ETH Price: $2,478.02 (+2.57%)
 

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ETH Balance

0.008 ETH

Eth Value

$19.82 (@ $2,478.02/ETH)

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Transaction Hash
Method
Block
From
To
Withdraw Usdc226413242025-06-05 22:15:1125 hrs ago1749161711IN
0xCD2F4D09...3f9953A36
0 ETH0.000848964.08825696
Withdraw Weth226413172025-06-05 22:13:4725 hrs ago1749161627IN
0xCD2F4D09...3f9953A36
0 ETH0.000845014.40298887
Withdraw Weth226413102025-06-05 22:12:2325 hrs ago1749161543IN
0xCD2F4D09...3f9953A36
0 ETH0.000909064.78660375
Withdraw Weth226412722025-06-05 22:04:4725 hrs ago1749161087IN
0xCD2F4D09...3f9953A36
0 ETH0.000988845.20771334
Deposit Usdc226412652025-06-05 22:03:2325 hrs ago1749161003IN
0xCD2F4D09...3f9953A36
0 ETH0.000819954.9508584
Approve Usdc226412612025-06-05 22:02:3525 hrs ago1749160955IN
0xCD2F4D09...3f9953A36
0 ETH0.000312055.13005905
Withdraw Weth226412292025-06-05 21:56:1125 hrs ago1749160571IN
0xCD2F4D09...3f9953A36
0 ETH0.000880524.64642919
Deposit ETH226412122025-06-05 21:52:4725 hrs ago1749160367IN
0xCD2F4D09...3f9953A36
0.002 ETH0.000724575.00787527
Approve Weth226410912025-06-05 21:28:3525 hrs ago1749158915IN
0xCD2F4D09...3f9953A36
0 ETH0.0003782211.06671268
Approve Weth226410392025-06-05 21:18:1126 hrs ago1749158291IN
0xCD2F4D09...3f9953A36
0 ETH0.0005412115.8300529
Withdraw Usdc226338352025-06-04 21:04:352 days ago1749071075IN
0xCD2F4D09...3f9953A36
0 ETH0.001684958.11399173
Deposit Usdc226338342025-06-04 21:04:232 days ago1749071063IN
0xCD2F4D09...3f9953A36
0 ETH0.001375718.48617809
Deposit Usdc226338292025-06-04 21:03:232 days ago1749071003IN
0xCD2F4D09...3f9953A36
0 ETH0.001480928.91475125
Approve Usdc226338182025-06-04 21:01:112 days ago1749070871IN
0xCD2F4D09...3f9953A36
0 ETH0.0006448110.60059062
Deposit Usdc226337122025-06-04 20:39:592 days ago1749069599IN
0xCD2F4D09...3f9953A36
0 ETH0.0018380711.33821617
Deposit Usdc226337112025-06-04 20:39:472 days ago1749069587IN
0xCD2F4D09...3f9953A36
0 ETH0.0020146712.12773658
Approve Usdc226337032025-06-04 20:38:112 days ago1749069491IN
0xCD2F4D09...3f9953A36
0 ETH0.0007147611.75054968
Withdraw Usdc226336852025-06-04 20:34:352 days ago1749069275IN
0xCD2F4D09...3f9953A36
0 ETH0.001173995.64253517
Withdraw Weth226336592025-06-04 20:29:112 days ago1749068951IN
0xCD2F4D09...3f9953A36
0 ETH0.00115496.0810937
Deposit ETH226336452025-06-04 20:26:232 days ago1749068783IN
0xCD2F4D09...3f9953A36
0.002 ETH0.000880696.03362775
Withdraw Usdc226314542025-06-04 13:04:592 days ago1749042299IN
0xCD2F4D09...3f9953A36
0 ETH0.001309886.29565246
Deposit Usdc226314482025-06-04 13:03:472 days ago1749042227IN
0xCD2F4D09...3f9953A36
0 ETH0.001008916.09180722
Approve Usdc226314412025-06-04 13:02:232 days ago1749042143IN
0xCD2F4D09...3f9953A36
0 ETH0.000359095.90341637
Withdraw Weth226314262025-06-04 12:59:232 days ago1749041963IN
0xCD2F4D09...3f9953A36
0 ETH0.000862714.54258735
Withdraw Usdc226313832025-06-04 12:50:352 days ago1749041435IN
0xCD2F4D09...3f9953A36
0 ETH0.000967884.65192048
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Latest 25 internal transactions (View All)

