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0xF5F7231073b3B41c04BA655e1a7438b1a7b29c27

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Add Liquidity47628622025-01-21 3:36:5949 mins ago1737430619IN
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Remove Liquidity47377272025-01-20 22:11:526 hrs ago1737411112IN
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Add Liquidity47377262025-01-20 22:11:526 hrs ago1737411112IN
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Latest 12 internal transactions

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42679922025-01-17 13:38:253 days ago1737121105
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39904282025-01-15 12:20:575 days ago1736943657
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0xbfE77A62...6BF282c18
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
RouterV2

Compiler Version
v0.8.13+commit.abaa5c0e

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 1 : RouterV2.sol
/**
 *Submitted for verification at FtmScan.com on 2022-02-20
*/

// SPDX-License-Identifier: MIT
// ftm.guru's extension of Solidly's periphery (Router)
// https://github.com/andrecronje/solidly/blob/master/contracts/BaseV1-periphery.sol
// BaseV1Router02.sol : Supporting Fee-on-transfer Tokens
// https://github.com/ftm1337/solidly-with-FoT/blob/master/contracts/BaseV1-periphery.sol

pragma solidity 0.8.13;


interface IBaseV1Factory {
    function allPairsLength() external view returns (uint);
    function isPair(address pair) external view returns (bool);
    function pairCodeHash() external pure returns (bytes32);
    function getPair(address tokenA, address token, bool stable) external view returns (address);
    function createPair(address tokenA, address tokenB, bool stable) external returns (address pair);
}

interface IBaseV1Pair {
    function transferFrom(address src, address dst, uint amount) external returns (bool);
    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function burn(address to) external returns (uint amount0, uint amount1);
    function mint(address to) external returns (uint liquidity);
    function getReserves() external view returns (uint _reserve0, uint _reserve1, uint _blockTimestampLast);
    function getAmountOut(uint, address) external view returns (uint);
}

interface erc20 {
    function totalSupply() external view returns (uint256);
    function transfer(address recipient, uint amount) external returns (bool);
    function decimals() external view returns (uint8);
    function symbol() external view returns (string memory);
    function balanceOf(address) external view returns (uint);
    function transferFrom(address sender, address recipient, uint amount) external returns (bool);
    function approve(address spender, uint value) external returns (bool);
}

interface IPairFactory {
    function getFee(bool _stable) external view returns(uint256);
    function MAX_REFERRAL_FEE() external view returns(uint256);
}


library Math {
    function min(uint a, uint b) internal pure returns (uint) {
        return a < b ? a : b;
    }
    function sqrt(uint y) internal pure returns (uint z) {
        if (y > 3) {
            z = y;
            uint x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
    }
    function sub(uint x, uint y) internal pure returns (uint z) {
        require((z = x - y) <= x, 'Math: Sub-underflow');
    }
}

interface IWETH {
    function deposit() external payable;
    function transfer(address to, uint value) external returns (bool);
    function withdraw(uint) external;
}

// Experimental Extension [ftm.guru/solidly/BaseV1Router02]
// contract BaseV1Router02 is BaseV1Router01
// with Support for Fee-on-Transfer Tokens
contract RouterV2 {

	using Math for uint;

    struct route {
        address from;
        address to;
        bool stable;
    }

    address public immutable factory;
    IWETH public immutable wETH;
    uint internal constant MINIMUM_LIQUIDITY = 10**3;
    bytes32 immutable pairCodeHash;

    
    // swap event for the referral system
    event Swap(address indexed sender,uint amount0In,address _tokenIn, address indexed to, bool stable);  

    modifier ensure(uint deadline) {
        require(deadline >= block.timestamp, 'BaseV1Router: EXPIRED');
        _;
    }

    constructor(address _factory, address _wETH) {
        factory = _factory;
        pairCodeHash = IBaseV1Factory(_factory).pairCodeHash();
        wETH = IWETH(_wETH);
    }

    receive() external payable {
        assert(msg.sender == address(wETH)); // only accept ETH via fallback from the WETH contract
    }

    function sortTokens(address tokenA, address tokenB) public pure returns (address token0, address token1) {
        require(tokenA != tokenB, 'BaseV1Router: IDENTICAL_ADDRESSES');
        (token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
        require(token0 != address(0), 'BaseV1Router: ZERO_ADDRESS');
    }

