Transaction Hash:
Block:
19591750 at Apr-05-2024 07:54:47 PM +UTC
Transaction Fee:
0.000915141820407336 ETH
$2.30
Gas Used:
46,548 Gas / 19.660174882 Gwei
Emitted Events:
347 |
vitaliksmartgas.Approval( owner=[Sender] 0xa482e9e0dda3d46c97b4ced5ac3312a17e3a020f, spender=0x00000000...43aC78BA3, value=115792089237316195423570985008687907853269984665640564039457584007913129639935 )
|
Account State Difference:
Address | Before | After | State Difference | ||
---|---|---|---|---|---|
0x1f9090aa...8e676c326
Miner
| 6.035128707800359321 Eth | 6.035129311624785709 Eth | 0.000000603824426388 | ||
0x2A5fA016...F344677Aa | |||||
0xa482E9e0...17e3A020F |
0.016576805346509131 Eth
Nonce: 1
|
0.015661663526101795 Eth
Nonce: 2
| 0.000915141820407336 |
Execution Trace
vitaliksmartgas.approve( spender=0x000000000022D473030F116dDEE9F6B43aC78BA3, amount=115792089237316195423570985008687907853269984665640564039457584007913129639935 ) => ( True )
approve[ERC20 (ln:290)]
_msgSender[ERC20 (ln:291)]
_approve[ERC20 (ln:292)]
Approval[ERC20 (ln:473)]
// _ __ ___ __ __ // _ __(_) /_____ _/ (_) /__ _________ ___ ____ ______/ /_ ____ _____ ______ //| | / / / __/ __ `/ / / //_/ / ___/ __ `__ \/ __ `/ ___/ __/ / __ `/ __ `/ ___/ //| |/ / / /_/ /_/ / / / ,< (__ ) / / / / / /_/ / / / /_ / /_/ / /_/ (__ ) //|___/_/\__/\__,_/_/_/_/|_| /____/_/ /_/ /_/\__,_/_/ \__/ \__, /\__,_/____/ // /____/ // SPDX-License-Identifier: UNLICENSED // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); } // File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } // File: @openzeppelin/contracts/utils/Context.sol // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ 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; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. */ 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; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, allowance(owner, spender) + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = allowance(owner, spender); require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `from` to `to`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. */ 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); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ 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); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ 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); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ 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); } /** * @dev Updates `owner` s allowance for `spender` based on spent `amount`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. */ 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); } } } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } // File: @openzeppelin/contracts/access/Ownable.sol // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } pragma solidity ^0.8.0; interface IRouter { function WETH() external pure returns (address); function factory() external pure returns (address); function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); } interface IFactory { function createPair(address tokenA, address tokenB) external returns (address pair); function getPair(address tokenA, address tokenB) external view returns (address pair); } contract vitaliksmartgas is Ownable, ERC20('vitalik smart gas ', '$VSG ') { IRouter public Router; uint256 public buyTax; uint256 public sellTax; uint256 public devSplit; uint256 public marketingSplit; uint256 public lpSplit; uint256 public swapAtAmount; address payable public marketingWallet; address payable public teamWallet; address public swapPair; address dead = 0x000000000000000000000000000000000000dEaD; mapping (address => bool) public automatedMarketMakerPairs; mapping (address => bool) private _isExcludedFromFees; constructor( uint256 _buyTax, uint256 _sellTax, uint256 _devSplit, uint256 _marketingSplit, uint256 _lpSplit, address _router, address _MarketingWallet, address _teamWallet, uint256 initialSupply, address realOwner ) { marketingWallet = payable(_MarketingWallet); teamWallet = payable(_teamWallet); setBuyTax(_buyTax); setSellTax(_sellTax); setTaxSplit(_devSplit, _marketingSplit, _lpSplit); excludeFromFees(realOwner, true); excludeFromFees(address(this), true); _mint(realOwner, initialSupply * (10**18)); swapAtAmount = totalSupply() * 10 / 1000000; // .01% updateSwapRouter(_router); transferOwnership(realOwner); } event ExcludeFromFees(address indexed account, bool isExcluded); event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value); function setBuyTax(uint256 _newBuyTax) public onlyOwner { buyTax = _newBuyTax; require(_newBuyTax <= 2000, "Cannot exceed 2000"); } function setSellTax(uint256 _newSellTax) public onlyOwner { sellTax = _newSellTax; require(_newSellTax <= 2000, "TotalFee cannot exceed 2000"); } function setTaxSplit(uint256 _devSplit, uint256 _marketingSplit, uint256 _lpSplit) public onlyOwner { devSplit = _devSplit; marketingSplit = _marketingSplit; lpSplit = _lpSplit; require(_devSplit + _marketingSplit + _lpSplit == 100, "Split combination must equal 100"); } function setMarketingWallet(address payable newMarketingWallet) public onlyOwner { if (_isExcludedFromFees[marketingWallet] = true) excludeFromFees(marketingWallet, false); marketingWallet = newMarketingWallet; if (_isExcludedFromFees[marketingWallet] = false) excludeFromFees(marketingWallet, true); } function setTeamWallet(address payable newTeamWallet) public onlyOwner { if (_isExcludedFromFees[teamWallet] = true) excludeFromFees(teamWallet, false); teamWallet = newTeamWallet; if (_isExcludedFromFees[teamWallet] = false) excludeFromFees(teamWallet, true); } function excludeFromFees(address account, bool excluded) public onlyOwner { require(_isExcludedFromFees[account] != excluded, "Account is already the value of 'excluded'"); _isExcludedFromFees[account] = excluded; emit ExcludeFromFees(account, excluded); } function _setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner { require(automatedMarketMakerPairs[pair] != value, "Automated market maker pair is already set to that value"); automatedMarketMakerPairs[pair] = value; emit SetAutomatedMarketMakerPair(pair, value); } function updateSwapRouter(address newAddress) public onlyOwner { require(newAddress != address(Router), "The router already has that address"); Router = IRouter(newAddress); address bnbPair = IFactory(Router.factory()) .getPair(address(this), Router.WETH()); if(bnbPair == address(0)) bnbPair = IFactory(Router.factory()).createPair(address(this), Router.WETH()); if (automatedMarketMakerPairs[bnbPair] != true && bnbPair != address(0) ){ _setAutomatedMarketMakerPair(bnbPair, true); } _approve(address(this), address(Router), ~uint256(0)); swapPair = bnbPair; } function isExcludedFromFees(address account) public view returns(bool) { return _isExcludedFromFees[account]; } function setSwapAtAmount(uint256 _newSwapAtAmount) external onlyOwner { swapAtAmount = _newSwapAtAmount; } bool private inSwapAndLiquify; modifier lockTheSwap { inSwapAndLiquify = true; _; inSwapAndLiquify = false; } function _transfer( address from, address to, uint256 amount ) internal override { // if any account belongs to _isExcludedFromFee account then remove the fee if(!_isExcludedFromFees[from] && !_isExcludedFromFees[to]) { if(automatedMarketMakerPairs[to] || automatedMarketMakerPairs[from]) { if (balanceOf(address(this)) > swapAtAmount && !inSwapAndLiquify && automatedMarketMakerPairs[to]) SwapFees(); uint256 currentFee = automatedMarketMakerPairs[to] ? sellTax : buyTax; uint256 extraFee =(amount * currentFee)/10000; if (extraFee > 0) { super._transfer(from, address(this), extraFee); amount = amount - extraFee; } } } super._transfer(from, to, amount); } function SwapFees() private lockTheSwap { uint256 tokensToAddLiquidityWith = 0; uint256 contractTokenBalance = balanceOf(address(this)); if(lpSplit > 0) tokensToAddLiquidityWith = contractTokenBalance * lpSplit / 200; uint256 toSwap = contractTokenBalance-tokensToAddLiquidityWith; uint256 initialBalance = address(this).balance; address[] memory path = new address[](2); path[0] = address(this); path[1] = Router.WETH(); try Router.swapExactTokensForETHSupportingFeeOnTransferTokens( toSwap, 0, path, address(this), block.timestamp ) {} catch { revert("Failed to swap to eth");} if(lpSplit > 0) { uint256 deltaBalance = address(this).balance-initialBalance; uint256 bnbToAddLiquidityWith = (deltaBalance * lpSplit) / (200 - lpSplit); addLiquidity(tokensToAddLiquidityWith, bnbToAddLiquidityWith); } if(marketingSplit > 0) { uint256 marketingAmount = (address(this).balance * marketingSplit) / (marketingSplit + devSplit); payable(marketingWallet).transfer(marketingAmount); } if(devSplit > 0) payable(teamWallet).transfer(address(this).balance); } function manualSwapAndBurn() external onlyOwner { SwapFees(); } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { // add the liquidity try Router.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, // slippage is unavoidable 0, // slippage is unavoidable dead, block.timestamp ) {} catch {revert("Failed to add liquidity");} } function withdawlBNB() external onlyOwner { payable(msg.sender).transfer(address(this).balance); } function withdrawlToken(address _tokenAddress) external onlyOwner { ERC20(_tokenAddress).transfer(msg.sender, ERC20(_tokenAddress).balanceOf(address(this))); } // to receive Eth From Router when Swapping receive() external payable {} }