// SPDX-License-Identifier: CC0
pragma solidity ^0.8.0;

interface IERC20 {
  event Transfer(address indexed from, address indexed to, uint256 value);
  event Approval(address indexed owner, address indexed spender, uint256 value);

  function name() external view returns (string memory);
  function symbol() external view returns (string memory);
  function decimals() external view returns (uint8);

  function totalSupply() external view returns (uint256);

  function balanceOf(address owner) external view returns (uint256);
  function transfer(address to, uint256 value) external returns (bool);
  function transferFrom(address from, address to, uint256 value) external returns (bool);

  function approve(address spender, uint256 value) external returns (bool);
  function allowance(address owner, address spender) external view returns (uint256);
}
