Contract

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)
•  contract ERC20Basic
•    - function balanceOf(address who)
•    - function transfer(address to, uint256 ...
•  contract BasicToken is ERC20Basic
•    - function transfer(address _to, uint25 ...
•    - function balanceOf(address _owner)
•  contract ERC20 is ERC20Basic
•    - function allowance(address owner, add ...
•    - function transferFrom(address from, a ...
•    - function approve(address spender, uin ...
•  contract StandardToken is ERC20, B ...
•    - function transferFrom(address _from, ...
•    - function approve(address _spender, ui ...
•    - function allowance(address _owner, ad ...
•    - function increaseApproval (address _s ...
•    - function decreaseApproval (address _s ...
•  contract Ownable
•    - function Ownable()
•    - function transferOwnership(address ne ...
•  contract BBTToken is StandardToken ... *
•    - function BBTToken(address chachawalle ...
•    - function transfer(address _to, uint25 ...
•    - function transferFrom(address _from, ...

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2018-08-22
*/

pragma  solidity ^0.4.24;

//0x2d0Ea9F9591205A642eb01826Ba4Fa019eB0efc6 token address

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
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;
  }
}

/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/179
 */
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);
}

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
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);
    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];
  }

}

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
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);
}

/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * @dev https://github.com/ethereum/EIPs/issues/20
 * @dev 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(_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);
    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;
    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];
  }

  /**
   * 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
   */
  function increaseApproval (address _spender, uint _addedValue) public returns (bool success) {
    allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  function decreaseApproval (address _spender, uint _subtractedValue) public returns (bool success) {
    uint oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue > oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}

/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
contract Ownable {
  address public owner;


  event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);


  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  function Ownable() {
    owner = msg.sender;
  }


  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }


  /**
   * @dev Allows the current owner to transfer control of the contract to a newOwner.
   * @param newOwner The address to transfer ownership to.
   */
  function transferOwnership(address newOwner) onlyOwner public {
    require(newOwner != address(0));
    OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }

}

contract BBTToken is StandardToken, Ownable {
    string constant public name = "Bao Bao Token";
    string constant public symbol = "BBT";
    uint8 constant public decimals = 18;
    //bool public isLocked = true;

    function BBTToken(address chachawallet) {
        totalSupply = 1 * 10 ** (8+18);
        balances[chachawallet] = totalSupply;
    }

    //modifier illegalWhenLocked() {
    //    require(!isLocked || msg.sender == owner);
    //    _;
    //}

     //should be called by crowdSale when crowdSale is finished
    //function unlock() onlyOwner public{
    //    isLocked = true;
    //}

    function transfer(address _to, uint256 _value)public returns (bool){
        return super.transfer(_to, _value);
    }

    function transferFrom(address _from, address _to, uint256 _value)public returns (bool) {
        return super.transferFrom(_from, _to, _value);
    }
}

• 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":"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":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","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":"owner","outputs":[{"name":"","type":"address"}],"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":"success","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"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"chachawallet","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"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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

000000000000000000000000dca6c0569bb618f8dd91e259681e26363dbc16d4

-----Decoded View---------------
Arg [0] : chachawallet (address): 0xDcA6c0569BB618F8dd91E259681e26363dBC16d4

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000dca6c0569bb618f8dd91e259681e26363dbc16d4

bzzr://583d960ab0620b1dbab8ca5c367a2a5fbce9a4a32353f5fca034c5d84b54557a