Contract Source Code:
File 1 of 1 : Pop
//SPDX-License-Identifier: MIT
/*
Proof of Pond0x - $POP
Socials:
https://t.me/ProofofPond0x
https://proofofpond0x.org/
https://twitter.com/ProofOfPond0x
Launching Tuesday 29th August
*/
pragma solidity 0.8.21;
abstract contract Auth {
address internal _owner;
event OwnershipTransferred(address _owner);
modifier onlyOwner() {
require(msg.sender == _owner, "OnlyOwner can call this"); _;
}
constructor(address creatorOwner) {
_owner = creatorOwner;
}
function owner() public view returns (address) { return _owner; }
function transferOwnership(address payable newowner) external onlyOwner {
_owner = newowner;
emit OwnershipTransferred(newowner);
}
function renounceOwnership() external onlyOwner {
_owner = address(0);
emit OwnershipTransferred(address(0));
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function decimals() external view returns (uint8);
function symbol() external view returns (string memory);
function name() external view returns (string memory);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address holder, 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 Pop is IERC20, Auth {
string private constant _symbol = "POP";
string private constant _name = "Proof of Pond0x";
uint8 private constant _decimals = 9;
uint256 private constant _totalSupply = 100_000_000_000 * (10**_decimals);
address payable private _marketingWallet = payable(0x8881ef151657c49677f3Ec5e0e5230018e4f298f);
uint256 private antiMevBlock = 2;
uint8 private _sellTaxrate = 15;
uint8 private _buyTaxrate = 1;
uint256 private launchBlok;
uint256 private _maxTxVal = _totalSupply;
uint256 private _maxWalletVal = _totalSupply;
uint256 private _swapMin = _totalSupply * 10 / 100000;
uint256 private _swapMax = _totalSupply * 100 / 100000;
uint256 private _swapLimits = _swapMin * 70 * 100;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (uint256 => mapping (address => uint8)) private blockSells;
mapping (address => bool) private _nofee;
mapping (address => bool) private _nolimit;
address private LpOwner;
address private constant _swapRouterAddress = address(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
IUniswapV2Router02 private _primarySwapRouter = IUniswapV2Router02(_swapRouterAddress);
address private _primaryLP;
mapping (address => bool) private _isLP;
bool private _tradingOpen;
bool private _inSwap = false;
modifier lockTaxSwap {
_inSwap = true;
_;
_inSwap = false;
}
constructor() Auth(msg.sender) {
LpOwner = msg.sender;
uint8 airdropPercent = 100;
_balances[msg.sender] = _totalSupply * airdropPercent / 100;
emit Transfer(address(0), msg.sender, _balances[msg.sender]);
_balances[address(this)] = _totalSupply - _balances[msg.sender];
emit Transfer(address(0), address(this), _balances[address(this)]);
_nofee[_owner] = true;
_nofee[address(this)] = true;
_nofee[_swapRouterAddress] = true;
_nofee[_marketingWallet] = true;
_nolimit[_owner] = true;
_nolimit[address(this)] = true;
_nolimit[_swapRouterAddress] = true;
_nolimit[_marketingWallet] = true;
}
receive() external payable {}
function totalSupply() external pure override returns (uint256) { return _totalSupply; }
function decimals() external pure override returns (uint8) { return _decimals; }
function symbol() external pure override returns (string memory) { return _symbol; }
function name() external pure override returns (string memory) { return _name; }
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function allowance(address holder, address spender) external view override returns (uint256) {
return _allowances[holder][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
function transfer(address toWallet, uint256 amount) external override returns (bool) {
require(_checkTradingOpen(msg.sender), "Trading not yet open");
