English
USD
Popular
Other
Handelion
Handelion
ICO
Site unavailable
Handelion is the future of international trade
Category: Banking, Investment, Blockchain
Founded: Dec 14, 2017
Country: Latvia
Sadly, you’ve exceeded the limit of adding to favorite.
The limit possible is 5
Increase the limit
Go to website MVP is ready

Information about ICO

Platform Ethereum
Accepted
Start date Oct 12, 2017
End date Oct 24, 2017
Soft cap
Hard cap
Raised
Minimal amount 0 HION
Token HION
Periods
12.10.2017 24.10.2017
100.00%
Handelion (HION)
Handelion (HION)
Token
Ethereum
Utility
ERC-20
Platform: Ethereum
Not trade
Main - token distribution
Main - use of funds
Smart contract - Handelion
pragma solidity ^0.4.15;


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



/**
 * @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;
  }

}

/**
 * @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 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 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 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 Burnable Token
 * @dev Token that can be irreversibly burned (destroyed).
 */
contract BurnableToken is StandardToken {

    address public constant BURN_ADDRESS = 0;

    event Burn(address indexed burner, uint256 value);

	
	function burnTokensInternal(address _address, uint256 _value) internal {
        require(_value > 0);
        require(_value <= balances[_address]);
        // no need to require value <= totalSupply, since that would imply the
        // sender's balance is greater than the totalSupply, which *should* be an assertion failure

        address burner = _address;
        balances[burner] = balances[burner].sub(_value);
        totalSupply = totalSupply.sub(_value);
        Burn(burner, _value);
		Transfer(burner, BURN_ADDRESS, _value);
		
	}
		
}

/**
 * @title Handelion Token
 * @dev Main token used for Handelion crowdsale
 */
 contract HIONToken is BurnableToken, Ownable
 {
	
	/** Handelion token name official name. */
	string public constant name = "HION Token by Handelion"; 
	 
	 /** Handelion token official symbol.*/
	string public constant symbol = "HION"; 

	/** Number of decimal units for Handelion token */
	uint256 public constant decimals = 18;

	/* Preissued token amount */
	uint256 public constant PREISSUED_AMOUNT = 29750000 * 1 ether;
			
	/** 
	 * Indicates wheather token transfer is allowed. Token transfer is allowed after crowdsale is over. 
	 * Before crowdsale is over only token owner is allowed to transfer tokens to investors.
	 */
	bool public transferAllowed = false;
			
	/** Raises when initial amount of tokens is preissued */
	event LogTokenPreissued(address ownereAddress, uint256 amount);
	
	
	modifier canTransfer(address sender)
	{
		require(transferAllowed || sender == owner);
		
		_;
	}
	
	/**
	 * Creates and initializes Handelion token
	 */
	function HIONToken()
	{
		// Address of token creator. The creator of this token is major holder of all preissued tokens before crowdsale starts
		owner = msg.sender;
	 
		// Send all pre-created tokens to token creator address
		totalSupply = totalSupply.add(PREISSUED_AMOUNT);
		balances[owner] = balances[owner].add(PREISSUED_AMOUNT);
		
		LogTokenPreissued(owner, PREISSUED_AMOUNT);
	}
	
	/**
	 * Returns Token creator address
	 */
	function getCreatorAddress() public constant returns(address creatorAddress)
	{
		return owner;
	}
	
	/**
	 * Gets total supply of Handelion token
	 */
	function getTotalSupply() public constant returns(uint256)
	{
		return totalSupply;
	}
	
	/**
	 * Gets number of remaining tokens
	 */
	function getRemainingTokens() public constant returns(uint256)
	{
		return balanceOf(owner);
	}	
	
	/**
	 * Allows token transfer. Should be called after crowdsale is over
	 */
	function allowTransfer() onlyOwner public
	{
		transferAllowed = true;
	}
	
	
	/**
	 * Overrides transfer function by adding check whether transfer is allwed
	 */
	function transfer(address _to, uint256 _value) canTransfer(msg.sender) public returns (bool)	
	{
		super.transfer(_to, _value);
	}

	/**
	 * Override transferFrom function and adds a check whether transfer is allwed
	 */
	function transferFrom(address _from, address _to, uint256 _value) canTransfer(_from) public returns (bool) {	
		super.transferFrom(_from, _to, _value);
	}
	
	/**
     * @dev Burns a specific amount of tokens.
     * @param _value The amount of token to be burned.
     */
    function burn(uint256 _value) public {
		burnTokensInternal(msg.sender, _value);
    }

    /**
     * @dev Burns a specific amount of tokens for specific address. Can be called only by token owner.
	 * @param _address 
     * @param _value The amount of token to be burned.
     */
    function burn(address _address, uint256 _value) public onlyOwner {
		burnTokensInternal(_address, _value);
    }
}
Bitcoin
(-1.46%)
Ethereum
(-1.37%)
Ripple
(-1.84%)
Litecoin
(-1.66%)
EOS
(-0.27%)
Bitcoin Cash
(-4.76%)
Binance Coin
(-2.45%)
Stellar
(-3.61%)
Tether
(0.00%)
Cardano
(-0.03%)
Tronix
(-3.27%)
Bitcoin SV
(-1.03%)
Monero
(-3.43%)
IOTA
(-3.50%)
Dash
(-3.27%)
NEO
(-1.82%)
Ethereum Classic
(-1.95%)
Karatgold coin
(-28.27%)
NEM
(-2.79%)
OKB
(-1.00%)
Support Center
Tracking of cryptocurrency markets has become even more convenient with our application.
Neironix Mobile App
Download for FREE
Download App
Create account
Sign in
Contact technical support
If you have any problems with the system, please describe the problem in the form below, or send your question to: support@neironix.io