    // calculates the CREATE2 address for a pair without making any external calls
    function pairFor(address tokenA, address tokenB, bool stable) public view returns (address pair) {
        (address token0, address token1) = sortTokens(tokenA, tokenB);
        pair = address(uint160(uint256(keccak256(abi.encodePacked(
            hex'ff',
            factory,
            keccak256(abi.encodePacked(token0, token1, stable)),
            pairCodeHash // init code hash
        )))));
    }

    // given some amount of an asset and pair reserves, returns an equivalent amount of the other asset
    function quoteLiquidity(uint amountA, uint reserveA, uint reserveB) internal pure returns (uint amountB) {
        require(amountA > 0, 'BaseV1Router: INSUFFICIENT_AMOUNT');
        require(reserveA > 0 && reserveB > 0, 'BaseV1Router: INSUFFICIENT_LIQUIDITY');
        amountB = amountA * reserveB / reserveA;
    }

    // fetches and sorts the reserves for a pair
    function getReserves(address tokenA, address tokenB, bool stable) public view returns (uint reserveA, uint reserveB) {
        (address token0,) = sortTokens(tokenA, tokenB);
        (uint reserve0, uint reserve1,) = IBaseV1Pair(pairFor(tokenA, tokenB, stable)).getReserves();
        (reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
    }

    // performs chained getAmountOut calculations on any number of pairs
    function getAmountOut(uint amountIn, address tokenIn, address tokenOut) public view returns (uint amount, bool stable) {
        address pair = pairFor(tokenIn, tokenOut, true);
        uint amountStable;
        uint amountVolatile;
        if (IBaseV1Factory(factory).isPair(pair)) {
            amountStable = IBaseV1Pair(pair).getAmountOut(amountIn, tokenIn);
        }
        pair = pairFor(tokenIn, tokenOut, false);
        if (IBaseV1Factory(factory).isPair(pair)) {
            amountVolatile = IBaseV1Pair(pair).getAmountOut(amountIn, tokenIn);
        }
        return amountStable > amountVolatile ? (amountStable, true) : (amountVolatile, false);
    }

    // performs chained getAmountOut calculations on any number of pairs
    function getAmountsOut(uint amountIn, route[] memory routes) public view returns (uint[] memory amounts) {
        require(routes.length >= 1, 'BaseV1Router: INVALID_PATH');
        amounts = new uint[](routes.length+1);
        amounts[0] = amountIn;
        for (uint i = 0; i < routes.length; i++) {
            address pair = pairFor(routes[i].from, routes[i].to, routes[i].stable);
            if (IBaseV1Factory(factory).isPair(pair)) {
                amounts[i+1] = IBaseV1Pair(pair).getAmountOut(amounts[i], routes[i].from);
            }
        }
    }

    function isPair(address pair) external view returns (bool) {
        return IBaseV1Factory(factory).isPair(pair);
    }


    function quoteAddLiquidity(
        address tokenA,
        address tokenB,
        bool stable,
        uint amountADesired,
        uint amountBDesired
    ) external view returns (uint amountA, uint amountB, uint liquidity) {
        // create the pair if it doesn't exist yet
        address _pair = IBaseV1Factory(factory).getPair(tokenA, tokenB, stable);
        (uint reserveA, uint reserveB) = (0,0);
        uint _totalSupply = 0;
        if (_pair != address(0)) {
            _totalSupply = erc20(_pair).totalSupply();
            (reserveA, reserveB) = getReserves(tokenA, tokenB, stable);
        }
        if (reserveA == 0 && reserveB == 0) {
            (amountA, amountB) = (amountADesired, amountBDesired);
            liquidity = Math.sqrt(amountA * amountB) - MINIMUM_LIQUIDITY;
        } else {

            uint amountBOptimal = quoteLiquidity(amountADesired, reserveA, reserveB);
            if (amountBOptimal <= amountBDesired) {
                (amountA, amountB) = (amountADesired, amountBOptimal);
                liquidity = Math.min(amountA * _totalSupply / reserveA, amountB * _totalSupply / reserveB);
            } else {
                uint amountAOptimal = quoteLiquidity(amountBDesired, reserveB, reserveA);
                (amountA, amountB) = (amountAOptimal, amountBDesired);
                liquidity = Math.min(amountA * _totalSupply / reserveA, amountB * _totalSupply / reserveB);
            }
        }
    }

