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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 2011 about a 2012 one hundred fifty organizations registered to assign ARKs.  Some of the largest users are