---

BTA is fully compatible with ERC20 standard，interfaces and events as follows：

      // ----------------------------------------------------------------------------
      // ERC Token Standard #20 Interface
      // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
      // ----------------------------------------------------------------------------
      contract ERC20Interface {
          function totalSupply() public constant returns (uint);
          function balanceOf(address tokenOwner) public constant returns (uint balance);
          function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
          function transfer(address to, uint tokens) public returns (bool success);
          function approve(address spender, uint tokens) public returns (bool success);
          function transferFrom(address from, address to, uint tokens) public returns (bool success);

          event Transfer(address indexed from, address indexed to, uint tokens);
          event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
        }

EIP reference：

eip-20 : https://eips.ethereum.org/EIPS/eip-20

Implementation reference：

openzeppelin-contracts : https://github.com/OpenZeppelin/openzeppelin-contracts/tree/master/contracts/token/ERC20