USDTRTOKEN (USDT)

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.30;

contract USDTRTOKEN {
    string public name = "USDTRTOKEN";
    string public symbol = "USDT";
    uint8 public decimals = 6;
    uint256 public totalSupply;
    uint256 public launchDate;

    mapping(address => uint256) public balanceOf;
    mapping(address => mapping(address => uint256)) public allowance;

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
    event Burn(address indexed burner, uint256 value);

    constructor(uint256 initialSupply) {
        totalSupply = initialSupply * 10 ** uint256(decimals);
        balanceOf[msg.sender] = totalSupply;
        launchDate = block.timestamp;
    }

    modifier onlyAfterLock() {
        require(block.timestamp >= launchDate + 180 days, "Token is locked for 180 days");
        _;
    }

    function transfer(address _to, uint256 _value) public onlyAfterLock returns (bool success) {
        require(_to != address(0), "Invalid address");
        require(balanceOf[msg.sender] >= _value, "Insufficient balance");
        balanceOf[msg.sender] -= _value;
        balanceOf[_to] += _value;
        emit Transfer(msg.sender, _to, _value);
        return true;
    }

    function approve(address _spender, uint256 _value) public onlyAfterLock returns (bool success) {
        allowance[msg.sender][_spender] = _value;
        emit Approval(msg.sender, _spender, _value);
        return true;
    }

    function transferFrom(address _from, address _to, uint256 _value) public onlyAfterLock returns (bool success) {
        require(_to != address(0), "Invalid address");
        require(balanceOf[_from] >= _value, "Insufficient balance");
        require(allowance[_from][msg.sender] >= _value, "Allowance exceeded");
        balanceOf[_from] -= _value;
        balanceOf[_to] += _value;
        allowance[_from][msg.sender] -= _value;
        emit Transfer(_from, _to, _value);
        return true;
    }

    function burn(uint256 _value) public onlyAfterLock returns (bool success) {
        require(balanceOf[msg.sender] >= _value, "Insufficient balance");
        balanceOf[msg.sender] -= _value;
        totalSupply -= _value;
        emit Burn(msg.sender, _value);
        return true;
    }
}