The ISO and the CCSDS versions of the OAIS Reference Model are essentially the same.  The ISO version has a couple of pages of cover sheet attached to the front of the CCSDS version.  The cover sheets are ISO cover,  ISO boilerplate of ISO technical authority, update procedures, etc. replacing the first few pages of CCSDS boilerplate, and addition/update of ISO numbers for the CCSDS documents in the reference section.

ISO 14721 available at: =
the equivalent CCSDS 650.0-B-1 is available at:       (English)  (French)

For those that don't know a French version of the standard was created a couple of years ago and is now available from both ISO and CCSDS.

I assume most of you know that both ISO and CCSDS have a 5 year review cycle.  Our working group has recently opened a public comment period to support our 5 year review of the OAIS Reference Model.  I'll attach the announcement to this message for those who haven't seen it.

John Garrett

 Announcement of a Comment Period for the Five Year Review of the
Reference Model for an Open Archival Information System (OAIS) Standard
OAIS Overview
The “Reference Model for an Open Archival Information System (OAIS)” was developed for use in facilitating a broad, discipline independent, consensus on the requirements for an archive or repository to provide permanent, or indefinite long-term, preservation of digital information.  It was also intended to support the development of additional digital preservation standards and to encourage digital preservation support by vendors. 
An OAIS is an archive consisting of an organization of people and systems that has accepted the responsibility to preserve information and make it available to a designated community. The standard defines a set of responsibilities that an OAIS archive must fulfill and this allows an OAIS archive to be distinguished from other uses of the term ‘archive’.
Since its adoption as both Consultative Committee for Space Data Systems (CCSDS) and ISO standards, the OAIS Reference Model has been welcomed and widely adopted by virtually all types of digital preservation communities.  Most modern digital archiving initiatives reference the OAIS Reference Model standard.  It has also been widely used by organizations to inform their implementations of new or upgraded archiving systems.
Five Year Review
In compliance with ISO and CCSDS procedures, a standard must be reviewed every five years and a determination made to reaffirm, modify, or withdraw the existing standard. The “Reference Model for an Open Archival Information System (OAIS)” standard was approved as CCSDS 650.0-B-1 in January 2002 and was approved as ISO standard 14721 in 2003. While the standard can be reaffirmed given its wide usage, it may also be appropriate to begin a revision process. Our view is that any revision must remain backward compatible with regard to major terminology and concepts.  Further, we do not plan to expand the general level of detail.  A particular interest is to reduce ambiguities and to fill in any missing or weak concepts.  To this end, a comment period has been established.
Comment Process
We are soliciting recommendations for updates that will reduce ambiguities or improve missing or weak concepts. We also want to know if you prefer that no changes be made. Please categorized your comments for changes under one of the following:
·         Updates needed for clarification
·         Updates to add missing concepts or strengthen weak concepts
·         Identification of any outdated material
Please be as specific as possible with your suggestions.  For this consideration, comments must be received by 30 October, 2006.
Comments may be submitted to: [log in to unmask]
Should the decision be taken to update the OAIS Reference Model, there should be an opportunity to participate in the process. Please also express your interest in participating and, if known, an indication of your expected level of effort.

At 04:38 AM 7/27/2006, you wrote:

does anyone know more about the contracts of ISO regarding newer
versions or developments of standards? Do followup reports have to be
published through ISO? And is there a possible Open Access/Postprint
model for such standards?
I don't know which differences occured in the OAIS standard since the
publication of the Blue Book. Had anyone the possibility to look into
the ISO-version to compare the two versions?


Ruth Duerr wrote:
> OK, perhaps PREMIS isn't ready yet.  However, not being an
> "international standard" will limit the audience
> that can and will implement PREMIS.
> Also, correct me if I am wrong; but, simply because a standard
> has been published by ISO does not mean that the source
> standard has to be removed from public access by the sponsoring
> standards body.  For example, the OAIS reference model (i.e.,
> CCSDS 650.0 B 1 = ISO 14721:2003) is still
> freely available on the web.
> - Ruth
> On Jul 24, 2006, at 8:51 AM, Rebecca S. Guenther wrote:
>> It seems a bit premature right now. We plan to do some revisions of the
>> data dictionary and schemas in the next several months (the PREMIS web
>> site documents some of those that are needed). After we convene the
>> Editorial Committee (whose first job will be to look at needed changes),
>> we can revisit this question.
>> One problem with ISO standards is that they are not freely available,
>> which makes some people reluctant to go through the process. We would
>> like
>> to keep our documentation publicly and freely available.
>> Rebecca
>>> R. Duerr
>>> Data Stewardship Program Manager
>>> National Snow and Ice Data Center
>>> University of Colorado at Boulder