ETH Price: $3,695.19 (-6.03%)

Contract

0x86355F02119bdBC28ED6A4D5E0cA327Ca7730fFF
Transaction Hash
Method
Block
From
To
Send OFT Fee V2183661642024-12-15 7:52:563 days ago1734249176IN
0x86355F02...Ca7730fFF
0.0000939 ETH0.000026530.0944
Send OFT Fee V2183513322024-12-14 18:18:404 days ago1734200320IN
0x86355F02...Ca7730fFF
0.00009714 ETH0.000047810.17
Send OFT Fee V2183463512024-12-14 13:42:034 days ago1734183723IN
0x86355F02...Ca7730fFF
0.00010763 ETH0.000034850.124
Send OFT Fee V2183048682024-12-12 23:30:075 days ago1734046207IN
0x86355F02...Ca7730fFF
0.00010406 ETH0.000056140.205
Send OFT Fee V2182903602024-12-12 10:10:036 days ago1733998203IN
0x86355F02...Ca7730fFF
0.00016443 ETH0.000077620.281
Send OFT Fee V2182771242024-12-11 22:05:066 days ago1733954706IN
0x86355F02...Ca7730fFF
0.00016443 ETH0.000094080.35
Send OFT Fee V2182447162024-12-10 16:26:478 days ago1733848007IN
0x86355F02...Ca7730fFF
0.00045016 ETH0.000223790.827
Send OFT Fee V2181903782024-12-08 14:40:1610 days ago1733668816IN
0x86355F02...Ca7730fFF
0.00008975 ETH0.000044710.159
Send OFT Fee V2181899072024-12-08 14:14:2510 days ago1733667265IN
0x86355F02...Ca7730fFF
0.00015869 ETH0.000045850.166
Send OFT Fee V2181871412024-12-08 11:41:3710 days ago1733658097IN
0x86355F02...Ca7730fFF
0.00015869 ETH0.000037650.14
Send OFT Fee V2181862232024-12-08 10:51:0910 days ago1733655069IN
0x86355F02...Ca7730fFF
0.00008731 ETH0.000030640.109
Send OFT Fee V2181654392024-12-07 15:57:3711 days ago1733587057IN
0x86355F02...Ca7730fFF
0.00015869 ETH0.000069930.26
Send OFT Fee V2181631012024-12-07 13:49:1211 days ago1733579352IN
0x86355F02...Ca7730fFF
0.0000902 ETH0.000056210.2
Send OFT Fee V2181551252024-12-07 6:32:1311 days ago1733553133IN
0x86355F02...Ca7730fFF
0.00015869 ETH0.000053580.194
Send OFT Fee V2181414442024-12-06 18:03:5312 days ago1733508233IN
0x86355F02...Ca7730fFF
0.00015869 ETH0.000128730.466
Send OFT Fee V2181405792024-12-06 17:16:3912 days ago1733505399IN
0x86355F02...Ca7730fFF
0.00015869 ETH0.000137170.51
Send OFT Fee V2181353552024-12-06 12:29:2112 days ago1733488161IN
0x86355F02...Ca7730fFF
0.00009735 ETH0.000058190.207
Send OFT Fee V2181266612024-12-06 4:32:3212 days ago1733459552IN
0x86355F02...Ca7730fFF
0.00016391 ETH0.00005840.23
Send OFT Fee V2181247332024-12-06 2:47:1912 days ago1733453239IN
0x86355F02...Ca7730fFF
0.00044964 ETH0.000074510.268
Send OFT Fee V2181153522024-12-05 18:12:3413 days ago1733422354IN
0x86355F02...Ca7730fFF
0.00016391 ETH0.000098880.358
Send OFT Fee V2180832222024-12-04 12:40:1814 days ago1733316018IN
0x86355F02...Ca7730fFF
0.00045532 ETH0.000075530.279
Send OFT Fee V2180361452024-12-02 15:00:2516 days ago1733151625IN
0x86355F02...Ca7730fFF
0.00016146 ETH0.000130640.486
Send OFT Fee V2179931972024-11-30 20:16:4918 days ago1732997809IN
0x86355F02...Ca7730fFF
0.00016146 ETH0.000052720.196
Send OFT Fee V2179857252024-11-30 12:53:5318 days ago1732971233IN
0x86355F02...Ca7730fFF
0.00016146 ETH0.000034230.124
Send OFT Fee V2179624922024-11-29 13:59:3719 days ago1732888777IN
0x86355F02...Ca7730fFF
0.00016146 ETH0.00005880.213
View all transactions

Latest 25 internal transactions (View All)

