Pretty sure Obsidian uses a plug in to make it work with nostr and I don't think it been out all that long. To be honest I haven't tried it out yet so can't help you...perhaps its worth using a specialist nostr client for now?   nostr:npub1vwymuey3u7mf860ndrkw3r7dz30s0srg6tqmhtjzg7umtm6rn5eq2qzugd have you you tried anything nostr related on Obsidian?