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 contract Ownable    - function owner()    - function isOwner()    - function renounceOwnership()    - function transferOwnership(address ne ...    - function _transferOwnership(address n ... interface IERC20    - function totalSupply()    - function balanceOf(address who)    - function allowance(address owner, add ...    - function transfer(address to, uint256 ...    - function approve(address spender, uin ...    - function transferFrom(address from, a ... 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 mod(uint256 a, uint256 b)  contract ERC20 is IERC20    - function totalSupply()    - function balanceOf(address owner)    - function allowance(    - function transfer(address to, uint256 ...    - function approve(address spender, uin ...    - function transferFrom(    - function increaseAllowance(    - function decreaseAllowance(    - function _transfer(address from, addr ...    - function _mint(address account, uint2 ...    - function _burn(address account, uint2 ...    - function _burnFrom(address account, u ...  contract PartialERC20 is ERC20    - function totalSupply()    - function balanceOf(address owner)    - function allowance(    - function approve(address spender, uin ...    - function increaseAllowance(    - function decreaseAllowance(    - function _transfer(address from, addr ...    - function _mint(address account, uint2 ...    - function _burn(address account, uint2 ...    - function _burnFrom(address account, u ...  contract PrivateToken is PartialER ...    - function numberOfTokenHolders()    - function isTokenHolder(address addr)    - function freeze()    - function _recordNewTokenHolder(addres ...    - function _removeTokenHolder(address h ...    - function transfer(address to, uint256 ...    - function transferFrom(address from, a ...  contract KTFForTestMigration is Pa ...    - function migrateFromPKTF()    - function mint(address to,uint256 valu ...  contract MintableWithVoucher is Pr ...    - function isVoucherUsed(uint64 _vouche ...    - function markVoucherAsUsed(uint64 _vo ...    - function getHolderRedemptionCount(byt ...    - function isVoucherExpired(uint256 exp ...    - function expireTomorrow()    - function expireNow()    - function redeemVoucher(    - function mint(address to,uint256 valu ...    - function burn(uint256 value)    - function burn(address account, uint25 ...    - function burnFrom(address account, ui ...  contract PrivateKatinrunFoudation ... *

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/**
 *Submitted for verification at Etherscan.io on 2019-01-24
*/

pragma solidity ^0.4.24;

// File: openzeppelin-solidity/contracts/ownership/Ownable.sol

/**
 * @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 private _owner;

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

  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  constructor() internal {
    _owner = msg.sender;
    emit OwnershipTransferred(address(0), _owner);
  }

  /**
   * @return the address of the owner.
   */
  function owner() public view returns(address) {
    return _owner;
  }

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

  /**
   * @return true if `msg.sender` is the owner of the contract.
   */
  function isOwner() public view returns(bool) {
    return msg.sender == _owner;
  }

  /**
   * @dev Allows the current owner to relinquish control of the contract.
   * @notice Renouncing to ownership will leave the contract without an owner.
   * It will not be possible to call the functions with the `onlyOwner`
   * modifier anymore.
   */
  function renounceOwnership() public onlyOwner {
    emit OwnershipTransferred(_owner, address(0));
    _owner = address(0);
  }

  /**
   * @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) public onlyOwner {
    _transferOwnership(newOwner);
  }

  /**
   * @dev Transfers control of the contract to a newOwner.
   * @param newOwner The address to transfer ownership to.
   */
  function _transferOwnership(address newOwner) internal {
    require(newOwner != address(0));
    emit OwnershipTransferred(_owner, newOwner);
    _owner = newOwner;
  }
}

// File: openzeppelin-solidity/contracts/token/ERC20/IERC20.sol

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
interface IERC20 {
  function totalSupply() external view returns (uint256);

  function balanceOf(address who) external view returns (uint256);

  function allowance(address owner, address spender)
    external view returns (uint256);

  function transfer(address to, uint256 value) external returns (bool);

  function approve(address spender, uint256 value)
    external returns (bool);

  function transferFrom(address from, address to, uint256 value)
    external returns (bool);