Parent Transaction Hash Block From To
183661642024-12-15 7:52:563 days ago1734249176
0x86355F02...Ca7730fFF
0.0000939 ETH
183513322024-12-14 18:18:404 days ago1734200320
0x86355F02...Ca7730fFF
0.00009714 ETH
183463512024-12-14 13:42:034 days ago1734183723
0x86355F02...Ca7730fFF
0.00010763 ETH
183048682024-12-12 23:30:075 days ago1734046207
0x86355F02...Ca7730fFF
0.00010406 ETH
182903602024-12-12 10:10:036 days ago1733998203
0x86355F02...Ca7730fFF
0.00016443 ETH
182771242024-12-11 22:05:066 days ago1733954706
0x86355F02...Ca7730fFF
0.00016443 ETH
182447162024-12-10 16:26:478 days ago1733848007
0x86355F02...Ca7730fFF
0.00045016 ETH
181903782024-12-08 14:40:1610 days ago1733668816
0x86355F02...Ca7730fFF
0.00008975 ETH
181899072024-12-08 14:14:2510 days ago1733667265
0x86355F02...Ca7730fFF
0.00015869 ETH
181871412024-12-08 11:41:3710 days ago1733658097
0x86355F02...Ca7730fFF
0.00015869 ETH
181862232024-12-08 10:51:0910 days ago1733655069
0x86355F02...Ca7730fFF
0.00008731 ETH
181654392024-12-07 15:57:3711 days ago1733587057
0x86355F02...Ca7730fFF
0.00015869 ETH
181631012024-12-07 13:49:1211 days ago1733579352
0x86355F02...Ca7730fFF
0.0000902 ETH
181551252024-12-07 6:32:1311 days ago1733553133
0x86355F02...Ca7730fFF
0.00015869 ETH
181414442024-12-06 18:03:5312 days ago1733508233
0x86355F02...Ca7730fFF
0.00015869 ETH
181405792024-12-06 17:16:3912 days ago1733505399
0x86355F02...Ca7730fFF
0.00015869 ETH
181353552024-12-06 12:29:2112 days ago1733488161
0x86355F02...Ca7730fFF
0.00009735 ETH
181266612024-12-06 4:32:3212 days ago1733459552
0x86355F02...Ca7730fFF
0.00016391 ETH
181247332024-12-06 2:47:1912 days ago1733453239
0x86355F02...Ca7730fFF
0.00044964 ETH
181153522024-12-05 18:12:3413 days ago1733422354
0x86355F02...Ca7730fFF
0.00016391 ETH
180832222024-12-04 12:40:1814 days ago1733316018
0x86355F02...Ca7730fFF
0.00045532 ETH
180361452024-12-02 15:00:2516 days ago1733151625
0x86355F02...Ca7730fFF
0.00016146 ETH
179931972024-11-30 20:16:4918 days ago1732997809
0x86355F02...Ca7730fFF
0.00016146 ETH
179857252024-11-30 12:53:5318 days ago1732971233
0x86355F02...Ca7730fFF
0.00016146 ETH
179624922024-11-29 13:59:3719 days ago1732888777
0x86355F02...Ca7730fFF
0.00016146 ETH
View All Internal Transactions
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x44E3DbE6...f133D9b51
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
OFTWrapper

Compiler Version
v0.8.12+commit.f00d7308

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license
File 1 of 15 : OFTWrapper.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@layerzerolabs/solidity-examples/contracts/token/oft/v2/IOFTV2.sol";
import "@layerzerolabs/solidity-examples/contracts/token/oft/v2/fee/IOFTWithFee.sol";
import "@layerzerolabs/solidity-examples/contracts/token/oft/IOFT.sol";
import "./interfaces/IOFTWrapper.sol";

contract OFTWrapper is IOFTWrapper, Ownable, ReentrancyGuard {
    using SafeERC20 for IOFT;

    uint256 public constant BPS_DENOMINATOR = 10000;
    uint256 public constant MAX_UINT = 2**256 - 1; // indicates a bp fee of 0 that overrides the default bps

    uint256 public defaultBps;
    mapping(address => uint256) public oftBps;

    constructor(uint256 _defaultBps) {
        require(_defaultBps < BPS_DENOMINATOR, "OFTWrapper: defaultBps >= 100%");
        defaultBps = _defaultBps;
    }

    function setDefaultBps(uint256 _defaultBps) external onlyOwner {
        require(_defaultBps < BPS_DENOMINATOR, "OFTWrapper: defaultBps >= 100%");
        defaultBps = _defaultBps;
    }

    function setOFTBps(address _token, uint256 _bps) external onlyOwner {
        require(_bps < BPS_DENOMINATOR || _bps == MAX_UINT, "OFTWrapper: oftBps[_oft] >= 100%");
        oftBps[_token] = _bps;
    }

    function withdrawFees(
        address _oft,
        address _to,
        uint256 _amount
    ) external onlyOwner {
        IOFT(_oft).safeTransfer(_to, _amount);
        emit WrapperFeeWithdrawn(_oft, _to, _amount);
    }

    function sendOFT(
        address _oft,
        uint16 _dstChainId,
        bytes calldata _toAddress,
        uint256 _amount,
        uint256 _minAmount,
        address payable _refundAddress,
        address _zroPaymentAddress,
        bytes calldata _adapterParams,
        FeeObj calldata _feeObj
    ) external payable nonReentrant {
        uint256 amountToSwap = _getAmountAndPayFee(_oft, _amount, _minAmount, _feeObj);
        IOFT(_oft).sendFrom{value: msg.value}(msg.sender, _dstChainId, _toAddress, amountToSwap, _refundAddress, _zroPaymentAddress, _adapterParams);
    }

    function sendProxyOFT(
        address _proxyOft,
        uint16 _dstChainId,
        bytes calldata _toAddress,
        uint256 _amount,
        uint256 _minAmount,
        address payable _refundAddress,
        address _zroPaymentAddress,
        bytes calldata _adapterParams,
        FeeObj calldata _feeObj
    ) external payable nonReentrant {
        address token = IOFTV2(_proxyOft).token();
        {
            uint256 amountToSwap = _getAmountAndPayFeeProxy(token, _amount, _minAmount, _feeObj);

