ETH Price: $3,406.51 (+3.17%)

Contract

0x545a25cBbCB63A5b6b65AF7896172629CA763645
 
Transaction Hash
Method
Block
From
To
Claim206570602024-09-01 16:57:11113 days ago1725209831IN
0x545a25cB...9CA763645
0 ETH0.000086230.78005383
Claim206570322024-09-01 16:51:35113 days ago1725209495IN
0x545a25cB...9CA763645
0 ETH0.000034150.85293885
Transfer206569532024-09-01 16:35:47113 days ago1725208547IN
0x545a25cB...9CA763645
0.028655 ETH0.000048352.17618774
Transfer206568902024-09-01 16:23:11113 days ago1725207791IN
0x545a25cB...9CA763645
0.0112811 ETH0.000052332.3556006
Claim205097742024-08-12 3:13:23134 days ago1723432403IN
0x545a25cB...9CA763645
0 ETH0.000087890.94049402
Claim202229782024-07-03 2:23:59174 days ago1719973439IN
0x545a25cB...9CA763645
0 ETH0.000332933.56247597
Claim202229712024-07-03 2:22:35174 days ago1719973355IN
0x545a25cB...9CA763645
0 ETH0.000328233.51271076
Claim202198012024-07-02 15:43:47174 days ago1719935027IN
0x545a25cB...9CA763645
0 ETH0.00030287.56115361
Claim202197662024-07-02 15:36:47174 days ago1719934607IN
0x545a25cB...9CA763645
0 ETH0.000774338.28566263
Claim202197632024-07-02 15:36:11174 days ago1719934571IN
0x545a25cB...9CA763645
0 ETH0.000749818.02425867
Claim202197512024-07-02 15:33:35174 days ago1719934415IN
0x545a25cB...9CA763645
0 ETH0.000290947.26499886
Claim202197512024-07-02 15:33:35174 days ago1719934415IN
0x545a25cB...9CA763645
0 ETH0.000666087.12728074
Claim202197442024-07-02 15:32:11174 days ago1719934331IN
0x545a25cB...9CA763645
0 ETH0.000667127.13850006
Claim202197312024-07-02 15:29:35174 days ago1719934175IN
0x545a25cB...9CA763645
0 ETH0.000678957.26499886
Claim202197232024-07-02 15:27:59174 days ago1719934079IN
0x545a25cB...9CA763645
0 ETH0.000678957.26499886
Claim202168462024-07-02 5:48:47175 days ago1719899327IN
0x545a25cB...9CA763645
0 ETH0.000300643.21743732
Claim202006422024-06-29 23:31:59177 days ago1719703919IN
0x545a25cB...9CA763645
0 ETH0.00013231.41585847
Claim201432002024-06-21 22:53:35185 days ago1719010415IN
0x545a25cB...9CA763645
0 ETH0.00027682.96188689
Claim201402802024-06-21 13:04:59185 days ago1718975099IN
0x545a25cB...9CA763645
0 ETH0.000652016.97771901
Claim197850272024-05-02 21:10:23235 days ago1714684223IN
0x545a25cB...9CA763645
0 ETH0.000723716.54623013
Claim197647992024-04-30 1:20:11238 days ago1714440011IN
0x545a25cB...9CA763645
0 ETH0.000603916.46290862
Claim197177062024-04-23 11:10:11244 days ago1713870611IN
0x545a25cB...9CA763645
0 ETH0.0010658111.40606439
Claim191488142024-02-03 15:47:23324 days ago1706975243IN
0x545a25cB...9CA763645
0 ETH0.001962321
Claim191488072024-02-03 15:45:59324 days ago1706975159IN
0x545a25cB...9CA763645
0 ETH0.0006805917
Claim190025882024-01-14 3:57:35345 days ago1705204655IN
0x545a25cB...9CA763645
0 ETH0.0016012917.13438172
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Contract Source Code Verified (Exact Match)

