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480f454 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | // SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
contract ControlledToken is ERC20 {
address public immutable issuer;
bool private _paused;
mapping(address => bool) private _blocked;
constructor(uint256 supply) ERC20("USD Coin", "USDC") {
issuer = msg.sender;
_mint(msg.sender, supply);
}
function decimals() public pure override returns (uint8) {
return 6;
}
function paused() external view returns (bool) {
return _paused;
}
function blocked(address account) external view returns (bool) {
return _blocked[account];
}
function setPaused(bool value) external {
require(msg.sender == issuer, "only issuer");
_paused = value;
}
function setBlocked(address account, bool value) external {
require(msg.sender == issuer, "only issuer");
_blocked[account] = value;
}
function _update(address from, address to, uint256 value) internal override {
require(!_paused, "token is paused");
require(!_blocked[from] && !_blocked[to], "account is blocked");
super._update(from, to, value);
}
}
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