I-D Action: draft-martinalli-open-purchase-receipts-00.txt

Internet-Draft draft-martinalli-open-purchase-receipts-00.txt is now
available.

   Title:   attest: Portable, Offline-Verifiable Digital Purchase Receipts
   Author:  Samuele Martinalli
   Name:    draft-martinalli-open-purchase-receipts-00.txt
   Pages:   31
   Dates:   2026-08-06

Abstract:

   This document specifies attest, a signed digital purchase-receipt
   envelope that a buyer holds and that any party can verify offline,
   without contacting the issuer or any third-party service.  It defines
   the receipt envelope and payload format, a restricted JSON
   canonicalization profile ("attest-JCS", built on RFC 8785), a pinned
   Ed25519 signature ruleset, an optional hybrid Ed25519+ML-DSA-65 post-
   quantum-resistant signature profile, issuer key and artifact
   manifests with rotation and compromise handling, a layered
   verification algorithm, and revocation-record semantics.  This
   document is a snapshot profile: it distills, and never supersedes,
   the living attest specification maintained in the attest source
   repository.  It normatively specifies exactly the core receipt format
   and the hybrid signature profile; the living specification's
   transparency-log, anchoring, and issuer-mediated transfer material is
   summarized only as non-normative pointers in Section 12 of this
   document.

The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-martinalli-open-purchase-receipts/

There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-martinalli-open-purchase-receipts-00.html

Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts


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