https://audio.iris.to/#/npub1af8708jh7gynpxlla5he9u9etdva85wtf6yfy3zrnzhw5lhrzlks685f8p/metal-catalog

Spotify clone on nostr / blossom / hashtree. Data is loaded from peers over webrtc even if you disable the blossom servers.

Hashtree is a nostr native "IPFS lite", basically just blossom + directories and file chunking. Everything is content hash key encrypted by default, which is nice for blossom server admins. More: https://hashtree.cc/#/dev

Btree indexes on hashtree enable large, searchable decentralized databases that can be used for all kinds of "platform" applications.

Hashtree indexes can be queried a bit like nostr relays, but they're not tied to any IP address, domain name or host. You can sync them over any transport and search offline.

Content-addressed indexes are transparent: you can verify that you see the same search results as others and aren't shadowbanned.

You can easily fork the large indexes (such as audio.iris.to catalogs) and add your own results into them, even in the browser.