Early Temple
http://earlytemple.com is an
Oracle for resolving contracts based on real-world conditions. Inspired by Mike Hearn's theoretical discussion of proposed servers that stand as neutral judges for contracts, Early Temple uses m-of-n addresses, it supports a basic protocol of conditional coin transfer when scraping a web page reveals a given phrase.
A downloadable command line client is available for handling m-of-n addresses, and handling the sending side of the protocol, by interfacing with a locally running Bitcoind.
I've been around the NYC Bitcoin scene since last summer, and I gave a demo at the BitDevs at xCubicle a few months ago, before the client was ready. Without the client, users have to interact with the Bitcoind command line itself, which is onerous. The client and protocol rely on standard transactions.
I'm seeing much of discussion of Oracles lately, and I think we are reaching an inflection point in exploring new business models and protocols.
Next steps will be to implement contract lifespan, so that if the condition is not met by a certain time, the money is refunded to the sender, instead of remaining in the contract forever.