Production-ReadyTechnical Solutions

contract TokenSystem {
  // Access Control
  bytes32 public constant ADMIN_ROLE;
  bytes32 public constant MINTER_ROLE;
  bytes32 public constant BURNER_ROLE;

  // Core Functions
  function mint(address to, uint256 amount)
    external onlyRole(MINTER_ROLE);

  function burn(uint256 amount)
    external onlyRole(BURNER_ROLE);

  // Upgradeable
  function _authorizeUpgrade()
    internal onlyRole(ADMIN_ROLE);
}