cite-as: A Link Relation to Convey a Preferred URI for Referencing
RFC 8574

Document Type RFC - Informational (April 2019; Errata)
Was draft-vandesompel-citeas (individual)
Last updated 2019-04-19
Replaces draft-vandesompel-identifier
Stream ISE
Formats plain text pdf html bibtex
IETF conflict review conflict-review-vandesompel-citeas
Stream ISE state Published RFC
Consensus Boilerplate Unknown
Document shepherd Adrian Farrel
Shepherd write-up Show (last changed 2019-02-06)
IESG IESG state RFC 8574 (Informational)
Telechat date
Responsible AD (None)
Send notices to Adrian Farrel <rfc-ise@rfc-editor.org>
IANA IANA review state IANA OK - Actions Needed
IANA action state RFC-Ed-Ack
Independent Submission                                  H. Van de Sompel
Request for Comments: 8574         Data Archiving and Networked Services
Category: Informational                                        M. Nelson
ISSN: 2070-1721                                  Old Dominion University
                                                               G. Bilder
                                                                Crossref
                                                                J. Kunze
                                              California Digital Library
                                                               S. Warner
                                                      Cornell University
                                                              April 2019

   cite-as: A Link Relation to Convey a Preferred URI for Referencing

Abstract

   A web resource is routinely referenced by means of the URI with which
   it is directly accessed.  But cases exist where referencing a
   resource by means of a different URI is preferred.  This
   specification defines a link relation type that can be used to convey
   such a preference.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This is a contribution to the RFC Series, independently of any other
   RFC stream.  The RFC Editor has chosen to publish this document at
   its discretion and makes no statement about its value for
   implementation or deployment.  Documents approved for publication by
   the RFC Editor are not candidates for any level of Internet Standard;
   see Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8574.

Van de Sompel, et al.         Informational                     [Page 1]
RFC 8574            The "cite-as" Link Relation Type          April 2019

Copyright Notice

   Copyright (c) 2019 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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Persistent Identifiers  . . . . . . . . . . . . . . . . .   3
     3.2.  Version Identifiers . . . . . . . . . . . . . . . . . . .   5
     3.3.  Preferred Social Identifier . . . . . . . . . . . . . . .   5
     3.4.  Multi-resource Publications . . . . . . . . . . . . . . .   6
   4.  The "cite-as" Relation Type for Expressing a Preferred URI
       for the Purpose of Referencing  . . . . . . . . . . . . . . .   6
   5.  Distinction with Other Relation Types . . . . . . . . . . . .   8
     5.1.  The "bookmark" Relation Type  . . . . . . . . . . . . . .   9
     5.2.  The "canonical" Relation Type . . . . . . . . . . . . . .   9
   6.  Examples  . . . . . . . . . . . . . . . . . . . . . . . . . .  10
     6.1.  Persistent HTTP URI . . . . . . . . . . . . . . . . . . .  11
     6.2.  Version URIs  . . . . . . . . . . . . . . . . . . . . . .  12
     6.3.  Preferred Profile URI . . . . . . . . . . . . . . . . . .  13
     6.4.  Multi-resource Publication  . . . . . . . . . . . . . . .  13
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  15
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  15
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  17
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  17

Van de Sompel, et al.         Informational                     [Page 2]
RFC 8574            The "cite-as" Link Relation Type          April 2019

1.  Introduction

   A web resource is routinely referenced (e.g., linked or bookmarked)
   by means of the URI with which it is directly accessed.  But cases
   exist where referencing a resource by means of a different URI is
   preferred, for example, because the latter URI is intended to be more
   persistent over time.  Currently, there is no link relation type to
   convey such an alternative referencing preference; this specification
   addresses this deficit by introducing a link relation type intended
   for that purpose.

2.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
Show full document text