If you print out a piece of paper with the latest block, hold up the NYT's, or use your service, you still only prove that the content was created after a certa

If you print out a piece of paper with the latest block, hold up the NYT's, or use your service, you still only prove that the content was created after a certain date. AFAIK, signing off a timestamp and offering a public key to prove the timestamp was signed then doesn't seem to add value other than unnecessary complexity. I guess if there is a specific time you're trying to prove the event happened after, this system would offer higher fidelity than others, but not all.