            // approve proxy to spend tokens
            IOFT(token).safeApprove(_proxyOft, amountToSwap);
            IOFT(_proxyOft).sendFrom{value: msg.value}(address(this), _dstChainId, _toAddress, amountToSwap, _refundAddress, _zroPaymentAddress, _adapterParams);
        }

        // reset allowance if sendFrom() does not consume full amount
        if (IOFT(token).allowance(address(this), _proxyOft) > 0) IOFT(token).safeApprove(_proxyOft, 0);
    }

    function sendOFTV2(
        address _oft,
        uint16 _dstChainId,
        bytes32 _toAddress,
        uint256 _amount,
        uint256 _minAmount,
        IOFTV2.LzCallParams calldata _callParams,
        FeeObj calldata _feeObj
    ) external payable nonReentrant {
        uint256 amountToSwap = _getAmountAndPayFee(_oft, _amount, _minAmount, _feeObj);
        IOFTV2(_oft).sendFrom{value: msg.value}(msg.sender, _dstChainId, _toAddress, amountToSwap, _callParams);
    }

    function sendOFTFeeV2(
        address _oft,
        uint16 _dstChainId,
        bytes32 _toAddress,
        uint256 _amount,
        uint256 _minAmount,
        IOFTV2.LzCallParams calldata _callParams,
        FeeObj calldata _feeObj
    ) external payable nonReentrant {
        uint256 amountToSwap = _getAmountAndPayFee(_oft, _amount, _minAmount, _feeObj);
        IOFTWithFee(_oft).sendFrom{value: msg.value}(msg.sender, _dstChainId, _toAddress, amountToSwap, _minAmount, _callParams);
    }

    function sendProxyOFTV2(
        address _proxyOft,
        uint16 _dstChainId,
        bytes32 _toAddress,
        uint256 _amount,
        uint256 _minAmount,
        IOFTV2.LzCallParams calldata _callParams,
        FeeObj calldata _feeObj
    ) external payable nonReentrant {
        address token = IOFTV2(_proxyOft).token();
        uint256 amountToSwap = _getAmountAndPayFeeProxy(token, _amount, _minAmount, _feeObj);

        // approve proxy to spend tokens
        IOFT(token).safeApprove(_proxyOft, amountToSwap);
        IOFTV2(_proxyOft).sendFrom{value: msg.value}(address(this), _dstChainId, _toAddress, amountToSwap, _callParams);

        // reset allowance if sendFrom() does not consume full amount
        if (IOFT(token).allowance(address(this), _proxyOft) > 0) IOFT(token).safeApprove(_proxyOft, 0);
    }

    function sendProxyOFTFeeV2(
        address _proxyOft,
        uint16 _dstChainId,
        bytes32 _toAddress,
        uint256 _amount,
        uint256 _minAmount,
        IOFTV2.LzCallParams calldata _callParams,
        FeeObj calldata _feeObj
    ) external payable nonReentrant {
        address token = IOFTV2(_proxyOft).token();
        uint256 amountToSwap = _getAmountAndPayFeeProxy(token, _amount, _minAmount, _feeObj);

        // approve proxy to spend tokens
        IOFT(token).safeApprove(_proxyOft, amountToSwap);
        IOFTWithFee(_proxyOft).sendFrom{value: msg.value}(address(this), _dstChainId, _toAddress, amountToSwap, _minAmount, _callParams);

        // reset allowance if sendFrom() does not consume full amount
        if (IOFT(token).allowance(address(this), _proxyOft) > 0) IOFT(token).safeApprove(_proxyOft, 0);
    }

    function _getAmountAndPayFeeProxy(
        address _token,
        uint256 _amount,
        uint256 _minAmount,
        FeeObj calldata _feeObj
    ) internal returns (uint256) {
        (uint256 amountToSwap, uint256 wrapperFee, uint256 callerFee) = getAmountAndFees(_token, _amount, _feeObj.callerBps);
        require(amountToSwap >= _minAmount && amountToSwap > 0, "OFTWrapper: not enough amountToSwap");

