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Contract Diff Checker

Contract Name:
ERC20

Contract Source Code:

File 1 of 1 : ERC20

/*
   
SPDX-License-Identifier: Unlicensed

https://t.me/MagnifyPNL
https://x.com/MagnifyPNL
https://Magnify.Money

   
   */
   
   pragma solidity 0.8.23;
   
   abstract contract Context {
       function _msgSender() internal view virtual returns (address) {
           return msg.sender;
       }
   }
   
   interface IERC20 {
       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
       );
   }
   
   contract Ownable is Context {
       address private _owner;
       address private _previousOwner;
       event OwnershipTransferred(
           address indexed previousOwner,
           address indexed newOwner
       );
   
       constructor() {
           address msgSender = _msgSender();
           _owner = msgSender;
           emit OwnershipTransferred(address(0), msgSender);
       }
   
       function owner() public view returns (address) {
           return _owner;
       }
   
       modifier onlyOwner() {
           require(_owner == _msgSender(), "Ownable: caller is not the owner");
           _;
       }
       
       function renounceOwnership() public virtual onlyOwner {
           emit OwnershipTransferred(_owner, address(0));
           _owner = address(0);
       }
   }
   
   interface IUniswapV2Factory {
       function createPair(
           address tokenA,
           address tokenB
       ) external returns (address pair);
   }
   
   interface IUniswapV2Router02 {
       function swapExactTokensForETHSupportingFeeOnTransferTokens(
           uint amountIn,
           uint amountOutMin,
           address[] calldata path,
           address to,
           uint deadline
       ) external;
   
       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);
   }
   
   contract ERC20 is Context, IERC20, Ownable {
       uint256 private constant _totalSupply = 1_000_000e18;
       uint256 private twoPercent = 20_000e18;
       uint256 private constant minSwap = 1_0000e18;
       uint8 private constant _decimals = 18;
   
       IUniswapV2Router02 immutable uniswapV2Router;
       address immutable uniswapV2Pair;
       address immutable WETH;
       address payable immutable marketingWallet;
   
       uint256 public buyTax;
       uint256 public sellTax;
   
       uint8 private launch;
       uint8 private inSwapAndLiquify;
   
       uint256 private launchBlock;
       uint256 public maxTxAmount = 20_000e18; //max Tx
   
       string public constant _name = "Magnify";
       string public constant _symbol = "MAG";
   
       mapping(address => uint256) private _balance;
       mapping(address => mapping(address => uint256)) private _allowances;
       mapping(address => bool) private _isExcludedFromFeeWallet;
   
       constructor() {
           
           uniswapV2Router = IUniswapV2Router02(
               0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
           );
           WETH = uniswapV2Router.WETH();
           buyTax = 20;
           sellTax = 20;
   
           uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
               address(this),
               WETH
           );
   
           marketingWallet = payable(msg.sender);
           _balance[address(this)] = _totalSupply;
           _isExcludedFromFeeWallet[marketingWallet] = true;
           _isExcludedFromFeeWallet[msg.sender] = true;
           _isExcludedFromFeeWallet[address(this)] = true;
           _allowances[address(this)][address(uniswapV2Router)] = type(uint256)
               .max;
           _allowances[msg.sender][address(uniswapV2Router)] = type(uint256).max;
           _allowances[marketingWallet][address(uniswapV2Router)] = type(uint256)
               .max;
   
           emit Transfer(address(0), _msgSender(), _totalSupply);
       }
   
       function name() public pure returns (string memory) {
           return _name;
       }
   
       function symbol() public pure returns (string memory) {
           return _symbol;
       }
   
       function decimals() public pure returns (uint8) {
           return _decimals;
       }
   
       function totalSupply() public pure override returns (uint256) {
           return _totalSupply;
       }
   
       function balanceOf(address account) public view override returns (uint256) {
           return _balance[account];
       }
   
       function transfer(
           address recipient,
           uint256 amount
       ) public override returns (bool) {
           _transfer(_msgSender(), 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(_msgSender(), spender, amount);
           return true;
       }
   
       function transferFrom(
           address sender,
           address recipient,
           uint256 amount
       ) public override returns (bool) {
           _transfer(sender, recipient, amount);
           _approve(
               sender,
               _msgSender(),
               _allowances[sender][_msgSender()] - amount
           );
           return true;
       }
   
       function _approve(address owner, address spender, uint256 amount) private {
           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 addLp() external payable onlyOwner {
           _approve(address(this), address(uniswapV2Router), type(uint).max);
           uniswapV2Router.addLiquidityETH{value: msg.value}(
               address(this),
               balanceOf(address(this)),
               0,
               0,
               owner(),
               block.timestamp
           );
           IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
       }
   
       function openTrading() external onlyOwner {
           launch = 1;
           launchBlock = block.number;
       }
   
       function removeLimits(uint256 finalTaxRate) external onlyOwner {
           require(finalTaxRate <= 5, "Cannot set tax greater than 5%");
           maxTxAmount = _totalSupply;
           twoPercent = _totalSupply;
           buyTax = finalTaxRate;
           sellTax = finalTaxRate;
       }
   
     
   
       function _transfer(address from, address to, uint256 amount) private {
           require(from != address(0), "ERC20: transfer from the zero address");
           require(amount > 1e9, "Min transfer amt");
   
           uint256 _tax;
           if (_isExcludedFromFeeWallet[from] || _isExcludedFromFeeWallet[to]) {
               _tax = 0;
           } else {
               require(
                   launch != 0 && amount <= maxTxAmount,
                   "Launch / Max TxAmount 2% at launch"
               );
   
               if (inSwapAndLiquify == 1) {
                   //No tax transfer
                   _balance[from] -= amount;
                   _balance[to] += amount;
   
                   emit Transfer(from, to, amount);
                   return;
               }
   
               if (from == uniswapV2Pair) {
                   _tax = buyTax;
               } else if (to == uniswapV2Pair) {
                   uint256 tokensToSwap = _balance[address(this)];
                   if (tokensToSwap > minSwap && inSwapAndLiquify == 0) {
                       if (tokensToSwap > twoPercent) {
                           tokensToSwap = twoPercent;
                       }
                       inSwapAndLiquify = 1;
                       address[] memory path = new address[](2);
                       path[0] = address(this);
                       path[1] = WETH;
                       uniswapV2Router
                           .swapExactTokensForETHSupportingFeeOnTransferTokens(
                               tokensToSwap,
                               0,
                               path,
                               marketingWallet,
                               block.timestamp
                           );
                       inSwapAndLiquify = 0;
                   }
                   _tax = sellTax;
               } else {
                   _tax = 0;
               }
           }
   
           //Is there tax for sender|receiver?
           if (_tax != 0) {
               //Tax transfer
               uint256 taxTokens = (amount * _tax) / 100;
               uint256 transferAmount = amount - taxTokens;
   
               _balance[from] -= amount;
               _balance[to] += transferAmount;
               _balance[address(this)] += taxTokens;
               emit Transfer(from, address(this), taxTokens);
               emit Transfer(from, to, transferAmount);
           } else {
               //No tax transfer
               _balance[from] -= amount;
               _balance[to] += amount;
   
               emit Transfer(from, to, amount);
           }
       }
   
       receive() external payable {}
   }

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