    function quoteRemoveLiquidity(
        address tokenA,
        address tokenB,
        bool stable,
        uint liquidity
    ) external view returns (uint amountA, uint amountB) {
        // create the pair if it doesn't exist yet
        address _pair = IBaseV1Factory(factory).getPair(tokenA, tokenB, stable);

        if (_pair == address(0)) {
            return (0,0);
        }

        (uint reserveA, uint reserveB) = getReserves(tokenA, tokenB, stable);
        uint _totalSupply = erc20(_pair).totalSupply();

        amountA = liquidity * reserveA / _totalSupply; // using balances ensures pro-rata distribution
        amountB = liquidity * reserveB / _totalSupply; // using balances ensures pro-rata distribution

    }

    function _addLiquidity(
        address tokenA,
        address tokenB,
        bool stable,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin
    ) internal returns (uint amountA, uint amountB) {
        require(amountADesired >= amountAMin);
        require(amountBDesired >= amountBMin);
        // create the pair if it doesn't exist yet
        address _pair = IBaseV1Factory(factory).getPair(tokenA, tokenB, stable);
        if (_pair == address(0)) {
            _pair = IBaseV1Factory(factory).createPair(tokenA, tokenB, stable);
        }
        (uint reserveA, uint reserveB) = getReserves(tokenA, tokenB, stable);
        if (reserveA == 0 && reserveB == 0) {
            (amountA, amountB) = (amountADesired, amountBDesired);
        } else {
            uint amountBOptimal = quoteLiquidity(amountADesired, reserveA, reserveB);
            if (amountBOptimal <= amountBDesired) {
                require(amountBOptimal >= amountBMin, 'BaseV1Router: INSUFFICIENT_B_AMOUNT');
                (amountA, amountB) = (amountADesired, amountBOptimal);
            } else {
                uint amountAOptimal = quoteLiquidity(amountBDesired, reserveB, reserveA);
                assert(amountAOptimal <= amountADesired);
                require(amountAOptimal >= amountAMin, 'BaseV1Router: INSUFFICIENT_A_AMOUNT');
                (amountA, amountB) = (amountAOptimal, amountBDesired);
            }
        }
    }

    function addLiquidity(
        address tokenA,
        address tokenB,
        bool stable,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external ensure(deadline) returns (uint amountA, uint amountB, uint liquidity) {
        (amountA, amountB) = _addLiquidity(tokenA, tokenB, stable, amountADesired, amountBDesired, amountAMin, amountBMin);
        address pair = pairFor(tokenA, tokenB, stable);
        _safeTransferFrom(tokenA, msg.sender, pair, amountA);
        _safeTransferFrom(tokenB, msg.sender, pair, amountB);
        liquidity = IBaseV1Pair(pair).mint(to);
    }

    function addLiquidityETH(
        address token,
        bool stable,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable ensure(deadline) returns (uint amountToken, uint amountETH, uint liquidity) {
        (amountToken, amountETH) = _addLiquidity(
            token,
            address(wETH),
            stable,
            amountTokenDesired,
            msg.value,
            amountTokenMin,
            amountETHMin
        );
        address pair = pairFor(token, address(wETH), stable);
        _safeTransferFrom(token, msg.sender, pair, amountToken);
        wETH.deposit{value: amountETH}();
        assert(wETH.transfer(pair, amountETH));
        liquidity = IBaseV1Pair(pair).mint(to);
        // refund dust ETH, if any
        if (msg.value > amountETH) _safeTransferETH(msg.sender, msg.value - amountETH);
    }