        IOFT(_token).safeTransferFrom(msg.sender, address(this), amountToSwap + wrapperFee); // pay wrapper and move proxy tokens to contract
        if (callerFee > 0) IOFT(_token).safeTransferFrom(msg.sender, _feeObj.caller, callerFee); // pay caller

        emit WrapperFees(_feeObj.partnerId, _token, wrapperFee, callerFee);

        return amountToSwap;
    }

    function _getAmountAndPayFee(
        address _token,
        uint256 _amount,
        uint256 _minAmount,
        FeeObj calldata _feeObj
    ) internal returns (uint256) {
        (uint256 amountToSwap, uint256 wrapperFee, uint256 callerFee) = getAmountAndFees(_token, _amount, _feeObj.callerBps);
        require(amountToSwap >= _minAmount && amountToSwap > 0, "OFTWrapper: not enough amountToSwap");

        if (wrapperFee > 0) IOFT(_token).safeTransferFrom(msg.sender, address(this), wrapperFee); // pay wrapper
        if (callerFee > 0) IOFT(_token).safeTransferFrom(msg.sender, _feeObj.caller, callerFee); // pay caller

        emit WrapperFees(_feeObj.partnerId, _token, wrapperFee, callerFee);

        return amountToSwap;
    }

    function getAmountAndFees(
        address _token, // will be the token on proxies, and the oft on non-proxy
        uint256 _amount,
        uint256 _callerBps
    )
        public
        view
        override
        returns (
            uint256 amount,
            uint256 wrapperFee,
            uint256 callerFee
        )
    {
        uint256 wrapperBps;

        if (oftBps[_token] == MAX_UINT) {
            wrapperBps = 0;
        } else if (oftBps[_token] > 0) {
            wrapperBps = oftBps[_token];
        } else {
            wrapperBps = defaultBps;
        }

        require(wrapperBps + _callerBps < BPS_DENOMINATOR, "OFTWrapper: Fee bps >= 100%");

        wrapperFee = wrapperBps > 0 ? (_amount * wrapperBps) / BPS_DENOMINATOR : 0;
        callerFee = _callerBps > 0 ? (_amount * _callerBps) / BPS_DENOMINATOR : 0;
        amount = wrapperFee > 0 || callerFee > 0 ? _amount - wrapperFee - callerFee : _amount;
    }

    function estimateSendFee(
        address _oft,
        uint16 _dstChainId,
        bytes calldata _toAddress,
        uint256 _amount,
        bool _useZro,
        bytes calldata _adapterParams,
        FeeObj calldata _feeObj
    ) external view override returns (uint nativeFee, uint zroFee) {
        (uint256 amount, , ) = getAmountAndFees(_oft, _amount, _feeObj.callerBps);

        return IOFT(_oft).estimateSendFee(_dstChainId, _toAddress, amount, _useZro, _adapterParams);
    }

    function estimateSendFeeV2(
        address _oft,
        uint16 _dstChainId,
        bytes32 _toAddress,
        uint256 _amount,
        bool _useZro,
        bytes calldata _adapterParams,
        FeeObj calldata _feeObj
    ) external view override returns (uint nativeFee, uint zroFee) {
        (uint256 amount, , ) = getAmountAndFees(_oft, _amount, _feeObj.callerBps);

        return IOFTV2(_oft).estimateSendFee(_dstChainId, _toAddress, amount, _useZro, _adapterParams);
    }
}

File 2 of 15 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

File 3 of 15 : IOFTCore.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

/**
 * @dev Interface of the IOFT core standard
 */
interface IOFTCore is IERC165 {
    /**
     * @dev estimate send token `_tokenId` to (`_dstChainId`, `_toAddress`)
     * _dstChainId - L0 defined chain id to send tokens too
     * _toAddress - dynamic bytes array which contains the address to whom you are sending tokens to on the dstChain
     * _amount - amount of the tokens to transfer
     * _useZro - indicates to use zro to pay L0 fees
     * _adapterParam - flexible bytes array to indicate messaging adapter services in L0
     */
    function estimateSendFee(uint16 _dstChainId, bytes calldata _toAddress, uint _amount, bool _useZro, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee);

    /**
     * @dev send `_amount` amount of token to (`_dstChainId`, `_toAddress`) from `_from`
     * `_from` the owner of token
     * `_dstChainId` the destination chain identifier
     * `_toAddress` can be any size depending on the `dstChainId`.
     * `_amount` the quantity of tokens in wei
     * `_refundAddress` the address LayerZero refunds if too much message fee is sent
     * `_zroPaymentAddress` set to address(0x0) if not paying in ZRO (LayerZero Token)
     * `_adapterParams` is a flexible bytes array to indicate messaging adapter services
     */
    function sendFrom(address _from, uint16 _dstChainId, bytes calldata _toAddress, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable;

    /**
     * @dev returns the circulating amount of tokens on current chain
     */
    function circulatingSupply() external view returns (uint);

    /**
     * @dev returns the address of the ERC20 token
     */
    function token() external view returns (address);

    /**
     * @dev Emitted when `_amount` tokens are moved from the `_sender` to (`_dstChainId`, `_toAddress`)
     * `_nonce` is the outbound nonce
     */
    event SendToChain(uint16 indexed _dstChainId, address indexed _from, bytes _toAddress, uint _amount);

    /**
     * @dev Emitted when `_amount` tokens are received from `_srcChainId` into the `_toAddress` on the local chain.
     * `_nonce` is the inbound nonce.
     */
    event ReceiveFromChain(uint16 indexed _srcChainId, address indexed _to, uint _amount);

    event SetUseCustomAdapterParams(bool _useCustomAdapterParams);
}

File 4 of 15 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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);

