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 ERC20    - function balanceOf(address _who)    - function allowance(address _owner, ad ...    - function transfer(address _to, uint25 ...    - function approve(address _spender, ui ...    - function transferFrom(address _from, ...  contract StandardToken is ERC20    - function balanceOf(address _owner)    - function allowance(address _owner, ad ...    - function transfer(address _to, uint25 ...    - function approve(address _spender, ui ...    - function transferFrom(    - function increaseApproval(    - function decreaseApproval(    - function burn(uint256 _value)    - function burnFrom(address _from, uint ...  contract POBTokenERC20 is Standard ... *

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2018-08-07
*/

pragma solidity ^0.4.24;

library SafeMath {

  /**
  * @dev Multiplies two numbers, throws on overflow.
  */
  function mul(uint256 _a, uint256 _b) internal pure returns (uint256 c) {
    if (_a == 0) {
      return 0;
    }

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

  /**
  * Integer division of two numbers, truncating the quotient.
  */
  function div(uint256 _a, uint256 _b) internal pure returns (uint256) {
    return _a / _b;
  }

  /**
  * 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;
  }

  /**
  *  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;
  }
}

contract ERC20 {
  uint256 public totalSupply;

  function balanceOf(address _who) public view returns (uint256);

  function allowance(address _owner, address _spender) public view returns (uint256);

 // This generates a public event on the blockchain that will notify clients
  function transfer(address _to, uint256 _value) public returns (bool);
  
// This generates a public event on the blockchain that will notify clients
  function approve(address _spender, uint256 _value) public returns (bool);

  function transferFrom(address _from, address _to, uint256 _value) public returns (bool);

  event Transfer( address indexed from, address indexed to,  uint256 value);

  event Approval(address indexed owner, address indexed spender, uint256 value);
  
  // This notifies clients about the amount burnt
  event Burn(address indexed from, uint256 value);
}


contract StandardToken is ERC20 {
  using SafeMath for uint256;

  mapping(address => uint256) balances;

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


  /**
  * 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];
  }

  /**
   *  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];
  }

  /**
  * 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;
  }

  function approve(address _spender, uint256 _value) public returns (bool) {
    allowed[msg.sender][_spender] = _value;
    emit Approval(msg.sender, _spender, _value);
    return true;
  }

  /**
   *  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;
  }

  /**
   * 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)
   * @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;
  }

  /**
   *  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)
   * @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;
  }
  
   /**
     * Destroy tokens
     *
     * Remove `_value` tokens from the system irreversibly
     *
     * @param _value the amount of money to burn
     */
    function burn(uint256 _value) public returns (bool success) {
        require(balances[msg.sender] >= _value);   // Check if the sender has enough
        balances[msg.sender] = balances[msg.sender].sub(_value);            // Subtract from the sender
        totalSupply = totalSupply.sub(_value);                      // Updates totalSupply
        emit Burn(msg.sender, _value);
        return true;
    }

    /**
     * Destroy tokens from other account
     *
     * Remove `_value` tokens from the system irreversibly on behalf of `_from`.
     *
     * @param _from the address of the sender
     * @param _value the amount of money to burn
     */
    function burnFrom(address _from, uint256 _value) public returns (bool success) {
        require(balances[_from] >= _value);                // Check if the targeted balance is enough
        require(_value <= allowed[_from][msg.sender]);    // Check allowance
        balances[_from] = balances[_from].sub(_value);                         // Subtract from the targeted balance
        allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);             // Subtract from the sender's allowance
        totalSupply = totalSupply.sub(_value);                              // Update totalSupply
        emit Burn(_from, _value);
        return true;
    }
}

contract POBTokenERC20 is StandardToken {
    // Public variables of the token
    string public name = "POB Network";
    string public symbol = "POB";
    uint8 constant public decimals = 18;
    uint256 constant public initialSupply = 2100*100000000;

	constructor() public {
        totalSupply = initialSupply * 10 ** uint256(decimals);  // Update total supply with the decimal amount
        balances[msg.sender] = totalSupply;                // Give the creator all initial tokens
        emit Transfer(address(0), msg.sender, totalSupply);
    }
}

• 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":true,"inputs":[],"name":"initialSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_value","type":"uint256"}],"name":"burn","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","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":false,"inputs":[{"name":"_from","type":"address"},{"name":"_value","type":"uint256"}],"name":"burnFrom","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","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":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"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"},{"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":false,"name":"value","type":"uint256"}],"name":"Burn","type":"event"}]

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

bzzr://1dbf3f760cd869300450242cbaae6e3e60a2235826935280dd33823266b14dbd