I think your conclusion is pertinent for RSS. nostr's jsonl being a blank sleeve in this niche, and, well... being json just like musicbrainz, i often find myself dreaming of taking a shot at reproducing a decentralized version of it, stored on relays. 😅

We already have a native format for nmbid (nostr musicbrain ID) 😹 We'd probably need moar kinds than tracks and playlists. Like the ones you enumerate. Although if the spec is meant purely for nostr music, many of them become unnecessary. The biggest hurdle is in the nature of nostr leaving ample room for false attributions. But a smart path around that could reveal itself if a few minds bend over it.

Gah, i really don't need another hobby project. Haha 🎷🦒