Contract Addresses: Coffee Contract Example

Coffee.sol

/**
 *  Coffee
 *
 *  Just a very simple example of deploying a contract at a vanity address
 *  across several chains.
 *
 *  See: https://blog.ricmoo.com/contract-addresses-549074919ec8
 *
 */

pragma solidity ^0.4.20;

contract Coffee {

    address _owner;

    uint48 _mgCaffeine;
    uint48 _count;

    function Coffee() {
        _owner = msg.sender;
    }

    /**
     *   Allow the owner to change the account that controls this contract.
     *
     *   We may wish to use powerful computers that may be public or
     *   semi-public to compute the private key we use to deploy the contract,
     *   to a vanity adddress. So once deployed, we want to move it to a
     *   cold-storage key.
     */
    function setOwner(address owner) {
        require(msg.sender == _owner);
        _owner = owner;
    }

    /**
     *   status()
     *
     *   Returns the number of drinks and amount of caffeine this contract
     *   has been responsible for installing into the developer.
     */
    function status() public constant returns (uint48 count, uint48 mgCaffeine) {
        count = _count;
        mgCaffeine = _mgCaffeine;
    }

    /**
     *  withdraw(amount, count, mgCaffeine)
     *
     *  Withdraws funds from this contract to the owner, indicating how many drinks
     *  and how much caffeine these funds will be used to install into the develoepr.
     */
    function withdraw(uint256 amount, uint8 count, uint16 mgCaffeine) public {
        require(msg.sender == _owner);
        _owner.transfer(amount);
        _count += count;
        _mgCaffeine += mgCaffeine;
    }

    // Let this contract accept payments
    function () public payable { }
}

signed-tx.txt

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