Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

   - 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 ReentryProtected  contract ERC20Interface    - function totalSupply()    - function balanceOf(address _addr)    - function allowance(address _owner, ad ...    - function transfer(address _to, uint25 ...    - function transferFrom(address _from, ...    - function approve(address _spender, ui ...  contract ERC20Token is ReentryProt ...    - function ERC20Token()    - function totalSupply()    - function balanceOf(address _addr)    - function allowance(address _owner, ad ...    - function transfer(address _to, uint25 ...    - function transferFrom(address _from, ...    - function xfer(address _from, address ...    - function approve(address _spender, ui ...    - function Ownable()    - function transferOwnership(address ne ...    - function burn(uint256 _value)    - function mint(address _to, uint256 _a ...

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2017-10-26
*/

pragma solidity ^0.4.11;

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
 library SafeMath {
  function mul(uint256 a, uint256 b) internal constant returns (uint256) {
    uint256 c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

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

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

/*
file:   ReentryProtection.sol
ver:    0.3.0
updated:6-April-2016
author: Darryl Morris
email:  o0ragman0o AT gmail.com

Mutex based reentry protection protect.

This software is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU lesser General Public License for more details.
<http://www.gnu.org/licenses/>.
*/

contract ReentryProtected
{
  // The reentry protection state mutex.
  bool __reMutex;

  // This modifier can be used on functions with external calls to
  // prevent reentry attacks.
  // Constraints:
  //   Protected functions must have only one point of exit.
  //   Protected functions cannot use the `return` keyword
  //   Protected functions return values must be through return parameters.
  modifier preventReentry() {
    require(!__reMutex);
    __reMutex = true;
    _;
    delete __reMutex;
    return;
  }

  // This modifier can be applied to public access state mutation functions
  // to protect against reentry if a `preventReentry` function has already
  // set the mutex. This prevents the contract from being reenter under a
  // different memory context which can break state variable integrity.
  modifier noReentry() {
    require(!__reMutex);
    _;
  }
}

/*
file:   ERC20.sol
ver:    0.4.4-o0ragman0o
updated:26-July-2017
author: Darryl Morris
email:  o0ragman0o AT gmail.com

An ERC20 compliant token with reentry protection and safe math.

This software is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
See MIT Licence for further details.
<https://opensource.org/licenses/MIT>.

Release Notes
-------------
0.4.4-o0ragman0o
* removed state from interface
* added abstract functions of public state to interface.
* included state into contract implimentation
*/


// ERC20 Standard Token Interface with safe maths and reentry protection
contract ERC20Interface
{
  /* Structs */

  /* State Valiables */

  /* Events */
  // Triggered when tokens are transferred.
  event Transfer(
    address indexed _from,
    address indexed _to,
    uint256 _value);

  // Triggered whenever approve(address _spender, uint256 _value) is called.
  event Approval(
    address indexed _owner,
    address indexed _spender,
    uint256 _value);

  /* Modifiers */

  /* Function Abstracts */

  /// @return The total supply of tokens
  function totalSupply() public constant returns (uint256);

  /// @param _addr The address of a token holder
  /// @return The amount of tokens held by `_addr`
  function balanceOf(address _addr) public constant returns (uint256);

  /// @param _owner The address of a token holder
  /// @param _spender the address of a third-party
  /// @return The amount of tokens the `_spender` is allowed to transfer
  function allowance(address _owner, address _spender) public constant
  returns (uint256);

  /// @notice Send `_amount` of tokens from `msg.sender` to `_to`
  /// @param _to The address of the recipient
  /// @param _amount The amount of tokens to transfer
  function transfer(address _to, uint256 _amount) public returns (bool);

  /// @notice Send `_amount` of tokens from `_from` to `_to` on the condition
  /// it is approved by `_from`
  /// @param _from The address of the sender
  /// @param _to The address of the recipient
  /// @param _amount The amount of tokens to transfer
  function transferFrom(address _from, address _to, uint256 _amount)
  public returns (bool);

  /// @notice `msg.sender` approves `_spender` to spend `_amount` tokens on
  /// its behalf
  /// @param _spender The address of the approved spender
  /// @param _amount The amount of tokens to transfer
  function approve(address _spender, uint256 _amount) public returns (bool);
}

contract ERC20Token is ReentryProtected, ERC20Interface
{

  using SafeMath for uint256;

  /* State */
  // The Total supply of tokens
  uint256 totSupply;

 
  // Token ownership mapping
  mapping (address => uint256) balance;

