netkiller

pragma solidity ^0.4.19;
contract ERC721 {
   string constant private tokenName = "My ERC721 Token";
   string constant private tokenSymbol = "MET";
   uint256 constant private totalTokens = 1000000;
   mapping(address => uint) private balances;
   mapping(uint256 => address) private tokenOwners;
   mapping(uint256 => bool) private tokenExists;
   mapping(address => mapping (address => uint256)) private allowed;
   mapping(address => mapping(uint256 => uint256)) private ownerTokens;