this post was submitted on 21 Jul 2023
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That's an assumption that lemmy will quit federating with a server that does not match.
And what signature are we talking about anyway? Is not certificates...
Activitypub signatures that each user and group sends out their messages with.
It's not an assumption, it's how activitypub works.
Can you show me documentation that shows communities or servers are signed?
https://www.w3.org/wiki/SocialCG/ActivityPub/Authentication_Authorization