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

Schema versions

We support several versions of our metadata input and grants schema, as well as XML Schema Definition (XSD) schema for looking up and retrieving DOIs and metadata. A quick reference is available. The metadata input schema is used to deposit metadata for most record types, except Grants, which have their own schema.

We currently support versions 4.3.0 to 5.3.1 of our main metadata schema. If you are beginning to register your metadata with Crossref you should use the most recent version (currently 5.3.1) to ensure you are able to take advantage of all metadata deposit options. We also have a resource-only deposit schema that may be used to add some pieces of metadata to an existing record.

Metadata input schema versioning

All supported schema are available in our Schema GitLab repository. Versions 4.3.0 - 4.8.1 of our schema are backwards-compatible with the exception of deposits for standards, which may only be deposited with version 4.3.6 and above.

We are now incrementing our input schema version numbers with each change for all updates after version 4.4.2. Note that addtional schema versions are available via gitlab (5.0 - 5.2 for example) but are not documented for use as subsequent versions were released at the same time (5.3.1).

Recommended metadata deposit schema

Recommended resource-only deposit schema

Also supported

  • crossref4.8.1.xsd: changes include support for ISBN that begin with 979, changes to the regex for the email_address field, relaxed regex for given_name to allow numbers, and schema refactoring.
  • crossref4.4.2.xsd: adds support for pending publication, distributed usage logging (DUL), multiple dissertation authors, abstracts for all record types, support for JATS 1.2 abstracts, and adds acceptance_date element to journal article, book, book chapter, and conference papers
  • crossref4.4.1.xsd: adds support for peer reviews
  • crossref4.4.0.xsd: adds support for posted content (includes preprints)
  • crossref4.3.7.xsd: adds support for linked clinical trials, journal deposits without ISSNs
  • crossref4.3.6.xsd: expanded support for standards
  • crossref4.3.5.xsd: supports relationships between DOIs and other objects
  • crossref4.3.4.xsd: add archive_location option, change name element to depositor_name
  • crossref4.3.3.xsd: modifications for standards
  • crossref4.3.2.xsd: adds support for license metadata
  • crossref4.3.1.xsd: adds support for Crossmark, funding data, ORCID iDs
  • crossref4.3.0.xsd: revisions to handling of books
  • doi_resources4.3.6.xsd
  • doi_resources4.3.5.xsd
  • doi_resources4.3.4.xsd
  • doi_resources4.3.2.xsd
  • doi_resources4.3.0.xsd

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