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Contract

0x8E01CC26D6dD73581347c4370573ce9e59e74802
 
Transaction Hash
Method
Block
From
To
Withdraw Signed212789132024-11-27 11:53:235 hrs ago1732708403IN
0x8E01CC26...e59e74802
0 ETH0.0013472412.75982999
Withdraw Signed212788962024-11-27 11:49:595 hrs ago1732708199IN
0x8E01CC26...e59e74802
0 ETH0.0011862611.23567873
Withdraw Signed212787162024-11-27 11:13:356 hrs ago1732706015IN
0x8E01CC26...e59e74802
0 ETH0.0015377614.56488671
Withdraw Signed212781932024-11-27 9:27:597 hrs ago1732699679IN
0x8E01CC26...e59e74802
0 ETH0.000961769.10790386
Withdraw Signed212772872024-11-27 6:26:1110 hrs ago1732688771IN
0x8E01CC26...e59e74802
0 ETH0.000894718.47200201
Withdraw Signed212747782024-11-26 22:01:3519 hrs ago1732658495IN
0x8E01CC26...e59e74802
0 ETH0.000723278.17666495
Withdraw Signed212747742024-11-26 22:00:4719 hrs ago1732658447IN
0x8E01CC26...e59e74802
0 ETH0.000722758.16746639
Withdraw Signed212747392024-11-26 21:53:4719 hrs ago1732658027IN
0x8E01CC26...e59e74802
0 ETH0.000922358.73710592
Withdraw Signed212738142024-11-26 18:48:1122 hrs ago1732646891IN
0x8E01CC26...e59e74802
0 ETH0.0024387417.89025158
Withdraw Signed212691312024-11-26 3:06:4738 hrs ago1732590407IN
0x8E01CC26...e59e74802
0 ETH0.000889058.41932296
Withdraw Signed212681032024-11-25 23:39:5941 hrs ago1732577999IN
0x8E01CC26...e59e74802
0 ETH0.000739267
Withdraw Signed212680692024-11-25 23:32:5941 hrs ago1732577579IN
0x8E01CC26...e59e74802
0 ETH0.000962019.11230351
Withdraw Signed212677212024-11-25 22:22:3542 hrs ago1732573355IN
0x8E01CC26...e59e74802
0 ETH0.000823049.30272738
Withdraw Signed212668572024-11-25 19:28:5945 hrs ago1732562939IN
0x8E01CC26...e59e74802
0 ETH0.001902418.01858952
Withdraw Signed212654372024-11-25 14:41:472 days ago1732545707IN
0x8E01CC26...e59e74802
0 ETH0.0025974124.60694724
Withdraw Signed212651362024-11-25 13:41:352 days ago1732542095IN
0x8E01CC26...e59e74802
0 ETH0.0012770614.4325718
Withdraw Signed212647612024-11-25 12:25:472 days ago1732537547IN
0x8E01CC26...e59e74802
0 ETH0.0013225912.5241262
Withdraw Signed212639082024-11-25 9:34:232 days ago1732527263IN
0x8E01CC26...e59e74802
0 ETH0.0015342314.53409843
Withdraw Signed212637502024-11-25 9:02:232 days ago1732525343IN
0x8E01CC26...e59e74802
0 ETH0.000851488.06668559
Withdraw Signed212630582024-11-25 6:43:472 days ago1732517027IN
0x8E01CC26...e59e74802
0 ETH0.000961829.10738454
Withdraw Signed212628212024-11-25 5:55:592 days ago1732514159IN
0x8E01CC26...e59e74802
0 ETH0.000593086.70533553
Withdraw Signed212616632024-11-25 2:03:592 days ago1732500239IN
0x8E01CC26...e59e74802
0 ETH0.000751358.49018549
Withdraw Signed212616282024-11-25 1:56:472 days ago1732499807IN
0x8E01CC26...e59e74802
0 ETH0.000788877.47233441
Withdraw Signed212611572024-11-25 0:22:232 days ago1732494143IN
0x8E01CC26...e59e74802
0 ETH0.001188299.19662999
Withdraw Signed212606592024-11-24 22:42:352 days ago1732488155IN
0x8E01CC26...e59e74802
0 ETH0.000862428.16710238
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127002382021-06-25 0:58:351251 days ago1624582715  Contract Creation0 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
BridgePool