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Parent Transaction Hash Method Block
From
To
Transfer226413172025-06-05 22:13:4725 hrs ago1749161627
0xCD2F4D09...3f9953A36
0.001 ETH
Transfer226413172025-06-05 22:13:4725 hrs ago1749161627
0xCD2F4D09...3f9953A36
0.001 ETH
Transfer226413102025-06-05 22:12:2325 hrs ago1749161543
0xCD2F4D09...3f9953A36
0.001 ETH
Transfer226413102025-06-05 22:12:2325 hrs ago1749161543
0xCD2F4D09...3f9953A36
0.001 ETH
Transfer226412722025-06-05 22:04:4725 hrs ago1749161087
0xCD2F4D09...3f9953A36
0 ETH
Transfer226412722025-06-05 22:04:4725 hrs ago1749161087
0xCD2F4D09...3f9953A36
0 ETH
Transfer226412292025-06-05 21:56:1125 hrs ago1749160571
0xCD2F4D09...3f9953A36
0.002 ETH
Transfer226412292025-06-05 21:56:1125 hrs ago1749160571
0xCD2F4D09...3f9953A36
0.002 ETH
Deposit226412122025-06-05 21:52:4725 hrs ago1749160367
0xCD2F4D09...3f9953A36
0.002 ETH
Transfer226336592025-06-04 20:29:112 days ago1749068951
0xCD2F4D09...3f9953A36
0.003 ETH
Transfer226336592025-06-04 20:29:112 days ago1749068951
0xCD2F4D09...3f9953A36
0.003 ETH
Deposit226336452025-06-04 20:26:232 days ago1749068783
0xCD2F4D09...3f9953A36
0.002 ETH
Transfer226314262025-06-04 12:59:232 days ago1749041963
0xCD2F4D09...3f9953A36
0.001 ETH
Transfer226314262025-06-04 12:59:232 days ago1749041963
0xCD2F4D09...3f9953A36
0.001 ETH
Transfer226312212025-06-04 12:17:352 days ago1749039455
0xCD2F4D09...3f9953A36
0.01 ETH
Transfer226312212025-06-04 12:17:352 days ago1749039455
0xCD2F4D09...3f9953A36
0.01 ETH
Deposit226297712025-06-04 7:24:472 days ago1749021887
0xCD2F4D09...3f9953A36
0.001 ETH
Deposit226295182025-06-04 6:33:112 days ago1749018791
0xCD2F4D09...3f9953A36
0.01 ETH
Deposit226291302025-06-04 5:15:232 days ago1749014123
0xCD2F4D09...3f9953A36
0.01 ETH
Deposit226289142025-06-04 4:31:472 days ago1749011507
0xCD2F4D09...3f9953A36
0.001 ETH
Transfer226249302025-06-03 15:10:233 days ago1748963423
0xCD2F4D09...3f9953A36
0.001 ETH
Transfer226249302025-06-03 15:10:233 days ago1748963423
0xCD2F4D09...3f9953A36
0.001 ETH
Deposit226249112025-06-03 15:06:353 days ago1748963195
0xCD2F4D09...3f9953A36
0.001 ETH
Transfer226163932025-06-02 10:27:354 days ago1748860055
0xCD2F4D09...3f9953A36
0.001 ETH
Transfer226163932025-06-02 10:27:354 days ago1748860055
0xCD2F4D09...3f9953A36
0.001 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
PositionUSDCETH

Compiler Version
v0.8.26+commit.8a97fa7a

Optimization Enabled:
Yes with 200 runs

Other Settings:
shanghai EvmVersion
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.9;
import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import "./lib/UniswapUtil.sol";

interface IWETH {
    function deposit() external payable;
    function withdraw(uint256) external;
}

interface IUniswapV3PositionManager {
    function increaseLiquidity(
        IncreaseLiquidityParams calldata params
    )
        external
        payable
        returns (uint128 liquidity, uint256 amount0, uint256 amount1);

    struct IncreaseLiquidityParams {
        uint256 tokenId;
        uint256 amount0Desired;
        uint256 amount1Desired;
        uint256 amount0Min;
        uint256 amount1Min;
        uint256 deadline;
    }

