Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

library SafeMath    - function mul(uint256 a, uint256 b)    - function div(uint256 a, uint256 b)    - function sub(uint256 a, uint256 b)    - function add(uint256 a, uint256 b)    - function toUINT112(uint256 a)    - function toUINT120(uint256 a)    - function toUINT128(uint256 a)  contract ERC20Basic    - function balanceOf(address who)    - function transfer(address to, uint256 ...  contract ERC20 is ERC20Basic    - function allowance(address owner, add ...    - function transferFrom(address from, a ...    - function approve(address spender, uin ...  contract BasicToken is ERC20Basic    - function transfer(address _to, uint25 ...    - function balanceOf(address _owner)  contract StandardToken is ERC20, B ...    - function transferFrom(address _from, ...    - function approve(address _spender, ui ...    - function allowance(address _owner, ad ...  contract BitMessage is StandardTok ... *    - function BitMessage()

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2018-11-22
*/

pragma solidity ^0.4.15;

library SafeMath {
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  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 c;
  }

  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    assert(b <= a);
    return a - b;
  }

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

  function toUINT112(uint256 a) internal pure returns(uint112) {
    assert(uint112(a) == a);
    return uint112(a);
  }

  function toUINT120(uint256 a) internal pure returns(uint120) {
    assert(uint120(a) == a);
    return uint120(a);
  }

  function toUINT128(uint256 a) internal pure returns(uint128) {
    assert(uint128(a) == a);
    return uint128(a);
  }
}

contract ERC20Basic {
  uint256 public totalSupply;
  function balanceOf(address who) public constant returns (uint256);
  function transfer(address to, uint256 value) public returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}

contract ERC20 is ERC20Basic {
  function allowance(address owner, address spender) public constant 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);
}

contract BasicToken is ERC20Basic {
  using SafeMath for uint256;

  mapping(address => uint256) balances;

  /**
  * @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(_to != address(0));
    require(_value <= balances[msg.sender]);

    // SafeMath.sub will throw if there is not enough balance.
    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 constant returns (uint256 balance) {
    return balances[_owner];
  }

}

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(_to != address(0));
    require(_value <= balances[_from]);
    require(_value <= allowed[_from][msg.sender]);

    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 constant returns (uint256 remaining) {
    return allowed[_owner][_spender];
  }

}

contract BitMessage is StandardToken {

  string public constant name = "BitMessage";
  string public constant symbol = "MSG";
  uint8 public constant decimals = 18;


  uint256 public constant INITIAL_SUPPLY = 100000000000 * (10 ** uint256(decimals));

  /**
   * @dev Constructor that gives msg.sender all of existing tokens.
   */
  function BitMessage() public {
    totalSupply = INITIAL_SUPPLY;
    balances[msg.sender] = INITIAL_SUPPLY;
  }

}

• No Contract Security Audit Submitted- Submit Audit Here

[{"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":"INITIAL_SUPPLY","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"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":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"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"}]

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

bzzr://df73e555d36bd214fab674b183d5b6d890dffe63f5759379763dcfb32d9db5ac