Latest blog posts
Ginny Hendricks
2024 December 12

A progress update and a renewed commitment to community

Looking back over 2024, we wanted to reflect on where we are in meeting our goals, and report on the progress and plans that affect you - our community of 21,000 organisational members as well as the vast number of research initiatives and scientific bodies that rely on Crossref metadata. In this post, we will give an update on our roadmap, including what is completed, underway, and up next, and a bit about what’s paused and why.

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Rosa Morais Clark
2024 December 09

A summary of our Annual Meeting

The Crossref2024 annual meeting gathered our community for a packed agenda of updates, demos, and lively discussions on advancing our shared goals. The day was filled with insights and energy, from practical demos of Crossref’s latest API features to community reflections on the Research Nexus initiative and the Board elections. Our Board elections are always the focal point of the Annual Meeting. We want to start reflecting on the day by congratulating our newly elected board members: Katharina Rieck from Austrian Science Fund (FWF), Lisa Schiff from California Digital Library, Aaron Wood from American Psychological Association, and Amanda Ward from Taylor and Francis, who will officially join (and re-join) in January 2025.

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Lucy Ofiesh
2024 December 07

2024 POSI audit

Background The Principles of Open Scholarly Infrastructure (POSI) provides a set of guidelines for operating open infrastructure in service to the scholarly community. It sets out 16 points to ensure that the infrastructure on which the scholarly and research communities rely is openly governed, sustainable, and replicable. Each POSI adopter regularly reviews progress, conducts periodic audits, and self-reports how they’re working towards each of the principles. In 2020, Crossref’s board voted to adopt the Principles of Open Scholarly Infrastructure, and we completed our first self-audit.

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Ed Pentz
2024 December 05

Summary of the environmental impact of Crossref

In June 2022, we wrote a blog post “Rethinking staff travel, meetings, and events” outlining our new approach to staff travel, meetings, and events with the goal of not going back to ‘normal’ after the pandemic. We took into account three key areas: The environment and climate change Inclusion Work/life balance We are aware that many of our members are also interested in minimizing their impacts on the environment, and we are overdue for an update on meeting our own commitments, so here goes our summary for the year 2023!

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Documentation

XSD schema quick reference

We support additional schema (not listed here) for legacy purposes.

Deposit schema

Used for registering and updating DOI metadata records:

SchemaPurposeStatusFurther info
grant_id0.1.1.xsdgrant metadatarecommendeddocumentation
crossref5.3.1.xsdfull metadata depositsrecommendeddocumentation
crossref4.8.1.xsdfull metadata depositsrecommendeddocumentation
crossref4.4.2.xsdfull metadata depositsavailabledocumentation
AccessIndicators.xsdlicense dataimported
relations.xsdrelationships between DOIs and other identifiersimported
clinicaltrials.xsdrelationships between publications that report on a clinical trialimported
doi_resources4.4.2.xsdused to append or update specific sets of metadata to an existing recordrecommendeddocumentation

Query schema

Used for formatting XML queries:

SchemaPurposeFurther info
Crossref_query_input2.0.xsdused to input XML queries to the systemdocumentation

Metadata retrieval schema

Used for retrieving our metadata:

SchemaPurposeFurther info
crossref_query_output2.0.xsdreturns query results in xsd_xml format, used for Cited-by resultsdocumentation
crossref_query_output3.0.xsdreturns query results in UNIXSD formatdocumentation
unixref1.1.xsdreturns query results in the UNIXML format, also used to support the data delivered by our OAI-PMH servicedocumentation
unixref1.0.xsdreturns query results in the UNIXML format for some older content, also used to support the data delivered by our OAI-PMH servicedocumentation
crossref_output3.0.1.xsdused to support data files generated for bulk data distributiondocumentation
OAI-PMH.cr.xsdaccommodates differences between Crossref’s OAI-PMH implementation and the published Open Archives OAI 2.0 schemadocumentation

Page owner: Patricia Feeney   |   Last updated 2021-October-05