    struct DecreaseLiquidityParams {
        uint256 tokenId;
        uint128 liquidity;
        uint256 amount0Min;
        uint256 amount1Min;
        uint256 deadline;
    }

    struct CollectParams {
        uint256 tokenId;
        address recipient;
        uint128 amount0Max;
        uint128 amount1Max;
    }

    function decreaseLiquidity(
        DecreaseLiquidityParams calldata params
    ) external payable returns (uint256 amount0, uint256 amount1);

    function collect(
        CollectParams calldata params
    ) external payable returns (uint256 amount0, uint256 amount1);

    function positions(
        uint256 tokenId
    )
        external
        view
        returns (
            uint96 nonce,
            address operator,
            address token0,
            address token1,
            uint24 fee,
            int24 tickLower,
            int24 tickUpper,
            uint128 liquidity,
            uint256 feeGrowthInside0LastX128,
            uint256 feeGrowthInside1LastX128,
            uint128 tokensOwed0,
            uint128 tokensOwed1
        );

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    function ownerOf(uint256 tokenId) external view returns (address);
}

//USDC资金池:  https://app.uniswap.org/positions/v3/ethereum/998458
//ETH资金池:  https://app.uniswap.org/positions/v3/ethereum/998463

//存USDC前需要先授权给合约:
//https://etherscan.io/address/0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48#writeProxyContract

//操作员:
//https://etherscan.io/address/0x7fbE4E83f219E9EF26B222E74850bD3A081814E1#writeContract

contract PositionUSDCETH is AccessControl, IERC721Receiver {
    using SafeERC20 for IERC20;

    IUniswapV3PositionManager public constant PositionManager =
        IUniswapV3PositionManager(0xC36442b4a4522E871399CD717aBDD847Ab11FE88);
    address public constant WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address public constant USDC = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;

    uint256 public wethTokenId;
    uint256 public usdcTokenId;

    constructor() {
        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
        IERC20(WETH).approve(address(PositionManager), type(uint256).max);
        IERC20(USDC).approve(address(PositionManager), type(uint256).max);
    }

    function setTokenId(
        uint256 _wethTokenId,
        uint256 _usdcTokenId
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        wethTokenId = _wethTokenId;
        usdcTokenId = _usdcTokenId;
    }

    function depositETH() external payable {
        require(wethTokenId != 0, "TokenId not set");

        // 将ETH转换为WETH
        IWETH(WETH).deposit{value: msg.value}();

        increaseLiquidity(msg.value, wethTokenId);
    }

    function depositUsdc(uint256 usdcAmount) external {
        require(usdcTokenId != 0, "TokenId not set");
        IERC20(USDC).transferFrom(msg.sender, address(this), usdcAmount);
        increaseLiquidity(usdcAmount, usdcTokenId);
    }

    function increaseLiquidity(uint256 amount, uint256 tokenId) internal {
        if (tokenId == usdcTokenId) {
            PositionManager.increaseLiquidity(
                IUniswapV3PositionManager.IncreaseLiquidityParams({
                    tokenId: tokenId,
                    amount0Desired: amount,
                    amount1Desired: 0,
                    amount0Min: (amount * 99) / 100,
                    amount1Min: 0,
                    deadline: block.timestamp
                })
            );
        } else {
            PositionManager.increaseLiquidity(
                IUniswapV3PositionManager.IncreaseLiquidityParams({
                    tokenId: tokenId,
                    amount0Desired: 0,
                    amount1Desired: amount,
                    amount0Min: 0,
                    amount1Min: (amount * 99) / 100,
                    deadline: block.timestamp
                })
            );
        }
    }

    /**
     * @dev 估算指定金额对应的流动性数量
     * @param tokenId NFT的ID
     * @param amount 要移除的代币数量
     * @return liquidity 估算的流动性数量
     */
    function estimateLiquidityAmount(
        uint256 tokenId,
        uint256 amount
    ) public view returns (uint128 liquidity) {
        (, , , , , int24 tickLower, int24 tickUpper, , , , , ) = PositionManager
            .positions(tokenId);
        uint160 sqrtRatioAX96 = UniswapUtil.getSqrtRatioAtTick(tickLower);
        uint160 sqrtRatioBX96 = UniswapUtil.getSqrtRatioAtTick(tickUpper);

