Internet-Draft                                                M. Norton
Intended status: Informational                                Independent
Expires: January 4, 2027                                      July 3, 2026

                 SDLP Transformation Model
              draft-norton-sdlp-transformation-00

M. Norton
Individual Submission
Email: mark433norton@gmail.com

Abstract

   The Secured Digital Lifecycle Protocol (SDLP) defines a unified
   framework for representing, identifying, and tracking digital objects
   across their entire lifecycle.  This document specifies the SDLP
   transformation model, which describes how digital objects change,
   evolve, or produce descendants through normative and verifiable
   processes.

   A transformation is any operation that produces a new digital object
   from an existing one.  This document defines the transformation model,
   the required identity and lineage extensions, the invariants that must
   be preserved, and the logging requirements needed to ensure integrity,
   accountability, and tamper-evidence.  These rules apply uniformly
   across all SDLP object types and lifecycle states.

   This specification is a core component of the SDLP architecture and
   is intended to be used alongside the SDLP Overview, Identity, Object
   Format, Lineage, Lifecycle, and Security Architecture documents.

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."

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.

   This document is subject to 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.  Code Components extracted from this
   document must include Simplified BSD License text as described in
   Section 4.e of the Trust Legal Provisions and are provided without
   warranty as described in the Simplified BSD License.

   This document may contain code components.  Such code components are
   licensed under the Simplified BSD License.  These code components are
   provided without warranty as described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Transformation Model  . . . . . . . . . . . . . . . . . . .   5
   4.  Descendant Identity Requirements  . . . . . . . . . . . . .   7
   5.  Transformation Invariants  . . . . . . . . . . . . . . . .   9
   6.  Transformation Types  . . . . . . . . . . . . . . . . . . .  11
   7.  Transformation Logging Requirements  . . . . . . . . . . .  14
   8.  Security Considerations  . . . . . . . . . . . . . . . . .  17
   9.  IANA Considerations  . . . . . . . . . . . . . . . . . . .  19
   10. References  . . . . . . . . . . . . . . . . . . . . . . . .  20
       10.1.  Normative References  . . . . . . . . . . . . . . .  20
       10.2.  Informative References  . . . . . . . . . . . . . .  21
   Appendix A.  Examples  . . . . . . . . . . . . . . . . . . . .  22
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . .  24
   Author's Address . . . . . . . . . . . . . . . . . . . . . . .  25

1.  Introduction

   [UNCHANGED — omitted here for brevity]

2.  Terminology

   [UNCHANGED]

3.  Transformation Model

   [UNCHANGED]

4.  Descendant Identity Requirements

   [UNCHANGED]

5.  Transformation Invariants

   [UNCHANGED]

6.  Transformation Types

   [UNCHANGED]

7.  Transformation Logging Requirements

   [UNCHANGED]

8.  Security Considerations

   [UNCHANGED]

9.  IANA Considerations

   This document has no IANA actions.

10.  References

10.1.  Normative References

   [UNCHANGED]

10.2.  Informative References

   [UNCHANGED]

Appendix A.  Examples

A.1.  Duplication Example

   [UNCHANGED]

A.2.  Conversion Example

   [UNCHANGED]

A.3.  Extraction Example

   Ancestor Identity: sdlp:3001
   Transformation Type: Extraction
   Extraction Criteria: pages 1-5
   Descendant Identity: sdlp:3002
   Lineage:
      - ancestor: sdlp:3001
   Log:
      - type: extraction
      - parameters: pages=1-5
      - timestamp: 2026-07-03T12:10:00Z

A.4.  Segmentation Example

   [UNCHANGED]

A.5.  Composition Example

   [UNCHANGED]

Acknowledgments

   [UNCHANGED]

Author's Address

   M. Norton
   Independent
   Email: mark433norton@gmail.com