Start with a settled payment.
A Lightning payment settles. The intended receipt supplies a reference for the review, with the proof format still to be specified.
An open Nostr + Lightning protocol
A review.
A receipt.
A reason
to trust.
One review per settled payment. Receipt-Bound Review connects what was paid for with what is said about it — on open, verifiable rails.
Protocol in development. No production verification yet.
Concept receipt
The payment
is the starting point.
01 / PaymentSettled
02 / ReviewReceipt-bound
03 / VerificationPublic
One payment. One review.
01 / The principle
From payment
to a public proof.
A payment can anchor a review. It cannot prove that an opinion is fair, or that a seller delivered well.
Bind the review to the receipt.
A Nostr review event references that receipt. The protocol aims to accept one review per settled payment, without a central review platform.
Make the binding checkable.
Independent clients should be able to check the binding and reject duplicates. Exact evidence, privacy boundaries, and verification rules are being designed.
02 / Open work
Small surface.
Explicit rules.
RBR is an open protocol effort, not a hosted marketplace. This page describes the direction; it is not an implementable specification.
Specification landing under construction.
Specification — forthcoming
The normative specification, test vectors, and compatibility guidance will be published here when ready. No stable version is available yet.
Event kinds — to be defined
Receipt and review event structures, kind numbers, required tags, and signature requirements are pending. No Nostr event kinds are assigned by this landing page.
Verification rules — design in progress
Settlement evidence, payment-to-review binding, duplicate handling, review updates, and privacy considerations need precise rules. The intended invariant is one review per settled payment; enforcement is not implemented here.
03 / Two reference perspectives
See the idea in context.
Separate reference demos explore the same protocol from a developer’s desk and an independent atelier.