        if (tokenId == usdcTokenId) {
            // 对于USDC池子,使用amount0
            liquidity = UniswapUtil.getLiquidityForAmount0(
                sqrtRatioAX96,
                sqrtRatioBX96,
                (amount * 1000001) / 1000000
            );
        } else {
            // 对于WETH池子,使用amount1
            liquidity = UniswapUtil.getLiquidityForAmount1(
                sqrtRatioAX96,
                sqrtRatioBX96,
                (amount * 1000001) / 1000000
            );
        }
    }

    function withdrawWeth(
        uint256 amount,
        address recipient
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        decreaseLiquidityAndCollect(wethTokenId, amount, recipient);
    }

    function withdrawUsdc(
        uint256 amount,
        address recipient
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        decreaseLiquidityAndCollect(usdcTokenId, amount, recipient);
    }

    /**
     * @dev 移除流动性并收集代币到指定地址
     * @param tokenId NFT的ID
     * @param amount 要移除的代币数量
     * @param recipient 接收代币的地址
     */
    function decreaseLiquidityAndCollect(
        uint256 tokenId,
        uint256 amount,
        address recipient
    ) private {
        require(
            tokenId == wethTokenId || tokenId == usdcTokenId,
            "Invalid tokenId"
        );
        require(recipient != address(0), "Invalid recipient");

        // 估算需要移除的流动性数量
        uint128 liquidityToRemove = estimateLiquidityAmount(tokenId, amount);
        require(liquidityToRemove > 0, "Liquidity too small");

        _decreaseLiquidityAndCollect(tokenId, liquidityToRemove, recipient);
    }

    /**
     * @dev 内部函数:移除指定数量的流动性并收集代币到指定地址
     * @param tokenId NFT的ID
     * @param liquidityToRemove 要移除的流动性数量
     * @param recipient 接收代币的地址
     * @return amount0 收集的token0数量
     * @return amount1 收集的token1数量
     */
    function _decreaseLiquidityAndCollect(
        uint256 tokenId,
        uint128 liquidityToRemove,
        address recipient
    ) internal returns (uint256 amount0, uint256 amount1) {
        // 减少流动性
        (uint256 collected0, uint256 collected1) = PositionManager
            .decreaseLiquidity(
                IUniswapV3PositionManager.DecreaseLiquidityParams({
                    tokenId: tokenId,
                    liquidity: liquidityToRemove,
                    amount0Min: 0, // 可以设置滑点保护
                    amount1Min: 0, // 可以设置滑点保护
                    deadline: block.timestamp
                })
            );

        // 收集代币并发送到指定地址
        (amount0, amount1) = PositionManager.collect(
            IUniswapV3PositionManager.CollectParams({
                tokenId: tokenId,
                recipient: address(this), // 先收集到合约
                amount0Max: uint128(collected0),
                amount1Max: uint128(collected1)
            })
        );

        // 将代币转给接收者
        if (amount0 > 0) {
            IERC20(USDC).safeTransfer(recipient, amount0);
        }

        if (amount1 > 0) {
            // 如果是ETH池子,需要将WETH转换为ETH
            if (tokenId == wethTokenId) {
                IWETH(WETH).withdraw(amount1);
                (bool success, ) = recipient.call{value: amount1}("");
                require(success, "ETH transfer failed");
            } else {
                IERC20(WETH).safeTransfer(recipient, amount1);
            }
        }
    }

    /**
     * @dev 收集已累积的手续费而不减少流动性
     * @param tokenId NFT的ID
     * @param recipient 接收手续费的地址
     * @return amount0 收集的token0数量
     * @return amount1 收集的token1数量
     */
    function collectFees(
        uint256 tokenId,
        address recipient
    ) private returns (uint256 amount0, uint256 amount1) {
        require(
            tokenId == wethTokenId || tokenId == usdcTokenId,
            "Invalid tokenId"
        );
        require(recipient != address(0), "Invalid recipient");

        // 收集所有累积的手续费
        (amount0, amount1) = PositionManager.collect(
            IUniswapV3PositionManager.CollectParams({
                tokenId: tokenId,
                recipient: address(this), // 先收集到合约
                amount0Max: type(uint128).max,
                amount1Max: type(uint128).max
            })
        );