    // **** REMOVE LIQUIDITY ****
    function removeLiquidity(
        address tokenA,
        address tokenB,
        bool stable,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) public ensure(deadline) returns (uint amountA, uint amountB) {
        address pair = pairFor(tokenA, tokenB, stable);
        require(IBaseV1Pair(pair).transferFrom(msg.sender, pair, liquidity)); // send liquidity to pair
        (uint amount0, uint amount1) = IBaseV1Pair(pair).burn(to);
        (address token0,) = sortTokens(tokenA, tokenB);
        (amountA, amountB) = tokenA == token0 ? (amount0, amount1) : (amount1, amount0);
        require(amountA >= amountAMin, 'BaseV1Router: INSUFFICIENT_A_AMOUNT');
        require(amountB >= amountBMin, 'BaseV1Router: INSUFFICIENT_B_AMOUNT');
    }

    function removeLiquidityETH(
        address token,
        bool stable,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) public ensure(deadline) returns (uint amountToken, uint amountETH) {
        (amountToken, amountETH) = removeLiquidity(
            token,
            address(wETH),
            stable,
            liquidity,
            amountTokenMin,
            amountETHMin,
            address(this),
            deadline
        );
        _safeTransfer(token, to, amountToken);
        wETH.withdraw(amountETH);
        _safeTransferETH(to, amountETH);
    }

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        bool stable,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB) {
        address pair = pairFor(tokenA, tokenB, stable);
        {
            uint value = approveMax ? type(uint).max : liquidity;
            IBaseV1Pair(pair).permit(msg.sender, address(this), value, deadline, v, r, s);
        }

        (amountA, amountB) = removeLiquidity(tokenA, tokenB, stable, liquidity, amountAMin, amountBMin, to, deadline);
    }

    function removeLiquidityETHWithPermit(
        address token,
        bool stable,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH) {
        address pair = pairFor(token, address(wETH), stable);
        uint value = approveMax ? type(uint).max : liquidity;
        IBaseV1Pair(pair).permit(msg.sender, address(this), value, deadline, v, r, s);
        (amountToken, amountETH) = removeLiquidityETH(token, stable, liquidity, amountTokenMin, amountETHMin, to, deadline);
    }

    // **** SWAP ****
    // requires the initial amount to have already been sent to the first pair
    function _swap(uint[] memory amounts, route[] memory routes, address _to) internal virtual {
        for (uint i = 0; i < routes.length; i++) {
            (address token0,) = sortTokens(routes[i].from, routes[i].to);
            uint amountOut = amounts[i + 1];
            (uint amount0Out, uint amount1Out) = routes[i].from == token0 ? (uint(0), amountOut) : (amountOut, uint(0));
            address to = i < routes.length - 1 ? pairFor(routes[i+1].from, routes[i+1].to, routes[i+1].stable) : _to;
            IBaseV1Pair(pairFor(routes[i].from, routes[i].to, routes[i].stable)).swap(
                amount0Out, amount1Out, to, new bytes(0)
            );

            emit Swap(msg.sender,amounts[i],routes[i].from, _to, routes[i].stable); 
        }
    }

    function swapExactTokensForTokensSimple(
        uint amountIn,
        uint amountOutMin,
        address tokenFrom,
        address tokenTo,
        bool stable,
        address to,
        uint deadline
    ) external ensure(deadline) returns (uint[] memory amounts) {
        route[] memory routes = new route[](1);
        routes[0].from = tokenFrom;
        routes[0].to = tokenTo;
        routes[0].stable = stable;
        amounts = getAmountsOut(amountIn, routes);
        require(amounts[amounts.length - 1] >= amountOutMin, 'BaseV1Router: INSUFFICIENT_OUTPUT_AMOUNT');
        _safeTransferFrom(
            routes[0].from, msg.sender, pairFor(routes[0].from, routes[0].to, routes[0].stable), amounts[0]
        );
        _swap(amounts, routes, to);
    }

    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        route[] calldata routes,
        address to,
        uint deadline
    ) external ensure(deadline) returns (uint[] memory amounts) {
        amounts = getAmountsOut(amountIn, routes);
        require(amounts[amounts.length - 1] >= amountOutMin, 'BaseV1Router: INSUFFICIENT_OUTPUT_AMOUNT');
        _safeTransferFrom(
            routes[0].from, msg.sender, pairFor(routes[0].from, routes[0].to, routes[0].stable), amounts[0]
        );
        _swap(amounts, routes, to);
    }

