ERC20 token) internal returns(uint) {

        if (decimals[token] == 0) {
            setDecimals(token);
        }

        return decimals[token];
    }

    function calcDestAmount(ERC20 src, ERC20 dest, uint srcAmount, uint rate) internal view returns(uint) {
        return calcDstQty(srcAmount, getDecimals(src), getDecimals(dest), rate);
    }

    function calcSrcAmount(ERC20 src, ERC20 dest, uint destAmount, uint rate) internal view returns(uint) {
        return calcSrcQty(destAmount, getDecimals(src), getDecimals(dest), rate);
    }

    function calcRateFromQty(uint srcAmount, uint destAmount, uint srcDecimals, uint dstDecimals)
        internal pure returns(uint)
    {
        require(srcAmount <= MAX_QTY);
        require(destAmount <= MAX_QTY);

        if (dstDecimals >= srcDecimals) {
            require((dstDecimals - srcDecimals) <= MAX_DECIMALS);
            return (destAmount * PRECISION / ((10 ** (dstDecimals - srcDecimals)) * srcAmount));
        } else {
            require((srcDecimals - dstDecimals) <= MAX_DECIMALS);
            return (destAmount * PRECISION * (10 ** (srcDecimals - dstDecimals)) / srcAmount);
        }
    }
}

// File: contracts/PermissionGroups.sol

contract PermissionGroups {

    address public admin;
    address public pendingAdmin;
    mapping(address=>bool) internal operators;
    mapping(address=>bool) internal alerters;
    address[] internal operatorsGroup;
    address[] internal alertersGroup;
    uint constant internal MAX_GROUP_SIZE = 50;

    function PermissionGroups() public {
        admin = msg.sender;
    }

    modifier onlyAdmin() {
        require(msg.sender == admin);
        _;
    }

    modifier onlyOperator() {
        require(operators[msg.sender]);
        _;
    }

    modifier onlyAlerter() {
        require(alerters[msg.sender]);
        _;
    }

    function getOperators () external view returns(address[]) {
        return operatorsGroup;
    }

    function getAlerters () external view returns(address[]) {
        return alertersGroup;
    }

    event TransferAdminPending(address pendingAdmin);

    /**
     * @dev Allows the current admin to set the pendingAdmin address.
     * @param newAdmin The address to transfer ownership to.
     */
    function transferAdmin(address newAdmin) public onlyAdmin {
        require(newAdmin != address(0));
        TransferAdminPending(pendingAdmin);
        pendingAdmin = newAdmin;
    }

    /**
     * @dev Allows the current admin to set the admin in one tx. Useful initial deployment.
     * @param newAdmin The address to transfer ownership to.
     */
    function transferAdminQuickly(address newAdmin) public onlyAdmin {
        require(newAdmin != address(0));
        TransferAdminPending(newAdmin);
        AdminClaimed(newAdmin, admin);
        admin = newAdmin;
    }

    event AdminClaimed( address newAdmin, address previousAdmin);

    /**
     * @dev Allows the pendingAdmin address to finalize the change admin process.
     */
    function claimAdmin() public {
        require(pendingAdmin == msg.sender);
        AdminClaimed(pendingAdmin, admin);
        admin = pendingAdmin;
        pendingAdmin = address(0);
    }

    event AlerterAdded (address newAlerter, bool isAdd);

    function addAlerter(address newAlerter) public onlyAdmin {
        require(!alerters[newAlerter]); // prevent duplicates.
        require(alertersGroup.length < MAX_GROUP_SIZE);

        AlerterAdded(newAlerter, true);
        alerters[newAlerter] = true;
        alertersGroup.push(newAlerter);
    }

    function removeAlerter (address alerter) public onlyAdmin {
        require(alerters[alerter]);
        alerters[alerter] = false;

        for (uint i = 0; i < alertersGroup.length; ++i) {
            if (alertersGroup[i] == alerter) {
                alertersGroup[i] = alertersGroup[alertersGroup.length - 1];
                alertersGroup.length--;
                AlerterAdded(alerter, false);
                break;
            }
        }
    }

    event OperatorAdded(address newOperator, bool isAdd);

    function addOperator(address newOperator) public onlyAdmin {
        require(!operators[newOperator]); // prevent duplicates.
        require(operatorsGroup.length < MAX_GROUP_SIZE);

