Latest blog posts
Sara Bowman
2025 August 12

We’ve migrated to the cloud; we hope you didn’t notice (but maybe you did)

TLDR: We’ve successfully moved the main Crossref systems to the cloud! We’ve more to do, with several bugs identified and fixed, and a few still ongoing. However, it’s a step in the right direction and a significant milestone, as, whilst it is a much larger financial investment, it addresses several risks and limitations and shores up the Crossref infrastructure for the future.

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David Haber
2025 August 04

From storage closet to metadata champions: ASM's journey toward a smarter scholarly infrastructure

The American Society for Microbiology (ASM) has earned recognition in Crossref’s Participation Reports for its exceptional metadata coverage among large publishing members––an achievement built on intentional change, technical investment, and collaborative work. In this Q&A, the ASM team shares what that journey looked like, the challenges they’ve tackled, and how centering metadata has helped them better connect research with the global scientific community.

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Amanda Bartell
2025 July 28

Changing fees to increase equity and reduce complexity

The Crossref Board recently approved three recommendations for changes to our fees: introduction of a new lowest membership fee tier, removal of volume discounts for record registration, and normalisation of registration fees for peer reviews. The changes will be applied from January 2026.

This is the first outcome of the Resourcing Crossref for Future Sustainability (RCFS) program, launched in 2023, as a comprehensive effort to review all aspects of Crossref revenue and how we’re adapting to growth and the diversification of our membership. The program aims to make fees more equitable, simplify our complex fee schedule, and rebalance revenue sources.

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Yasiel Pérez Vera
2025 July 25

Metadata excellence among new members: La Salle University, Perú

Click here for the version in English

En 2025, lanzamos los Premios Crossref a los Metadatos, con el objetivo de destacar el rol de nuestra comunidad en la gestión y el enriquecimiento del registro académico. En esta publicación, destacamos a la Universidad La Salle, Perú, ganadora del premio a la excelencia entre los nuevos miembros, y contamos con la participación de Yasiel Pérez, Responsable Técnico y Editor de la Revista, quien comparte sus ideas:

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Documentation

XSD XML query output format

The XSD_XML format follows the Crossref query output schema. It provides basic citation metadata that has been processed by Crossref. For doi-to-metadata XML querying, some controls are available for including expanded data and/or components in results.

XSD XML examples

The default query set will return basic citation metadata only:

<query key="q1">
<doi>10.1107/s1600536814013208</doi>
</query>

Set expanded-results=“true” to return additional author, article title, and date information:

<query list-components="false" expanded-results="true" key="expanded">
   <doi>10.1107/s1600536814013208</doi>
</query>

Set list-components=“true” to include components in results:

<query list-components="true" expanded-results="true" key="expanded-with-components">
   <doi>10.1107/s1600536814013208</doi>
</query>

Example files: xsd_xml.out.xml and xsd_xml.in.xml

Page maintainer: Martyn Rittman
Last updated: 2020-April-08