Contract

Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

•  contract ERC20Basic
•    - function totalSupply()
•    - function balanceOf(address who)
•    - function transfer(address to, uint256 ...
•  contract ERC20 is ERC20Basic
•    - function allowance(address owner, add ...
•    - function transferFrom(address from, a ...
•    - function approve(address spender, uin ...
• 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 Crowdsale *
•    - function Crowdsale(ERC20 _token, addr ...
•    - function ()
•    - function buyTokens()
•    - function lockRemainingTokens()
•    - function setRate(uint256 _newRate)
•    - function setFundWallet(address _fundW ...
•    - function setCrowdsaleOpen(bool _crowd ...
•    - function getEtherRaised()
•    - function capReached()

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2018-07-17
*/

pragma solidity ^0.4.21;


/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
    function totalSupply() public view returns (uint256);
    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 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 SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {

  /**
  * @dev Multiplies two numbers, throws on overflow.
  */
    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;
    }

  /**
  * @dev Integer division of two numbers, truncating the quotient.
  */
    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;
    }

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

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


/**
 * @title Crowdsale
 * @dev Crowdsale is a base contract for managing a token crowdsale,
 * allowing investors to purchase tokens with ether. This contract implements
 * such functionality in its most fundamental form and can be extended to provide additional
 * functionality and/or custom behavior.
 * The external interface represents the basic interface for purchasing tokens, and conform
 * the base architecture for crowdsales. They are *not* intended to be modified / overriden.
 * The internal interface conforms the extensible and modifiable surface of crowdsales. Override
 * the methods to add functionality. Consider using 'super' where appropiate to concatenate
 * behavior.
 */
contract Crowdsale {
    using SafeMath for uint256;

    // The token being sold
    ERC20 public token;

    // Address where funds are collected
    address public fundWallet;
    
    // the admin of the crowdsale
    address public admin;

    // Exchange rate:  1 eth = 10,000 TAUR
    uint256 public rate = 10000;

    // Amount of wei raised
    uint256 public amountRaised;

    // Crowdsale Status
    bool public crowdsaleOpen;

    // Crowdsale Cap
    uint256 public cap;

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

  /**
   * @param _token - Address of the token being sold
   * @param _fundWallet - THe wallet where ether will be collected
   */
    function Crowdsale(ERC20 _token, address _fundWallet) public {
        require(_token != address(0));
        require(_fundWallet != address(0));

        fundWallet = _fundWallet;
        admin = msg.sender;
        token = _token;
        crowdsaleOpen = true;
        cap = 20000 * 1 ether;
    }

  // -----------------------------------------
  // Crowdsale external interface
  // -----------------------------------------

  /**
   * @dev fallback function ***DO NOT OVERRIDE***
   */
    function () external payable {
        buyTokens();
    }

  /**
   * @dev low level token purchase ***DO NOT OVERRIDE***
   */
    function buyTokens() public payable {

        // do necessary checks
        require(crowdsaleOpen);
        require(msg.sender != address(0));
        require(msg.value != 0);
        require(amountRaised.add(msg.value) <= cap);
        
        // calculate token amount to be created
        uint256 tokens = (msg.value).mul(rate);

        // update state
        amountRaised = amountRaised.add(msg.value);

        // transfer tokens to buyer
        token.transfer(msg.sender, tokens);

        // transfer eth to fund wallet
        fundWallet.transfer(msg.value);

        emit TokenPurchase (msg.sender, msg.value, tokens);
    }

    function lockRemainingTokens() onlyAdmin public {
        token.transfer(admin, token.balanceOf(address(this)));
    }

    function setRate(uint256 _newRate) onlyAdmin public {
        rate = _newRate;    
    }
    
    function setFundWallet(address _fundWallet) onlyAdmin public {
        require(_fundWallet != address(0));
        fundWallet = _fundWallet; 
    }

    function setCrowdsaleOpen(bool _crowdsaleOpen) onlyAdmin public {
        crowdsaleOpen = _crowdsaleOpen;
    }

    function getEtherRaised() view public returns (uint256){
        return amountRaised / 1 ether;
    }

    function capReached() public view returns (bool) {
        return amountRaised >= cap;
    }

    modifier onlyAdmin {
        require(msg.sender == admin);
        _;
    }  

}

• No Contract Security Audit Submitted- Submit Audit Here

[{"constant":false,"inputs":[],"name":"lockRemainingTokens","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"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":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"cap","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"capReached","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_fundWallet","type":"address"}],"name":"setFundWallet","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"fundWallet","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"amountRaised","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"crowdsaleOpen","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"buyTokens","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"getEtherRaised","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"admin","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"token","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_crowdsaleOpen","type":"bool"}],"name":"setCrowdsaleOpen","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"_token","type":"address"},{"name":"_fundWallet","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"purchaser","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":false,"name":"amount","type":"uint256"}],"name":"TokenPurchase","type":"event"}]

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

0000000000000000000000005912b2524c40986156248a6108e8d302e9df051d0000000000000000000000005a94aa2eb905230b486c7e3f1ce91680fce9a91f

-----Decoded View---------------
Arg [0] : _token (address): 0x5912B2524C40986156248A6108e8d302E9Df051d
Arg [1] : _fundWallet (address): 0x5A94aa2EB905230b486C7E3F1Ce91680fcE9a91f

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000005912b2524c40986156248a6108e8d302e9df051d
Arg [1] : 0000000000000000000000005a94aa2eb905230b486c7e3f1ce91680fce9a91f

bzzr://c479965a65d6a50854cd761a7fe8753bd318c160d06e043fc89983ad54f2717f