        // 将代币转给接收者
        if (amount0 > 0) {
            IERC20(USDC).safeTransfer(recipient, amount0);
        }

        if (amount1 > 0) {
            // 如果是ETH池子,需要将WETH转换为ETH
            if (tokenId == wethTokenId) {
                IWETH(WETH).withdraw(amount1);
                (bool success, ) = recipient.call{value: amount1}("");
                require(success, "ETH transfer failed");
            } else {
                IERC20(WETH).safeTransfer(recipient, amount1);
            }
        }
    }

    /**
     * @dev 将NFT从合约转移到指定地址
     * @param tokenId NFT的ID
     * @param recipient 接收NFT的地址
     */
    function transferNFT(
        uint256 tokenId,
        address recipient
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        require(
            tokenId == wethTokenId || tokenId == usdcTokenId,
            "Invalid tokenId"
        );
        require(recipient != address(0), "Invalid recipient");

        // 如果是WETH的NFT,更新状态变量
        if (tokenId == wethTokenId) {
            wethTokenId = 0;
        }

        // 如果是USDC的NFT,更新状态变量
        if (tokenId == usdcTokenId) {
            usdcTokenId = 0;
        }

        // 转移NFT
        // 使用safeTransferFrom确保接收者能够处理ERC721代币
        PositionManager.safeTransferFrom(address(this), recipient, tokenId);
    }

    function approveWeth(uint256 amount) external onlyRole(DEFAULT_ADMIN_ROLE) {
        IERC20(WETH).approve(address(PositionManager), amount);
    }

    function approveUsdc(uint256 amount) external onlyRole(DEFAULT_ADMIN_ROLE) {
        IERC20(USDC).approve(address(PositionManager), amount);
    }

    /**
     * @dev 实现IERC721Receiver接口,允许合约接收ERC721代币(NFT)
     */
    function onERC721Received(
        address, // operator
        address, // from
        uint256, // tokenId
        bytes calldata // data
    ) external pure override returns (bytes4) {
        // 不进行状态修改,只返回选择器
        return this.onERC721Received.selector;
    }

    /**
     * @dev 设置从外部接收的NFT
     * @param _tokenId NFT的ID
     * @param isWeth 是否为WETH的NFT
     */
    function setReceivedNFT(
        uint256 _tokenId,
        bool isWeth
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        // 验证NFT确实由合约持有
        require(
            PositionManager.ownerOf(_tokenId) == address(this),
            "Contract does not own this NFT"
        );

        if (isWeth) {
            wethTokenId = _tokenId;
        } else {
            usdcTokenId = _tokenId;
        }
    }

    receive() external payable {}
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.18;

library UniswapUtil {
    error T();
    int24 internal constant MIN_TICK = -887272;
    int24 internal constant MAX_TICK = -MIN_TICK;

    uint8 internal constant RESOLUTION = 96;
    uint256 internal constant Q96 = 0x1000000000000000000000000;

    function getSqrtRatioAtTick(int24 tick) internal pure returns (uint160 sqrtPriceX96) {
        unchecked {
            uint256 absTick = tick < 0 ? uint256(-int256(tick)) : uint256(int256(tick));
            if (absTick > uint256(int256(MAX_TICK))) revert T();

