Contract 0x2b42AFFD4b7C14d9B7C2579229495c052672Ccd3 9

 

Contract Overview

Balance:
0 MATIC

MATIC Value:
$0.00

Token:
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xe1b4628345550301fe41afb1fb8420667070042b00b246c647b4dc7e2d740dd4Outbound Transfe...319009962022-08-15 0:50:29110 days 17 hrs ago0xdccfd98186def1e8f50539c42c978b71ce111117 IN  0x2b42affd4b7c14d9b7c2579229495c052672ccd30.275 MATIC0.00073413 30
0x5dc4cd21a70244350ad547d4e6af7258d7fd6d9049bb42945ef24e5be27ba5db0x60806040224763202021-12-13 12:49:08355 days 5 hrs ago0x5fd7d0d6b91cc4787bcb86ca47e0bd4ea0346d34 IN  Create: HopImplL20 MATIC0.03697640
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x225d90d39e3e920312f9d1d01e3f0d6a274c95046ce0bb691baa101b85706d34248942782022-02-13 13:35:13293 days 4 hrs ago 0x2b42affd4b7c14d9b7c2579229495c052672ccd3 Hop Protocol: MATIC Wrapper2.8 MATIC
0x225d90d39e3e920312f9d1d01e3f0d6a274c95046ce0bb691baa101b85706d34248942782022-02-13 13:35:13293 days 4 hrs ago Socket: Registry 0x2b42affd4b7c14d9b7c2579229495c052672ccd32.8 MATIC
0x4ef207a320dea92fd536709150e33c3460a52dbc5ef939cd74820f00ff415841248923392022-02-13 12:21:36293 days 6 hrs ago 0x2b42affd4b7c14d9b7c2579229495c052672ccd3 Hop Protocol: MATIC Wrapper2.8 MATIC
0x4ef207a320dea92fd536709150e33c3460a52dbc5ef939cd74820f00ff415841248923392022-02-13 12:21:36293 days 6 hrs ago Socket: Registry 0x2b42affd4b7c14d9b7c2579229495c052672ccd32.8 MATIC
0xa6ada3741513c04d2c62d4b71b5b12ac4c6250dafb6c94e4fdd20835722218b1248887882022-02-13 10:13:13293 days 8 hrs ago 0x2b42affd4b7c14d9b7c2579229495c052672ccd3 Hop Protocol: MATIC Wrapper2.6 MATIC
0xa6ada3741513c04d2c62d4b71b5b12ac4c6250dafb6c94e4fdd20835722218b1248887882022-02-13 10:13:13293 days 8 hrs ago Socket: Registry 0x2b42affd4b7c14d9b7c2579229495c052672ccd32.6 MATIC
0xe3e57eb10ffd2d7d899a15b5f7f2a729b5a5ebc8808f50e99e8095524fb4136f248871222022-02-13 9:15:08293 days 9 hrs ago 0x2b42affd4b7c14d9b7c2579229495c052672ccd3 Hop Protocol: MATIC Wrapper2.6 MATIC
0xe3e57eb10ffd2d7d899a15b5f7f2a729b5a5ebc8808f50e99e8095524fb4136f248871222022-02-13 9:15:08293 days 9 hrs ago Socket: Registry 0x2b42affd4b7c14d9b7c2579229495c052672ccd32.6 MATIC
0xe97b5cb3233a392bbaad66341e89a4f2bb77fb8ca14abbfd1779139dd2bed456248834522022-02-13 7:04:33293 days 11 hrs ago 0x2b42affd4b7c14d9b7c2579229495c052672ccd3 Hop Protocol: MATIC Wrapper2.3 MATIC
0xe97b5cb3233a392bbaad66341e89a4f2bb77fb8ca14abbfd1779139dd2bed456248834522022-02-13 7:04:33293 days 11 hrs ago Socket: Registry 0x2b42affd4b7c14d9b7c2579229495c052672ccd32.3 MATIC
0x69115e86375a337a3ab30220bf7c73293f17e6d8a8e0c873d071744cdf06150a248816952022-02-13 5:55:38293 days 12 hrs ago 0x2b42affd4b7c14d9b7c2579229495c052672ccd3 Hop Protocol: MATIC Wrapper2 MATIC
