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A Trusted Community Archive


CLOCKSS is a joint venture between the world’s leading scholarly publishers and research libraries whose mission is to build a sustainable, geographically distributed dark archive with which to ensure the long-term survival of Web-based scholarly publications for the benefit of the greater global research community.

From Prototype to Production

The founding members of the CLOCKSS Pilot Program are pleased to announce that CLOCKSS has incorporated and will go live in January 2009. Two years ago, scholarly publishers and research libraries, challenged by the responsibility to preserve the digital assets of the community, joined forces to build a prototype for a global dark archive. Their unique collaboration focused on creating an archive "cooperative," with publishers and libraries running the archive together. The prototype was successfully built and tested and, during the pilot period, the need for a robust governing structure was addressed.

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CLOCKSS is a not-for-profit, community-governed, partnership of libraries and publishers. Presently seven libraries (six in the U.S. and one in the U.K.) and 11 publishers are participating in the CLOCKSS Pilot Program. Each participating library houses two "CLOCKSS boxes," computers which store and preserve materials to which the libraries do and do not subscribe, in their effort to build a comprehensive archive of web-based scholarly materials. CLOCKSS boxes, using open-source LOCKSS (Lots of Copies Keep Stuff Safe) software, continuously monitor and self-correct the preserved content to ensure its authenticity over the very long term. When the Board determines a trigger event has occurred, i.e., the digital content is no longer available from the publisher, they will move the content to a hosting platform and the impacted content will be made available for free to the world. When the CLOCKSS pilot program concludes in mid-2008, additional publishers and libraries will join the effort to save web-published scholarly literature from disappearing.

CLOCKSS Board Members

One of the strengths of the CLOCKSS Initiative is that the founding organizations, the world's leading publishers and top research libraries, share a long history of survival and a deep understanding of, and experience with, long-term sustainability.

Pilot Program Libraries and Year Founded

Pilot Program Publishers and Year Founded