@af7acbe6 ActivityPub can use a transport protocol other than HTTPS (if you read the spec in a certain way). I wrote this document which describes self-authenticating activities:

https://codeberg.org/fediverse/fep/src/branch/main/fep/ae97/fep-ae97.md

I think it's a good stating point for p2p-ActivityPub. 

 @silverpill This is awesome thank you. It's beyond me but looks promising so maybe there's something in this.

I'll add it to the forum topic. 

 @af7acbe6 By the way, MaidSafe, is it that company from early blockchain days? I thought the project was long dead, but recently it started to appear again in the media. What going on there? Some kind of reboot?