ERC20

ERC20

// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md   
contract ERC20 {                                                                   
    function totalSupply() constant returns (uint256 totalSupply);                 
    function balanceOf(address _owner) constant returns (uint256 balance);         
    function transfer(address _to, uint256 _value) returns (bool success);         
    function transferFrom(address _from, address _to, uint256 _value) returns (bool success);
    function approve(address _spender, uint256 _value) returns (bool success);  
    function allowance(address _owner, address _spender) constant returns (uint256 remaining);
    event Transfer(address indexed _from, address indexed _to, uint256 _value); 
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}