Compiler Version
v0.8.0+commit.c7dfd78e

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 13 : BridgePool.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <=0.8.0;

import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "../common/signature/SigCheckable.sol";
import "../common/SafeAmount.sol";
import "../common/WithAdmin.sol";
import "../taxing/IGeneralTaxDistributor.sol";

contract BridgePool is SigCheckable, WithAdmin {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;
    event TransferBySignature(address signer,
        address receiver,
        address token,
        uint256 amount,
        uint256 fee);
    event BridgeLiquidityAdded(address actor, address token, uint256 amount);
    event BridgeLiquidityRemoved(address actor, address token, uint256 amount);
    event BridgeSwap(address from,
        address indexed token,
        uint256 targetNetwork,
        address targetToken,
        address targetAddrdess,
        uint256 amount);

    string constant NAME = "FERRUM_TOKEN_BRIDGE_POOL";
    string constant VERSION = "000.003";
    bytes32 constant WITHDRAW_SIGNED_METHOD =
        keccak256("WithdrawSigned(address token,address payee,uint256 amount,bytes32 salt)");
    mapping(address => bool) public signers;
    mapping(address=>mapping(address=>uint256)) private liquidities;
    mapping(address=>uint256) public fees;
	mapping(address=>mapping(uint256=>address)) public allowedTargets;
    address public feeDistributor;

    constructor () EIP712(NAME, VERSION) { }

	/**
	 *************** Owner only operations ***************
	 */

    function addSigner(address _signer) external onlyOwner() {
        require(_signer != address(0), "Bad signer");
        signers[_signer] = true;
    }

    function removeSigner(address _signer) external onlyOwner() {
        require(_signer != address(0), "Bad signer");
        delete signers[_signer];
    }

    function setFeeDistributor(address _feeDistributor) external onlyOwner() {
        feeDistributor = _feeDistributor;
    }

	/**
	 *************** Admin operations ***************
	 */

    function setFee(address token, uint256 fee10000) external onlyAdmin() {
        require(token != address(0), "Bad token");
        fees[token] = fee10000;
    }

	function allowTarget(address token, uint256 chainId, address targetToken) external onlyAdmin() {
		allowedTargets[token][chainId] = targetToken;
	}

	function disallowTarget(address token, uint256 chainId) external onlyAdmin() {
		delete allowedTargets[token][chainId];
	}

	/**
	 *************** Public operations ***************
	 */

    function swap(address token, uint256 amount, uint256 targetNetwork, address targetToken)
    external returns(uint256) {
        return _swap(msg.sender, token, amount, targetNetwork, targetToken, msg.sender);
    }

    function swapToAddress(address token,
        uint256 amount,
        uint256 targetNetwork,
        address targetToken,
        address targetAddress)
    external returns(uint256) {
        require(targetAddress != address(0), "BridgePool: targetAddress is required");
        return _swap(msg.sender, token, amount, targetNetwork, targetToken, targetAddress);
    }

    function _swap(address from, address token, uint256 amount, uint256 targetNetwork,
        address targetToken, address targetAddress) internal returns(uint256) {
		require(targetNetwork != 0, "BP: targetNetwork is requried");
		require(allowedTargets[token][targetNetwork] == targetToken, "BP: target not allowed");
        amount = SafeAmount.safeTransferFrom(token, from, address(this), amount);
        emit BridgeSwap(from, token, targetNetwork, targetToken, targetAddress, amount);
        return amount;
    }

    function withdrawSigned(
            address token,
            address payee,
            uint256 amount,
            bytes32 salt,
            bytes memory signature)
    external returns(uint256) {
        bytes32 message = withdrawSignedMessage(token, payee, amount, salt);
        address _signer = signerUnique(message, signature);
        require(signers[_signer], "BridgePool: Invalid signer");

        uint256 fee = 0;
        address _feeDistributor = feeDistributor;
        if (_feeDistributor != address(0)) {
            fee = amount.mul(fees[token]).div(10000);
            amount = amount.sub(fee);
            if (fee != 0) {
                IERC20(token).safeTransfer(_feeDistributor, fee);
                IGeneralTaxDistributor(_feeDistributor).distributeTax(token, msg.sender);
            }
        }
        IERC20(token).safeTransfer(payee, amount);
        emit TransferBySignature(_signer, payee, token, amount, fee);
        return amount;
    }

    function withdrawSignedVerify(
            address token,
            address payee,
            uint256 amount,
            bytes32 salt,
            bytes calldata signature)
    external view returns (bytes32, address) {
        bytes32 message = withdrawSignedMessage(token, payee, amount, salt);
        (bytes32 digest, address _signer) = signer(message, signature);
        return (digest, _signer);
    }