            uint256 ratio = absTick & 0x1 != 0 ? 0xfffcb933bd6fad37aa2d162d1a594001 : 0x100000000000000000000000000000000;
            if (absTick & 0x2 != 0) ratio = (ratio * 0xfff97272373d413259a46990580e213a) >> 128;
            if (absTick & 0x4 != 0) ratio = (ratio * 0xfff2e50f5f656932ef12357cf3c7fdcc) >> 128;
            if (absTick & 0x8 != 0) ratio = (ratio * 0xffe5caca7e10e4e61c3624eaa0941cd0) >> 128;
            if (absTick & 0x10 != 0) ratio = (ratio * 0xffcb9843d60f6159c9db58835c926644) >> 128;
            if (absTick & 0x20 != 0) ratio = (ratio * 0xff973b41fa98c081472e6896dfb254c0) >> 128;
            if (absTick & 0x40 != 0) ratio = (ratio * 0xff2ea16466c96a3843ec78b326b52861) >> 128;
            if (absTick & 0x80 != 0) ratio = (ratio * 0xfe5dee046a99a2a811c461f1969c3053) >> 128;
            if (absTick & 0x100 != 0) ratio = (ratio * 0xfcbe86c7900a88aedcffc83b479aa3a4) >> 128;
            if (absTick & 0x200 != 0) ratio = (ratio * 0xf987a7253ac413176f2b074cf7815e54) >> 128;
            if (absTick & 0x400 != 0) ratio = (ratio * 0xf3392b0822b70005940c7a398e4b70f3) >> 128;
            if (absTick & 0x800 != 0) ratio = (ratio * 0xe7159475a2c29b7443b29c7fa6e889d9) >> 128;
            if (absTick & 0x1000 != 0) ratio = (ratio * 0xd097f3bdfd2022b8845ad8f792aa5825) >> 128;
            if (absTick & 0x2000 != 0) ratio = (ratio * 0xa9f746462d870fdf8a65dc1f90e061e5) >> 128;
            if (absTick & 0x4000 != 0) ratio = (ratio * 0x70d869a156d2a1b890bb3df62baf32f7) >> 128;
            if (absTick & 0x8000 != 0) ratio = (ratio * 0x31be135f97d08fd981231505542fcfa6) >> 128;
            if (absTick & 0x10000 != 0) ratio = (ratio * 0x9aa508b5b7a84e1c677de54f3e99bc9) >> 128;
            if (absTick & 0x20000 != 0) ratio = (ratio * 0x5d6af8dedb81196699c329225ee604) >> 128;
            if (absTick & 0x40000 != 0) ratio = (ratio * 0x2216e584f5fa1ea926041bedfe98) >> 128;
            if (absTick & 0x80000 != 0) ratio = (ratio * 0x48a170391f7dc42444e8fa2) >> 128;

            if (tick > 0) ratio = type(uint256).max / ratio;
            sqrtPriceX96 = uint160((ratio >> 32) + (ratio % (1 << 32) == 0 ? 0 : 1));
        }
    }

    function mulDiv(uint256 a, uint256 b, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            uint256 prod0;
            uint256 prod1;
            assembly {
                let mm := mulmod(a, b, not(0))
                prod0 := mul(a, b)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            if (prod1 == 0) {
                require(denominator > 0);
                assembly {
                    result := div(prod0, denominator)
                }
                return result;
            }

            require(denominator > prod1);

            uint256 remainder;
            assembly {
                remainder := mulmod(a, b, denominator)
            }

            assembly {
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            uint256 twos = (0 - denominator) & denominator;

            assembly {
                denominator := div(denominator, twos)
            }

            assembly {
                prod0 := div(prod0, twos)
            }

            assembly {
                twos := add(div(sub(0, twos), twos), 1)
            }
            prod0 |= prod1 * twos;

            uint256 inv = (3 * denominator) ^ 2;

            inv *= 2 - denominator * inv;
            inv *= 2 - denominator * inv;
            inv *= 2 - denominator * inv;
            inv *= 2 - denominator * inv;
            inv *= 2 - denominator * inv;
            inv *= 2 - denominator * inv;

            result = prod0 * inv;
            return result;
        }
    }

    function toUint128(uint256 x) private pure returns (uint128 y) {
        require((y = uint128(x)) == x);
    }

    function getLiquidityForAmount0(uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint256 amount0) internal pure returns (uint128 liquidity) {
        if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96);
        uint256 intermediate = mulDiv(sqrtRatioAX96, sqrtRatioBX96, Q96);
        unchecked {
            return toUint128(mulDiv(amount0, intermediate, sqrtRatioBX96 - sqrtRatioAX96));
        }
    }

    function getLiquidityForAmount1(uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint256 amount1) internal pure returns (uint128 liquidity) {
        if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96);
        unchecked {
            return toUint128(mulDiv(amount1, Q96, sqrtRatioBX96 - sqrtRatioAX96));
        }
    }

    function getLiquidityForAmounts(
        uint160 sqrtRatioX96,
        uint160 sqrtRatioAX96,
        uint160 sqrtRatioBX96,
        uint256 amount0,
        uint256 amount1
    ) internal pure returns (uint128 liquidity) {
        if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96);

        if (sqrtRatioX96 <= sqrtRatioAX96) {
            liquidity = getLiquidityForAmount0(sqrtRatioAX96, sqrtRatioBX96, amount0);
        } else if (sqrtRatioX96 < sqrtRatioBX96) {
            uint128 liquidity0 = getLiquidityForAmount0(sqrtRatioX96, sqrtRatioBX96, amount0);
            uint128 liquidity1 = getLiquidityForAmount1(sqrtRatioAX96, sqrtRatioX96, amount1);