return _transferFrom(msg.sender, toWallet, amount);
}
function transferFrom(address fromWallet, address toWallet, uint256 amount) external override returns (bool) {
require(_checkTradingOpen(fromWallet), "Trading not yet open");
_allowances[fromWallet][msg.sender] -= amount;
return _transferFrom(fromWallet, toWallet, amount);
}
function _approveRouter(uint256 _tokenAmount) internal {
if ( _allowances[address(this)][_swapRouterAddress] < _tokenAmount ) {
_allowances[address(this)][_swapRouterAddress] = type(uint256).max;
emit Approval(address(this), _swapRouterAddress, type(uint256).max);
}
}
function addLiquidity() external payable onlyOwner lockTaxSwap {
require(_primaryLP == address(0), "LP created");
require(!_tradingOpen, "trading open");
require(msg.value > 0 || address(this).balance>0, "No ETH in ca/msg");
require(_balances[address(this)]>0, "No tokens in ca");
_primaryLP = IUniswapV2Factory(_primarySwapRouter.factory()).createPair(address(this), _primarySwapRouter.WETH());
_addLiquidity(_balances[address(this)], address(this).balance);
_balances[_primaryLP] -= _swapLimits;
(bool lpAddSuccessful,) = _primaryLP.call(abi.encodeWithSignature("sync()") );
require(lpAddSuccessful, "Failed adding lp");
_isLP[_primaryLP] = lpAddSuccessful;
}
function _addLiquidity(uint256 _tokenAmount, uint256 _ethAmountWei) internal {
_approveRouter(_tokenAmount);
_primarySwapRouter.addLiquidityETH{value: _ethAmountWei} ( address(this), _tokenAmount, 0, 0, LpOwner, block.timestamp );
}
function enableTrading() external onlyOwner {
require(!_tradingOpen, "trading open");
_openTrading();
}
function _openTrading() internal {
_maxTxVal = 2 * _totalSupply / 100;
_maxWalletVal = 2 * _totalSupply / 100;
_tradingOpen = true;
launchBlok = block.number;
antiMevBlock = antiMevBlock + launchBlok;
}
function _transferFrom(address sender, address toWallet, uint256 amount) internal returns (bool) {
require(sender != address(0), "No transfers from 0 wallet");
if (!_tradingOpen) { require(_nofee[sender] && _nolimit[sender], "Trading not yet open"); }
if ( !_inSwap && _isLP[toWallet] ) { _swapTaxAndLiquify(); }
if ( block.number >= launchBlok ) {
if (block.number < antiMevBlock && _isLP[sender]) {
//protect from multiwallet MEV sandwich attack
require(toWallet == tx.origin, "MEV block");
}
if (block.number < antiMevBlock + 600 && _isLP[toWallet] && sender != address(this) ) {
// protect from MEV drain attack
blockSells[block.number][toWallet] += 1;
require(blockSells[block.number][toWallet] <= 2, "MEV block");
}
}
if ( sender != address(this) && toWallet != address(this) && sender != _owner ) {
require(_checkLimits(sender, toWallet, amount), "TX over limits");
}
uint256 _taxAmount = _calculateTax(sender, toWallet, amount);
uint256 _transferAmount = amount - _taxAmount;
_balances[sender] -= amount;
_swapLimits += _taxAmount;
_balances[toWallet] += _transferAmount;
emit Transfer(sender, toWallet, amount);
return true;
}
function _checkLimits(address fromWallet, address toWallet, uint256 transferAmount) internal view returns (bool) {
bool limitCheckPassed = true;
if ( _tradingOpen && !_nolimit[fromWallet] && !_nolimit[toWallet] ) {
if ( transferAmount > _maxTxVal ) {
limitCheckPassed = false;
}
else if (
!_isLP[toWallet] && (_balances[toWallet] + transferAmount > _maxWalletVal)
) { limitCheckPassed = false; }
}
return limitCheckPassed;
}
function _checkTradingOpen(address fromWallet) private view returns (bool){
bool checkResult = false;
if ( _tradingOpen ) { checkResult = true; }
else if (_nofee[fromWallet] && _nolimit[fromWallet]) { checkResult = true; }
return checkResult;
}
function _calculateTax(address fromWallet, address recipient, uint256 amount) internal view returns (uint256) {
uint256 taxAmount;
if ( !_tradingOpen || _nofee[fromWallet] || _nofee[recipient] ) {
