Contract Source Code:
File 1 of 1 : AntiMEV
// SPDX-License-Identifier: MIT
/*
AntiMEV token detects and defends against MEV attack bots
Website: https://antimev.io
Twitter: https://twitter.com/Anti_MEV
Telegram: https://t.me/antimev
*/
pragma solidity ^0.8.17;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
}
contract Ownable is Context {
address private _owner;
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 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);
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external 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);
}
contract AntiMEV is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
mapping(address => uint256) private _lastTxBlock; // block number for user's last tx
mapping(address => bool) public isBOT; // MEV bots
mapping(address => bool) public isVIP; // VIP addresses
bool public _detectMEV = true; // enable MEV detection features
uint256 public _mineBlocks = 3; // blocks to mine before 2nd tx
uint256 public _gasDelta = 25; // increase in gas price to be considered bribe
uint256 public _avgGasPrice = 1 * 10**9; // initial rolling average gas price
uint256 private _maxSample = 10; // blocks used to calculate average gas price
uint256 private _txCounter = 0; // counter used for average gas price
string private constant _name = unicode"AntiMEV";
string private constant _symbol = unicode"AntiMEV";
uint256 public _maxWalletSize = _tTotal.mul(49).div(1000); // maxWallet is 4.9% supply
uint8 private constant _decimals = 18;
uint256 private constant _tTotal = 1123581321 * 10**_decimals; // supply is Fibonnaci
address private _devWallet = 0xc2657176e213DDF18646eFce08F36D656aBE3396;
address private _burnWallet = 0x8B30998a9492610F074784Aed7aFDd682B23B416;
address private _airdropWallet = 0xe276d3ea57c5AF859e52d51C2C11f5deCb4C4838;
IUniswapV2Router02 private uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
constructor () {
_balances[_msgSender()] = _tTotal.mul(90).div(100); // 90%
_balances[_devWallet] = _tTotal.mul(25).div(1000); // 2.5%
_balances[_burnWallet] =_tTotal.mul(35).div(1000); // 3.5%
_balances[_airdropWallet] = _tTotal.mul(40).div(1000); // 4%
isVIP[owner()] = true;
isVIP[address(this)] = true;
}
function _checkMEV(
address from,
address to
) private {
// test for known bot
require(!isBOT[from] && !isBOT[to], "AntiMEV: Known MEV Bot");
// test for sandwich attack
require(_lastTxBlock[from] + _mineBlocks < block.number,
"AntiMEV: Detected sandwich attack, mine more blocks");
_lastTxBlock[from] = block.number;
// calculate rolling average gas price
_txCounter += 1;
_avgGasPrice =
(_avgGasPrice * (_txCounter - 1)) / _txCounter + tx.gasprice / _txCounter;
// test for gas bribe (front-run)
require(
tx.gasprice <= _avgGasPrice.add(_avgGasPrice.mul(_gasDelta).div(100)),
"AntiMEV: Detected gas bribe, possible front-run");
}
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");
if (from != owner() && to != owner()) {
require(tradingOpen,"Trading not open");
if (_detectMEV) {
if (to != address(uniswapV2Router) && to != address(uniswapV2Pair)) {
_checkMEV(from, to);
}
}
if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! isVIP[to] ) {
require(balanceOf(to) + amount <= _maxWalletSize, "Exceeds the maxWalletSize.");
}
}
_balances[from]=_balances[from].sub(amount);
_balances[to]=_balances[to].add(amount);
emit Transfer(from, to, amount);
}
function setMEV(
bool detectMEV,
uint256 mineBlocks,
uint256 gasDelta,
uint256 maxSample,
uint256 avgGasPrice
) external onlyOwner {
_detectMEV = detectMEV;
_mineBlocks = mineBlocks;
_gasDelta = gasDelta;
_maxSample = maxSample;
_avgGasPrice = avgGasPrice;
}
function setMaxWallet(uint256 maxWallet) external onlyOwner {
_maxWalletSize = maxWallet;
}
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 _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[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()].sub(amount, "ERC20: transfer amount exceeds allowance"));
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 setBOT(address _address, bool _isBot) external onlyOwner{
require(!isVIP[_address] && _address != uniswapV2Pair && _address != address(uniswapV2Router),
"AntiMEV: Cannot set VIP to BOT");
isBOT[_address] = _isBot;
}
function setVIP(address _address, bool _isVIP) external onlyOwner{
require(!isBOT[_address], "AntiMEV: Cannot set BOT to VIP");
isVIP[_address] = _isVIP;
}
function setWallets(
address dev,
address burn,
address airdrop
) external onlyOwner {
_devWallet = dev;
_burnWallet = burn;
_airdropWallet = airdrop;
}
function openTrading() external onlyOwner() {
require(!tradingOpen,"trading already open");
uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
tradingOpen = true;
}
receive() external payable {}
}