Latest blog posts
Dominika Tkaczyk
2026 March 30

DOI resolution and deposit outage on 17 March 2026

On 17 March 2026, we experienced an outage that affected DOI resolution for Crossref DOIs and the deposit of metadata records by Crossref members. In this summary, we outline what happened, the impact on our community, and the steps we are taking to strengthen our systems and processes as a result.

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Martyn Rittman
2026 March 24

Strengthening support for data citations and saying goodbye to Event Data

We’re excited to announce a new data citation API endpoint and are seeking your feedback. The new service makes existing data citation relationships in our metadata available, thereby surfacing this part of the research nexus. At the same time, we’ve decided that it’s time to move on from Event Data.

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Dominika Tkaczyk
2026 March 19

On metadata enrichment

Metadata is communication; it can tell a story about research and paint a picture for others to respond to and learn from, across the world and throughout the forthcoming generations. Metadata can feel technical with words like ‘infrastructure’ and ‘schema’, and sometimes, like tech in general, it comes with hyperbole. But metadata really is part art (storytelling and pictures) and part science (structured models and standards) with both aspects being equally important, and requiring people as well as systems. That necessary combination of human and machine involvement also makes metadata challenging.

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Martyn Rittman
2026 March 17

2026 public data file now available

Once a year we release all metadata records for content registered with Crossref in a public data file. This year’s version, containing nearly 180 million records, is now available. It includes metadata associated with all Crossref-registered DOIs in JSON-lines format.

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Lenny Teytelman

All of us making up the Crossref team

Meet the members, Part 2 (with protocols.io)

Christine Cormack Wood

Christine Cormack Wood, Lenny Teytelman – 2018 January 31

In IdentifiersMeet the Members - Perspectives

Second in our Meet the members blog series is Lenny Teytelman, co-founder and CEO of protocols.io, who gives us a bit of insight into his background and why he started protocols.io, what the future plans for protocols.io are, and how they use and benefit from being a Crossref member.

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DOI resolution and deposit outage on 17 March 2026

2026 March 30

Strengthening support for data citations and saying goodbye to Event Data

2026 March 24

On metadata enrichment

2026 March 19

2026 public data file now available

2026 March 17

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