A Uniform Resource Name (URN) Namespace for the Web3D Consortium (Web3D)
RFC 3541

Document Type RFC - Informational (May 2003; No errata)
Author Aaron Walsh 
Last updated 2015-10-14
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Network Working Group                                           A. Walsh
Request for Comments: 3541                              Web3D Consortium
Category: Informational                                         May 2003

                A Uniform Resource Name (URN) Namespace
                    for the Web3D Consortium (Web3D)

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2003).  All Rights Reserved.


   This document describes a Uniform Resource Name (URN) namespace for
   the Web3D Consortium (Web3D) for naming persistent resources such as
   technical documents and specifications, Virtual Reality Modeling
   Language (VRML) and Extensible 3D (X3D) files and resources,
   Extensible Markup Language (XML) Document Type Definitions (DTDs),
   XML Schemas, namespaces, style sheets, media assets, and other
   resources produced or managed by Web3D.

1. Introduction

   Web3D is a non-profit organization with a mandate to develop and
   promote open standards to enable 3D for the Internet, Web and
   broadcast applications.  Web3D is responsible for developing,
   advancing, and maintaining the VRML97 ISO/IEC International Standard
   (ISO/IEC 14772-1:1997), X3D (the forthcoming official successor to
   VRML) and related technologies.

   Web3D maintains and extends its standardization activities through
   the coordinated efforts of dedicated Working Groups, Task Groups, and
   professional Liaisons to related standards bodies such as ISO, W3C,
   and MPEG.  See http://web3d.org/ for details.

   Web3D would like to assign unique, permanent, location-independent
   names based on URNs for some resources it produces or manages.

   This namespace specification is for a formal namespace.

Walsh                        Informational                      [Page 1]
RFC 3541         URN Namespace for the Web3D Consortium         May 2003

2. Specification Template

   Namespace ID:


   Registration Information:

      Registration Version Number: 1
      Registration Date: 2003-05-06

   Declared registrant of the namespace:

      Web3D Consortium, Inc.
      Email: <contact@web3d.org>
      Web: <http://web3d.org>

      Name       : Aaron E. Walsh
      Affiliation: Web3D Working Group Chair; Web3D Liaison to MPEG, W3C
      Address    : 18 Haviland Street, Boston, MA USA 02115
      Phone      : +1 (617) 536-3279
      Email      : <aaron@mantiscorp.com>
      Web        : <http://mantiscorp.com/people/aew/>

   Declaration of syntactic structure:

      URNs assigned by Web3D will have the following hierarchical
      structure based on the group's organizational structure:

         urn:web3d:{subgroup}:{subgroup-specific string}

      where "subgroup" corresponds to an official Web3D subgroup or
      activity such as the VRML standard ('vrml97'), Extensible 3D
      ('x3d'), Universal Media Working Group ('media'), Geographical
      VRML Working Group ('geovrml'), Humanoid Animation Working Group
      ('hanim') and so forth, and "subgroup-specific string" is a US-
      ASCII string that conforms to URN Syntax requirements ([RFC2141]).

      In cases where ownership or management of a resource is shared by
      multiple Web3D subgroups or activities, a general category may be
      used in place of a specific subgroup.

      Chairs of Web3D subgroups and activities assign all unique
      identifiers that fall within the scope of the subgroup or activity
      that they chair.  Chairs of Web3D subgroups and activities are
      also responsible for publishing the specific structure of URNs
      assigned by their group or activity.

Walsh                        Informational                      [Page 2]
RFC 3541         URN Namespace for the Web3D Consortium         May 2003

   Relevant ancillary documentation:


   Identifier uniqueness considerations:

      Identifier uniqueness will be enforced by the Web3D Board of
      Directors (BoD) in cooperation with Chair(s) of corresponding
      Web3D subgroups.

   Identifier persistence considerations:

      Web3D is committed to maintaining the accessibility and
      persistence of all resources that are officially assigned URNs by
      the organization.

   Process of identifier assignment:

      Assignment is limited to the owner and those authorities that are
      specifically designated by the owner.  Web3D may designate
      portions of its namespace for assignment by other parties.

   Process of identifier resolution:

      The owner will develop and maintain "URN catalogs" that map all
      assigned URNs to Uniform Resource Locators (URLs), specifically to
      enable Web-based resolution of named resources.  In the future, an
      interactive online resolution system may be developed to automate
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