        OperatorAdded(newOperator, true);
        operators[newOperator] = true;
        operatorsGroup.push(newOperator);
    }

    function removeOperator (address operator) public onlyAdmin {
        require(operators[operator]);
        operators[operator] = false;

        for (uint i = 0; i < operatorsGroup.length; ++i) {
            if (operatorsGroup[i] == operator) {
                operatorsGroup[i] = operatorsGroup[operatorsGroup.length - 1];
                operatorsGroup.length -= 1;
                OperatorAdded(operator, false);
                break;
            }
        }
    }
}

// File: contracts/Withdrawable.sol

/**
 * @title Contracts that should be able to recover tokens or ethers
 * @author Ilan Doron
 * @dev This allows to recover any tokens or Ethers received in a contract.
 * This will prevent any accidental loss of tokens.
 */
contract Withdrawable is PermissionGroups {

    event TokenWithdraw(ERC20 token, uint amount, address sendTo);

    /**
     * @dev Withdraw all ERC20 compatible tokens
     * @param token ERC20 The address of the token contract
     */
    function withdrawToken(ERC20 token, uint amount, address sendTo) external onlyAdmin {
        require(token.transfer(sendTo, amount));
        TokenWithdraw(token, amount, sendTo);
    }

    event EtherWithdraw(uint amount, address sendTo);

    /**
     * @dev Withdraw Ethers
     */
    function withdrawEther(uint amount, address sendTo) external onlyAdmin {
        sendTo.transfer(amount);
        EtherWithdraw(amount, sendTo);
    }
}

// File: contracts/uniswap/KyberUniswapReserve.sol

interface UniswapExchange {
    function ethToTokenSwapInput(
        uint256 min_tokens,
        uint256 deadline
    )
        external
        payable
        returns (uint256  tokens_bought);

    function tokenToEthSwapInput(
        uint256 tokens_sold,
        uint256 min_eth,
        uint256 deadline
    )
        external
        returns (uint256  eth_bought);

    function getEthToTokenInputPrice(
        uint256 eth_sold
    )
        external
        view
        returns (uint256 tokens_bought);

    function getTokenToEthInputPrice(
        uint256 tokens_sold
    )
        external
        view
        returns (uint256 eth_bought);
}


interface UniswapFactory {
    function getExchange(address token) external view returns (address exchange);
}


/*
 * A reserve that connects to Uniswap.
 *
 * This reserve makes use of an internal inventory for locally filling orders
 * using the reserve's inventory when certain conditions are met.
 * Conditions are:
 * - After trading the inventory will remain within defined limits.
 * - Uniswap prices do not display internal arbitrage.
 * - Uniswap ask and bid prices meet minimum spread requirements.
 *
 * An additional premium may be added to the converted price for optional
 * promotions.
 */
contract KyberUniswapReserve is KyberReserveInterface, Withdrawable, Utils2 {
    // Parts per 10000
    uint public constant DEFAULT_FEE_BPS = 25;

    UniswapFactory public uniswapFactory;
    address public kyberNetwork;

    uint public feeBps = DEFAULT_FEE_BPS;

    // Uniswap exchange contract for every listed token
    // token -> exchange
    mapping (address => address) public tokenExchange;

    // Internal inventory balance limits
    // token -> limit
    mapping (address => uint) public internalInventoryMin;
    mapping (address => uint) public internalInventoryMax;

    // Minimum spread in BPS required for using internal inventory
    // token -> limit
    mapping (address => uint) public internalActivationMinSpreadBps;

    // Premium BPS added to internal price (making it better).
    // token -> limit
    mapping (address => uint) public internalPricePremiumBps;

    bool public tradeEnabled = true;

