RFC: Payment URI scheme for Neptune

LostInTranslation · August 3, 2026, 9:29pm

Edit: RFC moved to GitHub as NIP:

github.com/Neptune-Crypto/nips

NIP-002: Payment URI Scheme (#2)

master ← codewordneptune:cwn/payment-uri

opened 07:04PM - 04 Aug 26 UTC

codewordneptune

+113 -0

Adds NIP-002, a payment URI scheme for payment links, QR codes, and deep-linking…, following up on the RFC discussion in Neptune-Crypto/neptune-core#959. Format follows NIP-001 (#1). Notes for reviewers: - The scheme is `neptunecash:` rather than the `neptune:` originally proposed in the RFC. Open question 2 in the document explains the change: the name "Neptune" is now contested by a fork, and OS-level URI handler registration is a single global namespace. - The three open questions each carry a proposal and are the main items feedback is sought on. - The test vectors are marked provisional: they are hand-derived and will be re-verified once the reference parser exists.