contract ERC223 {
  uint public totalSupply;

    // ERC223 functions
    function name() public view returns (string _name);
    function symbol() public view returns (string _symbol);
    function decimals() public view returns (uint8 _decimals);
    function totalSupply() public view returns (uint256 _supply);
    function balanceOf(address who) public view returns (uint);

    // ERC223 functions and events
    function transfer(address to, uint value) public returns (bool ok);
    function transfer(address to, uint value, bytes data) public returns (bool ok);
    function transfer(address to, uint value, bytes data, string custom_fallback) public returns (bool ok);
    event Transfer(address indexed from, address indexed to, uint value, bytes indexed data);
    event Transfer(address indexed _from, address indexed _to, uint256 _value);
}
/**
 * @title ERC223
 * @dev ERC223 contract interface with ERC20 functions and events
 *      Fully backward compatible with ERC20
 *      Recommended implementation used at https://github.com/Dexaran/ERC223-token-standard/tree/Recommended
 */
function transfer(address to, uint value) public returns (bool ok);
// ERC223 functions and events