    /**
        Constructor
    */
    function KyberUniswapReserve(
        UniswapFactory _uniswapFactory,
        address _admin,
        address _kyberNetwork
    )
        public
    {
        require(address(_uniswapFactory) != 0);
        require(_admin != 0);
        require(_kyberNetwork != 0);

        uniswapFactory = _uniswapFactory;
        admin = _admin;
        kyberNetwork = _kyberNetwork;
    }

    function() public payable {
        // anyone can deposit ether
    }

    /**
        Returns dest quantity / source quantity.
        Last bit of the rate indicates whether to use internal inventory:
          0 - use uniswap
          1 - use internal inventory
    */
    function getConversionRate(
        ERC20 src,
        ERC20 dest,
        uint srcQty,
        uint blockNumber
    )
        public
        view
        returns(uint)
    {
        // This makes the UNUSED warning go away.
        blockNumber;
        if (!isValidTokens(src, dest)) return 0;
        if (!tradeEnabled) return 0;
        if (srcQty == 0) return 0;

        ERC20 token;
        if (src == ETH_TOKEN_ADDRESS) {
            token = dest;
        } else if (dest == ETH_TOKEN_ADDRESS) {
            token = src;
        } else {
            // Should never arrive here - isValidTokens requires one side to be ETH
            revert();
        }

        uint convertedQuantity;
        uint rateSrcDest;
        uint rateDestSrc;
        (convertedQuantity, rateSrcDest) = calcUniswapConversion(src, dest, srcQty);
        (, rateDestSrc) = calcUniswapConversion(dest, src, convertedQuantity);

        uint quantityWithPremium = addPremium(token, convertedQuantity);

        bool useInternalInventory = shouldUseInternalInventory(
            src, /* srcToken */
            srcQty, /* srcAmount */
            dest, /* destToken */
            quantityWithPremium, /* destAmount */
            rateSrcDest, /* rateSrcDest */
            rateDestSrc /* rateDestSrc */
        );

        uint rate;
        if (useInternalInventory) {
            // If using internal inventory add premium to converted quantity
            rate = calcRateFromQty(
                srcQty, /* srcAmount */
                quantityWithPremium, /* destAmount */
                getDecimals(src), /* srcDecimals */
                getDecimals(dest) /* dstDecimals */
            );
        } else {
            // Use rate calculated from uniswap quantities after fees
            rate = rateSrcDest;
        }
        return applyInternalInventoryHintToRate(rate, useInternalInventory);
    }

    function applyInternalInventoryHintToRate(
        uint rate,
        bool useInternalInventory
    )
        internal
        pure
        returns(uint)
    {
        return rate % 2 == (useInternalInventory ? 1 : 0)
            ? rate
            : rate - 1;
    }


    event TradeExecute(
        address indexed sender,
        address src,
        uint srcAmount,
        address destToken,
        uint destAmount,
        address destAddress,
        bool useInternalInventory
    );

    /**
      conversionRate: expected conversion rate should be >= this value.
     */
    function trade(
        ERC20 srcToken,
        uint srcAmount,
        ERC20 destToken,
        address destAddress,
        uint conversionRate,
        bool validate
    )
        public
        payable
        returns(bool)
    {
        require(tradeEnabled);
        require(msg.sender == kyberNetwork);
        require(isValidTokens(srcToken, destToken));

        if (validate) {
            require(conversionRate > 0);
            if (srcToken == ETH_TOKEN_ADDRESS)
                require(msg.value == srcAmount);
            else
                require(msg.value == 0);
        }

        // Making sure srcAmount has been transfered to the reserve.
        // If srcToken is ETH the value has already been transfered by calling
        // the function.
        if (srcToken != ETH_TOKEN_ADDRESS)
            require(srcToken.transferFrom(msg.sender, address(this), srcAmount));

        uint expectedDestAmount = calcDestAmount(
            srcToken, /* src */
            destToken, /* dest */
            srcAmount, /* srcAmount */
            conversionRate /* rate */
        );

        bool useInternalInventory = conversionRate % 2 == 1;

        uint destAmount;
        UniswapExchange exchange;
        if (srcToken == ETH_TOKEN_ADDRESS) {
            if (!useInternalInventory) {
                // Deduct fees (in ETH) before converting
                uint quantity = deductFee(srcAmount);
                exchange = UniswapExchange(tokenExchange[address(destToken)]);
                destAmount = exchange.ethToTokenSwapInput.value(quantity)(
                    1, /* min_tokens: uniswap requires it to be > 0 */
                    2 ** 255 /* deadline */
                );
                require(destAmount >= expectedDestAmount);
            }

