Contract Overview
Balance: 0 Ether
Ether Value: $0
Transactions: 2 txns
Token Tracker: GameCoin (GC)
Misc:
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Contract Creator: 0x16ff5fc7e4d127adbca4b25396779156944f7690at txn 0x1921114c301f647087b487447bae12a4dc5f10a916d7d2e62ef5faa67248385b
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Warning: The Compiled Contract might be susceptible to ExpExponentCleanup (medium/high-severity), EventStructWrongData (very low-severity) SolidityCompiler Bugs.

Contract Source Code Verified (Exact Match)
Contract Name: GameCoin
Compiler Text: v0.4.24+commit.e67f0147
Optimization Enabled: Yes
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

pragma solidity ^0.4.24;

// File: contracts\token\ERC20\ERC20Basic.sol

/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * See https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  function totalSupply() public view returns (uint256);
  function balanceOf(address _who) public view returns (uint256);
  function transfer(address _to, uint256 _value) public returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}

// File: contracts\math\SafeMath.sol

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {

  /**
  * @dev Multiplies two numbers, throws on overflow.
  */
  function mul(uint256 _a, uint256 _b) internal pure returns (uint256 c) {
    // Gas optimization: this is cheaper than asserting 'a' not being zero, but the
    // benefit is lost if 'b' is also tested.
    // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
    if (_a == 0) {
      return 0;
    }

    c = _a * _b;
    assert(c / _a == _b);
    return c;
  }

  /**
  * @dev Integer division of two numbers, truncating the quotient.
  */
  function div(uint256 _a, uint256 _b) internal pure returns (uint256) {
    // assert(_b > 0); // Solidity automatically throws when dividing by 0
    // uint256 c = _a / _b;
    // assert(_a == _b * c + _a % _b); // There is no case in which this doesn't hold
    return _a / _b;
  }

  /**
  * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
  */
  function sub(uint256 _a, uint256 _b) internal pure returns (uint256) {
    assert(_b <= _a);
    return _a - _b;
  }

  /**
  * @dev Adds two numbers, throws on overflow.
  */
  function add(uint256 _a, uint256 _b) internal pure returns (uint256 c) {
    c = _a + _b;
    assert(c >= _a);
    return c;
  }
}

// File: contracts\token\ERC20\BasicToken.sol

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
contract BasicToken is ERC20Basic {
  using SafeMath for uint256;

  mapping(address => uint256) internal balances;

  uint256 internal totalSupply_;

  /**
  * @dev Total number of tokens in existence
  */
  function totalSupply() public view returns (uint256) {
    return totalSupply_;
  }

  /**
  * @dev Transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) public returns (bool) {
    require(_value <= balances[msg.sender]);
    require(_to != address(0));

    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit Transfer(msg.sender, _to, _value);
    return true;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the the balance of.
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) public view returns (uint256) {
    return balances[_owner];
  }

}

// File: contracts\token\ERC20\ERC20.sol

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  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 Approval(
    address indexed owner,
    address indexed spender,
    uint256 value
  );
}

// File: contracts\token\ERC20\StandardToken.sol

/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * https://github.com/ethereum/EIPs/issues/20
 * Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is ERC20, BasicToken {

  mapping (address => mapping (address => uint256)) internal allowed;


  /**
   * @dev Transfer tokens from one address to another
   * @param _from address The address which you want to send tokens from
   * @param _to address The address which you want to transfer to
   * @param _value uint256 the amount of tokens to be transferred
   */
  function transferFrom(
    address _from,
    address _to,
    uint256 _value
  )
    public
    returns (bool)
  {
    require(_value <= balances[_from]);
    require(_value <= allowed[_from][msg.sender]);
    require(_to != address(0));

    balances[_from] = balances[_from].sub(_value);
    balances[_to] = balances[_to].add(_value);
    allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
    emit Transfer(_from, _to, _value);
    return true;
  }