  // Allowances mapping
  mapping (address => mapping (address => uint256)) allowed;

  /* Funtions Public */

  function ERC20Token()
  {
    // Supply limited to 2^128 rather than 2^256 to prevent potential 
    // multiplication overflow
    
    totSupply = 0;
      balance[msg.sender] = totSupply;
  }

  // Using an explicit getter allows for function overloading    
  function totalSupply()
  public
  constant
  returns (uint256)
  {
    return totSupply;
  }


  // Using an explicit getter allows for function overloading    
  function balanceOf(address _addr)
  public
  constant
  returns (uint256)
  {
    return balance[_addr];
  }

  // Using an explicit getter allows for function overloading    
  function allowance(address _owner, address _spender)
  public
  constant
  returns (uint256 remaining_)
  {
    return allowed[_owner][_spender];
  }


  // Send _value amount of tokens to address _to
  // Reentry protection prevents attacks upon the state
  function transfer(address _to, uint256 _value)
  public
  noReentry
  returns (bool)
  {
    return xfer(msg.sender, _to, _value);
  }

  // Send _value amount of tokens from address _from to address _to
  // Reentry protection prevents attacks upon the state
  function transferFrom(address _from, address _to, uint256 _value)
  public
  noReentry
  returns (bool)
  {
    require(_value <= allowed[_from][msg.sender]);
    allowed[_from][msg.sender] -= _value;
    return xfer(_from, _to, _value);
  }

  // Process a transfer internally.
  function xfer(address _from, address _to, uint256 _value)
  internal
  returns (bool)
  {
    require(_value > 0 && _value <= balance[_from]);
    balance[_from] -= _value;
    balance[_to] += _value;
    Transfer(_from, _to, _value);
    return true;
  }

  // Approves a third-party spender
  // Reentry protection prevents attacks upon the state
  function approve(address _spender, uint256 _value)
  public
  noReentry
  returns (bool)
  {
    require(balance[msg.sender] != 0);
    allowed[msg.sender][_spender] = _value;
    Approval(msg.sender, _spender, _value);
    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;


  /**
   * @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 {
    require(newOwner != address(0));      
    owner = newOwner;
  }

}


/**
 * @title Mintable token
 * @dev Simple ERC20 Token example, with mintable token creation
 * @dev Issue: * https://github.com/OpenZeppelin/zeppelin-solidity/issues/120
 * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
 */

 contract MintableBurnableToken is ERC20Token, Ownable {
  using SafeMath for uint256;
  event Mint(address indexed to, uint256 amount);
  event Burn(address indexed burner, uint256 indexed value);
  //event MintFinished();

  //bool public mintingFinished = false;

  // modifier canMint() {
    //   require(!mintingFinished);
    //   _;
    // }

 /**
     * @dev Burns a specific amount of tokens.
     * @param _value The amount of token to be burned.
     */
     function burn(uint256 _value) onlyOwner returns (bool) {
      require(_value > 0);

      address burner = msg.sender;
      balance[burner] = balance[burner].sub(_value);
      totSupply = totSupply.sub(_value);
      Burn(burner, _value);
    }


  /**
   * @dev Function to mint tokens
   * @param _to The address that will recieve the minted tokens.
   * @param _amount The amount of tokens to mint.
   * @return A boolean that indicates if the operation was successful.
   */
   function mint(address _to, uint256 _amount) onlyOwner returns (bool) {
    totSupply = totSupply.add(_amount);
    balance[_to] = balance[_to].add(_amount);
    Mint(_to, _amount);
    Transfer(0x0, _to, _amount);
    return true;
  }
}
/**
 * @title SimpleToken
 * @dev Very simple ERC20 Token example, where all tokens are pre-assigned to the creator. 
 * Note they can later distribute these tokens as they wish using `transfer` and other
 * `StandardToken` functions.
 */
 contract CombiCoin_v2 is MintableBurnableToken {

  string public constant name = "CombiCoin";
  string public constant symbol = "COMBI";
  uint256 public constant decimals = 10;
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"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,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_amount","type":"uint256"}],"name":"mint","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_value","type":"uint256"}],"name":"burn","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_addr","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining_","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"amount","type":"uint256"}],"name":"Mint","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"burner","type":"address"},{"indexed":true,"name":"value","type":"uint256"}],"name":"Burn","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"},{"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"}]

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

bzzr://8ef9eab43e1f4634d1f2734232cb17f5680735e82296b469b8825bea769f71ec