            // Transfer user-expected dest amount
            require(destToken.transfer(destAddress, expectedDestAmount));
        } else {
            if (!useInternalInventory) {
                exchange = UniswapExchange(tokenExchange[address(srcToken)]);
                destAmount = exchange.tokenToEthSwapInput(
                    srcAmount,
                    1, /* min_eth: uniswap requires it to be > 0 */
                    2 ** 255 /* deadline */
                );
                // Deduct fees (in ETH) after converting
                destAmount = deductFee(destAmount);
                require(destAmount >= expectedDestAmount);
            }

            // Transfer user-expected dest amount
            destAddress.transfer(expectedDestAmount);
        }

        TradeExecute(
            msg.sender, /* sender */
            srcToken, /* src */
            srcAmount, /* srcAmount */
            destToken, /* destToken */
            expectedDestAmount, /* destAmount */
            destAddress, /* destAddress */
            useInternalInventory /* useInternalInventory */
        );
        return true;
    }

    event FeeUpdated(
        uint bps
    );

    function setFee(
        uint bps
    )
        public
        onlyAdmin
    {
        require(bps <= 10000);

        feeBps = bps;

        FeeUpdated(bps);
    }

    event InternalActivationConfigUpdated(
        ERC20 token,
        uint minSpreadBps,
        uint premiumBps
    );

    function setInternalActivationConfig(
        ERC20 token,
        uint minSpreadBps,
        uint premiumBps
    )
        public
        onlyAdmin
    {
        require(tokenExchange[address(token)] != address(0));
        require(minSpreadBps <= 1000); // min spread <= 10%
        require(premiumBps <= 500); // premium <= 5%

        internalActivationMinSpreadBps[address(token)] = minSpreadBps;
        internalPricePremiumBps[address(token)] = premiumBps;

        InternalActivationConfigUpdated(token, minSpreadBps, premiumBps);
    }

    event InternalInventoryLimitsUpdated(
        ERC20 token,
        uint minBalance,
        uint maxBalance
    );

    function setInternalInventoryLimits(
        ERC20 token,
        uint minBalance,
        uint maxBalance
    )
        public
        onlyOperator
    {
        require(tokenExchange[address(token)] != address(0));

        internalInventoryMin[address(token)] = minBalance;
        internalInventoryMax[address(token)] = maxBalance;

        InternalInventoryLimitsUpdated(token, minBalance, maxBalance);
    }

    event TokenListed(
        ERC20 token,
        UniswapExchange exchange
    );

    function listToken(ERC20 token)
        public
        onlyAdmin
    {
        require(address(token) != 0);

        UniswapExchange uniswapExchange = UniswapExchange(
            uniswapFactory.getExchange(token)
        );
        tokenExchange[address(token)] = address(uniswapExchange);
        setDecimals(token);

        require(token.approve(uniswapExchange, 2 ** 255));

        // internal inventory disabled by default
        internalInventoryMin[address(token)] = 2 ** 255;
        internalInventoryMax[address(token)] = 0;
        internalActivationMinSpreadBps[address(token)] = 0;
        internalPricePremiumBps[address(token)] = 0;

        TokenListed(token, uniswapExchange);
    }

    event TokenDelisted(ERC20 token);

    function delistToken(ERC20 token)
        public
        onlyAdmin
    {
        require(tokenExchange[address(token)] != address(0));

        delete tokenExchange[address(token)];
        delete internalInventoryMin[address(token)];
        delete internalInventoryMax[address(token)];
        delete internalActivationMinSpreadBps[address(token)];
        delete internalPricePremiumBps[address(token)];