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

File 5 of 15 : ICommonOFT.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

/**
 * @dev Interface of the IOFT core standard
 */
interface ICommonOFT is IERC165 {

    struct LzCallParams {
        address payable refundAddress;
        address zroPaymentAddress;
        bytes adapterParams;
    }

    /**
     * @dev estimate send token `_tokenId` to (`_dstChainId`, `_toAddress`)
     * _dstChainId - L0 defined chain id to send tokens too
     * _toAddress - dynamic bytes array which contains the address to whom you are sending tokens to on the dstChain
     * _amount - amount of the tokens to transfer
     * _useZro - indicates to use zro to pay L0 fees
     * _adapterParam - flexible bytes array to indicate messaging adapter services in L0
     */
    function estimateSendFee(uint16 _dstChainId, bytes32 _toAddress, uint _amount, bool _useZro, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee);

    function estimateSendAndCallFee(uint16 _dstChainId, bytes32 _toAddress, uint _amount, bytes calldata _payload, uint64 _dstGasForCall, bool _useZro, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee);

    /**
     * @dev returns the circulating amount of tokens on current chain
     */
    function circulatingSupply() external view returns (uint);

    /**
     * @dev returns the address of the ERC20 token
     */
    function token() external view returns (address);
}

File 6 of 15 : draft-IERC20Permit.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

File 7 of 15 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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");

        (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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

File 8 of 15 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

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) {
        return msg.data;
    }
}

File 9 of 15 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (security/ReentrancyGuard.sol)

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 making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

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

File 10 of 15 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

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() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        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 {
        _transferOwnership(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");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 11 of 15 : SafeERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.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'
        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));
        }
    }

    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @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
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

File 12 of 15 : IOFTV2.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

import "./ICommonOFT.sol";

/**
 * @dev Interface of the IOFT core standard
 */
interface IOFTV2 is ICommonOFT {

    /**
     * @dev send `_amount` amount of token to (`_dstChainId`, `_toAddress`) from `_from`
     * `_from` the owner of token
     * `_dstChainId` the destination chain identifier
     * `_toAddress` can be any size depending on the `dstChainId`.
     * `_amount` the quantity of tokens in wei
     * `_refundAddress` the address LayerZero refunds if too much message fee is sent
     * `_zroPaymentAddress` set to address(0x0) if not paying in ZRO (LayerZero Token)
     * `_adapterParams` is a flexible bytes array to indicate messaging adapter services
     */
    function sendFrom(address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount, LzCallParams calldata _callParams) external payable;

    function sendAndCall(address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount, bytes calldata _payload, uint64 _dstGasForCall, LzCallParams calldata _callParams) external payable;
}

File 13 of 15 : IOFTWithFee.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

import "../ICommonOFT.sol";

/**
 * @dev Interface of the IOFT core standard
 */
interface IOFTWithFee is ICommonOFT {

    /**
     * @dev send `_amount` amount of token to (`_dstChainId`, `_toAddress`) from `_from`
     * `_from` the owner of token
     * `_dstChainId` the destination chain identifier
     * `_toAddress` can be any size depending on the `dstChainId`.
     * `_amount` the quantity of tokens in wei
     * `_minAmount` the minimum amount of tokens to receive on dstChain
     * `_refundAddress` the address LayerZero refunds if too much message fee is sent
     * `_zroPaymentAddress` set to address(0x0) if not paying in ZRO (LayerZero Token)
     * `_adapterParams` is a flexible bytes array to indicate messaging adapter services
     */
    function sendFrom(address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount, uint _minAmount, LzCallParams calldata _callParams) external payable;

    function sendAndCall(address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount, uint _minAmount, bytes calldata _payload, uint64 _dstGasForCall, LzCallParams calldata _callParams) external payable;
}

File 14 of 15 : IOFT.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

import "./IOFTCore.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

/**
 * @dev Interface of the OFT standard
 */
interface IOFT is IOFTCore, IERC20 {

}

File 15 of 15 : IOFTWrapper.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@layerzerolabs/solidity-examples/contracts/token/oft/v2/IOFTV2.sol";

interface IOFTWrapper {
    event WrapperFees(bytes2 indexed partnerId, address token, uint256 wrapperFee, uint256 callerFee);
    event WrapperFeeWithdrawn(address indexed oft, address to, uint256 amount);

    struct FeeObj {
        uint256 callerBps;
        address caller;
        bytes2 partnerId;
    }

    function sendOFT(
        address _oft,
        uint16 _dstChainId,
        bytes calldata _toAddress,
        uint _amount,
        uint256 _minAmount,
        address payable _refundAddress,
        address _zroPaymentAddress,
        bytes calldata _adapterParams,
        FeeObj calldata _feeObj
    ) external payable;

    function sendOFTV2(
        address _oft,
        uint16 _dstChainId,
        bytes32 _toAddress,
        uint _amount,
        uint256 _minAmount,
        IOFTV2.LzCallParams calldata _callParams,
        FeeObj calldata _feeObj
    ) external payable;

