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  • simplicity – access relies only on mainstream web "redirects" and ordinary "get" requests
  • versatility – with "inflections" (different endings), an ARK should access data, metadata, promises, and more
  • transparency – no identifier can guarantee stability, and ARK inflections help users make informed judgements
  • visibility – syntax rules make ARKs easy to extract from texts and to compare for variant and containment relationships

Between 2001 and 2012 one hundred fifty organizations In the last fourteen years 317 organizations in 15 countries registered to assign ARKsRegistrants include libraries, archives, museums, publishers (PeerJ), government agencies (EPA), academic institutions (Princeton), and technology companies (Google). Some of the largest major users are

  • The California Digital Library
  • The Internet Archive
  • National Library of France (Bibliothèque nationale de France)
  • Portico Digital Preservation Service
  • University of California Berkeley
  • University of North Texas
  • University of Chicago


  • University College Dublin
  • The British Library

We maintain a discussion group for ARKs (Archival Resource Keys) at