@shreyan@twtxt.net What do you mean when you say federation protocol?
Either use webfinger for identity like mastodon etc. or use ATproto from Bluesky (or both?)
We can use webmentions or create our own twt-mentions for notifying someones feed (WIP code at: https://github.com/sorenpeter/timeline/tree/webmention/views)
I’m not sure we need much else. I would not even bother with encryption since other platforms does that better, and for me twtxt/yarn/timeline is for making things public