    function sendProxyOFTV2(
        address _proxyOft,
        uint16 _dstChainId,
        bytes32 _toAddress,
        uint _amount,
        uint256 _minAmount,
        IOFTV2.LzCallParams calldata _callParams,
        FeeObj calldata _feeObj
    ) external payable;

    function sendProxyOFTFeeV2(
        address _proxyOft,
        uint16 _dstChainId,
        bytes32 _toAddress,
        uint _amount,
        uint256 _minAmount,
        IOFTV2.LzCallParams calldata _callParams,
        FeeObj calldata _feeObj
    ) external payable;

    function getAmountAndFees(
        address _oft,
        uint256 _amount,
        uint256 _callerBps
    )
        external
        view
        returns (
            uint256 amount,
            uint256 wrapperFee,
            uint256 callerFee
        );

    function estimateSendFee(
        address _oft,
        uint16 _dstChainId,
        bytes calldata _toAddress,
        uint _amount,
        bool _useZro,
        bytes calldata _adapterParams,
        FeeObj calldata _feeObj
    ) external view returns (uint nativeFee, uint zroFee);

    function estimateSendFeeV2(
        address _oft,
        uint16 _dstChainId,
        bytes32 _toAddress,
        uint _amount,
        bool _useZro,
        bytes calldata _adapterParams,
        FeeObj calldata _feeObj
    ) external view returns (uint nativeFee, uint zroFee);
}

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

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"uint256","name":"_defaultBps","type":"uint256"}],"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":"oft","type":"address"},{"indexed":false,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"WrapperFeeWithdrawn","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes2","name":"partnerId","type":"bytes2"},{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"wrapperFee","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"callerFee","type":"uint256"}],"name":"WrapperFees","type":"event"},{"inputs":[],"name":"BPS_DENOMINATOR","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_UINT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"defaultBps","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_oft","type":"address"},{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"bytes","name":"_toAddress","type":"bytes"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bool","name":"_useZro","type":"bool"},{"internalType":"bytes","name":"_adapterParams","type":"bytes"},{"components":[{"internalType":"uint256","name":"callerBps","type":"uint256"},{"internalType":"address","name":"caller","type":"address"},{"internalType":"bytes2","name":"partnerId","type":"bytes2"}],"internalType":"struct IOFTWrapper.FeeObj","name":"_feeObj","type":"tuple"}],"name":"estimateSendFee","outputs":[{"internalType":"uint256","name":"nativeFee","type":"uint256"},{"internalType":"uint256","name":"zroFee","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_oft","type":"address"},{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"bytes32","name":"_toAddress","type":"bytes32"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bool","name":"_useZro","type":"bool"},{"internalType":"bytes","name":"_adapterParams","type":"bytes"},{"components":[{"internalType":"uint256","name":"callerBps","type":"uint256"},{"internalType":"address","name":"caller","type":"address"},{"internalType":"bytes2","name":"partnerId","type":"bytes2"}],"internalType":"struct IOFTWrapper.FeeObj","name":"_feeObj","type":"tuple"}],"name":"estimateSendFeeV2","outputs":[{"internalType":"uint256","name":"nativeFee","type":"uint256"},{"internalType":"uint256","name":"zroFee","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint256","name":"_callerBps","type":"uint256"}],"name":"getAmountAndFees","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"wrapperFee","type":"uint256"},{"internalType":"uint256","name":"callerFee","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"oftBps","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_oft","type":"address"},{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"bytes","name":"_toAddress","type":"bytes"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint256","name":"_minAmount","type":"uint256"},{"internalType":"address payable","name":"_refundAddress","type":"address"},{"internalType":"address","name":"_zroPaymentAddress","type":"address"},{"internalType":"bytes","name":"_adapterParams","type":"bytes"},{"components":[{"internalType":"uint256","name":"callerBps","type":"uint256"},{"internalType":"address","name":"caller","type":"address"},{"internalType":"bytes2","name":"partnerId","type":"bytes2"}],"internalType":"struct