₿Muse is a Nostr protocol standard (proposal NP.BM that enables artists to sell music directly to fans with no middlemen.
It uses a non-replaceable Nostr event (kind: 3088) to act as a decentralized album page. This event contains the song's metadata, a link to a decentralized file (e.g., on IPFS), and payment information.
Crucially, it features an enforceable paywall. Instead of a public link, paid tracks require a fan to send a payment request event, to which the artist's service replies with a cryptographically signed, single-use access grant. This unlocks the full track for that specific user.
In essence, ₿Muse gives artists true ownership of their distribution and revenue, using Nostr for the marketplace and IPFS for permanent, censorship-resistant file storage.