Latest blog posts
Lucy Ofiesh
2026 May 22

Express your interest in joining our Board of Directors

The Crossref Nominating Committee is inviting expressions of interest to join the Board of Directors of Crossref for the term starting in January 2027. The committee will gather responses from those interested and create the slate of candidates that our membership will vote on in an election in September.

Expressions of interest will be due Monday, June 22, 2026

...Find out more
Lena Stoll
2026 May 21

Mission Accessible: building better user interfaces for everyone

Today is Global Accessibility Awareness Day, and accessibility has been on our minds lately. We’ve recently completed an internal audit of all our user interfaces, and have added a new accessibility page to our website, where you can find the accessibility documentation that we put together as part of the audit.

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Rocío Gaudioso Pedraza
2026 May 14

From 1990 to today: connecting HFSP's grant history to the research nexus

For a funder with over thirty years of funding history, making all of their funding metadata openly available is no small undertaking. In this conversation, I chat with Guntram Bauer, Chief Scientific Officer at the Human Frontiers Science Program (HFSP), about how the organisation is working to register decades of grant data with Crossref, the challenges of linking historical awards to published research outputs, and what open, structured funding metadata means for accountability to member countries and the wider scientific community.

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Lucy Ofiesh
2026 May 06

March 2026 board meeting summary

We’re providing a summary of the board’s March 2026 meeting. At the meeting, the board reviewed progress in our key programs and initiatives, the strategic outlook for 2026, filled a vacancy on the Board, considered an additional legal entity for Crossref, and reviewed our governance structures. The resolutions are available on the dedicated section of our website, which also lists the members of the Board and offers further information about our governance.

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Documentation

OJS platform

Registering your DOI records using the OJS platform

In order to register DOI records with Crossref, you need to set up your OJS (Open Journal Systems) platform to create DOIs on your Crossref DOI prefix, and also set up your OJS platform to send your records to Crossref. You do this in a different way depending on whether you are using OJS 3.4 or OJS 3.3:

You can download the newest versions of OJS in the Public Knowledge Project’s (PKP) documentation.

Additional OJS plugins for Crossref

There are also other important plugins that can be enabled in OJS to enrich your metadata records:

  1. Cited-by (OJS Scopus/Crossref plugin) - as of OJS 3.2, this third-party plugin allows journals to display citations and citation counts (using article DOIs) from Scopus and/or Crossref.
  2. Funding Metadata plugin - as of OJS 3.1.2, it is possible to enable a funder registry plugin for submitting funding information to Crossref. The plugin will use the Open Funder Registry to check against existing funding agencies. The plugin will include funding information in your Crossref DOI deposits.
  3. Similarity Check plugin - if you are using OJS 3.1.2 or above, you are able to use the Similarity Check plugin. This will enable you to automatically send manuscripts to your iThenticate account to check their similarity to already published content. You will need to be subscribed to Crossref’s Similarity Check service for this to work.
  4. ROR plugin - the ROR Plugin for OJS enables authors to add the ROR ID for the organization they are affiliated with.

Getting help with OJS plugins

The team at Crossref didn’t create these plugins - they were either created by the team at PKP, or by third-party developers. Because of this, we aren’t able to give in-depth help or troubleshooting on problems with these plugins.

If you need more help, you can learn more from PKP’s Crossref OJS Manual and PKP’s Open Journals System 3.3 How to guides on DOI & Crossref Plugins plus there’s a very active PKP Community Forum that has more information on how to modify your OJS instance to submit metadata and register DOIs with Crossref.

Alternatively, you can contact the support team at PKP.

Page maintainer: Isaac Farley
Last updated: 2025-September-17