Космокриптовалюта

[myltik1702]

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract SpaceCoin is ERC20 {
constructor(uint256 initialSupply) ERC20("SpaceCoin", "SPC") {
_mint(msg.sender, initialSupply);
}

// Дополнительно: ограничьте передачу токенов на определённый срок
mapping(address => uint256) private lockTime;


function lockTokens(uint256 time) public {
    lockTime[msg.sender] = block.timestamp + time;
}

function _beforeTokenTransfer(
    address from,
    address to,
    uint256 amount
) internal override {
    require(lockTime[from] < block.timestamp, "Tokens are locked");
    super._beforeTokenTransfer(from, to, amount);
}

}
SpaceCoin