Current Applications of the Handle System

The following are some of the organizations and projects that are using handles for identifying digital objects.


DOI® System

The DOI System is an application of the Handle System to intellectual property. The DOI System is managed and developed by the International DOI Foundation, a not-for-profit membership organization. The DOI System adds to the Handle System an approach based on structured associated metadata; policies regarding scope and application; procedures for ensuring consistency and quality control across applications; business models; and specific application tools. Initial implementations are now being supplemented by increasingly sophisticated value-added tools for metadata management and content management, which will use the Handle System multiple resolution function. More information is available in the DOI System Factsheet "DOI System and the Handle System".


Entertainment Identifier Registry (EIDR)

Entertainment Identifier Registry (EIDR), an international coalition led by MovieLabs, CableLabs®, Comcast and Rovi Corporation, is an identifier system for movie and television assets that provides global unique identifiers for the entire range of audiovisual object types that are relevant to entertainment commerce. It is an open, standards-based effort using the DOI System (an implementation of the Handle System) and CNRI DO Registry software.



The Advanced Distributed Learning (ADL) Initiative, managed by the Office of the Secretary of Defense Under Secretary of Defense for Readiness (DUSD/R), has started an effort to specify the Content Object Repository Discovery and Registration/Resolution Architecture (CORDRA). This effort will bring together existing standards and specifications in content management and network computing with the goal of greatly enhancing the reuse and interoperability of distributed learning content compatible with the sharable Content Object Reference Model (SCORM). One of the components selected for the project is CNRI's Handle System technology, for use in generating and resolving identifiers. This system was developed as part of CNRI's DARPA-funded Digital Object Architecture research, much of which is highly relevant to the CORDRA project. Specifically, CNRI will design a registration system for the ADL CORDRA project, to be known as the ADL Registry or ADL-R, and deliver it for use at the Defense Technical Information Center (DTIC). This effort will enable the discovery and reuse of learning content held in repositories distributed across the DoD.


Global Environment for Network Innovations (GENI)

The Global Environment for Network Innovations (GENI) is a unique virtual laboratory for at-scale networking experimentation, for envisioning and creating new possibilities of future internets. GENI is currently in a prototyping and design stage. Leading academic and industrial teams across the United States are working together to build, integrate, and operate prototypes of the GENI virtual laboratory. CNRI's Handle System is a component of the Digital Object Registry Project funded under GENI in Spirals 1 through 3.


DSpace - Digital Repository System

DSpace is a joint project of MIT Libraries and the Hewlett-Packard Company to provide stable, long-term storage to capture, preserve and communicate the intellectual output of MIT faculty, researchers, centers and labs. DSpace uses handles as persistent identifiers for the items stored.


Handle System - Globus Toolkit Integration Project

The Handle System -- Globus Toolkit Integration Project leverages CNRI's Handle System technology through GT's Web services' protocols. The project will produce code and tools that will allow leverage of the Handle System technology through proxy-service interfaces that implement a Web services' front-end. Those proxy-services will enable implementation of the endpoints for protocols like the SAML attribute query exchange, the WSRF Service Group properties, XKMS, or a Renewable Endpoint Reference.


The National Digital Library Program (NDLP)

The Library of Congress's National Digital Library Program is a broad based program to convert collections of historic materials to digital formats and to make them available across the Internet. CNRI is working with the Library of Congress to use handles to identify material in the library's own collections.


January 2012