- ARK (Archival Resource Key) (IETF Internet draft)
The scheme intended to facilitate the persistent naming and retrieval 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. ARK identifier resolve to 3 different outputs: resource, metadata, preservation commitment.
http://www.cdlib.org/inside/diglib/ark/
- Handle System
The Handle System is a general-purpose global name service that allows secured name resolution and administration over networks such as the Internet. The Handle System manages handles, which are unique names for digital objects and other Internet resources. A naming authority is authorised to create and maintain Handles, and the identifier for it must be unique to that authority but has no prescribed syntax. http://www.handle.net/
- N2T (Name to thing)
N2T is a consortium of cultural memory organizations and a small, ordinary web server, mirrored in several instances globally for reliability. This project means protect 200 organizations’ URLs fromhostname instability with 200 rewrite rules by simple HTTP redirects for each organization.
www.n2t.info
- PURLs (persistent URL)
A PURL is a Persistent Uniform Resource Locator. Functionally, a PURL is a URL. However, instead of pointing directly to the location of an Internet resource, a PURL points to an intermediate resolution service and by using the standard redirect capabilities of the web server which can redirect the requests for resources using a persistent identifier to the actual location of the document or resource.
http://www.purl.org
- URN (Uniform Resource Name)
URN is a URI that uses the urn scheme, and does not imply availability of the identified resource. URNs are intended to serve as persistent, location-independent resource identifiers and are designed to make it easy to map other namespaces (that share the properties of URNs) into URN-space. Therefore, the URN syntax provides a means to encode character data in a form that can be sent in existing protocols, transcribed on most keyboards, etc.
http://www.ietf.org/rfc/rfc1737.txt
http://www.ietf.org/rfc/rfc2141txt
http://www.ietf.org/rfc/rfc2611.txt
- XRI (OASIS Extensible Resource Identifier)
The purpose of XRI is to define a URI scheme and a corresponding URN namespace for distributed directory services that enable the identification of resources (including people and organizations) and the sharing of data across domains, enterprises and applications.
http://www.oais-open.org