0x69115e86375a337a3ab30220bf7c73293f17e6d8a8e0c873d071744cdf06150a248816952022-02-13 5:55:38293 days 12 hrs ago Socket: Registry 0x2b42affd4b7c14d9b7c2579229495c052672ccd32 MATIC
0xc28814b92eec629331689684d07394226988c9faa136debfdcbe1b8d2a452d21248795652022-02-13 4:38:22293 days 13 hrs ago 0x2b42affd4b7c14d9b7c2579229495c052672ccd3 Hop Protocol: MATIC Wrapper2.8 MATIC
0xc28814b92eec629331689684d07394226988c9faa136debfdcbe1b8d2a452d21248795652022-02-13 4:38:22293 days 13 hrs ago Socket: Registry 0x2b42affd4b7c14d9b7c2579229495c052672ccd32.8 MATIC
0xa8921e04b25f400b337dd81d296f9765de4237873a7e63ece84078fcee3fa11c248775372022-02-13 3:25:29293 days 15 hrs ago 0x2b42affd4b7c14d9b7c2579229495c052672ccd3 Hop Protocol: MATIC Wrapper3 MATIC
0xa8921e04b25f400b337dd81d296f9765de4237873a7e63ece84078fcee3fa11c248775372022-02-13 3:25:29293 days 15 hrs ago Socket: Registry 0x2b42affd4b7c14d9b7c2579229495c052672ccd33 MATIC
0x924e0540fa8dee45e710f574d164a0008b97aa87ca95802561cf8a928375b07d248745252022-02-13 1:35:34293 days 16 hrs ago 0x2b42affd4b7c14d9b7c2579229495c052672ccd3 Hop Protocol: MATIC Wrapper1 MATIC
0x924e0540fa8dee45e710f574d164a0008b97aa87ca95802561cf8a928375b07d248745252022-02-13 1:35:34293 days 16 hrs ago Socket: Registry 0x2b42affd4b7c14d9b7c2579229495c052672ccd31 MATIC
0x5d05d3009e43b7c79407dcd8199b3fe03e2707fb28a54c8ca333adf4e748d76f242243992022-01-27 11:53:17310 days 6 hrs ago 0x2b42affd4b7c14d9b7c2579229495c052672ccd3 Hop Protocol: MATIC Wrapper0.2 MATIC
0x5d05d3009e43b7c79407dcd8199b3fe03e2707fb28a54c8ca333adf4e748d76f242243992022-01-27 11:53:17310 days 6 hrs ago Socket: Registry 0x2b42affd4b7c14d9b7c2579229495c052672ccd30.2 MATIC
0x673fe2eba6fab2777021a7a6b3f9f2bf26365e4810c53d46fe2b3610bd16a503240555362022-01-23 6:21:21314 days 12 hrs ago 0x2b42affd4b7c14d9b7c2579229495c052672ccd3 Hop Protocol: MATIC Wrapper26 MATIC
0x673fe2eba6fab2777021a7a6b3f9f2bf26365e4810c53d46fe2b3610bd16a503240555362022-01-23 6:21:21314 days 12 hrs ago Socket: Registry 0x2b42affd4b7c14d9b7c2579229495c052672ccd326 MATIC
0x49049d17e5d5667fc84c72ed075efed97e694f5f5cfb71796a7e457320aaa681240295302022-01-22 14:53:41315 days 3 hrs ago 0x2b42affd4b7c14d9b7c2579229495c052672ccd3 Hop Protocol: MATIC Wrapper26 MATIC
0x49049d17e5d5667fc84c72ed075efed97e694f5f5cfb71796a7e457320aaa681240295302022-01-22 14:53:41315 days 3 hrs ago Socket: Registry 0x2b42affd4b7c14d9b7c2579229495c052672ccd326 MATIC
0x67c76a230c181d40ac5af56e02f3be3d9ec99b5fc3d91c87d9502c09cddbd007240292092022-01-22 14:42:39315 days 3 hrs ago 0x2b42affd4b7c14d9b7c2579229495c052672ccd3 Hop Protocol: MATIC Wrapper27 MATIC
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Contract Source Code Verified (Exact Match)

