Yeah it's odd to see a bunch of people proposing ideas for cryptographic timestamps (on the blockchain!) when anyone who has worked with digital signatures shou

Yeah it's odd to see a bunch of people proposing ideas for cryptographic timestamps (on the blockchain!) when anyone who has worked with digital signatures should know about RFC3161. Of course for verification it's important that the timestamp countersignature comes from a reputable CA and not some random server you set up.