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Contract Overview
Balance: 0 Ether
Ether Value: $0
Transactions: 1 txn
Misc:
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Contract Creator: 0x22610b478e2087c18c0bbf173b7b6f4f137f2b72at txn 0xf6f49e6b6fca225cf4b7a6245023334c4c121de1dfff374787ebed08ab9ff83e
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Warning: The Compiled Contract might be susceptible to ExpExponentCleanup (medium/high-severity), EventStructWrongData (very low-severity) SolidityCompiler Bugs.

Contract Source Code Verified (Exact Match)
Contract Name: WHOISCrowdsale
Compiler Text: v0.4.24+commit.e67f0147
Optimization Enabled: Yes
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

/**
 * WHOIS Token Donations contract
 * Version 1.00
 * TrueValue Holdings
 * www.ethWhois.com
 * Interwave Global
 * www.iw-global.com
 **/
 
 
pragma solidity ^0.4.18;

/**
 * @title Crowdsale
 * @dev Crowdsale is a base contract for managing a token crowdsale.
*  Funds collected are forwarded to a wallet
 * as they arrive.
 */


contract WHOISCrowdsale {
  //using SafeMath for uint256;

  // The token being sold
  WHOIS public token;

  // address where funds are collected
  address public wallet;

  // how many token units a buyer gets per wei
  uint256 public rate;

  // amount of raised money in wei
  uint256 public weiRaised;

  // token's account
  address tokenStockAddress;

  /**
   * event for token purchase logging
   * @param purchaser who paid for the tokens
   * @param beneficiary who got the tokens
   * @param value weis paid for purchase
   * @param amount amount of tokens purchased
   */
  event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount);

/**
 function Crowdsale( address ethDestination, address tokenSource, address tokenContract  ) public {
        wallet =   ethDestination;
        tokenStockAddress = tokenSource;
        rate = 100 ;
        token = WHOIS(tokenContract);
  }
**/


 function Crowdsale( ) public {
        wallet =   0x22610b478e2087c18C0bbf173b7B6f4F137F2B72;
        tokenStockAddress = wallet;
        rate = 100 ;
        token = WHOIS(0xbd0706f616b8d465d87583b727df8478ed1496fd);
  }


  // fallback function can be used to buy tokens
  function () external payable {
    buyTokens(msg.sender);
  }

  // low level token purchase function
  function buyTokens(address beneficiary) public payable {
    require(beneficiary != address(0));
    require(msg.value != 0);

    uint256 weiAmount = msg.value;

    // calculate token amount to be created
    uint256 tokens = weiAmount * rate;

    // update state
    weiRaised = weiRaised + weiAmount;

    // debug
    TokenPurchase(msg.sender, beneficiary, weiAmount, tokens);
    //token.transfer(msg.sender, tokens);
    token.transferFrom(tokenStockAddress, msg.sender, tokens); 

    forwardFunds();
  }

  // send ether to the fund collection wallet
  // override to create custom fund forwarding mechanisms
  function forwardFunds() internal {
    wallet.transfer(msg.value);
  }
 
  function setRate(uint newRate) external payable {
	require(msg.sender == wallet);
	rate = newRate;
	}
}


 /**
 * WHOIS Token
 * Version 1.00
 * TrueValue Holdings
 * Interwave Global
 * www.iw-global.com
 * www.ethWhois.com
 **/
 
 
pragma solidity ^0.4.18;


contract owned {
    address public owner;

    function owned() public {
        owner = msg.sender;
    }

    modifier onlyOwner {
        require(msg.sender == owner);
        _;
    }

    function transferOwnership(address newOwner) onlyOwner public {
        owner = newOwner;
    }
}

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

contract TokenERC20 {
    // Public variables of the token
    string public name  ;
    string public symbol  ;
    uint8 public decimals = 18;
    // 18 decimals is the strongly suggested default, avoid changing it
    uint256 public totalSupply ;

    // This creates an array with all balances
    mapping (address => uint256) public balanceOf;
    mapping (address => mapping (address => uint256)) public allowance;

    // This generates a public event on the blockchain that will notify clients
    event Transfer(address indexed from, address indexed to, uint256 value);

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

    /**
     * Constrctor function
     *
     * Initializes contract with initial supply tokens to the creator of the contract
     */
    function TokenERC20(
        uint256 initialSupply,
        string tokenName,
        string tokenSymbol
    ) public {
        totalSupply = initialSupply * 10 ** uint256(decimals);  // Update total supply with the decimal amount
        balanceOf[msg.sender] = totalSupply;                // Give the creator all initial tokens
        name = tokenName;                                   // Set the name for display purposes
        symbol = tokenSymbol;                               // Set the symbol for display purposes
    }

    /**
     * Internal transfer, only can be called by this contract
     */
    function _transfer(address _from, address _to, uint _value) internal {
        // Prevent transfer to 0x0 address. Use burn() instead
        require(_to != 0x0);
        // Check if the sender has enough
        require(balanceOf[_from] >= _value);
        // Check for overflows
        require(balanceOf[_to] + _value > balanceOf[_to]);
        // Save this for an assertion in the future
        uint previousBalances = balanceOf[_from] + balanceOf[_to];
        // Subtract from the sender
        balanceOf[_from] -= _value;
        // Add the same to the recipient
        balanceOf[_to] += _value;
        Transfer(_from, _to, _value);
        // Asserts are used to use static analysis to find bugs in your code. They should never fail
        assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
    }

    /**
     * Transfer tokens
     *
     * Send `_value` tokens to `_to` from your account
     *
     * @param _to The address of the recipient
     * @param _value the amount to send
     */
    function transfer(address _to, uint256 _value) public {
        _transfer(msg.sender, _to, _value);
    }