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

  event Approval(
    address indexed owner,
    address indexed spender,
    uint256 value
  );
}

// File: openzeppelin-solidity/contracts/math/SafeMath.sol

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

  /**
  * @dev Multiplies two numbers, reverts on overflow.
  */
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    // Gas optimization: this is cheaper than requiring '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;
    }

    uint256 c = a * b;
    require(c / a == b);

    return c;
  }

  /**
  * @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
  */
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b > 0); // Solidity only automatically asserts 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;
  }

  /**
  * @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
  */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b <= a);
    uint256 c = a - b;

    return c;
  }

  /**
  * @dev Adds two numbers, reverts on overflow.
  */
  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    require(c >= a);

    return c;
  }

  /**
  * @dev Divides two numbers and returns the remainder (unsigned integer modulo),
  * reverts when dividing by zero.
  */
  function mod(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b != 0);
    return a % b;
  }
}

// File: openzeppelin-solidity/contracts/token/ERC20/ERC20.sol

/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
 * Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract ERC20 is IERC20 {
  using SafeMath for uint256;

  mapping (address => uint256) private _balances;

  mapping (address => mapping (address => uint256)) private _allowed;

  uint256 private _totalSupply;

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

  /**
  * @dev Gets the balance of the specified address.
  * @param owner The address to query 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];
  }

  /**
   * @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 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) {
    _transfer(msg.sender, 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) {
    require(spender != address(0));

    _allowed[msg.sender][spender] = value;
    emit Approval(msg.sender, spender, value);
    return true;
  }

  /**
   * @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 <= _allowed[from][msg.sender]);

    _allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
    _transfer(from, to, value);
    return true;
  }

  /**
   * @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 increaseAllowance(
    address spender,
    uint256 addedValue
  )
    public
    returns (bool)
  {
    require(spender != address(0));

    _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 decreaseAllowance(
    address spender,
    uint256 subtractedValue
  )
    public
    returns (bool)
  {
    require(spender != address(0));

    _allowed[msg.sender][spender] = (
      _allowed[msg.sender][spender].sub(subtractedValue));
    emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
    return true;
  }

  /**
  * @dev Transfer token for a specified addresses
  * @param from The address to transfer from.
  * @param to The address to transfer to.
  * @param value The amount to be transferred.
  */
  function _transfer(address from, address to, uint256 value) internal {
    require(value <= _balances[from]);
    require(to != address(0));

    _balances[from] = _balances[from].sub(value);
    _balances[to] = _balances[to].add(value);
    emit Transfer(from, to, value);
  }

  /**
   * @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 value The amount that will be created.
   */
  function _mint(address account, uint256 value) internal {
    require(account != 0);
    _totalSupply = _totalSupply.add(value);
    _balances[account] = _balances[account].add(value);
    emit Transfer(address(0), account, value);
  }

  /**
   * @dev Internal function that burns an amount of the token of a given
   * account.
   * @param account The account whose tokens will be burnt.
   * @param value The amount that will be burnt.
   */
  function _burn(address account, uint256 value) internal {
    require(account != 0);
    require(value <= _balances[account]);

    _totalSupply = _totalSupply.sub(value);
    _balances[account] = _balances[account].sub(value);
    emit Transfer(account, address(0), value);
  }

  /**
   * @dev Internal function that burns an amount of the token of a given
   * account, deducting from the sender's allowance for said account. Uses the
   * internal burn function.
   * @param account The account whose tokens will be burnt.
   * @param value The amount that will be burnt.
   */
  function _burnFrom(address account, uint256 value) internal {
    require(value <= _allowed[account][msg.sender]);

    // Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
    // this function needs to emit an event with the updated approval.
    _allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
      value);
    _burn(account, value);
  }
}

// File: contracts/PartialERC20.sol

/**
    * @title Standard ERC20 token
    *
    * @dev Implementation of the basic standard token.
    * https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
    * Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract PartialERC20 is ERC20 {
    
    using SafeMath for uint256;

    mapping (address => uint256) internal _balances;
    mapping (address => mapping (address => uint256)) internal _allowed;

    uint256 internal _totalSupply;

