Network Working Group K. Singh Internet-Draft Apex Intelligence Empire / ROCKYFILMS888 PTY LTD Intended status: Informational 19 July 2026 Expires: 20 January 2027 PSI-03: VPP Dispatch Conformance Attestation draft-singh-apex-psi-03-01 Abstract PSI-03 specifies a portable, Ed25519-signed bond that anchors a registered NDIS practitioner's professional identity to a DID- compatible decentralised identifier without requiring a central registry. The bond enables cross-provider, cross-border practice verification while preserving privacy and issuer sovereignty. Status of This Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at https://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on 20 January 2027. Copyright Notice Copyright (c) 2026 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/ license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Singh Expires 20 January 2027 [Page 1] Internet-Draft draft-singh-apex-psi-03 July 2026 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Bond Envelope . . . . . . . . . . . . . . . . . . . . . . . . 2 3. Verification . . . . . . . . . . . . . . . . . . . . . . . . 2 4. Security Considerations . . . . . . . . . . . . . . . . . . . 2 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 2 6. References . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. Introduction Practitioner identity in the NDIS ecosystem is fragmented. Each provider maintains its own register. PSI-03 defines a sovereign identity bond that lets practitioners carry a single verifiable credential across all providers without either the practitioner or the provider depending on a central authority. 2. Bond Envelope { "psi": "03", "practitioner_did": "", "registrar": "", "bonded_at": "", "expires_at": "", "credentials": [ { "type": "registration", "body": "" }, { "type": "qualification", "body": "" }, { "type": "endorsement", "body": "" } ], "signature": "" } 3. Verification The verifying party MUST: 1. Resolve the registrar's Ed25519 public key from /.well-known. 2. Verify the bond signature. 3. Verify each presented credential's chain to a trusted root. 4. Security Considerations A bond is not a proof of current registration. The verifying party SHOULD check the registrar's revocation list if real-time status is required. 5. IANA Considerations None. Singh Expires 20 January 2027 [Page 2] Internet-Draft draft-singh-apex-psi-03 July 2026 6. References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997. [RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, May 2017. [RFC8785] Rundgren, A., Jordan, B., and S. Erdtman, "JSON Canonicalization Scheme (JCS)", RFC 8785, DOI 10.17487/RFC8785, June 2020. Author's Address Kawaljeet Singh Apex Intelligence Empire Balaclava, Victoria, Australia Email: kawaljeet.singh3008@gmail.com URI: https://apex-infrastructure.com Singh Expires 20 January 2027 [Page 3]