Contract Name:
KineExchangeTreasury

Compiler Version
v0.5.16+commit.9c3226ce

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 7 : KineExchangeTreasury.sol
pragma solidity ^0.5.16;

import "./Ownable.sol";
import "./KineSafeMath.sol";
import "./IERC20.sol";
import "./SafeERC20.sol";

pragma experimental ABIEncoderV2;

contract KineExchangeTreasury is Ownable {
    using KineSafeMath for uint;
    using SafeERC20 for IERC20;

    event ReceiveEther(uint amount);
    event Claimed(uint256 indexed id, address indexed to, bool isETH, address currency, uint256 amount, uint256 deadline);
    event TransferToCounterParty(bool isETH, address currency, uint256 amount);
    event Paused();
    event Unpaused();
    event NewTruthHolder(address oldTruthHolder, address newTruthHolder);
    event NewOperator(address oldOperator, address newOperator);
    event NewCounterParty(address oldCounterParty, address newCounterParty);
    event AddCurrency(address indexed currency);
    event RemoveCurrency(address indexed currency);

    bool public paused;
    address public truthHolder;
    address public operator;
    address payable public counterParty;
    mapping(address => bool) public supportCurrency;
    mapping(uint => uint) public claimHistory;

    modifier notPaused() {
        require(!paused, "paused");
        _;
    }

    modifier onlyOperator() {
        require(msg.sender == operator, "only operator can call");
        _;
    }

    constructor (address truthHolder_, address operator_, address payable counterParty_) public {
        paused = false;
        truthHolder = truthHolder_;
        operator = operator_;
        counterParty = counterParty_;
    }

    function() external payable {
        if (msg.value > 0) {
            emit ReceiveEther(msg.value);
        }
    }

    function _transfer(address payable to, bool isETH, address currency, uint amount) internal {
        if(isETH) {
            require(address(this).balance >= amount, "not enough ether balance");
            require(to.send(amount), "ether transfer failed");
        } else {
            IERC20 token = IERC20(currency);
            uint balance = token.balanceOf(address(this));
            require(balance >= amount, "not enough currency balance");
            token.safeTransfer(to, amount);
        }
    }

    function transferToCounterParty(bool isETH, address currency, uint amount) external onlyOperator {
        _transfer(counterParty, isETH, currency, amount);
        emit TransferToCounterParty(isETH, currency, amount);
    }

    function claim(bytes calldata message, bytes calldata signature) external notPaused {
        address source = source(message, signature);
        require(source == truthHolder, "only accept truthHolder signed message");

        (uint256 id, address payable to, bool isETH, address currency, uint256 amount, uint256 deadline) = abi.decode(message, (uint256, address, bool, address, uint256, uint256));
        require(claimHistory[id] == 0, "already claimed");
        require(isETH || supportCurrency[currency], "currency not support");
        require(block.timestamp < deadline, "already passed deadline");

        claimHistory[id] = block.number;
        _transfer(to, isETH, currency, amount);
        emit Claimed(id, to, isETH, currency, amount, deadline);
    }

    function source(bytes memory message, bytes memory signature) public pure returns (address) {
        (bytes32 r, bytes32 s, uint8 v) = abi.decode(signature, (bytes32, bytes32, uint8));
        bytes32 hash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", keccak256(message)));
        return ecrecover(hash, v, r, s);
    }

    function _pause() external onlyOwner {
        paused = true;
        emit Paused();
    }

    function _unpause() external onlyOwner {
        paused = false;
        emit Unpaused();
    }

    function _changeTruthHolder(address newTruthHolder) external onlyOwner {
        address oldHolder = truthHolder;
        truthHolder = newTruthHolder;
        emit NewTruthHolder(oldHolder, newTruthHolder);
    }

    function _setOperator(address newOperator) external onlyOwner {
        address oldOperator = operator;
        operator = newOperator;
        emit NewOperator(oldOperator, newOperator);
    }

    function _setCounterParty(address payable newCounterParty) external onlyOwner {
        address payable oldCounterParty = counterParty;
        counterParty = newCounterParty;
        emit NewCounterParty(oldCounterParty, newCounterParty);
    }

    function _addCurrency(address currency) external onlyOwner {
        supportCurrency[currency] = true;
        emit AddCurrency(currency);
    }

    function _removeCurrency(address currency) external onlyOwner {
        delete supportCurrency[currency];
        emit RemoveCurrency(currency);
    }

}

File 2 of 7 : Address.sol
pragma solidity ^0.5.5;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following 
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @dev Converts an `address` into `address payable`. Note that this is
     * simply a type cast: the actual underlying value is not changed.
     *
     * _Available since v2.4.0._
     */
    function toPayable(address account) internal pure returns (address payable) {
        return address(uint160(account));
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     *
     * _Available since v2.4.0._
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-call-value
        (bool success, ) = recipient.call.value(amount)("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
}

File 3 of 7 : Context.sol
pragma solidity ^0.5.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
contract Context {
    // Empty internal constructor, to prevent people from mistakenly deploying
    // an instance of this contract, which should be used via inheritance.
    constructor () internal { }
    // solhint-disable-previous-line no-empty-blocks

    function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

File 4 of 7 : IERC20.sol
pragma solidity ^0.5.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP. Does not include
 * the optional functions; to access them see {ERC20Detailed}.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