taxAmount = 0;
} else if ( _isLP[fromWallet] ) {
taxAmount = amount * _buyTaxrate / 100;
} else if ( _isLP[recipient] ) {
taxAmount = amount * _sellTaxrate / 100;
}
return taxAmount;
}
function exemptions(address wallet) external view returns (bool fees, bool limits) {
return (_nofee[wallet], _nolimit[wallet]);
}
function setExemptions(address wlt, bool noFees, bool noLimits) external onlyOwner {
if (noLimits || noFees) { require(!_isLP[wlt], "Cannot exempt LP"); }
_nofee[ wlt ] = noFees;
_nolimit[ wlt ] = noLimits;
}
function buyFee() external view returns(uint8) { return _buyTaxrate; }
function sellFee() external view returns(uint8) { return _sellTaxrate; }
function setFees(uint8 buyF, uint8 sellF) external onlyOwner {
require(buyF + sellF <= 10, "Roundtrip too high");
_buyTaxrate = buyF;
_sellTaxrate = sellF;
}
function marketingWallet() external view returns (address) { return _marketingWallet; }
function updateMarketingWallet(address marketingWlt) external onlyOwner {
require(!_isLP[marketingWlt], "LP cannot be tax wallet");
_marketingWallet = payable(marketingWlt);
_nofee[marketingWlt] = true;
_nolimit[marketingWlt] = true;
}
function maxWallet() external view returns (uint256) { return _maxWalletVal; }
function maxTransaction() external view returns (uint256) { return _maxTxVal; }
function swapMin() external view returns (uint256) { return _swapMin; }
function swapMax() external view returns (uint256) { return _swapMax; }
function setLimits(uint16 maxTransPermille, uint16 maxWaletPermille) external onlyOwner {
uint256 newTxAmt = _totalSupply * maxTransPermille / 1000 + 1;
require(newTxAmt >= _maxTxVal, "tx too low");
_maxTxVal = newTxAmt;
uint256 newWalletAmt = _totalSupply * maxWaletPermille / 1000 + 1;
require(newWalletAmt >= _maxWalletVal, "wallet too low");
_maxWalletVal = newWalletAmt;
}
function setTaxSwaps(uint32 minVal, uint32 minDiv, uint32 maxVal, uint32 maxDiv) external onlyOwner {
_swapMin = _totalSupply * minVal / minDiv;
_swapMax = _totalSupply * maxVal / maxDiv;
require(_swapMax>=_swapMin, "Min-Max error");
}
function _swapTaxAndLiquify() private lockTaxSwap {
uint256 _taxTokenAvailable = _swapLimits;
if ( _taxTokenAvailable >= _swapMin && _tradingOpen ) {
if ( _taxTokenAvailable >= _swapMax ) { _taxTokenAvailable = _swapMax; }
uint256 _tokensForSwap = _taxTokenAvailable;
if( _tokensForSwap > 1 * 10**_decimals ) {
_balances[address(this)] += _taxTokenAvailable;
_swapTaxTokensForEth(_tokensForSwap);
_swapLimits -= _taxTokenAvailable;
}
uint256 _contractETHBalance = address(this).balance;
if(_contractETHBalance > 0) { _distributeTaxEth(_contractETHBalance); }
}
}
function _swapTaxTokensForEth(uint256 tokenAmount) private {
_approveRouter(tokenAmount);
address[] memory path = new address[](2);
path[0] = address( this );
path[1] = _primarySwapRouter.WETH() ;
_primarySwapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp);
}
function _distributeTaxEth(uint256 amount) private {
_marketingWallet.transfer(amount);
}
function manualTaxSwapAndSend(uint8 swapTokenPercent, bool sendAllEth) external onlyOwner lockTaxSwap {
require(swapTokenPercent <= 100, "Cannot swap more than 100%");
uint256 _tokensForSwap = _balances[ address(this)] * swapTokenPercent / 100;
if (_tokensForSwap > 10 **_decimals) { _swapTaxTokensForEth(_tokensForSwap); }
if (sendAllEth) {
uint256 thisBalance = address(this).balance;
require(thisBalance >0, "No ETH");
_distributeTaxEth( thisBalance );
}
}
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(uint amountIn, uint amountOutMin,
address[] calldata path, address to, uint deadline) external;
function WETH() external pure returns (address);
function factory() 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);
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}