Show HN: The last person to use this button gets $200+ USD, via Smart Contracts(thecryptobutton.com)

    // The winner is responsible for withdrawing the funds
    // after the button expires
    function Win() public {
        require(msg.sender == winner);
        require(now > deadline);
        reward = 0;
        winner.transfer(reward);
    }

    function withdrawTips() public {
        // The owner can only withdraw the tips
        tips = 0;
        owner.transfer(tips);
    }

        reward += msg.value * 8 / 10;
        // Take 20% tip for server costs.
        tips += msg.value * 2 / 10;