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

    /**
        * @dev Gets the balance of the specified address.
        * @param owner The address to query 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];
    }

    /**
        * @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 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) {
        require(spender != address(0));

        _allowed[msg.sender][spender] = value;
        emit Approval(msg.sender, spender, value);
        return true;
    }

    /**
        * @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 increaseAllowance(
        address spender,
        uint256 addedValue
    )
        public
        returns (bool)
    {
        require(spender != address(0));

        _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 decreaseAllowance(
        address spender,
        uint256 subtractedValue
    )
        public
        returns (bool)
    {
        require(spender != address(0));

        _allowed[msg.sender][spender] = (
        _allowed[msg.sender][spender].sub(subtractedValue));
        emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
        return true;
    }

    /**
        * @dev Transfer token for a specified addresses
        * @param from The address to transfer from.
        * @param to The address to transfer to.
        * @param value The amount to be transferred.
        */
    function _transfer(address from, address to, uint256 value) internal {
        require(to != address(0));

        _balances[from] = _balances[from].sub(value);
        _balances[to] = _balances[to].add(value);
        emit Transfer(from, to, value);
    }

    /**
        * @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 value The amount that will be created.
        */
    function _mint(address account, uint256 value) internal {
        require(account != address(0));

        _totalSupply = _totalSupply.add(value);
        _balances[account] = _balances[account].add(value);
        emit Transfer(address(0), account, value);
    }

    /**
        * @dev Internal function that burns an amount of the token of a given
        * account.
        * @param account The account whose tokens will be burnt.
        * @param value The amount that will be burnt.
        */
    function _burn(address account, uint256 value) internal {
        require(account != address(0));

        _totalSupply = _totalSupply.sub(value);
        _balances[account] = _balances[account].sub(value);
        emit Transfer(account, address(0), value);
    }

    /**
        * @dev Internal function that burns an amount of the token of a given
        * account, deducting from the sender's allowance for said account. Uses the
        * internal burn function.
        * @param account The account whose tokens will be burnt.
        * @param value The amount that will be burnt.
        */
    function _burnFrom(address account, uint256 value) internal {
        // Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
        // this function needs to emit an event with the updated approval.
        _allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
        value);
        _burn(account, value);
    }
}

// File: contracts/PrivateToken.sol

/**  
* @title Private Token
* @dev This Private token used for early adoption for token holders, and have mechanism for migration to a production token.
* @dev Migration Flow:
*       Step1: call freeze()
*       Step2: Loop mint for all holders on a production token.
*/  


contract PrivateToken is PartialERC20, Ownable {
    
    bool public isFreezed = false;
    
    address[] public holders;
    mapping(address => uint32) indexOfHolders;

    event Freezed(address commander);
    event RecordNewTokenHolder(address holder);
    event RemoveTokenHolder(address holder);
    
    function numberOfTokenHolders() public view returns(uint32) {
        return uint32(holders.length);
    }

    function isTokenHolder(address addr) public view returns(bool) {
        return indexOfHolders[addr] > 0;        
    }

    modifier isNotFreezed() {
        require(!isFreezed);
        _;
    }

    function freeze() public onlyOwner {
        isFreezed = true;

        emit Freezed(msg.sender);
    }

    function _recordNewTokenHolder(address holder) internal {
        // Record new holder
        if (!isTokenHolder(holder)) {
            holders.push(holder);
            indexOfHolders[holder] = uint32(holders.length);
            
            emit RecordNewTokenHolder(holder);
        }
    }

    function _removeTokenHolder(address holder) internal {
        //check if holder exist
        if (isTokenHolder(holder)) {

            // delete holder in holders
            uint32 index = indexOfHolders[holder] - 1;

            if (holders.length > 1 && index != uint32(holders.length - 1)) {
                //swap two elements of the array
                address lastHolder = holders[holders.length - 1];
                holders[holders.length - 1] = holders[index];
                holders[index] = lastHolder;
                
                indexOfHolders[lastHolder] = indexOfHolders[holder];
            }
            holders.length--;
            indexOfHolders[holder] = 0;
            
            emit RemoveTokenHolder(holder);
        }
    }

    /**
    * @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 
        isNotFreezed
        returns (bool) {

