Right now Lemmy federate says piefed.social isn't registered. I went to their matrix and asked the admin about adding lemmy-federate. They said they had attempted to do so but the Lemmy federate bot didn't recognize their account as an admin account.
With the end of lemm.ee and the piefed.social migration tools we are going to see a lot of communities pop up on piefed.
Would it be possible to either add piefed support or manually flag the piefed social admin account as validated?
It says it has 95% Lemmy compatible API here. I can try to add it with some minor modifications.
Any group federation compatible server should be able to use Lemmy Federate for federating their communities (not the other way around). The only problem is, there is no standard ActivityPub way to determine if a user is an admin and I haven’t worked this out yet.