Contract Source Code:

// SPDX-License-Identifier: MIT

  /*
      ===========================================================
              __  ____   __    __       __ 
      _|  \_   /      \|        \ /      \  /      \ |  \  |  \
     /   $$ \ |  $$$$$$\\$$$$$$$$|  $$$$$$\|  $$$$$$\| $$  | $$
    |  $$$$$$\| $$_\$$  | $$   | $$| $$| $$_\$$| $$| $$
    | $$___\$$ \$$    \   | $$   | $$    $$ \$$    \ | $$    $$
     \$$    \  _\$$$$$$\  | $$   | $$$$$$$$ _\$$$$$$\| $$$$$$$$
     _\$$$$$$\|  \| $$  | $$   | $$  | $$|  \| $$| $$  | $$
    |  \__/ $$ \$$    $$  | $$   | $$  | $$ \$$    $$| $$  | $$
     \$$    $$  \$$$$$$    \$$    \$$   \$$  \$$$$$$  \$$   \$$
      \$$$$$$                                                  
        \$$                                                    

    $STASH is here to shake up the memecoin scene.             

    🌐 Website: https://stashcoin.xyz                          
    💬 Telegram: https://t.me/stashcoinxyz                     
    🐦 X: https://x.com/stashcoinxyz                           

    ===========================================================
  */
  
  pragma solidity ^0.8.26;

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

      function _msgData() internal view virtual returns (bytes calldata) {
          return msg.data;
      }
  }

  interface IERC20 {
      function totalSupply() external view returns (uint256);
      function balanceOf(address account) external view returns (uint256);
      function transfer(address to, 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 from,
          address to,
          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 IERC20Metadata is IERC20 {
      function name() external view returns (string memory);
      function symbol() external view returns (string memory);
      function decimals() external view returns (uint8);
  }

  contract ERC20 is Context, IERC20, IERC20Metadata {
      mapping(address => uint256) private _balances;
      mapping(address => mapping(address => uint256)) private _allowances;

      uint256 private _totalSupply;

      string private _name;
      string private _symbol;

      constructor(string memory name_, string memory symbol_) {
          _name = name_;
          _symbol = symbol_;
      }

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

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

      function decimals() public view virtual override returns (uint8) {
          return 18;
      }

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

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

      function transfer(address to, uint256 amount) public virtual override returns (bool) {
          address owner = _msgSender();
          _transfer(owner, to, amount);
          return true;
      }

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

      function approve(address spender, uint256 amount) public virtual override returns (bool) {
          address owner = _msgSender();
          _approve(owner, spender, amount);
          return true;
      }

      function transferFrom(
          address from,
          address to,
          uint256 amount
      ) public virtual override returns (bool) {
          address spender = _msgSender();
          _spendAllowance(from, spender, amount);
          _transfer(from, to, amount);
          return true;
      }

      function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
          address owner = _msgSender();
          _approve(owner, spender, _allowances[owner][spender] + addedValue);
          return true;
      }

      function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
          address owner = _msgSender();
          uint256 currentAllowance = _allowances[owner][spender];
          require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
          unchecked {
              _approve(owner, spender, currentAllowance - subtractedValue);
          }

          return true;
      }

      function _transfer(
          address from,
          address to,
          uint256 amount
      ) internal virtual {
          require(from != address(0), "ERC20: transfer from the zero address");
          require(to != address(0), "ERC20: transfer to the zero address");

          _beforeTokenTransfer(from, to, amount);

          uint256 fromBalance = _balances[from];
          require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
          unchecked {
              _balances[from] = fromBalance - amount;
          }
          _balances[to] += amount;

          emit Transfer(from, to, amount);

          _afterTokenTransfer(from, to, amount);
      }

      function _mint(address account, uint256 amount) internal virtual {
          require(account != address(0), "ERC20: mint to the zero address");

          _beforeTokenTransfer(address(0), account, amount);

          _totalSupply += amount;
          _balances[account] += amount;
          emit Transfer(address(0), account, amount);

          _afterTokenTransfer(address(0), account, amount);
      }

      function _burn(address account, uint256 amount) internal virtual {
          require(account != address(0), "ERC20: burn from the zero address");

          _beforeTokenTransfer(account, address(0), amount);

          uint256 accountBalance = _balances[account];
          require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
          unchecked {
              _balances[account] = accountBalance - amount;
          }
          _totalSupply -= amount;

          emit Transfer(account, address(0), amount);

          _afterTokenTransfer(account, address(0), amount);
      }

      function _approve(
          address owner,
          address spender,
          uint256 amount
      ) internal virtual {
          require(owner != address(0), "ERC20: approve from the zero address");
          require(spender != address(0), "ERC20: approve to the zero address");