Contract Name:
HopImplL2

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
Yes with 800 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 11 : Hop.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "../../interfaces/hop/bridge.sol";
import "../../interfaces/hop/amm.sol";
import "../../helpers/errors.sol";
import "../../ImplBase.sol";

/**
// @title HOP L2 Implementation.
// @notice This is the L2 implementation, so this is used when transferring from l2
// to supported l2s or L1.
// Called by the registry if the selected bridge is Hop Bridge.
// @dev Follows the interface of ImplBase.
// @author Movr Network.
*/
contract HopImplL2 is ImplBase, ReentrancyGuard {
    using SafeERC20 for IERC20;

    /// @notice constructor only required resistry address.
    constructor(address _registry) ImplBase(_registry) {}

    /**
    // @notice Function responsible for cross chain transfer from l2 to l1 or supported
    // l2s.
    // Called by the registry when the selected bridge is Hop bridge.
    // @dev Try to check for the liquidity on the other side before calling this.
    // @param _amount amount to be sent.
    // @param _from sender address
    // @param _receiverAddress receiver address
    // @param _toChainId Destination Chain Id
    // @param _token address of the token to bridged to the destination chain. 
    // @param _data data required to call the Hop swap and send function. hopAmm address,
    // boderfee, amount out min and deadline.
    */
    function outboundTransferTo(
        uint256 _amount,
        address _from,
        address _receiverAddress,
        address _token,
        uint256 _toChainId,
        bytes memory _data
    ) external payable override onlyRegistry nonReentrant {
        // decode data
        (
            address _hopAMM,
            uint256 _bonderFee, // fees passed to relayer
            uint256 _amountOutMin,
            uint256 _deadline,
            address _tokenAddress
        ) = abi.decode(_data, (address, uint256, uint256, uint256, address));
        // token address might not be indication thats why passed through extraData
        if (_tokenAddress == NATIVE_TOKEN_ADDRESS) {
            require(msg.value != 0, MovrErrors.VALUE_SHOULD_NOT_BE_ZERO);
            // perform bridging
            HopAMM(_hopAMM).swapAndSend{value: _amount}(
                _toChainId,
                _receiverAddress,
                _amount,
                _bonderFee,
                _amountOutMin,
                _deadline,
                _amountOutMin,
                _deadline
            );
            return;
        }
        require(msg.value == 0, MovrErrors.VALUE_SHOULD_BE_ZERO);
        IERC20(_token).safeTransferFrom(_from, address(this), _amount);
        IERC20(_token).safeIncreaseAllowance(_hopAMM, _amount);

        // perform bridging
        HopAMM(_hopAMM).swapAndSend(
            _toChainId,
            _receiverAddress,
            _amount,
            _bonderFee,
            _amountOutMin,
            _deadline,
            _amountOutMin,
            _deadline
        );
    }
}

File 2 of 11 : 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 3 of 11 : 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 11 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor () {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

File 5 of 11 : bridge.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0;

// Not being used I think. Remove if unnecessary.
interface HopBridge {
    function send(
        uint256 chainId,
        address recipient,
        uint256 amount,
        uint256 bonderFee,
        uint256 amountOutMin,
        uint256 deadline
    ) external;
}

File 6 of 11 : amm.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0;

/**
@title HopAMM
@notice responsible for calling the HOP L2 Impl functions.
 */
interface HopAMM {
    function calculateSwap(
        uint8 tokenIndexFrom,
        uint8 tokenIndexTo,
        uint256 dx
    ) external view returns (uint256);

    function swap(
        uint8 tokenIndexFrom,
        uint8 tokenIndexTo,
        uint256 dx,
        uint256 minDy,
        uint256 deadline
    ) external returns (uint256);

    function swapAndSend(
        uint256 chainId,
        address recipient,
        uint256 amount,
        uint256 bonderFee,
        uint256 amountOutMin,
        uint256 deadline,
        uint256 destinationAmountOutMin,
        uint256 destinationDeadline
    ) external payable;

