Digital Object Identifiers: Structure, Persistence and Registration
Introduction
A Digital Object Identifier (DOI) is a unique, persistent identifier assigned to an object, such as a journal article, book chapter, dataset, or research report. It connects the object with registered metadata and a maintained destination.
A DOI identifies the object rather than its current web location. Its usefulness depends on organizations keeping the associated metadata and destination information up to date.
1. DOI Structure
A DOI contains a prefix and suffix, separated by a forward slash.
Using the supplied example, 10.1080/21670811.2014.976400:
Components of a DOI
| Component | Example | Function |
|---|---|---|
| Prefix | 10.1080 |
Contains the DOI directory indicator and registrant code |
| Separator | / |
Separates prefix and suffix |
| Suffix | 21670811.2014.976400 |
Distinguishes the object within the registrant’s DOI namespace |
| Resolver form | https://doi.org/ followed by the DOI |
Makes the identifier usable as a web link |
The registrant is the organization responsible for assigning the identifier. The prefix is not a reliable way to infer the object’s current publisher or registration agency. The suffix is chosen by the registrant and should not be assumed to encode a publication year or document type.
2. Persistence and Resolution
Resolution is the process through which a DOI directs a user to a registered destination, usually a landing page describing the object.
An ordinary URL may stop working when a publisher reorganizes its website. A DOI can remain unchanged while its registered destination is updated. For example, after an article moves to a new platform, the responsible organization should update the DOI’s resolution URL.
Persistence is therefore a maintained commitment, not an automatic guarantee that a link can never fail. A working DOI also does not guarantee free access: the destination may contain subscription-controlled content.
In citations, follow the required style and use the DOI resolver form where specified. The supplied identifier can be displayed
3. Obtaining a DOI as an Author
For journal articles and book chapters, the publisher normally arranges DOI registration where it provides this service. Acceptance alone does not guarantee assignment, and authors should check the publisher’s policy.
For other research outputs, repositories may provide DOI services. Zenodo, Figshare, OSF, and institutional repositories have different eligibility, publication, and registration procedures. DOI assignment should not be assumed to occur automatically for every uploaded file.
Zenodo, for example, registers a DOI when an eligible record is published. It also permits DOI reservation before publication, but reservation and completed registration are distinct stages.
Authors should check for an existing DOI and follow repository guidance on versions and related records.
4. Registration by Publishers and Institutions
Organizations can arrange registration through a DOI registration agency, directly or through an appropriate intermediary.
Routes and Responsibilities
| Route | Typical role | Important qualification |
|---|---|---|
| Academic publisher | Registers identifiers for its publications | Assignment depends on publisher policy |
| Research repository | Registers identifiers for eligible deposited outputs | Requirements vary by service |
| Crossref | Supports registration of scholarly content | Membership or sponsor arrangements apply |
| DataCite | Supports identifiers for research outputs, including datasets | Service and participation arrangements vary |
A basic organizational workflow is to establish a registration arrangement, prepare the identifier and metadata, deposit the registration information, and maintain metadata and destination links.
Metadata commonly includes the title, creators, publication date, resource type, and destination URL. Requirements depend on the agency and content type.
Fees also vary. Crossref uses membership and content-registration fees, with sponsor arrangements and eligibility-based exceptions; this should not be generalized into one universal DOI pricing model.
Conclusion
DOIs support reliable identification, citation, and discovery. Their long-term value depends on accurate registration, maintained metadata, and updated resolution links. DOI possession does not itself certify peer review, research quality, or journal indexing.
Corrections and clarifications: DOI persistence is distinguished from guaranteed permanent access. Prefix meaning, repository assignment, reservation, and fee arrangements have been qualified rather than treated as universal rules.