Crossref was created back in 2000 by 12 forward-thinking scholarly publishers from North America and Europe, and by 2002, these members had registered 4 million DOI records. At the time of writing, we have over 23,600 members in 164 different countries. Half of our members are based in Asia, and 35% are universities or scholar-led. These members have registered over 176 million open metadata records with DOIs (as of today). What a difference 25 years makes!
In our 25th anniversary year, I thought it would be time to take a look at how we got here. And so—hold tight—we’re going to go on an adventure through space and time1, stopping every 5 years through Crossref history to check in on our members. And we’re going to see some really interesting changes over the years.
The Frankfurt Book Fair is the largest book fair in the world, and therefore a key event on our calendar. Held annually in Frankfurt, Germany, the 77th Frankfurt Book Fair (October 15–19, 2025) saw 118,000 trade visitors and 120,000 private visitors from 131 countries. The Crossref booth was located, as usual, in Hall 4.0 where all the stands with information about academic publishing can be found. Four Crossref colleagues attended the Book Fair this year, and in this blog post, you can read more about their meetings, experiences, and plans.
TL;DR. Metadata Manager will be retired at the end of 2025. Over the past four years, we have been developing a new helper tool to replace it, and that tool has now reached a stage of maturity that means we will be able to switch off Metadata Manager by the end of the year.
Our REST API makes all of the metadata we hold publicly available. It receives the majority of our API traffic, with around 1 billion hits per month. It’s one of the key ways that we fulfil our mission to make research objects easy to find, cite, link, assess, and reuse. From 1 December 2025, we will be revising the rate limits for the public and polite pools of the REST API to ensure that we can maintain a stable and reliable system, and that metadata is freely available to everyone.
Our LIVE Annual Meeting is back in North America for the first time since 2015, and with just 10 days to go, there’s a lot going on in preparation. As you’d expect with a How good is your metadata? theme—the two-days will be entirely devoted to the subject of metadata—because it touches everything we do, and everything that publishers, hosting platforms, funders, researchers, and librarians do. Oh, and it’s actually super awesome too—and occasionally fun.
Metadata is what is used to describe the story of research: its origin, its contributors, its attention, and its relationships with other objects. The more machines start to do what humans cannot—parse millions of files through multiple views—the more we see what connections are missing, and the more we start to understand the opportunities that better metadata could offer.
We love metadata so much that we’re producing an 8-foot-high depiction of the ‘perfect’ record, in both XML and JSON, for people to gape at and annotate in person. Sneak preview:
The perfect metadata record is eight feet tall.
SchemaSchemer
Both days feature plenary-style talks, insights from ourselves and guests who will regale us with tales of metadata woes and wonders.
Lisa will be there at the end of Day 1 to update everyone on some recent and potential governance changes, and—the reason we started these gatherings—to reveal the results of our 2018 board election, the second contested election we’ve held, and already with twice the voters from 2017.
Our amazing guest speakers are too brilliant and too experienced to highlight in just one blog. But check out the LIVE18 schedule to see what they’ll be talking about:
Patricia Cruse, DataCite
Ravit David, University of Toronto
Clare Dean, Metadata 2020
Paul Dlug, American Physical Society
Kristen Fisher Ratan, CoKo Foundation
Stefanie Haustein, University of Ottawa
Bianca Kramer, Utrecht University
Graham Nott, Freelance developer (eLife/JATS)
Jodi Schneider, University of Urbana-Champaign
Shelley Stall, American Geophysical Union
We’ll be taking over the entire second floor of the Toronto Reference Library, whose three rooms will house a bunch of conversational sessions as well as some more formal talks:
Rally is the main room where we’ll have the plenary-style talks, a corner for Unscheduled Maintenance offering live support for your questions about billing or tech for Ryan, Shayn, Isaac, Jason, Chuck, & Mike. Running down the whole left side of this room is also the You-are-Crossref wall where the community will showcase their work with metadata through posters - feel free to bring one along and find Patricia to get the sticky tack.
The LIVE Lounge is where you can eat, drink, rest, and chat and where you’ll likely find Rosa as she laises between the caterers, the venue, AV, and all of us. The Lounge is also where we’ll gather for much-needed post-election refreshments at the end of Tuesday.
The Bigger Ambitions Room is where a lot of the Unplugged sessions will take place. This room will feature three separate stations:
R&D & Product where you can chat with Geoffrey, Esha, Jennifer L, Patrick, and Christine about your big ideas for us, and what we’re working on already.
Metadata discussions and annotations of the perfect record (previewed above) with Patricia, together with space to ideate around metadata principles.
Uses and users of metadata where Jennifer K will help us understand just how far Crossref metadata can reach, and who and what people are doing with it.
We cannot wait to show you what else we have planned :-)
For those of you not able to attend, recordings of the presentations will be made available on the event page directly soon after.