            liquidity = liquidity0 < liquidity1 ? liquidity0 : liquidity1;
        } else {
            liquidity = getLiquidityForAmount1(sqrtRatioAX96, sqrtRatioBX96, amount1);
        }
    }

    function getAmount0ForLiquidity(uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity) internal pure returns (uint256 amount0) {
        unchecked {
            if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96);

            return mulDiv(uint256(liquidity) << RESOLUTION, sqrtRatioBX96 - sqrtRatioAX96, sqrtRatioBX96) / sqrtRatioAX96;
        }
    }

    function getAmount1ForLiquidity(uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity) internal pure returns (uint256 amount1) {
        if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96);

        unchecked {
            return mulDiv(liquidity, sqrtRatioBX96 - sqrtRatioAX96, Q96);
        }
    }

    function getAmountsForLiquidity(
        uint160 sqrtRatioX96,
        uint160 sqrtRatioAX96,
        uint160 sqrtRatioBX96,
        uint128 liquidity
    ) internal pure returns (uint256 amount0, uint256 amount1) {
        if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96);

        if (sqrtRatioX96 <= sqrtRatioAX96) {
            amount0 = getAmount0ForLiquidity(sqrtRatioAX96, sqrtRatioBX96, liquidity);
        } else if (sqrtRatioX96 < sqrtRatioBX96) {
            amount0 = getAmount0ForLiquidity(sqrtRatioX96, sqrtRatioBX96, liquidity);
            amount1 = getAmount1ForLiquidity(sqrtRatioAX96, sqrtRatioX96, liquidity);
        } else {
            amount1 = getAmount1ForLiquidity(sqrtRatioAX96, sqrtRatioBX96, liquidity);
        }
    }
}

File 3 of 13 : IERC721Receiver.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.20;

/**
 * @title ERC-721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC-721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be
     * reverted.
     *
     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 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 {
    /**
     * @dev An operation with an ERC-20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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).
     *
     * This is a variant of {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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).
     *
     * This is a variant of {_callOptionalReturn} that silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (access/AccessControl.sol)

pragma solidity ^0.8.20;

import {IAccessControl} from "./IAccessControl.sol";
import {Context} from "../utils/Context.sol";
import {ERC165} from "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address account => bool) hasRole;
        bytes32 adminRole;
    }

    mapping(bytes32 role => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with an {AccessControlUnauthorizedAccount} error including the required role.
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual returns (bool) {
        return _roles[role].hasRole[account];
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `_msgSender()`
     * is missing `role`. Overriding this function changes the behavior of the {onlyRole} modifier.
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `account`
     * is missing `role`.
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert AccessControlUnauthorizedAccount(account, role);
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address callerConfirmation) public virtual {
        if (callerConfirmation != _msgSender()) {
            revert AccessControlBadConfirmation();
        }

        _revokeRole(role, callerConfirmation);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Attempts to grant `role` to `account` and returns a boolean indicating if `role` was granted.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual returns (bool) {
        if (!hasRole(role, account)) {
            _roles[role].hasRole[account] = true;
            emit RoleGranted(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Attempts to revoke `role` from `account` and returns a boolean indicating if `role` was revoked.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual returns (bool) {
        if (hasRole(role, account)) {
            _roles[role].hasRole[account] = false;
            emit RoleRevoked(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/IERC1363.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/ERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC-165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (access/IAccessControl.sol)

pragma solidity ^0.8.20;

/**
 * @dev External interface of AccessControl declared to support ERC-165 detection.
 */
interface IAccessControl {
    /**
     * @dev The `account` is missing a role.
     */
    error AccessControlUnauthorizedAccount(address account, bytes32 neededRole);

    /**
     * @dev The caller of a function is not the expected one.
     *
     * NOTE: Don't confuse with {AccessControlUnauthorizedAccount}.
     */
    error AccessControlBadConfirmation();

    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted to signal this.
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call. This account bears the admin role (for the granted role).
     * Expected in cases where the role was granted using the internal {AccessControl-_grantRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     */
    function renounceRole(bytes32 role, address callerConfirmation) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[ERC].
 *
 * 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[ERC 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 12 of 13 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "../utils/introspection/IERC165.sol";

File 13 of 13 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../token/ERC20/IERC20.sol";

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

Contract Security Audit

Contract ABI

API
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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.