Oraclize

// Submitted by EthereumHistory (ethereumhistory.com)
contract Oraclize {
    uint counter = 0;

    event Log1(bytes32 myid, uint timestamp, string datasource, string arg);
    event Log2(bytes32 myid, uint timestamp, string datasource, string arg1, string arg2);

    modifier costs(string datasource) {
        uint price = getPrice(datasource);
        if (msg.value > 0) balances[msg.sender] += msg.value;
        if (balances[msg.sender] >= price) {
            balances[msg.sender] -= price;
            _
        }
    }

    function query(uint timestamp, string datasource, string arg) costs(datasource) returns (bytes32 myid) {
        myid = sha3(now + counter);
        counter++;
        Log1(myid, timestamp, datasource, arg);
        return myid;
    }

    address public cb_address = 0x26588a9301b0428d95e6fc3a5024fce8bec12d51;
    mapping (address => uint) balances;

    function query(uint timestamp, string datasource, string arg1, string arg2) costs(datasource) returns (bytes32 myid) {
        myid = sha3(now + counter);
        counter++;
        Log2(myid, timestamp, datasource, arg1, arg2);
        return myid;
    }

    function getPrice(string datasource) returns (uint) {
        return 10;
    }
}