In 2018 the California Digital Library (CDL) and DuraSpace (now LYRASIS) announced a collaboration aimed at building an open, international community around Archival Resource Keys (ARKs) and their use as persistent identifiers in the open scholarly ecosystem.

In January 2021, the community that matured from that collaboration was renamed the

ARK Alliance (,

and it became the new public face of the work that continues from the ARKs-in-the-Open project. Please visit as the first stop for information about ARKs – their users, community, software, best practices, etc. The older website (this wiki) continues to provide collaboration support for the ARK Alliance's working groups listed in the sidebar.

Project Summary

As of January 2021 over 700 institutions (research, not-for-profit, private, government) across the world had registered to use ARKs.  They created an estimated 8.2 billion ARKs with publicly resolvable links to objects (digital, physical, people, places, etc).

Since 2001, CDL had served as the incubator for ARK infrastructure, consisting primarily of the specification, a registry of organizations using ARKs, and a global resolver service. To achieve long-term sustainability, the ARK infrastructure had to emerge from CDL and mature in partnership with multiple organizations and community participants to guide its future.

To jumpstart the process, CDL sought a collaboration with DuraSpace, an independent not-for-profit organization providing leadership for open technologies and communities such as Fedora, DSpace, and VIVO. With DuraSpace/LYRASIS’s help, the ARK outreach efforts have included:

These activities were just a start, and growth continues in the ARK Alliance.