    /**
     * Transfer tokens from other address
     *
     * Send `_value` tokens to `_to` in behalf of `_from`
     *
     * @param _from The address of the sender
     * @param _to The address of the recipient
     * @param _value the amount to send
     */
    function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
        require(_value <= allowance[_from][msg.sender]);     // Check allowance
        allowance[_from][msg.sender] -= _value;
        _transfer(_from, _to, _value);
        return true;
    }

    /**
     * Set allowance for other address
     *
     * Allows `_spender` to spend no more than `_value` tokens in your behalf
     *
     * @param _spender The address authorized to spend
     * @param _value the max amount they can spend
     */
    function approve(address _spender, uint256 _value) public
        returns (bool success) {
        allowance[msg.sender][_spender] = _value;
        return true;
    }

    /**
     * Set allowance for other address and notify
     *
     * Allows `_spender` to spend no more than `_value` tokens in your behalf, and then ping the contract about it
     *
     * @param _spender The address authorized to spend
     * @param _value the max amount they can spend
     * @param _extraData some extra information to send to the approved contract
     */
    function approveAndCall(address _spender, uint256 _value, bytes _extraData)
        public
        returns (bool success) {
        tokenRecipient spender = tokenRecipient(_spender);
        if (approve(_spender, _value)) {
            spender.receiveApproval(msg.sender, _value, this, _extraData);
            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(balanceOf[msg.sender] >= _value);   // Check if the sender has enough
        balanceOf[msg.sender] -= _value;            // Subtract from the sender
        totalSupply -= _value;                      // Updates totalSupply
        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(balanceOf[_from] >= _value);                // Check if the targeted balance is enough
        require(_value <= allowance[_from][msg.sender]);    // Check allowance
        balanceOf[_from] -= _value;                         // Subtract from the targeted balance
        allowance[_from][msg.sender] -= _value;             // Subtract from the sender's allowance
        totalSupply -= _value;                              // Update totalSupply
        Burn(_from, _value);
        return true;
    }
}

/******************************************/
/*       ADVANCED TOKEN STARTS HERE       */
/******************************************/

contract WHOIS is owned, TokenERC20 {

    uint256 public sellPrice;
    uint256 public buyPrice;

    mapping (address => bool) public frozenAccount;

    /* This generates a public event on the blockchain that will notify clients */
    event FrozenFunds(address target, bool frozen);

    /* Initializes contract with initial supply tokens to the creator of the contract */
    function WHOIS(
    ) 

    TokenERC20(100000000, "WHOIS", "ethWHOIS") public {}
    
    /* Internal transfer, only can be called by this contract */
    function _transfer(address _from, address _to, uint _value) internal {
        require (_to != 0x0);                               // Prevent transfer to 0x0 address. Use burn() instead
        require (balanceOf[_from] > _value);                // Check if the sender has enough
        require (balanceOf[_to] + _value > balanceOf[_to]); // Check for overflows
        require(!frozenAccount[_from]);                     // Check if sender is frozen
        require(!frozenAccount[_to]);                       // Check if recipient is frozen
        balanceOf[_from] -= _value;                         // Subtract from the sender
        balanceOf[_to] += _value;                           // Add the same to the recipient
        Transfer(_from, _to, _value);
    }

    /// @notice Create `mintedAmount` tokens and send it to `target`
    /// @param target Address to receive the tokens
    /// @param mintedAmount the amount of tokens it will receive
    function mintToken(address target, uint256 mintedAmount) onlyOwner public {
        balanceOf[target] += mintedAmount;
        totalSupply += mintedAmount;
        Transfer(0, this, mintedAmount);
        Transfer(this, target, mintedAmount);
    }

    /// @notice `freeze? Prevent | Allow` `target` from sending & receiving tokens
    /// @param target Address to be frozen
    /// @param freeze either to freeze it or not
    function freezeAccount(address target, bool freeze) onlyOwner public {
        frozenAccount[target] = freeze;
        FrozenFunds(target, freeze);
    }

    /// @notice Allow users to buy tokens for `newBuyPrice` eth and sell tokens for `newSellPrice` eth
    /// @param newSellPrice Price the users can sell to the contract
    /// @param newBuyPrice Price users can buy from the contract
    function setPrices(uint256 newSellPrice, uint256 newBuyPrice) onlyOwner public {
        sellPrice = newSellPrice;
        buyPrice = newBuyPrice;
    }

    /// @notice Buy tokens from contract by sending ether
    function buy() payable public {
        uint amount = msg.value / buyPrice;               // calculates the amount
        _transfer(this, msg.sender, amount);              // makes the transfers
    }

    /// @notice Sell `amount` tokens to contract
    /// @param amount amount of tokens to be sold
    function sell(uint256 amount) public {
        require(this.balance >= amount * sellPrice);      // checks if the contract has enough ether to buy
        _transfer(msg.sender, this, amount);              // makes the transfers
        msg.sender.transfer(amount * sellPrice);          // sends ether to the seller. It's important to do this last to avoid recursion attacks
    }
}

    Contract ABI  
[{"constant":true,"inputs":[],"name":"rate","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newRate","type":"uint256"}],"name":"setRate","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"weiRaised","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"wallet","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"beneficiary","type":"address"}],"name":"buyTokens","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[],"name":"Crowdsale","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"token","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"purchaser","type":"address"},{"indexed":true,"name":"beneficiary","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":false,"name":"amount","type":"uint256"}],"name":"TokenPurchase","type":"event"}]

  Contract Creation Code Switch To Opcodes View
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

   Swarm Source:
bzzr://856f162d1e7684d5b2c87073b9703541bc65fcb81e3f1c3ac5e208ef021d6dea

 

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