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Ether Value: $0
Transactions: 2 txns
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Contract Creator: 0x33221bd2ec81f39d2c6594344ff2907b4b2c38beat txn 0xf31f076738bcb5456af3fdcc666d976689e2fca1f53e4b217e83de171487fd94
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0x0e115d92fb3be891bdaf236356d0492520a928afd0b0dd19a8a45915d38eaec2129 days 16 hrs ago0x6803ed83aed3b2f3720e7bca7d9da82662fd3591  IN   0xa0df980a587b141bfda8cded13af737d96efb9340.01 Ether0.004434601
0xf31f076738bcb5456af3fdcc666d976689e2fca1f53e4b217e83de171487fd94132 days 18 hrs ago0x33221bd2ec81f39d2c6594344ff2907b4b2c38be  IN    Contract Creation0 Ether0.016966968


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ParentTxHash Block Age From To Value
0x0e115d92fb3be891bdaf236356d0492520a928afd0b0dd19a8a45915d38eaec25238296129 days 16 hrs ago0xa0df980a587b141bfda8cded13af737d96efb9340xda8be90af9ca506fff68b1e03481ed50bed530fe0.01 Ether
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Contract Source Code Verified (Exact match)
Contract Name: PreICO
Compiler Version: v0.4.19+commit.c4cbbb05
Optimization Enabled: Yes
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

pragma solidity 0.4.19;

/**
 * @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 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 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);
}

contract ShortAddressProtection {

    modifier onlyPayloadSize(uint256 numwords) {
        assert(msg.data.length >= numwords * 32 + 4);
        _;
    }
}

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
contract BasicToken is ERC20Basic, ShortAddressProtection {
    using SafeMath for uint256;

    mapping(address => uint256) public 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) onlyPayloadSize(2) 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 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) onlyPayloadSize(3) 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) onlyPayloadSize(2) public returns (bool) {
        //require user to set to zero before resetting to nonzero
        require((_value == 0) || (allowed[msg.sender][_spender] == 0));

        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) onlyPayloadSize(2) 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) onlyPayloadSize(2) 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 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;
    }
}

/**
 * @title Showcoin token
 */
contract Showcoin is Ownable, StandardToken {
    string public constant name = "Showcoin";
    string public constant symbol = "SHC";
    uint8 public constant decimals = 18;

    uint256 public constant INITIAL_SUPPLY = 69000000 * (10 ** uint256(decimals));

    function Showcoin() public {
        totalSupply = INITIAL_SUPPLY;
        balances[msg.sender] = INITIAL_SUPPLY;
        Transfer(address(0), msg.sender, INITIAL_SUPPLY);
    }
}

contract PreICO is Ownable {
    using SafeMath for uint256;

    Showcoin public token;

    uint256 public constant rate = 2000;

    uint256 public endTime;

    address public wallet;

    uint256 public constant tokenSaleLimit = 4000000 * (10 ** 18);

    uint256 public tokenRaised;

    bool public finished;

    /**
     * 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);

    event Finish();

    function PreICO(address _token, uint256 _endTime, address _wallet) public {
        require(_token != address(0));
        require(_wallet != address(0));
        require(_endTime > now);

        token = Showcoin(_token);
        wallet = _wallet;
        endTime = _endTime;
    }

    function setStopDate(uint256 _endTime) onlyOwner public {
        require(_endTime > endTime);
        endTime = _endTime;
    }

    function transferTokens(address _to, uint256 _amount) onlyOwner public {
        require(_to != address(0));

        // update state
        tokenRaised = tokenRaised.add(_amount);
        require(!hasEnded());

        token.transfer(_to, _amount);
    }

    function setWallet(address _wallet) onlyOwner public {
        require(_wallet != address(0));
        wallet = _wallet;
    }

    function claimLeftTokens() onlyOwner public {
        require(hasEnded());
        require(!finished);
        uint256 balance = token.balanceOf(this);
        token.transfer(owner, balance);
        finished = true;
        Finish();
    }

    // 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(validPurchase());

        uint256 weiAmount = msg.value;

        // calculate token amount to be created
        uint256 tokens = weiAmount.mul(rate);

        // update state
        tokenRaised = tokenRaised.add(tokens);
        require(!hasEnded());

        // transfer tokens from this contract to beneficiary
        token.transfer(beneficiary, tokens);
        TokenPurchase(msg.sender, beneficiary, weiAmount, tokens);
        forwardFunds();
    }

    // send ether to the fund collection wallet
    // override to create custom fund forwarding mechanisms
    function forwardFunds() internal {
        wallet.transfer(msg.value);
    }

    // @return true if the transaction can buy tokens
    function validPurchase() internal view returns (bool) {
        bool nonZeroPurchase = msg.value != 0;
        return nonZeroPurchase;
    }

    // @return true if crowdsale event has ended
    function hasEnded() public view returns (bool) {
        return now > endTime || tokenRaised >= tokenSaleLimit;
    }
}

    Contract ABI  
[{"constant":true,"inputs":[],"name":"tokenRaised","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"rate","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"endTime","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_endTime","type":"uint256"}],"name":"setStopDate","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"wallet","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"tokenSaleLimit","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"claimLeftTokens","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_amount","type":"uint256"}],"name":"transferTokens","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"finished","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_wallet","type":"address"}],"name":"setWallet","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"beneficiary","type":"address"}],"name":"buyTokens","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"hasEnded","outputs":[{"name":"","type":"bool"}],"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":"token","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_token","type":"address"},{"name":"_endTime","type":"uint256"},{"name":"_wallet","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"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"},{"anonymous":false,"inputs":[],"name":"Finish","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"}]

  Contract Creation Code Switch To Opcodes View
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

    Constructor Arguments (ABI-encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000cf8dc49d37659414d09907d8336622f2ae287004000000000000000000000000000000000000000000000000000000005ae65c44000000000000000000000000da8be90af9ca506fff68b1e03481ed50bed530fe

-----Decoded View---------------
Found 3 constructor arguments :
Arg [0] : 000000000000000000000000cf8dc49d37659414d09907d8336622f2ae287004
Arg [1] : 000000000000000000000000000000000000000000000000000000005ae65c44
Arg [2] : 000000000000000000000000da8be90af9ca506fff68b1e03481ed50bed530fe


   Swarm Source:
bzzr://62f7508d308572fc489c4ef4b8e89a92a9cd3f9e5afb436397dd7898362e8f76

 

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