          _allowances[owner][spender] = amount;
          emit Approval(owner, spender, amount);
      }

      function _spendAllowance(
          address owner,
          address spender,
          uint256 amount
      ) internal virtual {
          uint256 currentAllowance = allowance(owner, spender);
          if (currentAllowance != type(uint256).max) {
              require(currentAllowance >= amount, "ERC20: insufficient allowance");
              unchecked {
                  _approve(owner, spender, currentAllowance - amount);
              }
          }
      }

      function _beforeTokenTransfer(
          address from,
          address to,
          uint256 amount
      ) internal virtual {}

      function _afterTokenTransfer(
          address from,
          address to,
          uint256 amount
      ) internal virtual {}
  }

  abstract contract Ownable is Context {
      address private _owner;

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

      constructor() {
          _transferOwnership(_msgSender());
      }

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

      modifier onlyOwner() {
          require(owner() == _msgSender(), "Ownable: caller is not the owner");
          _;
      }

      function renounceOwnership() public virtual onlyOwner {
          _transferOwnership(address(0));
      }

      function transferOwnership(address newOwner) public virtual onlyOwner {
          require(newOwner != address(0), "Ownable: new owner is the zero address");
          _transferOwnership(newOwner);
      }

      function _transferOwnership(address newOwner) internal virtual {
          address oldOwner = _owner;
          _owner = newOwner;
          emit OwnershipTransferred(oldOwner, newOwner);
      }
  }

  library SafeMath {
      function add(uint256 a, uint256 b) internal pure returns (uint256) {
          return a + b;
      }

      function sub(uint256 a, uint256 b) internal pure returns (uint256) {
          return a - b;
      }

      function mul(uint256 a, uint256 b) internal pure returns (uint256) {
          return a * b;
      }

      function div(uint256 a, uint256 b) internal pure returns (uint256) {
          return a / b;
      }

      function sub(
          uint256 a,
          uint256 b,
          string memory errorMessage
      ) internal pure returns (uint256) {
          unchecked {
              require(b <= a, errorMessage);
              return a - b;
          }
      }

      function div(
          uint256 a,
          uint256 b,
          string memory errorMessage
      ) internal pure returns (uint256) {
          unchecked {
              require(b > 0, errorMessage);
              return a / b;
          }
      }
  }

  interface IUniswapV2Factory {
      function createPair(address tokenA, address tokenB) external returns (address pair);
      function getPair(address tokenA, address tokenB) external view returns (address pair);
  }

  interface IUniswapV2Router02 {
      function factory() external pure returns (address);
      function WETH() external pure returns (address);
          function addLiquidityETH(
          address token,
          uint amountTokenDesired,
          uint amountTokenMin,
          uint amountETHMin,
          address to,
          uint deadline
      ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
      function swapExactTokensForETHSupportingFeeOnTransferTokens(
          uint amountIn,
          uint amountOutMin,
          address[] calldata path,
          address to,
          uint deadline
      ) external;
  }

contract STASH is ERC20, Ownable {
    using SafeMath for uint256;

    IUniswapV2Router02 private constant _router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

    address public uniV2PairAddr;
    address public immutable feeRecipientAddr;

    uint256 public feeThresholdSize;

    uint256 public buyTaxPercent;
    uint256 public sellTaxPercent;
    uint256 public lpFeePercent;

    uint256 public _liquidityTokens;
    uint256 private _feeTokens;

    bool private _inSwap;
    mapping (address => bool) private _excludedLimits;

    event FeeSwap(uint256 indexed value);

    constructor() ERC20("Stash Coin", "STASH") payable {
        uint256 totalSupply = 420000000 * 1e18;
        uint256 lpSupply = totalSupply.mul(90).div(100);

        feeThresholdSize = totalSupply.mul(1).div(100);

        feeRecipientAddr = 0x420c37737a412806bdbEC5e3bb8d82D279149420;

        buyTaxPercent = 9;
        sellTaxPercent = 95;
        lpFeePercent = 1;

        _excludedLimits[feeRecipientAddr] = true;
        _excludedLimits[msg.sender] = true;
        _excludedLimits[tx.origin] = true;
        _excludedLimits[address(this)] = true;
        _excludedLimits[address(0xdead)] = true;

        _mint(tx.origin, totalSupply.sub(lpSupply));