  /**
   * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
   * Beware that changing an allowance with this method brings the risk that someone may use both the old
   * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
   * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
   * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value) public returns (bool) {
    allowed[msg.sender][_spender] = _value;
    emit Approval(msg.sender, _spender, _value);
    return true;
  }

  /**
   * @dev Function to check the amount of tokens that an owner allowed to a spender.
   * @param _owner address The address which owns the funds.
   * @param _spender address The address which will spend the funds.
   * @return A uint256 specifying the amount of tokens still available for the spender.
   */
  function allowance(
    address _owner,
    address _spender
   )
    public
    view
    returns (uint256)
  {
    return allowed[_owner][_spender];
  }

  /**
   * @dev Increase the amount of tokens that an owner allowed to a spender.
   * approve should be called when allowed[_spender] == 0. To increment
   * allowed value is better to use this function to avoid 2 calls (and wait until
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   * @param _spender The address which will spend the funds.
   * @param _addedValue The amount of tokens to increase the allowance by.
   */
  function increaseApproval(
    address _spender,
    uint256 _addedValue
  )
    public
    returns (bool)
  {
    allowed[msg.sender][_spender] = (
      allowed[msg.sender][_spender].add(_addedValue));
    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  /**
   * @dev Decrease the amount of tokens that an owner allowed to a spender.
   * approve should be called when allowed[_spender] == 0. To decrement
   * allowed value is better to use this function to avoid 2 calls (and wait until
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   * @param _spender The address which will spend the funds.
   * @param _subtractedValue The amount of tokens to decrease the allowance by.
   */
  function decreaseApproval(
    address _spender,
    uint256 _subtractedValue
  )
    public
    returns (bool)
  {
    uint256 oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue >= oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}

// File: contracts\GameCoin.sol

contract GameCoin is StandardToken {
    string public constant name = "GameCoin";

    string public constant symbol = "GC";

    uint8 public constant decimals = 0;

    bool public isGameCoin = true;

    /**
   * @dev Constructor that gives msg.sender all of existing tokens.
   */
    constructor(address[] owners) public {
        for (uint256 i = 0; i < owners.length; i++) {
            _mint(owners[i], 2 * 10 ** 6);
        }
    }

    /**
     * @dev Internal function that mints an amount of the token and assigns it to
     * an account. This encapsulates the modification of balances such that the
     * proper events are emitted.
     * @param _account The account that will receive the created tokens.
     * @param _amount The amount that will be created.
     */
    function _mint(address _account, uint256 _amount) internal {
        require(_account != 0);
        totalSupply_ = totalSupply_.add(_amount);
        balances[_account] = balances[_account].add(_amount);
        emit Transfer(address(0), _account, _amount);
    }
}

    Contract ABI  
[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"isGameCoin","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"owners","type":"address[]"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"}]

  Contract Creation Code Switch To Opcodes View
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

    Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000050000000000000000000000007c208fdf281463e02e8f3e254cf8e5baeadf38be000000000000000000000000b7253e01907355b770ff36a68a875b915cfe12e3000000000000000000000000d69cca68653c97391dd2981ab4e73a5dd07f9762000000000000000000000000ca57fb727a6926ae628d6eca7340751d19529cb600000000000000000000000042804c3f7824f8b4b829a758296044a74a01bbfb

-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000020
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [2] : 0000000000000000000000007c208fdf281463e02e8f3e254cf8e5baeadf38be
Arg [3] : 000000000000000000000000b7253e01907355b770ff36a68a875b915cfe12e3
Arg [4] : 000000000000000000000000d69cca68653c97391dd2981ab4e73a5dd07f9762
Arg [5] : 000000000000000000000000ca57fb727a6926ae628d6eca7340751d19529cb6
Arg [6] : 00000000000000000000000042804c3f7824f8b4b829a758296044a74a01bbfb


   Swarm Source:
bzzr://f80682a77d920270e9b8ccfca3b8310a44f2f5be5f38a3676c45c6c6e67206aa

 

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