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DOI News
18 March 2002
At the ONIX International Steering Committee meeting at the London Book Fair on March 18, EDItEUR and the International DOI Foundation (IDF) announced their intention to ensure that users of ONIX and DOI will be able to easily achieve interoperability.
EDItEUR is committed to managing ONIX in such a way that any DOI Registration Agencies who choose to use it will get the support they need, and the user community can be assured that different applications of ONIX and DOIs will be consistent wherever they overlap. The International DOI Foundation is committed to ensuring that ONIX specifications can be easily used in developing DOI Applications.
The ONIX (Online Information Exchange) metadata specification ( is the international standard for representing and book, serial and video product information in electronic form. One of the key aims of ONIX is to provide a format for delivering structured data, and to that end ONIX has a much more highly structured model for information than other descriptive metadata formats, such as Dublin Core.
The DOI (Digital Object Identifier) is a system for managing digital content, based on resolution of persistent identifiers together with a well-defined model for metadata which enables users to map structured data such as ONIX into a DOI Application, for a wide range of applications. Many initial DOI applications are in the text sector, and therefore are based on ONIX or on other standards, which are mapped to ONIX.
DOI is an implementation of the indecs metadata framework, which was also a guiding principle of the ONIX development. This framework emphasises the importance of well-formed structured metadata, and provides the key to enabling ONIX and DOI to work together. The indecs (interoperability of data in e-commerce systems project) project was established at the end of 1998 and developed the <indecs> metadata framework, a reference model. At the end of the project rights in the Indecs Analysis were assigned jointly to the International DOI Foundation (developing the DOI) and EDItEUR (developing ONIX), who are actively ensuring its further development in projects such as MPEG which has adopted indecs as the basis for its Rights Data Dictionary.
ONIX and IDF have announced further work in support of this commitment:
  • IDF is currently refining procedures for defining DOI Application Profiles to add value for users. The aim of the initial work (to be carried out in the first quarter of 2002) is to develop a template which will help provide interoperability between DOI Application Profiles, with the minimum disruption or effort for existing users of ONIX and other systems. This work is based on recent progress in developing the indecs data dictionary. Any DOI Applications, which intend to use ONIX, will be part of the development process. This will include a review of the ONIX and other DOI metadata sets such as that used by CrossRef to ensure a high level of compatibility, and commentary on each field in the proposed template to contribute to a detailed appendix in the DOI Handbook.
  • EDItEUR will work closely with IDF on use of ONIX to generate DOI metadata sets as XML expressions. The current ONIX release goes only part of the way to enabling the description of some things that may have DOIs applied, such as content items (though the architecture is there to handle them): ONIX will therefore encourage anyone who wishes to do this to contact, and work with, IDF and the EDItEUR ONIX Support Team.
In addition to this work, indecs consultants will review in detail IDF metadata documentation, and the DOI Data Model, which relates to service definition and how this relates to ONIX applications. IDF and ONIX are also committed to working with other metadata standards to create similar mappings.
It is expected that significant progress will be made over the next few months with including all elements identified in the work above into future ONIX releases and into the <indecs> data dictionary used by DOI as part of the separately funded <indecs>2rdd project, in which IDF is participating.
For further information on ONIX, see
For further information on DOI, see the recently released Edition 2 of the DOI Handbook.
For further information on <indecs>rdd, see
The DOI is a system for interoperably identifying and exchanging intellectual property in the digital environment. A DOI assigned to content enhances a content producer's ability to trade electronically. It provides a framework for managing content in any form at any level of granularity, for linking customers with content suppliers, for facilitating electronic commerce, and enabling automated copyright management for all types of media. The International DOI Foundation, a non-profit organization, manages development, policy and licensing of the DOI to registration agencies and technology providers and advises on usage and development of related services and technologies. The DOI system uses open standards with a standard syntax (ANSI/NISO Z39.84) and is currently used by leading international technology and content organizations.
This is a service announcement for the International Digital Object Identifier Foundation and has been prepared to increase your awareness about important developments to enable digital copyright management of intellectual property. For more information, please send your request to
Updated 23 December 2003

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