    function withdrawSignedMessage(
            address token,
            address payee,
            uint256 amount,
            bytes32 salt)
    internal pure returns (bytes32) {
        return keccak256(abi.encode(
          WITHDRAW_SIGNED_METHOD,
          token,
          payee,
          amount,
          salt
        ));
    }

    function addLiquidity(address token, uint256 amount) external {
        require(amount != 0, "Amount must be positive");
        require(token != address(0), "Bad token");
        amount = SafeAmount.safeTransferFrom(token, msg.sender, address(this), amount);
        liquidities[token][msg.sender] = liquidities[token][msg.sender].add(amount);
        emit BridgeLiquidityAdded(msg.sender, token, amount);
    }

    function removeLiquidityIfPossible(address token, uint256 amount) external returns (uint256) {
        require(amount != 0, "Amount must be positive");
        require(token != address(0), "Bad token");
        uint256 liq = liquidities[token][msg.sender];
        require(liq >= amount, "Not enough liquidity");
        uint256 balance = IERC20(token).balanceOf(address(this));
        uint256 actualLiq = balance > amount ? amount : balance;
        liquidities[token][msg.sender] = liquidities[token][msg.sender].sub(actualLiq);
        if (actualLiq != 0) {
            IERC20(token).safeTransfer(msg.sender, actualLiq);
            emit BridgeLiquidityRemoved(msg.sender, token, amount);
        }
        return actualLiq;
    }

    function liquidity(address token, address liquidityAdder) public view returns (uint256) {
        return liquidities[token][liquidityAdder];
    }
}

File 2 of 13 : ECDSA.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        // Divide the signature in r, s and v variables
        bytes32 r;
        bytes32 s;
        uint8 v;

        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        if (signature.length == 65) {
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            // solhint-disable-next-line no-inline-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
        } else if (signature.length == 64) {
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            // solhint-disable-next-line no-inline-assembly
            assembly {
                let vs := mload(add(signature, 0x40))
                r := mload(add(signature, 0x20))
                s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
                v := add(shr(255, vs), 27)
            }
        } else {
            revert("ECDSA: invalid signature length");
        }

        return recover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value");
        require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value");

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        require(signer != address(0), "ECDSA: invalid signature");

        return signer;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

File 3 of 13 : SafeERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../../../utils/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 IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    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));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    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) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _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. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "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");
        }
    }
}

File 4 of 13 : SigCheckable.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <=0.8.0;

import "@openzeppelin/contracts/utils/cryptography/draft-EIP712.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";

/**
 @dev Make sure to define method signatures
 */
abstract contract SigCheckable is EIP712 {
    mapping(bytes32=>bool) public usedHashes;

    function signerUnique(
        bytes32 message,
        bytes memory signature) internal returns (address _signer) {
        bytes32 digest;
        (digest, _signer) = signer(message, signature);
        require(!usedHashes[digest], "Message already used");
        usedHashes[digest] = true;
    }

    /*
        @dev example message;

        bytes32 constant METHOD_SIG =
            keccak256("WithdrawSigned(address token,address payee,uint256 amount,bytes32 salt)");
        bytes32 message = keccak256(abi.encode(
          METHOD_SIG,
          token,
          payee,
          amount,
          salt
    */
    function signer(
        bytes32 message,
        bytes memory signature) internal view returns (bytes32 digest, address _signer) {
        digest = _hashTypedDataV4(message);
        _signer = ECDSA.recover(digest, signature);
    }
}

File 5 of 13 : SafeAmount.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <=0.8.0;

import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

library SafeAmount {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;
    function safeTransferFrom(
        address token,
        address from,
        address to,
        uint256 amount) internal returns (uint256) {
        uint256 preBalance = IERC20(token).balanceOf(to);
        IERC20(token).transferFrom(from, to, amount);
        uint256 postBalance = IERC20(token).balanceOf(to);
        return postBalance.sub(preBalance);
    }
}

File 6 of 13 : WithAdmin.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <=0.8.0;
import "@openzeppelin/contracts/access/Ownable.sol";

contract WithAdmin is Ownable {
	address public admin;
	event AdminSet(address admin);

	function setAdmin(address _admin) external onlyOwner {
		admin = _admin;
		emit AdminSet(_admin);
	}

	modifier onlyAdmin() {
		require(msg.sender == admin || msg.sender == owner(), "WA: not admin");
		_;
	}
}

File 7 of 13 : IGeneralTaxDistributor.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <=0.8.0;

interface IGeneralTaxDistributor {
    function distributeTax(address token, address origSender) external returns (uint256);
}