    function getTokenIndex(address tokenAddress) external view returns (uint8);
}

File 7 of 11 : errors.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0;

library MovrErrors {
    string internal constant ADDRESS_0_PROVIDED = "ADDRESS_0_PROVIDED";
    string internal constant EMPTY_INPUT = "EMPTY_INPUT";
    string internal constant LENGTH_MISMATCH = "LENGTH_MISMATCH";
    string internal constant INVALID_VALUE = "INVALID_VALUE";
    string internal constant INVALID_AMT = "INVALID_AMT";

    string internal constant IMPL_NOT_FOUND = "IMPL_NOT_FOUND";
    string internal constant ROUTE_NOT_FOUND = "ROUTE_NOT_FOUND";
    string internal constant IMPL_NOT_ALLOWED = "IMPL_NOT_ALLOWED";
    string internal constant ROUTE_NOT_ALLOWED = "ROUTE_NOT_ALLOWED";
    string internal constant INVALID_CHAIN_DATA = "INVALID_CHAIN_DATA";
    string internal constant CHAIN_NOT_SUPPORTED = "CHAIN_NOT_SUPPORTED";
    string internal constant TOKEN_NOT_SUPPORTED = "TOKEN_NOT_SUPPORTED";
    string internal constant NOT_IMPLEMENTED = "NOT_IMPLEMENTED";
    string internal constant INVALID_SENDER = "INVALID_SENDER";
    string internal constant INVALID_BRIDGE_ID = "INVALID_BRIDGE_ID";
    string internal constant MIDDLEWARE_ACTION_FAILED =
        "MIDDLEWARE_ACTION_FAILED";
    string internal constant VALUE_SHOULD_BE_ZERO = "VALUE_SHOULD_BE_ZERO";
    string internal constant VALUE_SHOULD_NOT_BE_ZERO = "VALUE_SHOULD_NOT_BE_ZERO";
    string internal constant VALUE_NOT_ENOUGH = "VALUE_NOT_ENOUGH";
    string internal constant VALUE_NOT_EQUAL_TO_AMOUNT = "VALUE_NOT_EQUAL_TO_AMOUNT";
}

File 8 of 11 : ImplBase.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "./helpers/errors.sol";

/**
@title Abstract Implementation Contract.
@notice All Bridge Implementation will follow this interface. 
*/
abstract contract ImplBase is Ownable {
    using SafeERC20 for IERC20;
    address public registry;
    address public constant NATIVE_TOKEN_ADDRESS =
        address(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
    event UpdateRegistryAddress(address indexed registryAddress);

    constructor(address _registry) Ownable() {
        registry = _registry;
    }

    modifier onlyRegistry() {
        require(msg.sender == registry, MovrErrors.INVALID_SENDER);
        _;
    }

    function updateRegistryAddress(address newRegistry) external onlyOwner {
        registry = newRegistry;
        emit UpdateRegistryAddress(newRegistry);
    }

    function rescueFunds(
        address token,
        address userAddress,
        uint256 amount
    ) external onlyOwner {
        IERC20(token).safeTransfer(userAddress, amount);
    }

    function outboundTransferTo(
        uint256 _amount,
        address _from,
        address _receiverAddress,
        address _token,
        uint256 _toChainId,
        bytes memory _extraData
    ) external payable virtual;
}

File 9 of 11 : 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 11 : 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 11 of 11 : 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
{
  "metadata": {
    "bytecodeHash": "none",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 800
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_registry","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"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":true,"internalType":"address","name":"registryAddress","type":"address"}],"name":"UpdateRegistryAddress","type":"event"},{"inputs":[],"name":"NATIVE_TOKEN_ADDRESS","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_receiverAddress","type":"address"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_toChainId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"outboundTransferTo","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"registry","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"userAddress","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"rescueFunds","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newRegistry","type":"address"}],"name":"updateRegistryAddress","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

000000000000000000000000c30141b657f4216252dc59af2e7cdb9d8792e1b0

-----Decoded View---------------
Arg [0] : _registry (address): 0xc30141b657f4216252dc59af2e7cdb9d8792e1b0

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000c30141b657f4216252dc59af2e7cdb9d8792e1b0


Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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