...and yes, putting tweets on a block chain/git style data structure is a very good idea. That's how you can easily find out how much you've actually seen, and what you may have missed or been censored from seeing.
This is how Bluesky operates.
Please Login to reply.
Scuttlebutt does this too.
Bluesky is not only completely centralized in a single server today, it is also designed to never possibly become less centralized.