        TokenDelisted(token);
    }

    function isValidTokens(
        ERC20 src,
        ERC20 dest
    )
        public
        view
        returns(bool)
    {
        return (
            (
                src == ETH_TOKEN_ADDRESS &&
                tokenExchange[address(dest)] != address(0)
            ) ||
            (
                tokenExchange[address(src)] != address(0) &&
                dest == ETH_TOKEN_ADDRESS
            )
        );
    }

    event TradeEnabled(
        bool enable
    );

    function enableTrade()
        public
        onlyAdmin
        returns(bool)
    {
        tradeEnabled = true;
        TradeEnabled(true);
        return true;
    }

    function disableTrade()
        public
        onlyAlerter
        returns(bool)
    {
        tradeEnabled = false;
        TradeEnabled(false);
        return true;
    }

    event KyberNetworkSet(
        address kyberNetwork
    );

    function setKyberNetwork(
        address _kyberNetwork
    )
        public
        onlyAdmin
    {
        require(_kyberNetwork != 0);
        kyberNetwork = _kyberNetwork;
        KyberNetworkSet(kyberNetwork);
    }

    /*
     * Uses amounts and rates to check if the reserve's internal inventory can
     * be used directly.
     *
     * rateEthToToken and rateTokenToEth are in kyber rate format meaning
     * rate as numerator and 1e18 as denominator.
     */
    function shouldUseInternalInventory(
        ERC20 srcToken,
        uint srcAmount,
        ERC20 destToken,
        uint destAmount,
        uint rateSrcDest,
        uint rateDestSrc
    )
        public
        view
        returns(bool)
    {
        require(srcAmount < MAX_QTY);
        require(destAmount < MAX_QTY);

        // Check for internal inventory balance limitations
        ERC20 token;
        if (srcToken == ETH_TOKEN_ADDRESS) {
            token = destToken;
            uint tokenBalance = token.balanceOf(this);
            if (
                tokenBalance < destAmount ||
                tokenBalance - destAmount < internalInventoryMin[token]
            ) {
                return false;
            }
        } else {
            token = srcToken;
            if (this.balance < destAmount) return false;
            if (token.balanceOf(this) + srcAmount > internalInventoryMax[token]) {
                return false;
            }
        }

        uint normalizedDestSrc = 10 ** 36 / rateDestSrc;

        // Check for arbitrage
        if (rateSrcDest > normalizedDestSrc) return false;

        uint activationSpread = internalActivationMinSpreadBps[token];
        uint spread = uint(calculateSpreadBps(normalizedDestSrc, rateSrcDest));
        return spread >= activationSpread;
    }

    /*
     * Spread calculation is (ask - bid) / ((ask + bid) / 2).
     * We multiply by 10000 to get result in BPS.
     *
     * Note: if askRate > bidRate result will be negative indicating
     * internal arbitrage.
     */
    function calculateSpreadBps(
        uint _askRate,
        uint _bidRate
    )
        public
        pure
        returns(int)
    {
        int askRate = int(_askRate);
        int bidRate = int(_bidRate);
        return 10000 * 2 * (askRate - bidRate) / (askRate + bidRate);
    }

    function deductFee(
        uint amount
    )
        public
        view
        returns(uint)
    {
        return amount * (10000 - feeBps) / 10000;
    }

    function addPremium(
        ERC20 token,
        uint amount
    )
        public
        view
        returns(uint)
    {
        require(amount <= MAX_QTY);
        return amount * (10000 + internalPricePremiumBps[token]) / 10000;
    }

    function calcUniswapConversion(
        ERC20 src,
        ERC20 dest,
        uint srcQty
    )
        internal
        view
        returns(uint destQty, uint rate)
    {
        UniswapExchange exchange;
        if (src == ETH_TOKEN_ADDRESS) {
            exchange = UniswapExchange(tokenExchange[address(dest)]);
            destQty = exchange.getEthToTokenInputPrice(
                deductFee(srcQty)
            );
        } else {
            exchange = UniswapExchange(tokenExchange[address(src)]);
            destQty = deductFee(
                exchange.getTokenToEthInputPrice(srcQty)
            );
        }

        rate = calcRateFromQty(
            srcQty, /* srcAmount */
            destQty, /* destAmount */
            getDecimals(src), /* srcDecimals */
            getDecimals(dest) /* dstDecimals */
        );
    }
}

