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.
For Reference Linking, you need to find the existing DOIs for each work in your reference list, and then display the DOI for that item in your reference list.
Step 1: Find DOIs for the referenced works.
There are a few different options:
Crossref Reference Linking plugin in the OJS platform - if you’re using the OJS platform, make sure to add and enable the Crossref Reference Linking Plugin. The plugin will use the Crossref API to check against your plain-text references and locate possible DOIs. It will then display the reference lists with DOIs on the article landing page.
Simple Text Query - paste your reference lists into this web form, and it will return matches. This is a manual interface, and is suitable for low-volume querying.
XML API - submit XML formatted according to the query schema section to our system as individual requests or as a batch upload. This method requires API skills, and allows you significant control over your query execution and results.
Step 2: Display the DOIs in your reference lists.
Once you have retrieved the relevant DOIs, display them as URLs in your reference lists (following our DOI display guidelines).
Page maintainer: Maryna Kovalyova Last updated: 2025-August-15
