Scholarly metadata, deposited by thousands of our members and made openly available can act as “trust signals” for the publications. It provides information that helps others in the community to verify and assess the integrity of the work. Despite having a central responsibility in ensuring the integrity of the work that they publish, editorial teams tend not be fully aware of the value of metadata for integrity of the scholarly record. How can we change that?
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.Â
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.
We operate on a budget of around $13 million (USD). About one-third of our revenue comes from annual dues (e.g., membership fees, subscriptions) and two-thirds from services (e.g., Content Registration, Similarly Check document checking). Our fees are set and reviewed by the Membership & Fees committee, which includes our staff, board, and community members. This group also created a set of fee principles which were approved by the board in 2019.
About 80% of our expenses are related to people - staff, benefits, and contracted support. 20% of our costs are everything else - hosting costs, licensing fees, events, and costs to do business like banking fees and insurance.
Each year we strive to generate a small operating net and have been able to do so nearly every year.
We also maintain a reserve fund to support long-term sustainability. We periodically report on our progress towards fulfilling the Principles of Open Scholarly Infrastructure: 2020, 2022, 2024
Below is a look at how our operations have changed over time.
The majority of our revenue comes from members in smallest and largest tiers. We have seen the most growth in revenue from the smallest fee tier.F
Annual financial reporting
As a not-for-profit, we are tax-exempt, and to maintain that status, we undergo a financial audit each year by an independent accounting firm. Our auditors prepare our Form 990, which the US IRS requires and is made publicly available. It gives an overview of what we do, how we are governed, and detailed financial information.