Contract Security Audit

Contract ABI

API
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":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newOperator","type":"address"}],"name":"addOperator","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"internalInventoryMax","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"token","type":"address"},{"name":"minBalance","type":"uint256"},{"name":"maxBalance","type":"uint256"}],"name":"setInternalInventoryLimits","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"amount","type":"uint256"}],"name":"deductFee","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"token","type":"address"}],"name":"delistToken","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"operator","type":"address"}],"name":"removeOperator","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"kyberNetwork","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_askRate","type":"uint256"},{"name":"_bidRate","type":"uint256"}],"name":"calculateSpreadBps","outputs":[{"name":"","type":"int256"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"internalActivationMinSpreadBps","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"amount","type":"uint256"},{"name":"sendTo","type":"address"}],"name":"withdrawEther","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"token","type":"address"},{"name":"user","type":"address"}],"name":"getBalance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"tradeEnabled","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"admin","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_uniswapFactory","type":"address"},{"name":"_admin","type":"address"},{"name":"_kyberNetwork","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"sender","type":"address"},{"indexed":false,"name":"src","type":"address"},{"indexed":false,"name":"srcAmount","type":"uint256"},{"indexed":false,"name":"destToken","type":"address"},{"indexed":false,"name":"destAmount","type":"uint256"},{"indexed":false,"name":"destAddress","type":"address"},{"indexed":false,"name":"useInternalInventory","type":"bool"}],"name":"TradeExecute","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"bps","type":"uint256"}],"name":"FeeUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"token","type":"address"},{"indexed":false,"name":"minSpreadBps","type":"uint256"},{"indexed":false,"name":"premiumBps","type":"uint256"}],"name":"InternalActivationConfigUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"token","type":"address"},{"indexed":false,"name":"minBalance","type":"uint256"},{"indexed":false,"name":"maxBalance","type":"uint256"}],"name":"InternalInventoryLimitsUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"token","type":"address"},{"indexed":false,"name":"exchange","type":"address"}],"name":"TokenListed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"token","type":"address"}],"name":"TokenDelisted","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"enable","type":"bool"}],"name":"TradeEnabled","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"kyberNetwork","type":"address"}],"name":"KyberNetworkSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"token","type":"address"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"sendTo","type":"address"}],"name":"TokenWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"sendTo","type":"address"}],"name":"EtherWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"pendingAdmin","type":"address"}],"name":"TransferAdminPending","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"newAdmin","type":"address"},{"indexed":false,"name":"previousAdmin","type"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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000c0a47dfe034b400b47bdad5fecda2621de6c4d950000000000000000000000002259099897afaf3813fef3284b91d2b227b66ad400000000000000000000000065897adcba42dcca5dd162c647b1cc3e31238490

-----Decoded View---------------
Arg [0] : _uniswapFactory (address): 0xc0a47dFe034B400B47bDaD5FecDa2621de6c4d95
Arg [1] : _admin (address): 0x2259099897AfAf3813fef3284b91D2B227b66AD4
Arg [2] : _kyberNetwork (address): 0x65897aDCBa42dcCA5DD162c647b1cC3E31238490

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000c0a47dfe034b400b47bdad5fecda2621de6c4d95
Arg [1] : 0000000000000000000000002259099897afaf3813fef3284b91d2b227b66ad4
Arg [2] : 00000000000000000000000065897adcba42dcca5dd162c647b1cc3e31238490


Swarm Source

bzzr://97c6f513921c5857a9e8ad9ef611d7455188933278080fe4e9b76d21b0be451b

Block Uncle Number Difficulty Gas Used Reward
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0x5D154c145Db2ca90B8aB5e8Fe3E716AfA4AB7Ff0
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.