Could the cypher punks automatic signing also be used as a distributed timestamping service? Where you send a hash/document to it and it timestamps and signs it, to the fact that this hash was in existsence at the specified time. Then it would forward your message on to another such service picked at random until the hash has been stamped the number of times you specified. If you collect a number of timestamps from around the world you could make a case for a document existsing at a certian time. You could also back & forward link in time to other documents that each timestamp services has stamped! Any comments???? T