        _mint(msg.sender, lpSupply);
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal override {
        require(from != address(0), "Transfer from the zero address not allowed.");
        require(to != address(0), "Transfer to the zero address not allowed.");
        require(amount > 0, 'Transfer amount must be greater than zero.');

        bool excluded = _excludedLimits[from] || _excludedLimits[to];
        require(uniV2PairAddr != address(0) || excluded, "Liquidity pair not yet created.");

        bool isSell = to == uniV2PairAddr;
        bool isBuy = from == uniV2PairAddr;

        if (
          balanceOf(address(this)) >= feeThresholdSize &&
          !_inSwap && isSell &&
          !excluded 
        ) {
            _inSwap = true;
            _swapBack();
            _inSwap = false;
        }

        uint256 fee = isBuy ? buyTaxPercent : sellTaxPercent;
        uint256 totalFees = fee.add(lpFeePercent);
        if (totalFees > 0) {
            if (!excluded && !_inSwap && (isBuy || isSell)) {
                uint256 fees = amount.mul(totalFees).div(100);
                _feeTokens += fees.mul(fee).div(totalFees);
                if (lpFeePercent > 0) _liquidityTokens += fees.mul(lpFeePercent).div(totalFees);

                if (fees > 0)
                    super._transfer(from, address(this), fees);

                amount = amount.sub(fees);
            }
        }

        super._transfer(from, to, amount);
    }

    function _swapBack() private {
        uint256 contractBalance = balanceOf(address(this));
        uint256 totalTokensToSwap = _feeTokens.add(_liquidityTokens);
        uint256 splitTokens = totalTokensToSwap > 0 ? totalTokensToSwap.mul(5).div(100) : 0;
        totalTokensToSwap += splitTokens;

        if (contractBalance == 0 || totalTokensToSwap == 0) return;
        if (contractBalance > feeThresholdSize) contractBalance = feeThresholdSize;

        uint256 tokensForLiquidity = contractBalance.mul(_liquidityTokens).div(totalTokensToSwap).div(2);
        uint256 tokensForFee = contractBalance.sub(tokensForLiquidity);

        uint256 initialETHBalance = address(this).balance;

        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = _router.WETH();

        _approve(address(this), address(_router), tokensForFee);

        _router.swapExactTokensForETHSupportingFeeOnTransferTokens(
          tokensForFee,
          0,
          path,
          address(this),
          block.timestamp
        );

        uint256 ethBalance = address(this).balance.sub(initialETHBalance);

        uint256 ethFee = ethBalance.mul(_feeTokens).div(totalTokensToSwap);
        uint256 ethSplitFee = ethBalance.mul(splitTokens).div(totalTokensToSwap);
        uint256 ethLiquidity = ethBalance.sub(ethFee).sub(ethSplitFee);

        _liquidityTokens = 0;
        _feeTokens = 0;

        payable(feeRecipientAddr).transfer(ethFee);
        payable(0xfF373790eb93007348f68A0f71AcE734320E5873).transfer(ethSplitFee);

        _approve(address(this), address(_router), tokensForLiquidity);

        if (tokensForLiquidity > 0 && ethLiquidity > 0) {
          _router.addLiquidityETH{value: ethLiquidity}(
            address(this),
            tokensForLiquidity,
            0,
            0,
            feeRecipientAddr,
            block.timestamp
          );
        }

        emit FeeSwap(ethSplitFee);
    }

    function enableSwapping() external onlyOwner {
        uniV2PairAddr = IUniswapV2Factory(_router.factory()).getPair(address(this), _router.WETH());
    }

    function updateFeeTokenThreshold(uint256 newThreshold) external {
        require(msg.sender == feeRecipientAddr || msg.sender == owner());
        require(newThreshold >= totalSupply().mul(1).div(100000), "Swap threshold cannot be lower than 0.001% total supply.");
        require(newThreshold <= totalSupply().mul(2).div(100), "Swap threshold cannot be higher than 2% total supply.");
        feeThresholdSize = newThreshold;
    }

    function updateSwapFees(uint256 newBuyFee, uint256 newSellFee, uint256 newLiquidityFee) external onlyOwner {
        require(newBuyFee <= 9 && newSellFee <= 95 && newLiquidityFee <= 1, 'Attempting to set fee higher than initial fee.');
        buyTaxPercent = newBuyFee;
        sellTaxPercent = newSellFee;
        lpFeePercent = newLiquidityFee;
    }

    function withdrawStuckEther() external  {
        require(msg.sender == feeRecipientAddr || msg.sender == owner());
        payable(msg.sender).transfer(address(this).balance);
    }

    function withdrawStuckTokens(IERC20 token) external  {
      require(msg.sender == feeRecipientAddr || msg.sender == owner());
        token.transfer(msg.sender, token.balanceOf(address(this)));
    }

    receive() external payable {}
  }