contract ERC20Interface {
  // Get the total token supply
  function totalSupply() constant returns (uint256 totalSupply);

  // Get the account balance of another account with address _owner
  function balanceOf(address _owner) constant returns (uint256 balance);

  // Send _value amount of tokens to address _to
  function transfer(address _to, uint256 _value) returns (bool success);

  // Send _value amount of tokens from address _from to address _to
  function transferFrom(address _from, address _to, uint256 _value) returns (bool success);

  // Allow _spender to withdraw from your account, multiple times, up to the _value amount.
  // If this function is called again it overwrites the current allowance with _value.
  // this function is required for some DEX functionality
  function approve(address _spender, uint256 _value) returns (bool success);

  // Returns the amount which _spender is still allowed to withdraw from _owner
  function allowance(address _owner, address _spender) constant returns (uint256 remaining);

  // Triggered when tokens are transferred.
  event Transfer(address indexed _from, address indexed _to, uint256 _value);

  // Triggered whenever approve(address _spender, uint256 _value) is called.
  event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}
// ----------------------------------------------------------------------------------------------
// Sample fixed supply token contract
// Enjoy. (c) BokkyPooBah 2017. The MIT Licence.
// ----------------------------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/issues/20
function transfer(address _to, uint256 _value) returns (bool success);
// Send _value amount of tokens to address _to