Big this. 

Nostr address providers, maybe kinda sorta silly. 

Nip-05 domains owned by the actual entity, very valuable. 

nostr:nevent1qqs0r3asjl6rn8jjggchvyjxqmlsuke24d42j00kdul6pyjkfhadqncpzamhxue69uhhyetvv9ujuurjd9kkzmpwdejhgtczyr2f4ypr5gwm5xeusvrv5d5m7vjrmz6yhrctd5gevcrl0vyep75d7qcyqqqqqqgqywcdc 

 The big ones are dumb. Nostr verifies, check, those ones. But smaller domain , "communities" are good too.