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Crossref and PKP enter new partnership phase to support richer and more inclusive metadata

Kornelia Korzec – 2025 September 22

In CommunityCollaborationNews ReleasePKP

Crossref and the Public Knowledge Project (PKP) have been working closely together for many years, sharing resources and supporting our overlapping communities of organisations involved in communicating research. Now we’re delighted to share that we have agreed on a new set of objectives for our partnership, centred on further development of the tools that our shared community relies upon, as well as building capacity to enable richer metadata registration for organisations using the Open Journal Systems (OJS).

Crossref is working towards the vision of a rich and open network underpinning global scholarship, making relationships between works, people, institutions, and actions visible, thanks to the thread of metadata – the research nexus. This vision depends upon participation of research communication organisations coming from all parts of the world, disciplines, and languages. Working with PKP towards making tools for metadata registration more comprehensive, accessible, and easier to use is a big step towards supporting our community to participate in the research nexus.

The renewed partnership has three main goals:

• Developments to improve experience and support metadata registration workflows in OJS, bringing relevant functionalities together under the Crossref plug-in, and developing an OMP Crossref plug-in.
• Joint community engagement in support of transitioning OJS users to the future Long-Term Support (LTS) version of OJS, which will enable richer metadata registration.
• Creation of a PKP School self-paced training course for system administrators.

Crossref and PKP have a rich history of collaboration, including previous investment in tools development in 2020, which resulted in some vital improvements to Crossref metadata management in OJS and a more streamlined experience for Crossref members on the platform, as well as many collaborative community events and training.

We know that thousands of Crossref members use OJS to register their metadata. Many are based in resource-constrained institutions, so the training provided by Crossref and PKP will be key to building their capacity to participate in the research nexus. With OJS 3.5 empowering organisations to register richer metadata, we look forward to opening up more opportunities for members to enhance their participation.

About Crossref

Crossref runs an open infrastructure to link research objects, entities, and actions, creating a lasting and reusable scholarly record that underpins open science. Together with their 23,000 members in 163 countries, Crossref drives metadata exchange and supports nearly 2 billion monthly API queries, facilitating global research communication, for the benefit of society.

About PKP

Public Knowledge Project (PKP) seeks to improve the scholarly and public quality, reach, and diversity of academic research through the research, development, implementation, and support of innovative open source software to support scholarly publishing and communication.