ETH Price: $3,443.63 (+4.65%)

Contract

0xED644E2094f3f6e9bad4296a6d70BbdE41870C09
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Rescue ETH201451982024-06-22 5:36:11154 days ago1719034571IN
0xED644E20...E41870C09
0 ETH0.000065422.1353694
Rescue Token201451962024-06-22 5:35:47154 days ago1719034547IN
0xED644E20...E41870C09
0 ETH0.000203922.2124955
Rescue Token193803612024-03-07 2:37:59261 days ago1709779079IN
0xED644E20...E41870C09
0 ETH0.0029684755.30142796
Buy Back WTAO Ad...193799472024-03-07 1:14:47261 days ago1709774087IN
0xED644E20...E41870C09
0 ETH0.0107708566.11093273
Buy Back WTAO Ad...193778102024-03-06 18:05:59261 days ago1709748359IN
0xED644E20...E41870C09
0 ETH0.0134500789.62713081
0x60806040193758722024-03-06 11:36:23262 days ago1709724983IN
 Create: BuyBackTAO
0 ETH0.0914697475.49263817

Latest 25 internal transactions (View All)

Advanced mode:
Parent Transaction Hash Block From To
201451982024-06-22 5:36:11154 days ago1719034571
0xED644E20...E41870C09
86.51377628 ETH
200996942024-06-15 20:51:11160 days ago1718484671
0xED644E20...E41870C09
0.0257959 ETH
199994782024-06-01 20:52:11174 days ago1717275131
0xED644E20...E41870C09
0.0275677 ETH
199403942024-05-24 14:39:35182 days ago1716561575
0xED644E20...E41870C09
0.03186839 ETH
198397632024-05-10 12:54:23197 days ago1715345663
0xED644E20...E41870C09
0.03713461 ETH
197977532024-05-04 15:52:23202 days ago1714837943
0xED644E20...E41870C09
0.03860359 ETH
197695832024-04-30 17:21:23206 days ago1714497683
0xED644E20...E41870C09
0.03976688 ETH
197300572024-04-25 4:40:35212 days ago1714020035
0xED644E20...E41870C09
0.04048833 ETH
196696542024-04-16 17:53:11220 days ago1713289991
0xED644E20...E41870C09
0.04508324 ETH
196650382024-04-16 2:21:35221 days ago1713234095
0xED644E20...E41870C09
0.04180507 ETH
196413052024-04-12 18:28:11224 days ago1712946491
0xED644E20...E41870C09
0.04051956 ETH
196371152024-04-12 4:22:59225 days ago1712895779
0xED644E20...E41870C09
0.04214859 ETH
196359832024-04-12 0:34:59225 days ago1712882099
0xED644E20...E41870C09
0.04786586 ETH
196316142024-04-11 9:53:35226 days ago1712829215
0xED644E20...E41870C09
0.05684212 ETH
196314962024-04-11 9:29:59226 days ago1712827799
0xED644E20...E41870C09
0.05915899 ETH
196313332024-04-11 8:57:11226 days ago1712825831
0xED644E20...E41870C09
0.06207423 ETH
196266902024-04-10 17:22:35226 days ago1712769755
0xED644E20...E41870C09
0.04154472 ETH
196208262024-04-09 21:40:59227 days ago1712698859
0xED644E20...E41870C09
0.04120838 ETH
196195562024-04-09 17:25:11227 days ago1712683511
0xED644E20...E41870C09
0.04168736 ETH
195878812024-04-05 6:52:59232 days ago1712299979
0xED644E20...E41870C09
0.03335754 ETH
195762732024-04-03 15:55:23233 days ago1712159723
0xED644E20...E41870C09
0.03493987 ETH
195536432024-03-31 11:40:59237 days ago1711885259
0xED644E20...E41870C09
0.03517095 ETH
195362332024-03-29 0:56:59239 days ago1711673819
0xED644E20...E41870C09
0.03625207 ETH
195315242024-03-28 8:49:11240 days ago1711615751
0xED644E20...E41870C09
0.04059677 ETH
195212682024-03-26 21:28:35241 days ago1711488515
0xED644E20...E41870C09
0.04265929 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
BuyBackTAO

Compiler Version
v0.8.23+commit.f704f362

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion
File 1 of 6 : BuyBackTAO.sol
// SPDX-License-Identifier: MIT
import "@uniswap/v3-periphery/contracts/interfaces/ISwapRouter.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

pragma solidity 0.8.23;

contract BuyBackTAO is Ownable {
    address public weth = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address public wtao = 0x77E06c9eCCf2E797fd462A92B6D7642EF85b0A44;

