Archival Resource Keys (ARKs) serve as persistent identifiers, or stable, trusted references for information objects. Among other things, they aim to be web addresses (URLs) that don’t return 404 Page Not Found errors. The ARK Alliance is an open global community supporting the ARK infrastructure on behalf of research and scholarship. End users, especially researchers, rely on ARKs for long term access to the global scientific and cultural record. Since 2001 some 8.2 billion ARKs have been created by over 1000 organizations — libraries, data centers, archives, museums, publishers, government agencies, and vendors. They identify anything digital, physical, or abstract. ARKs are open, mainstream, non-paywalled, decentralized persistent identifiers that can be created by an organization as soon as it is registered with a NAAN (Name Assigning Authority Number). Once registered, an ARK organization can create unlimited numbers of ARKs and publicize them via the n2t.net global resolver or via their own local resolver.

Prefix
ark
Keywords
data management subject agnostic
Links
Homepage @ARKsInTheOpen
Contact
John Kunze   0000-0001-7604-8041   jkunze
Pattern for Local Unique Identifiers

Local identifiers in Archival Resource Key should match this regular expression:
^/*[0-9A-Za-z]+(?:/[\w/.=*+@\$-]*)?(?:\?.*)?$

Example Local Unique Identifier
/53355/cl010066723   Resolve
Pattern for CURIES

Compact URIs (CURIEs) constructed from Archival Resource Key should match this regular expression:
^ark:/*[0-9A-Za-z]+(?:/[\w/.=*+@\$-]*)?(?:\?.*)?$

Example CURIE
ark:/53355/cl010066723
MIRIAM Namespace Embedded in LUI
The legacy MIRIAM standard for generating CURIEs with this resource includes the namespaceEmbeddedInLUI as true. The actual part that gets prefixed before the local unique identifier regex, otherwise known as the banana, is ark:. Therefore, you might see local unique identifiers written out as CURIEs.
References
Other https://n2t.net/e/about.html
Contributors
Metaregistry Archival Resource Key

The metaregistry provides mappings between the Bioregistry and other registries. There are 4 mappings to external registries for ark with 2 unique external prefixes.

Registry Name Registry Metaprefix External Prefix Curate
BioContext biocontext ARK
FAIRSharing FAIRSharing logo fairsharing FAIRsharing.f928f1
Identifiers.org Identifiers.org logo miriam ark
Name-to-Thing Name-to-Thing logo n2t ark
Providers

Providers are various services that resolve CURIEs to URLs. The example CURIE ark:/53355/cl010066723 is used to demonstrate the provides available for ark. Generation of OLS and BioPortal URLs requires additional programmatic logic beyond string formatting.

Name Metaprefix URI
Archival Resource Key ark http://n2t.net/ark:/53355/cl010066723
Bioregistry bioregistry https://bioregistry.io/ark:/53355/cl010066723
Identifiers.org miriam https://identifiers.org/ark:/53355/cl010066723
Name-to-Thing n2t https://n2t.net/ark:/53355/cl010066723