is a system for recognizing digital content


The Digital Object Identifier System


The following materials provide high-level, introductory discussion about the DOI; detailed coverage of policy, operations and technology; and a description of the components of the DOI System and its underlying technology.

The DOI is an implementation of the CNRI Handle System®, in which the term "DOI" is used instead of "handle" to describe the identifiers. For more information on the role of the Handle System in the DOI System, see the Factsheet "DOI and Handle".

The Handle System web site includes an overview of the Handle System, definition of the namespace, and protocol specification which have been published as IETF Informational RFCs. Also of interest to the DOI community is a discussion of Handle System scalability and an explanation of handle resolution. (See also the DOI Handbook, Chapter 3, Resolution.)

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International DOI Foundation
Reston VA
United States 20191

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