Latest blog posts
Martyn Rittman
2025 January 29

Retraction Watch retractions now in the Crossref API

Retractions and corrections from Retraction Watch are now available in Crossref’s REST API. Back in September 2023, we announced the acquisition of the Retraction Watch database with an ongoing shared service. Since then, they have sent us regular updates, which are publicly available as a csv file. Our aim has always been to better integrate these retractions with our existing metadata, and today we’ve met that goal. This is the first time we have supplemented our metadata with a third-party data source.

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Ed Pentz
2025 January 28

POSI 2.0 feedback

As a provider of foundational open scholarly infrastructure, Crossref is an adopter of the Principles of Open Scholarly Infrastructure (POSI). In December 2024 we posted our updated POSI self-assessment. POSI provides an invaluable framework for transparency, accountability, susatinability and community alignment. There are 21 other POSI adopters. Together, we are now undertaking a public consultation on proposed revisions for a version 2.0 release of the principles, which would update the current version 1.

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Dominika Tkaczyk
2025 January 08

Metadata matching: beyond correctness

https://doi.org/10.13003/axeer1ee In our previous entry, we explained that thorough evaluation is key to understanding a matching strategy’s performance. While evaluation is what allows us to assess the correctness of matching, choosing the best matching strategy is, unfortunately, not as simple as selecting the one that yields the best matches. Instead, these decisions usually depend on weighing multiple factors based on your particular circumstances. This is true not only for metadata matching, but for many technical choices that require navigating trade-offs.

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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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Hello. We’re delighted that you’re using our API and we hope you find it useful.

Unfortunately, your usage also seems to be causing some problems with the API, which, in turn, is preventing other users from accessing it as well.

Therefore we have temporarily blocked your access. Please contact us at support@crossref.org. We’ll be happy to help you optimize your system to make the best, unobtrusive use of our API.

Also take a look at these API tips and the etiquette section of our API documentation for more tips on using the system ‘politely’.

Page owner: Isaac Farley   |   Last updated 2019-February-14