File 5 of 7 : KineSafeMath.sol
pragma solidity ^0.5.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */

/**
 * Original work from OpenZeppelin: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v2.5.0/contracts/math/SafeMath.sol
 * changes we made:
 * 1. add two methods that take errorMessage as input parameter
 */

library KineSafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     * - Addition cannot overflow.
     * added by Kine
     */
    function add(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, errorMessage);

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot overflow.
     *
     * _Available since v2.4.0._
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     * - Multiplication cannot overflow.
     * added by Kine
     */
    function mul(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, errorMessage);

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     *
     * _Available since v2.4.0._
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     *
     * _Available since v2.4.0._
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

File 6 of 7 : Ownable.sol
pragma solidity ^0.5.0;

import "./Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(isOwner(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Returns true if the caller is the current owner.
     */
    function isOwner() public view returns (bool) {
        return _msgSender() == _owner;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     */
    function _transferOwnership(address newOwner) internal {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

File 7 of 7 : SafeERC20.sol
pragma solidity ^0.5.0;

import "./IERC20.sol";
import "./KineSafeMath.sol";
import "./Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using KineSafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves.

        // A Solidity high level call has three parts:
        //  1. The target address is checked to verify it contains contract code
        //  2. The call itself is made, and success asserted
        //  3. The return value is decoded, which in turn checks the size of the returned data.
        // solhint-disable-next-line max-line-length
        require(address(token).isContract(), "SafeERC20: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = address(token).call(data);
        require(success, "SafeERC20: low-level call failed");

        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

Settings
{
  "remappings": [],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"truthHolder_","type":"address"},{"internalType":"address","name":"operator_","type":"address"},{"internalType":"address payable","name":"counterParty_","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"currency","type":"address"}],"name":"AddCurrency","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"id","type":"uint256"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"bool","name":"isETH","type":"bool"},{"indexed":false,"internalType":"address","name":"currency","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"Claimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldCounterParty","type":"address"},{"indexed":false,"internalType":"address","name":"newCounterParty","type":"address"}],"name":"NewCounterParty","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldOperator","type":"address"},{"indexed":false,"internalType":"address","name":"newOperator","type":"address"}],"name":"NewOperator","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldTruthHolder","type":"address"},{"indexed":false,"internalType":"address","name":"newTruthHolder","type":"address"}],"name":"NewTruthHolder","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"ReceiveEther","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"currency","type":"address"}],"name":"RemoveCurrency","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bool","name":"isETH","type":"bool"},{"indexed":false,"internalType":"address","name":"currency","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"TransferToCounterParty","type":"event"},{"anonymous":false,"inputs":[],"name":"Unpaused","type":"event"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"constant":false,"inputs":[{"internalType":"address","name":"currency","type":"address"}],"name":"_addCurrency","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newTruthHolder","type":"address"}],"name":"_changeTruthHolder","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"_pause","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"currency","type":"address"}],"name":"_removeCurrency","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address payable","name":"newCounterParty","type":"address"}],"name":"_setCounterParty","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newOperator","type":"address"}],"name":"_setOperator","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"_unpause","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes","name":"message","type":"bytes"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"claim","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"claimHistory","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"counterParty","outputs":[{"internalType":"address payable","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"isOwner","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"operator","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"renounceOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes","name":"message","type":"bytes"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"source","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"supportCurrency","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bool","name":"isETH","type":"bool"},{"internalType":"address","name":"currency","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferToCounterParty","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"truthHolder","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"}]

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

00000000000000000000000017d04113a3651e79e7d40a40e47aae23046f776100000000000000000000000017d04113a3651e79e7d40a40e47aae23046f776100000000000000000000000017d04113a3651e79e7d40a40e47aae23046f7761

-----Decoded View---------------
Arg [0] : truthHolder_ (address): 0x17D04113a3651e79e7d40a40E47aaE23046f7761
Arg [1] : operator_ (address): 0x17D04113a3651e79e7d40a40E47aaE23046f7761
Arg [2] : counterParty_ (address): 0x17D04113a3651e79e7d40a40E47aaE23046f7761

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 00000000000000000000000017d04113a3651e79e7d40a40e47aae23046f7761
Arg [1] : 00000000000000000000000017d04113a3651e79e7d40a40e47aae23046f7761
Arg [2] : 00000000000000000000000017d04113a3651e79e7d40a40e47aae23046f7761


Block Transaction Difficulty Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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Transaction Hash Block Value Eth2 PubKey Valid
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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.