An ActivityPub group actor defining its moderators is a specific implementation of the AP protocol. You can find the spec details lemmy uses here. An Mbin contributor recently implemented this to line up with Lemmy, but whether other fediverse software do or will is up to them, as it's more of a community proposal than an official implementation of the spec. So when you see no moderators from other software, they likely just do not implement the linked FEP
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If I understand correctly, if Peertube were to comply with this spec, then the owner of that peertube channel would show up as the moderator in the Lemmy community?
They could, yes. Afaik no extra work was needed on lemmy's side once Mbin changed to report moderators in the same manner (aside from some kind of activity which triggered a refresh of the data)
However, looking at peertube, it looks like they already are using the attributedTo
field for the group with a person, which is different from the FEP. For the channel you link in the OP specifically:
"attributedTo": [
{
"type": "Person",
"id": "https://tilvids.com/accounts/thelinuxexperiment"
}
]
It's possible PeerTube could change to make a /moderators
endpoint and respond with that as the FEP suggests, or Lemmy and other software to change to accept this array of actor types instead. I'm not sure who decides these things or if there is an evangelist for FEPs, It's possible this was already discussed on the peertube github as well, I didn't look through all the past issues as there are quite a lot
it would be a local lemmy account, should it have one. the moderation is local.
If they moderate from Peertube's side, does that not federate then? What I'm wondering is why the Peertube account isn't listed under the "mods:" section.
as far as i know, most (if not all) moderation actions are not federated.
that community is local to Lemmmy, despite the content coming from somewhere else. that lemmy community would be moderated by a lemmy account.
and thats kind of the point. instances get to self-content-control. that said, remote management of your post is a thing.. so you can delete it, edit it, etc.
content creators.. 'posters', would not automatically be moderators of a community because they posted some content into it.
Lemmy to Lemmy moderator actions all federate, however it gets flaky with Lemmy to Kbin/Lemmy to Peertube/Lemmy to Mastodon (and vice versa) where each different activitypub implementation have their own unique moderation commands AFAIK.
Reports on Lemmy were not federated the last time it was brought up in a discussion, no idea if that has changed now
Everything else mentioned is 100% correct though, lemmy instances can also moderate communities that are federated to their instance, albeit only their instance users will see those changes.