Bluesky doesn’t use the ActivityPub protocol, instead they have their own Authenticated Transfer (AT) protocol. That protocol is open source, so theoretically it might be possible to build an ActivityPub to AT protocol bridge. That’s a deep maybe though, there might be wildly different approaches taken in each that would make it hard to build sensible mappings from one to the other.
Bluesky doesn’t use the ActivityPub protocol, instead they have their own Authenticated Transfer (AT) protocol. That protocol is open source, so theoretically it might be possible to build an ActivityPub to AT protocol bridge. That’s a deep maybe though, there might be wildly different approaches taken in each that would make it hard to build sensible mappings from one to the other.