Is there a way to use a computer to hide information until a specific date? Perhaps some website that will do that (you upload a file and you can't download it before some time determined by the server clock).
Name:
Anonymous2011-07-29 21:27
Centralized way: encrypt the file, place the key with a trusted entity that promises to release the key on a specific date. Since this isn't cool enough, use Shamir's Secret Sharing to split the key between multiple entities, to ensure their honesty. Congratulation, you wannabe-cypherpunk, you. insurance.aes256, anyone?
Decentralized way: you need a distributed trusted timestamp server. Though one, perhaps find a way to piggyback on bitcoin's blockchain?