Project summary

ARK (Archival Resource Key) identifiers are widely used for objects and abstractions related to scientific and scholarly heritage. ARKs were developed at the US National Library of Medicine and the California Digital Library (CDL) especially, but not exclusively, for the library, archive and museum community. Their built-in flexibility and ease-of-use has proven popular with researchers and scholars across all academic disciplines, as well as government, commercial and nonprofit sectors. Indeed, over 600 institutions across the world have registered to use ARKs, with usage conservatively estimated to number 3.2 billion assigned ARK identifiers.

CDL and DuraSpace/LYRASIS launched this pilot project as a first step toward ensuring the ongoing health and development of the ARK infrastructure. By “ARK infrastructure,” we mean open source software tools and systems, the ARK specification, and production-grade replicated resolver services for N2T.net (Name-to-Thing, a generic resolver for over 700 identifier types and also the global ARK resolver). ARKs represent the only mainstream persistent identifier scheme that is truly open, decentralized, non-siloed, and non-paywalled. Community ownership of this infrastructure has been under discussion since 2007, and the project made a start by establishing an active ARK community group with the aims of

  1. Maintaining two key assets: the ARK specification and the NAAN registry, and

  2. Submitting the current ARK specification to the IETF as in Internet Informational RFC.

CDL is a committed member of the ARK community and invites anyone with an interest in promoting long-term access to information objects to join us.

How to get involved

What we're working on now

Advisory Group

Technical Working Group

Short Term

Longer Term

NAAN Registry Working Group

Short Term

Longer Term

Outreach Working Group

Short term 

Longer term

Aspirational items - we imagine ourselves working on these!

We envision an active and involved global community that sustains ARK identifiers as part of the open scholarly and research infrastructure.