Saved it for later. Now that I read it, it doesn't really change anything (but it's a good confirmation it's working well).

The usecase is still unknown (to me). I kinda like "arbitrary data on blockchain" as some kind of proof or a certificate. But there is maybe some other usecase for uncensorable content with timestamp that doesn't make (financial) sense without extreme compression. And I don't mean collectables :).

Yes I know opentimestamps exist.

Again: this is just thinking out loud in case someone else might get inspired.