        _transfer(msg.sender, to, value);

        // Record new holder
        _recordNewTokenHolder(to);

        return true;
    }

    /**
        * @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 
        isNotFreezed
        returns (bool) {

        _allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
        _transfer(from, to, value);
        
        // Record new holder
        _recordNewTokenHolder(to);
        
        return true;
    }
}

// File: contracts/KTFForTestMigration.sol

/**
    * @title Standard ERC20 token
    *
    * @dev Implementation of the basic standard token.
    * https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
    * Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract KTFForTestMigration is PartialERC20, Ownable {
    // uint256 public totalSupply;  
    string public name;  
    string public symbol;  
    uint32 public decimals; 

    PrivateToken public pktf;

    uint32 public holderCount;

    constructor(PrivateToken _pktf) public {  
        symbol = "KTF";  
        name = "Katinrun Foundation";  
        decimals = 18;  
        _totalSupply = 0;
        
        _balances[msg.sender] = _totalSupply;  

        pktf = _pktf;
    }

    function migrateFromPKTF()
        public
        onlyOwner {

        uint32 numberOfPKTFHolders = pktf.numberOfTokenHolders();
        holderCount = numberOfPKTFHolders;
        
        for(uint256 i = 0; i < numberOfPKTFHolders; i++) {
          address user = pktf.holders(i);
          uint256 balance = pktf.balanceOf(user);

          mint(user, balance);
        }
    }

    /**
        * @dev Function to mint tokens
        * @param to The address that will receive the minted tokens.
        * @param value The amount of tokens to mint.
        * @return A boolean that indicates if the operation was successful.
        */
    function mint(address to,uint256 value) 
        public
        onlyOwner
        returns (bool)
    {
        _mint(to, value);

        return true;
    }
}

// File: contracts/MintableWithVoucher.sol

contract MintableWithVoucher is PrivateToken {
    mapping(uint64 => bool) usedVouchers;
    mapping(bytes32 => uint32) holderRedemptionCount;
    
    event VoucherUsed(
        uint64 voucherID,
        uint64 parityCode, 
        uint256 amount,  
        uint256 expired,  
        address indexed receiver, // use indexed for easy to filter event
        bytes32 socialHash
    );

    function isVoucherUsed(uint64 _voucherID) public view returns (bool) {
        return usedVouchers[_voucherID];
    }
    
    function markVoucherAsUsed(uint64 _voucherID) private {
        usedVouchers[_voucherID] = true;
    }

    function getHolderRedemptionCount(bytes32 socialHash) public view returns(uint32) {
        return holderRedemptionCount[socialHash];
    }

    function isVoucherExpired(uint256 expired) public view returns(bool) {
        return expired < now;
    }

    function expireTomorrow() public view returns (uint256) {
        return now + 1 days;
    }

    function expireNow() public view returns (uint256) {
        return now;
    }

    // Implement voucher system
    // * Amount is in unit of ether *
    function redeemVoucher(
        uint8 _v, 
        bytes32 _r, 
        bytes32 _s,
        uint64 _voucherID,
        uint64 _parityCode,
        uint256 _amount,
        uint256 _expired,
        address _receiver,
        bytes32 _socialHash
    )  
    public 
    isNotFreezed
    {
        require(!isVoucherUsed(_voucherID), "Voucher has already been used.");
        require(!isVoucherExpired(_expired), "Voucher is expired.");

        bytes memory prefix = "\x19Ethereum Signed Message:\n80";
        bytes memory encoded = abi.encodePacked(prefix,_voucherID, _parityCode, _amount, _expired);

        require(ecrecover(keccak256(encoded), _v, _r, _s) == owner());

        // Mint in unit of ether
        _mint(_receiver, _amount * 10 ** 18);

        // Record new holder
        _recordNewTokenHolder(_receiver);

        markVoucherAsUsed(_voucherID);

        holderRedemptionCount[_socialHash]++;

        emit VoucherUsed(_voucherID, _parityCode, _amount,  _expired, _receiver, _socialHash);
    }
    