File 8 of 13 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
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 9 of 13 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @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].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 10 of 13 : draft-EIP712.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./ECDSA.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;

    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;
    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = block.chainid;
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _TYPE_HASH = typeHash;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (block.chainid == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }

    function _buildDomainSeparator(bytes32 typeHash, bytes32 name, bytes32 version) private view returns (bytes32) {
        return keccak256(
            abi.encode(
                typeHash,
                name,
                version,
                block.chainid,
                address(this)
            )
        );
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }
}

File 11 of 13 : SafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // 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 (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @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) {
        return a + b;
    }

    /**
     * @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 a - b;
    }

    /**
     * @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) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting 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 a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards 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).
     *
     * 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, string memory errorMessage) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * 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, string memory errorMessage) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

File 12 of 13 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/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.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * 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.
 */
abstract 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 () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the 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 virtual 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 virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

File 13 of 13 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/*
 * @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 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.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

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

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"admin","type":"address"}],"name":"AdminSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"actor","type":"address"},{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"BridgeLiquidityAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"actor","type":"address"},{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"BridgeLiquidityRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"targetNetwork","type":"uint256"},{"indexed":false,"internalType":"address","name":"targetToken","type":"address"},{"indexed":false,"internalType":"address","name":"targetAddrdess","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"BridgeSwap","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":[{"indexed":false,"internalType":"address","name":"signer","type":"address"},{"indexed":false,"internalType":"address","name":"receiver","type":"address"},{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"}],"name":"TransferBySignature","type":"event"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"addLiquidity","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_signer","type":"address"}],"name":"addSigner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"chainId","type":"uint256"},{"internalType":"address","name":"targetToken","type":"address"}],"name":"allowTarget","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"allowedTargets","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"chainId","type":"uint256"}],"name":"disallowTarget","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"feeDistributor","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"fees","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"liquidityAdder","type":"address"}],"name":"liquidity","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"removeLiquidityIfPossible","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_signer","type":"address"}],"name":"removeSigner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_admin","type":"address"}],"name":"setAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"fee10000","type":"uint256"}],"name":"setFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_feeDistributor","type":"address"}],"name":"setFeeDistributor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"signers","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"targetNetwork","type":"uint256"},{"internalType":"address","name":"targetToken","type":"address"}],"name":"swap","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"targetNetwork","type":"uint256"},{"internalType":"address","name":"targetToken","type":"address"},{"internalType":"address","name":"targetAddress","type":"address"}],"name":"swapToAddress","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"usedHashes","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"payee","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes32","name":"salt","type":"bytes32"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"withdrawSigned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"payee","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes32","name":"salt","type":"bytes32"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"withdrawSignedVerify","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"},{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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Transaction Hash Block Value Eth2 PubKey Valid
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Chain Token Portfolio % Price Amount Value
ETH36.84%$0.256222698,738.5573$179,032.19
ETH20.73%$0.267042377,285.7827$100,751.27
ETH7.13%$0.0192081,802,961.8733$34,631.45
ETH4.95%$0.00128818,695,494.664$24,072.32
ETH0.67%$0.0014222,289,800.3028$3,256.23
ETH0.60%$0.011892244,810.5073$2,911.27
ETH0.59%$0.002926973,120.3814$2,846.92
ETH0.18%$0.0007161,225,145.771$876.63
ETH0.17%$0.2384923,400.4367$810.98
ETH0.08%$0.000427886,663.4125$378.5
ETH<0.01%$0.05494755.4571$3.05
BSC11.29%$0.0119354,595,281.28$54,843.12
BSC11.26%$565.6696.7713$54,739.65
BSC1.77%$0.00042620,216,924.1087$8,618.27
BSC1.06%$0.07036673,182.7176$5,149.58
BSC0.12%$0.001286469,440.351$603.71
BSC0.11%$0.003633151,084.7841$548.82
BSC0.03%$0.0549253,073.9013$168.83
BSC<0.01%$0.23860870.5031$16.82
BSC<0.01%$0.0034523,338.4678$11.52
BSC<0.01%$3,549.470.002426$8.61
BSC<0.01%$0.019109280.6452$5.36
BSC<0.01%$0.002926235.3516$0.6885
POL1.67%$0.012111671,189.433$8,128.67
POL0.71%$565.666.0811$3,439.81
POL0.02%$0.0408682,413.6777$98.64
POL<0.01%$0.07010757.0067$4
POL<0.01%$0.1263972.5913$0.3275
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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.