    ISwapRouter public swaprouter =
        ISwapRouter(0xE592427A0AEce92De3Edee1F18E0157C05861564);
    bool public openSwapPublic;
    uint256 public swapAmount;
    uint256 public latestBuyBack;
    uint256 public buyBackInterval;

    event BuyBackWTAO(uint256 amount);

    constructor() {
        swapAmount = 1 ether;
        openSwapPublic = true;
        buyBackInterval = 1 days;
    }

    modifier canSwap() {
        require(openSwapPublic, "Swap is not open");
        require(
            block.timestamp - latestBuyBack > buyBackInterval,
            "Buyback interval not reached"
        );
        _;
    }

    function buyBackWTAO() external canSwap {
        uint256 _wtao = ISwapRouter(swaprouter).exactInputSingle{
            value: swapAmount
        }(
            ISwapRouter.ExactInputSingleParams({
                tokenIn: weth,
                tokenOut: wtao,
                fee: 10000,
                recipient: address(this),
                deadline: block.timestamp,
                amountIn: swapAmount,
                amountOutMinimum: 0,
                sqrtPriceLimitX96: 0
            })
        );
        latestBuyBack = block.timestamp;
        emit BuyBackWTAO(_wtao);
    }

    function buyBackWTAOAdmin(uint256 _amount) external onlyOwner {
        uint256 _wtao = ISwapRouter(swaprouter).exactInputSingle{
            value: _amount
        }(
            ISwapRouter.ExactInputSingleParams({
                tokenIn: weth,
                tokenOut: wtao,
                fee: 10000,
                recipient: address(this),
                deadline: block.timestamp,
                amountIn: _amount,
                amountOutMinimum: 0,
                sqrtPriceLimitX96: 0
            })
        );
        emit BuyBackWTAO(_wtao);
    }

    function setOpenSwapPublic(bool _openSwapPublic) external onlyOwner {
        openSwapPublic = _openSwapPublic;
    }

    function setSwapAmount(uint256 _swapAmount) external onlyOwner {
        swapAmount = _swapAmount;
    }

    function setBuyBackInterval(uint256 _buyBackInterval) external onlyOwner {
        buyBackInterval = _buyBackInterval;
    }

    function rescueETH() external onlyOwner {
        (bool _sent, ) = payable(_msgSender()).call{
            value: address(this).balance
        }("");
        require(_sent);
    }

    function rescueToken(address _token, uint256 _amount) external onlyOwner {
        IERC20(_token).transfer(_msgSender(), _amount);
    }

    receive() external payable {}
}

File 2 of 6 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling 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 3 of 6 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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 4 of 6 : 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 5 of 6 : IUniswapV3SwapCallback.sol
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

/// @title Callback for IUniswapV3PoolActions#swap
/// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface
interface IUniswapV3SwapCallback {
    /// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap.
    /// @dev In the implementation you must pay the pool tokens owed for the swap.
    /// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory.
    /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped.
    /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token0 to the pool.
    /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token1 to the pool.
    /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call
    function uniswapV3SwapCallback(
        int256 amount0Delta,
        int256 amount1Delta,
        bytes calldata data
    ) external;
}

File 6 of 6 : ISwapRouter.sol
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.7.5;
pragma abicoder v2;

import '@uniswap/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol';

/// @title Router token swapping functionality
/// @notice Functions for swapping tokens via Uniswap V3
interface ISwapRouter is IUniswapV3SwapCallback {
    struct ExactInputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactInputSingleParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut);

    struct ExactInputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another along the specified path
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactInputParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut);

    struct ExactOutputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactOutputSingleParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutputSingle(ExactOutputSingleParams calldata params) external payable returns (uint256 amountIn);

    struct ExactOutputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another along the specified path (reversed)
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactOutputParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutput(ExactOutputParams calldata params) external payable returns (uint256 amountIn);
}

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

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"BuyBackWTAO","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"buyBackInterval","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"buyBackWTAO","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"buyBackWTAOAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"latestBuyBack","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"openSwapPublic","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":[],"name":"rescueETH","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"rescueToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_buyBackInterval","type":"uint256"}],"name":"setBuyBackInterval","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_openSwapPublic","type":"bool"}],"name":"setOpenSwapPublic","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_swapAmount","type":"uint256"}],"name":"setSwapAmount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"swapAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"swaprouter","outputs":[{"internalType":"contract ISwapRouter","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"weth","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"wtao","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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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.