Token

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 contract TokenRecipient    - function receiveApproval(address _fro ...  contract ERC20Basic    - function balanceOf(address who)    - function transfer(address to, uint256 ... 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 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 _sp ...    - function decreaseApproval(address _sp ...  contract ApproveAndCallToken is St ...    - function approveAndCall(address _spen ...    - function transfer(address _to, uint _ ...    - function isContract(address _addr)    - function transferToContract(address _ ...  contract UserRegistryInterface    - function knownAddress(address _who)    - function hasIdentity(address _who)    - function systemAddresses(address _to, ...  contract Ownable    - function Ownable()    - function transferOwnership(address ne ...  contract TokenPolicy is StandardTo ...    - function TokenPolicy(address registry ...    - function transfer(address _to, uint25 ...    - function transferFrom(address _from, ...    - function unfrezee()  contract MintableToken is Standard ...    - function mint(address _to, uint256 _a ...    - function finishMinting()  contract DefaultToken is MintableT ...    - function DefaultToken(string _name, s ...    - function takeAway(address _holder, ad ...  contract AltToken is DefaultToken *    - function AltToken(address _registry)

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/**
 *Submitted for verification at Etherscan.io on 2018-07-20
*/

pragma solidity ^0.4.18;

contract TokenRecipient {
  function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; 
}

/**
 * @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 view returns (uint256);
  function transfer(address to, uint256 value) public returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) {
      return 0;
    }
    uint256 c = a * b;
    assert(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 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 view 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 view 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 view returns (uint256) {
    return allowed[_owner][_spender];
  }

  /**
   * @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 increaseApproval(address _spender, uint _addedValue) public returns (bool) {
    allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
    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 decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
    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;
  }

}

contract ApproveAndCallToken is StandardToken {
  function approveAndCall(address _spender, uint _value, bytes _data) public returns (bool) {
    TokenRecipient spender = TokenRecipient(_spender);
    if (approve(_spender, _value)) {
      spender.receiveApproval(msg.sender, _value, this, _data);
      return true;
    }
    return false;
  }

  // ERC223 Token improvement to send tokens to smart-contracts
  function transfer(address _to, uint _value) public returns (bool success) { 
    //standard function transfer similar to ERC20 transfer with no _data
    //added due to backwards compatibility reasons
    bytes memory empty;
    if (isContract(_to)) {
        return transferToContract(_to, _value, empty);
    }
    else {
        return super.transfer(_to, _value);
    }
  }

  //assemble the given address bytecode. If bytecode exists then the _addr is a contract.
  function isContract(address _addr) private view returns (bool) {
    uint length;
    assembly {
      //retrieve the size of the code on target address, this needs assembly
      length := extcodesize(_addr)
    }
    return (length>0);
  }

  //function that is called when transaction target is a contract
  function transferToContract(address _to, uint _value, bytes _data) private returns (bool success) {
    return approveAndCall(_to, _value, _data);
  }
}

contract UserRegistryInterface {
  event AddAddress(address indexed who);
  event AddIdentity(address indexed who);

  function knownAddress(address _who) public constant returns(bool);
  function hasIdentity(address _who) public constant returns(bool);
  function systemAddresses(address _to, address _from) public constant returns(bool);
}

/**
 * @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() public {
    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) public onlyOwner {
    require(newOwner != address(0));
    OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }

}

contract TokenPolicy is StandardToken, Ownable {
  bool public unfrozen;
  UserRegistryInterface public userRegistry;

  function TokenPolicy(address registry) public {
    require(registry != 0x0);
    userRegistry = UserRegistryInterface(registry);
  }

  event Unfrezee();

  modifier shouldPassPolicy(address _from, address _to) {
    // KYC policy
    require(
      !userRegistry.knownAddress(_from) || 
       userRegistry.hasIdentity(_from) || 
       userRegistry.systemAddresses(_to, _from));

    // Freeze policy
    require(unfrozen || userRegistry.systemAddresses(_to, _from));

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

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

  function unfrezee() onlyOwner public returns (bool) {
    require(!unfrozen);
    unfrozen = true;
  }
}

/**
 * @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 MintableToken is StandardToken, Ownable {
  event Mint(address indexed to, uint256 amount);
  event MintFinished();

  bool public mintingFinished = false;


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

  /**
   * @dev Function to mint tokens
   * @param _to The address that will receive 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 canMint public returns (bool) {
    totalSupply = totalSupply.add(_amount);
    balances[_to] = balances[_to].add(_amount);
    Mint(_to, _amount);
    Transfer(address(0), _to, _amount);
    return true;
  }

  /**
   * @dev Function to stop minting new tokens.
   * @return True if the operation was successful.
   */
  function finishMinting() onlyOwner canMint public returns (bool) {
    mintingFinished = true;
    MintFinished();
    return true;
  }
}

contract DefaultToken is MintableToken, TokenPolicy, ApproveAndCallToken {
  using SafeMath for uint;

  string public name;
  string public ticker;
  uint public decimals;
  
  function DefaultToken(string _name, string _ticker, uint _decimals, address _registry) 
    ApproveAndCallToken()
    MintableToken()
    TokenPolicy(_registry) public {
    name = _name;
    ticker = _ticker;
    decimals = _decimals;
  }

  function takeAway(address _holder, address _to) onlyOwner public returns (bool) {
    require(userRegistry.knownAddress(_holder) && !userRegistry.hasIdentity(_holder));

    uint allBalance = balances[_holder];
    balances[_to] = balances[_to].add(allBalance);
    balances[_holder] = 0;
    
    Transfer(_holder, _to, allBalance);
  }
}

contract AltToken is DefaultToken {
  function AltToken(address _registry) DefaultToken("AltEstate token", "ALT", 18, _registry) public {
  }
}

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000000000000000000000000b0f109ac40273682b2e7f0c3fed4d7634dbcf137

-----Decoded View---------------
Arg [0] : _registry (address): 0xB0f109aC40273682B2E7f0C3Fed4D7634DbcF137

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000b0f109ac40273682b2e7f0c3fed4d7634dbcf137

bzzr://3dca17aea96e042867a1eb06a00f46077c25e65100d1135a61bbcafe3527689f