    /**
        * @dev Function to mint tokens
        * @param to The address that will receive the minted tokens.
        * @param value The amount of tokens to mint.
        * @return A boolean that indicates if the operation was successful.
        */
    function mint(address to,uint256 value) 
        public
        onlyOwner // todo: or onlyMinter
        isNotFreezed
        returns (bool)
    {
        _mint(to, value);

        // Record new holder
        _recordNewTokenHolder(to);

        return true;
    }

    /**
        * @dev Burns a specific amount of tokens. Only owner can burn themself.
        * @param value The amount of token to be burned.
        */
    function burn(uint256 value) 
        public
        onlyOwner
        isNotFreezed {

        _burn(msg.sender, value);
        // _removeTokenHolder(msg.sender);
    }

    /**
        * @dev Burns a specific amount of tokens. Only owner can burn themself.
        * @param value The amount of token to be burned.
        */
    function burn(address account, uint256 value) 
        public
        onlyOwner
        isNotFreezed {

        _burn(account, value);
        // _removeTokenHolder(account);
    }

    /**
        * @dev Internal function that burns an amount of the token of a given
        * account.
        * @param account The account whose tokens will be burnt.
        * @param value The amount that will be burnt.
        */
    function burnFrom(address account, uint256 value) 
        public 
        isNotFreezed 
        {
        require(account != address(0));

        _burnFrom(account, value);

        // if(balanceOf(account) == 0) {
        //     _removeTokenHolder(account);
        // }
    }
}

// File: contracts/PrivateKatinrunFoudation.sol

contract PrivateKatinrunFoudation is MintableWithVoucher {
    // uint256 public totalSupply;  
    string public name;  
    string public symbol;  
    uint32 public decimals; 

    PrivateToken public pktf;
    uint32 public holderCount;

    constructor(PrivateToken _pktf) public {  
        symbol = "PKTF";  
        name = "Private Katinrun Foundation";  
        decimals = 18;  
        _totalSupply = 0;  
        
        _balances[msg.sender] = _totalSupply;  

        if(_pktf != address(0)){
            pktf = _pktf;
            uint32 numberOfPKTFHolders = pktf.numberOfTokenHolders();
            holderCount = numberOfPKTFHolders;
            
            for(uint256 i = 0; i < numberOfPKTFHolders; i++) {
                address user = pktf.holders(i);
                uint256 balance = pktf.balanceOf(user);

                mint(user, balance);
            }
        }
        
        // emit Transfer(0x0, msg.sender, _totalSupply);  
    }
    
}

• No Contract Security Audit Submitted- Submit Audit Here

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ceiver","type":"address"},{"name":"_socialHash","type":"bytes32"}],"name":"redeemVoucher","outputs":[],"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"},{"constant":true,"inputs":[],"name":"expireTomorrow","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"socialHash","type":"bytes32"}],"name":"getHolderRedemptionCount","outputs":[{"name":"","type":"uint32"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_pktf","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"name":"voucherID","type":"uint64"},{"indexed":false,"name":"parityCode","type":"uint64"},{"indexed":false,"name":"amount","type":"uint256"},{"indexed":false,"name":"expired","type":"uint256"},{"indexed":true,"name":"receiver","type":"address"},{"indexed":false,"name":"socialHash","type":"bytes32"}],"name":"VoucherUsed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"commander","type":"address"}],"name":"Freezed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"holder","type":"address"}],"name":"RecordNewTokenHolder","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"holder","type":"address"}],"name":"RemoveTokenHolder","type":"event"},{"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":"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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00000000000000000000000059340948a91a1939a8d2519f75448ec651712d75

-----Decoded View---------------
Arg [0] : _pktf (address): 0x59340948A91A1939a8D2519F75448ec651712D75

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000059340948a91a1939a8d2519f75448ec651712d75

bzzr://28998cb650e19f5992b63bc0eb1dc9d43e75b05a49adf3929449fffba61a218b