    function swapExactETHForTokens(uint amountOutMin, route[] calldata routes, address to, uint deadline) external payable ensure(deadline) returns (uint[] memory amounts) {
        require(routes[0].from == address(wETH), 'BaseV1Router: INVALID_PATH');
        amounts = getAmountsOut(msg.value, routes);
        require(amounts[amounts.length - 1] >= amountOutMin, 'BaseV1Router: INSUFFICIENT_OUTPUT_AMOUNT');
        wETH.deposit{value: amounts[0]}();
        assert(wETH.transfer(pairFor(routes[0].from, routes[0].to, routes[0].stable), amounts[0]));
        _swap(amounts, routes, to);
    }

    function swapExactTokensForETH(uint amountIn, uint amountOutMin, route[] calldata routes, address to, uint deadline)
    external
    ensure(deadline)
    returns (uint[] memory amounts)
    {
        require(routes[routes.length - 1].to == address(wETH), 'BaseV1Router: INVALID_PATH');
        amounts = getAmountsOut(amountIn, routes);
        require(amounts[amounts.length - 1] >= amountOutMin, 'BaseV1Router: INSUFFICIENT_OUTPUT_AMOUNT');
        _safeTransferFrom(
            routes[0].from, msg.sender, pairFor(routes[0].from, routes[0].to, routes[0].stable), amounts[0]
        );
        _swap(amounts, routes, address(this));
        wETH.withdraw(amounts[amounts.length - 1]);
        _safeTransferETH(to, amounts[amounts.length - 1]);
    }

    function UNSAFE_swapExactTokensForTokens(
        uint[] memory amounts,
        route[] calldata routes,
        address to,
        uint deadline
    ) external ensure(deadline) returns (uint[] memory) {
        _safeTransferFrom(routes[0].from, msg.sender, pairFor(routes[0].from, routes[0].to, routes[0].stable), amounts[0]);
        _swap(amounts, routes, to);
        return amounts;
    }

    function _safeTransferETH(address to, uint value) internal {
        (bool success,) = to.call{value:value}(new bytes(0));
        require(success, 'TransferHelper: ETH_TRANSFER_FAILED');
    }

    function _safeTransfer(address token, address to, uint256 value) internal {
        require(token.code.length > 0);
        (bool success, bytes memory data) =
        token.call(abi.encodeWithSelector(erc20.transfer.selector, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))));
    }

    function _safeTransferFrom(address token, address from, address to, uint256 value) internal {
        require(token.code.length > 0);
        (bool success, bytes memory data) =
        token.call(abi.encodeWithSelector(erc20.transferFrom.selector, from, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))));
    }

    // Experimental Extension [ETH.guru/solidly/BaseV1Router02]

    // **** REMOVE LIQUIDITY (supporting fee-on-transfer tokens)****
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        bool stable,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) public ensure(deadline) returns (uint amountToken, uint amountETH) {
        (amountToken, amountETH) = removeLiquidity(
            token,
            address(wETH),
            stable,
            liquidity,
            amountTokenMin,
            amountETHMin,
            address(this),
            deadline
        );
        _safeTransfer(token, to, erc20(token).balanceOf(address(this)));
        wETH.withdraw(amountETH);
        _safeTransferETH(to, amountETH);
    }
    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        bool stable,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH) {
        address pair = pairFor(token, address(wETH), stable);
        uint value = approveMax ? type(uint).max : liquidity;
        IBaseV1Pair(pair).permit(msg.sender, address(this), value, deadline, v, r, s);
        (amountToken, amountETH) = removeLiquidityETHSupportingFeeOnTransferTokens(
            token, stable, liquidity, amountTokenMin, amountETHMin, to, deadline
        );
    }
    
    // **** SWAP (supporting fee-on-transfer tokens) ****
    // requires the initial amount to have already been sent to the first pair
    function _swapSupportingFeeOnTransferTokens(route[] calldata routes, address _to) internal virtual {
        for (uint i; i < routes.length; i++) {
        	(address input, address output) = (routes[i].from, routes[i].to);
            (address token0,) = sortTokens(input, output);
            IBaseV1Pair pair = IBaseV1Pair(pairFor(routes[i].from, routes[i].to, routes[i].stable));
            uint amountInput;
            uint amountOutput;
            { // scope to avoid stack too deep errors
            (uint reserve0, uint reserve1,) = pair.getReserves();
            (uint reserveInput,) = input == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
            amountInput = erc20(input).balanceOf(address(pair)).sub(reserveInput);
            (amountOutput,) = getAmountOut(amountInput, input, output);
            }
            (uint amount0Out, uint amount1Out) = input == token0 ? (uint(0), amountOutput) : (amountOutput, uint(0));
            address to = i < routes.length - 1 ? pairFor(routes[i+1].from, routes[i+1].to, routes[i+1].stable) : _to;
            pair.swap(amount0Out, amount1Out, to, new bytes(0));