IOFTWrapper.FeeObj","name":"_feeObj","type":"tuple"}],"name":"sendOFT","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_oft","type":"address"},{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"bytes32","name":"_toAddress","type":"bytes32"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint256","name":"_minAmount","type":"uint256"},{"components":[{"internalType":"address payable","name":"refundAddress","type":"address"},{"internalType":"address","name":"zroPaymentAddress","type":"address"},{"internalType":"bytes","name":"adapterParams","type":"bytes"}],"internalType":"struct ICommonOFT.LzCallParams","name":"_callParams","type":"tuple"},{"components":[{"internalType":"uint256","name":"callerBps","type":"uint256"},{"internalType":"address","name":"caller","type":"address"},{"internalType":"bytes2","name":"partnerId","type":"bytes2"}],"internalType":"struct IOFTWrapper.FeeObj","name":"_feeObj","type":"tuple"}],"name":"sendOFTFeeV2","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_oft","type":"address"},{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"bytes32","name":"_toAddress","type":"bytes32"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint256","name":"_minAmount","type":"uint256"},{"components":[{"internalType":"address payable","name":"refundAddress","type":"address"},{"internalType":"address","name":"zroPaymentAddress","type":"address"},{"internalType":"bytes","name":"adapterParams","type":"bytes"}],"internalType":"struct ICommonOFT.LzCallParams","name":"_callParams","type":"tuple"},{"components":[{"internalType":"uint256","name":"callerBps","type":"uint256"},{"internalType":"address","name":"caller","type":"address"},{"internalType":"bytes2","name":"partnerId","type":"bytes2"}],"internalType":"struct IOFTWrapper.FeeObj","name":"_feeObj","type":"tuple"}],"name":"sendOFTV2","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_proxyOft","type":"address"},{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"bytes","name":"_toAddress","type":"bytes"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint256","name":"_minAmount","type":"uint256"},{"internalType":"address payable","name":"_refundAddress","type":"address"},{"internalType":"address","name":"_zroPaymentAddress","type":"address"},{"internalType":"bytes","name":"_adapterParams","type":"bytes"},{"components":[{"internalType":"uint256","name":"callerBps","type":"uint256"},{"internalType":"address","name":"caller","type":"address"},{"internalType":"bytes2","name":"partnerId","type":"bytes2"}],"internalType":"struct IOFTWrapper.FeeObj","name":"_feeObj","type":"tuple"}],"name":"sendProxyOFT","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_proxyOft","type":"address"},{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"bytes32","name":"_toAddress","type":"bytes32"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint256","name":"_minAmount","type":"uint256"},{"components":[{"internalType":"address payable","name":"refundAddress","type":"address"},{"internalType":"address","name":"zroPaymentAddress","type":"address"},{"internalType":"bytes","name":"adapterParams","type":"bytes"}],"internalType":"struct ICommonOFT.LzCallParams","name":"_callParams","type":"tuple"},{"components":[{"internalType":"uint256","name":"callerBps","type":"uint256"},{"internalType":"address","name":"caller","type":"address"},{"internalType":"bytes2","name":"partnerId","type":"bytes2"}],"internalType":"struct IOFTWrapper.FeeObj","name":"_feeObj","type":"tuple"}],"name":"sendProxyOFTFeeV2","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_proxyOft","type":"address"},{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"bytes32","name":"_toAddress","type":"bytes32"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint256","name":"_minAmount","type":"uint256"},{"components":[{"internalType":"address payable","name":"refundAddress","type":"address"},{"internalType":"address","name":"zroPaymentAddress","type":"address"},{"internalType":"bytes","name":"adapterParams","type":"bytes"}],"internalType":"struct ICommonOFT.LzCallParams","name":"_callParams","type":"tuple"},{"components":[{"internalType":"uint256","name":"callerBps","type":"uint256"},{"internalType":"address","name":"caller","type":"address"},{"internalType":"bytes2","name":"partnerId","type":"bytes2"}],"internalType":"struct IOFTWrapper.FeeObj","name":"_feeObj","type":"tuple"}],"name":"sendProxyOFTV2","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_defaultBps","type":"uint256"}],"name":"setDefaultBps","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_bps","type":"uint256"}],"name":"setOFTBps","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_oft","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdrawFees","outputs":[],"stateMutability":"nonpayable","type":"function"}]

