Contract Source Code (Solidity Multiple files format)

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pragma solidity ^0.5.12;

import "./ERC20Standard.sol";

contract AirrichToken is ERC20Standard {
 constructor() public {
  totalSupply = 21000000000000000;
  name = "Airrich Token";
  decimals = 8;
  symbol = "Airrich Token";
  version = "1.0";
  balances[msg.sender] = totalSupply;
 }
}

pragma solidity ^0.5.7;

library SafeMath {

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b);

        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0);
        uint256 c = a / b;
        
 return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a);
        uint256 c = a - b;

        return c;
    }

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a);

        return c;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b != 0);
        return a % b;
    }
}

contract ERC20Standard {
 using SafeMath for uint256;
 uint public totalSupply;
 
 string public name;
 uint8 public decimals;
 string public symbol;
 string public version;
 
 mapping (address => uint256) balances;
 mapping (address => mapping (address => uint)) allowed;

 //Fix for short address attack against ERC20
 modifier onlyPayloadSize(uint size) {
  assert(msg.data.length == size + 4);
  _;
 } 

 function balanceOf(address _owner) public view returns (uint balance) {
  return balances[_owner];
 }

 function transfer(address _recipient, uint _value) public onlyPayloadSize(2*32) {
     require(balances[msg.sender] >= _value && _value > 0);
     balances[msg.sender] = balances[msg.sender].sub(_value);
     balances[_recipient] = balances[_recipient].add(_value);
     emit Transfer(msg.sender, _recipient, _value);        
        }

 function transferFrom(address _from, address _to, uint _value) public {
     require(balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0);
            balances[_to] = balances[_to].add(_value);
            balances[_from] = balances[_from].sub(_value);
            allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
            emit Transfer(_from, _to, _value);
        }

 function  approve(address _spender, uint _value) public {
  allowed[msg.sender][_spender] = _value;
  emit Approval(msg.sender, _spender, _value);
 }

 function allowance(address _spender, address _owner) public view returns (uint balance) {
  return allowed[_owner][_spender];
 }

 //Event which is triggered to log all transfers to this contract's event log
 event Transfer(
  address indexed _from,
  address indexed _to,
  uint _value
  );
  
 //Event which is triggered whenever an owner approves a new allowance for a spender.
 event Approval(
  address indexed _owner,
  address indexed _spender,
  uint _value
  );
}

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[{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_owner","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":false,"internalType":"uint256","name":"_value","type":"uint256"}],"name":"Transfer","type":"event"},{"constant":true,"inputs":[{"internalType":"address","name":"_spender","type":"address"},{"internalType":"address","name":"_owner","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_spender","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"approve","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_recipient","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transfer","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"}]

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bzzr://58dcd3dc985132f16a0d85f230373d412b147dbc39462c5582cf8fbe8df2be7d