Replying to
@azonenberg@ioc.exchange @soatok@furry.engineer @hazelnoot@enby.life
When I was working on #Diskuto (https://github.com/diskuto/) I settled on a UI that performed signing outside of the browser. You can have a little trusted tool that receives the representation of a post and signs it. Paste the signature back in to the browser (which verifies it) and click Post.
It's equivalent to signing a message with PGP/GPG before posting it to a forum.