            bool _stable = routes[i].stable;
            emit Swap(msg.sender,amountInput,input,_to,_stable);  
        }
    }
    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        route[] calldata routes,
        address to,
        uint deadline
    ) external ensure(deadline) {
        _safeTransferFrom(
        	routes[0].from,
        	msg.sender,
        	pairFor(routes[0].from, routes[0].to, routes[0].stable),
        	amountIn
        );
        uint balanceBefore = erc20(routes[routes.length - 1].to).balanceOf(to);
        _swapSupportingFeeOnTransferTokens(routes, to);
        require(
            erc20(routes[routes.length - 1].to).balanceOf(to).sub(balanceBefore) >= amountOutMin,
            'BaseV1Router: INSUFFICIENT_OUTPUT_AMOUNT'
        );
    }
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        route[] calldata routes,
        address to,
        uint deadline
    )
        external
        payable
        ensure(deadline)
    {
        require(routes[0].from == address(wETH), 'BaseV1Router: INVALID_PATH');
        uint amountIn = msg.value;
        wETH.deposit{value: amountIn}();
        assert(wETH.transfer(pairFor(routes[0].from, routes[0].to, routes[0].stable), amountIn));
        uint balanceBefore = erc20(routes[routes.length - 1].to).balanceOf(to);
        _swapSupportingFeeOnTransferTokens(routes, to);
        require(
            erc20(routes[routes.length - 1].to).balanceOf(to).sub(balanceBefore) >= amountOutMin,
            'BaseV1Router: INSUFFICIENT_OUTPUT_AMOUNT'
        );
    }
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        route[] calldata routes,
        address to,
        uint deadline
    )
        external
        ensure(deadline)
    {
        require(routes[routes.length - 1].to == address(wETH), 'BaseV1Router: INVALID_PATH');
        _safeTransferFrom(
            routes[0].from, msg.sender, pairFor(routes[0].from, routes[0].to, routes[0].stable), amountIn
        );
        _swapSupportingFeeOnTransferTokens(routes, address(this));
        uint amountOut = erc20(address(wETH)).balanceOf(address(this));
        require(amountOut >= amountOutMin, 'BaseV1Router: INSUFFICIENT_OUTPUT_AMOUNT');
        wETH.withdraw(amountOut);
        _safeTransferETH(to, amountOut);
    }
}

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

Contract Security Audit

Contract ABI

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ETH","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"bool","name":"stable","type":"bool"},{"internalType":"uint256","name":"liquidity","type":"uint256"},{"internalType":"uint256","name":"amountTokenMin","type":"uint256"},{"internalType":"uint256","name":"amountETHMin","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bool","name":"approveMax","type":"bool"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"removeLiquidityETHWithPermitSupportingFeeOnTransferTokens","outputs":[{"internalType":"uint256","name":"amountToken","type":"uint256"},{"internalType":"uint256","name":"amountETH","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenA","type":"address"},{"internalType":"address","name":"tokenB","type":"address"},{"internalType":"bool","name":"stable","type":"bool"},{"internalType":"uint256","name":"liquidity","type":"uint256"},{"internalType":"uint256","name":"amountAMin","type":"uint256"},{"internalType":"uint256","name":"amountBMin","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bool","name":"approveMax","type":"bool"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"removeLiquidityWithPermit","outputs":[{"internalType":"uint256","name":"amountA","type":"uint256"},{"internalType":"uint256","name":"amountB","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenA","type":"address"},{"internalType":"address","name":"tokenB","type":"address"}],"name":"sortTokens","outputs":[{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"components":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"bool","name":"stable","type":"bool"}],"internalType":"struct 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RouterV2.route[]","name":"routes","type":"tuple[]"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"swapExactTokensForTokensSupportingFeeOnTransferTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"wETH","outputs":[{"internalType":"contract IWETH","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

Deployed Bytecode

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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.