sg552

Keybase proof

I hereby claim:

• I am sg552 on github.
• I am siwei (https://keybase.io/siwei) on keybase.
• I have a public key ASDL5VM_vjBIyg2sMyvVgK2bPynSWJRzF2srO4-MITf1HAo

To claim this, I am signing this object:

sg552

pragma solidity ^0.4.10;

interface ERC20 {
  function balanceOf(address who) public view returns (uint256);
  function transfer(address to, uint256 value) public returns (bool);
  function allowance(address owner, address spender) public view returns (uint256);
  function transferFrom(address from, address to, uint256 value) public returns (bool);
  function approve(address spender, uint256 value) public returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
  event Approval(address indexed owner, address indexed spender, uint256 value);