Deployed Bytecode

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Block Transaction Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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Validator Index Block Amount
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Transaction Hash Block Value Eth2 PubKey Valid
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Chain Token Portfolio % Price Amount Value
ARB6.22%$58.24116.6309$6,792.58
ARB4.96%$0.00002272,016,581.9178$5,415.85
ARB4.64%$100,9820.0502$5,072.31
ARB2.88%$0.06491548,532.0014$3,150.45
ARB2.45%$1.012,654.8969$2,678.79
ARB1.36%$0.06744122,031.1074$1,485.8
ARB0.85%$0.457362,035.2514$930.84
ARB0.84%$17.5952.3459$920.76
ARB0.81%$4,005.070.2214$886.66
ARB0.48%$2.84184.6498$524.41
ARB0.32%$2,626.60.1351$354.96
ARB0.07%$0.0125256,037.5316$75.62
ARB0.05%$0.000041,414,443.239$56.07
ARB0.03%$0.0255461,393.1006$35.59
ARB0.02%<$0.00000177,329,213.079$16.4
ARB0.01%$0.00042826,803.0752$11.47
ARB<0.01%$0.00051615,620.2877$8.07
ARB<0.01%$0.003731,972.9316$7.36
ARB<0.01%$0.021558299.2233$6.45
ARB<0.01%$0.010238390.9193$4
ARB<0.01%$0.0018331,870.3717$3.43
ARB<0.01%$0.04887531.9091$1.56
ARB<0.01%<$0.00000117,490,948.8228$0.7538
ETH4.52%$0.00002248,064,246.0079$4,938.96
ETH3.92%$0.22230519,270.1649$4,283.85
ETH3.25%$13,540.1652$3,550.79
ETH2.97%$3,685.840.8814$3,248.71
ETH1.79%$0.9982221,961.8861$1,958.4
ETH1.24%$11,354.4253$1,357.13
ETH1.04%$0.2411784,713.1025$1,136.7
ETH0.99%$3,965.630.2735$1,084.67
ETH0.72%$4,396.550.1796$789.53
ETH0.69%$2.84265.4951$754.01
ETH0.59%$58.1811.0979$645.68
ETH0.59%$101,1750.00631949$639.37
ETH0.51%$0.00823268,298.599$562.26
ETH0.37%$0.02944413,736.8702$404.48
ETH0.34%$0.0649165,726.0546$371.71
ETH0.31%$0.0429617,939.7324$341.1
ETH0.29%$2,626.60.1216$319.49
ETH0.27%$1292.5258$293.11
ETH0.17%$1.57120.2407$189.22
ETH0.14%$0.0215147,169.5399$154.25
ETH0.09%$0.0324343,083.366$100.01
ETH0.08%$0.00472118,193.197$85.89
ETH0.06%$0.00682710,153.5464$69.32
ETH0.05%$0.000371139,634.9929$51.77
ETH0.04%$0.000436112,327.3887$48.96
ETH0.04%$0.000041,204,147.358$47.67
ETH0.04%$0.54581884.8545$46.32
ETH0.04%$0.0254331,707.7374$43.43
ETH0.04%$0.0102164,034.3119$41.21
ETH0.03%<$0.000001133,877,097.0444$28.38
ETH0.02%$0.0019419,836.2084$19.1
ETH0.02%$1.3313.6888$18.21
ETH0.01%$0.0062452,326.0152$14.53
ETH0.01%$0.0023026,124.1796$14.1
ETH0.01%$3.014.5126$13.58
ETH<0.01%$0.0002149,158.9664$10.35
ETH<0.01%$0.9720883.3219$3.23
ETH<0.01%$0.001831,598.0017$2.92
ETH<0.01%$0.03659964.1798$2.35
ETH<0.01%$12.1864$2.2
ETH<0.01%$1.291.6272$2.1
ETH<0.01%$0.04865730.1384$1.47
ETH<0.01%$0.9948811.2264$1.22
ETH<0.01%<$0.0000016,075,496.5792$0.5221
ETH<0.01%$0.0418037.3342$0.3065
ETH<0.01%$108.570.00152661$0.1657
FTM9.98%$0.99534610,957.5147$10,906.52
FTM1.85%$12,014.0266$2,016.04
FTM1.25%$3,687.680.3702$1,365.22
FTM1.21%$0.9961131,323.1104$1,317.97
FTM0.65%$0.00823685,947.3785$707.83
FTM0.49%$100,4770.00533465$536.01
FTM0.27%$0.067834,412.1509$299.28
FTM0.26%$0.995701290.5692$289.32
FTM<0.01%$0.9981281.9302$1.93
FTM<0.01%$0.9741091.2558$1.22
BSC3.21%$0.00002176,326,094.5696$3,510.65
BSC2.39%$693.983.7549$2,605.86
BSC1.97%$2.84759.2042$2,156.14
BSC1.97%$0.06767931,806.6728$2,152.64
BSC1.59%$0.2223057,823.0444$1,739.1
BSC1.43%$1.58986.8524$1,559.23
BSC0.86%$0.998222944.5153$942.84
BSC0.60%$0.06491610,118.0765$656.83
BSC0.60%$2,626.60.2491$654.21
BSC0.55%$0.452111,334.3892$603.29
BSC0.23%$0.0429615,897.9363$253.38
BSC0.15%$0.00788921,205.541$167.29
BSC0.11%$0.0125149,244.1339$115.68
BSC0.04%$0.000041,159,907.6259$45.92
BSC0.04%$0.0062456,852.2203$42.8
BSC0.04%$0.0324341,247.1422$40.45
BSC0.02%$0.0102162,176.115$22.23
BSC0.02%<$0.00000181,666,698.6374$17.31
BSC<0.01%$0.00042723,807.3817$10.16
BSC<0.01%$0.00051612,953.178$6.69
BSC<0.01%$0.001832,039.7428$3.73
BSC<0.01%$0.001611289.8454$0.4669
BSC<0.01%$108.570.00287873$0.3125
AVAX11.95%$100,8690.1295$13,060.38
AVAX1.42%$0.4547463,414.011$1,552.51
AVAX1.17%$0.991061,285.138$1,273.65
AVAX0.01%$0.00042827,266.4246$11.67
ZKEVM1.24%$2.85475.5207$1,355.23
OP0.80%$1868.0986$869.83
OP<0.01%$0.04862317.951$0.8728
POL0.17%$0.00787122,992.5326$180.97
POL0.03%$0.000039904,076.6399$35.52
POL0.01%$0.00043627,782.0135$12.11
POL<0.01%$0.001929132.09$0.2547
POL<0.01%$0.000262500$0.1307
ZKSYNC0.02%$3,695.190.00465267$17.19
BASE<0.01%$3,690.410.00036256$1.34
MANTLE<0.01%$1.110.00119886$0.001335
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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.