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Title : The ARK Persistent Identifier Scheme
Author(s) : J. Kunze, R. Rodgers
Filename : draft-kunze-ark-13.txt
Pages : 3
Date : 2007-2-28
The ARK (Archival Resource Key) naming scheme is designed to
facilitate the high-quality and persistent identification of
information objects. A founding principle of the ARK is that
persistence is purely a matter of service and is neither inherent in
an object nor conferred on it by a particular naming syntax. The best
that an identifier can do is to lead users to the services that
support persistence. The term ARK itself refers both to the scheme
and to any single identifier that conforms to it. An ARK has five
components:
[http://NMAH/]ark:/NAAN/Name[Qualifier]
an optional and mutable Name Mapping Authority Hostport, the "ark:"
label, the Name Assigning Authority Number (NAAN), the assigned Name,
and an optional and possibly mutable Qualifier supported by the NMA.
The NAAN and Name together form the immutable persistent identifier
for the object. An ARK is a special kind of URL that connects users
to three things: the named object, its metadata, and the provider's
promise about its persistence. When entered into the location field
of a Web browser, the ARK leads the user to the named object. That
same ARK, followed by a single question mark ('?'), returns a brief
metadata record that is both human- and machine-readable. When the
ARK is followed by dual question marks ('??'), the returned metadata
contains a commitment statement from the current provider. Tools
exist for minting, binding, and resolving ARKs.
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