I don't see this as a real issue because of course this protocol can only prove that a certain website existed as represented at that time. It's impossible to p

I don't see this as a real issue because of course this protocol can only prove that a certain website existed as represented at that time. It's impossible to prove something didn't exist anyways. Can you prove I'm not wearing 8 different hats stacked on top of each other right now? No, impossible without a video recording and method of biometric verification both time-stamped showing I wasn't wearing the hats. This only works because there is arguably only one me at a time.