Crossref Ambassadors act as local points of contact, meeting editors, librarians, researchers, and institutions to help them navigate Crossref services and understand how strong metadata supports visibility, integrity, and trust in research. They explain how to participate in our rich network of connections between works, people, and institutions, in ways that make sense in their own contexts. And last year, being our 25th anniversary, Ambassadors also massively contributed to our celebrations!
We have renewed our partnership with DOAJ to focus on a new set of objectives that reflect both organisations’ commitment to improving sustainable and equitable services and infrastructure. This renewed collaboration focuses on improving the quality of scholarly metadata while expanding support for journals in low- and middle income- countries.
We have worked together since 2021, primarily to encourage the dissemination and use of scholarly research using online technologies, and regional and international networks, partners and communities. This partnership has helped to build local institutional capacity and sustainability within the global scholarly communication ecosystem. A continued partnership also reflects that we have a shared community; currently almost 90% of DOAJ journals are represented in Crossref.
With key milestones achieved in 2025, including the appointment of new Directors of Technology and Programs, a move to the cloud, and some key schema updates, we now have a firm foundation for our next challenge: a redesign of our core technical systems to make them more modern, robust, and easier to maintain and scale.
In an ongoing effort to make more of our operations transparent, we have decided to start sharing summaries of our board meetings on the blog. We already post our board resolutions, but the summaries will give a bit more information on what the board discusses that may or may not show up on the list of resolutions.
ROR IDs and Affiliations of authors can now be tracked in Participation Reports! Check your own Participation Report to see how many of your publications have author affiliations and ROR IDs in Crossref metadata. If you deposit metadata via XML, see our guide on Affiliations and ROR for instructions on how to include affiliations and ROR IDs in your metadata.
Crossref encourages our members to include ROR IDs in metadata in order to help make research organisation information clear and consistent as it is shared between systems. ROR IDs are essential to realize a rich and complete Research Nexus because they enable connections between research outputs and the organisations that support researchers.
“At Scholastica, we care about taking steps to enrich metadata â like adding ROR IDs, for example, on behalf of our customers, so they donât have to worry about the technical aspects of metadata collection or creation and can instead focus on maximizing the discovery benefits.” – Cory Schires, Co-founder and Chief Technology Officer, Scholastica
“If weâre talking about misconduct, then you might need to be able to contact the institution that the author is from. On an individual manuscript, it doesnât matter if thereâs no identifier â an address will do. But if you find some signal that is on manuscripts at scale, and youâve got thousands of them, well, you need an identifier. You canât go through them and try and search for every single one of those institutions.” – Adam Day, CEO, Clear Skies Ltd.
ROR IDs are specifically designed to be implemented in any system that captures institutional affiliations and to enable a richer networked research infrastructure. ROR IDs are interoperable with other organisation identifiers, including GRID (which provided the seed data that ROR launched with), the Open Funder Registry, ISNI, and Wikidata. ROR data is available under a CC0 Public Domain waiver and can be accessed at no cost via a public API and a data dump.
ROR is operated as a joint initiative by Crossref, DataCite, and the California Digital Library, and was launched with seed data from GRID in collaboration with Digital Science. These organisations have invested resources into building an open registry of research organisation identifiers that can be embedded in scholarly infrastructure to effectively link research to organisations. ROR is not a membership organisation (or an organisation at all!) and charges no fees for use of the registry or the API. Read more about ROR’s sustainability model.
Why ROR IDs are an important element of Crossref metadata
For a long time, Crossref only collected affiliation metadata as free-text strings, which made for ambiguity and incomplete data. An author affiliated with the University of California at Berkeley might give the name of the university in any of several common ways:
University of California, Berkeley
University of California at Berkeley
University of California Berkeley
UC Berkeley
Berkeley
And likely more âŚ
While it isnât too difficult for a human to guess that âUC Berkeley,â âUniversity of California, Berkeley,â and âUniversity of California at Berkeleyâ are all referring to the same university, a machine interpreting this information wouldnât necessarily make the same inference. If you are trying to easily find all of the publications associated with UC Berkeley, you would need to run and reconcile multiple searches at best, or, at worst, miss some data completely.
This is where an organisation identifier comes in: a single, unambiguous, standardized identifier that will always stay the same. For UC Berkeley, that would be https://ror.org/01an7q238.
In 2019, Crossref members indicated that the ability to associate research outputs with organisations in a clean and consistent fashion was one of their most desired improvements to Crossref metadata. In January of 2022, therefore, Crossref added support for ROR IDs in its metadata schema and APIs. Since then, more and more Crossref members have been including ROR IDs in DOI metadata.
Publishers and service providers can implement ROR in their systems so that submitting authors and co-authors can easily choose their affiliation from a ROR-powered list instead of typing in free text. Authors themselves do not have to provide a ROR ID or even know that a ROR ID is being collected. This affiliation information can then be sent to Crossref alongside other publication information.
Demo of collecting ROR IDs in a typeahead field
If the submission system you use does not yet support ROR, or if you don’t use a submission system, you’ll still be able to provide ROR IDs in your Crossref metadata. ROR IDs can be added to JATS XML, and Crossref helper tools will start to support the deposit of ROR IDs. There’s also an OpenRefine reconciler that can map your internal identifiers to ROR identifiers.
ROR IDs for affiliations stand to transform the usability of Crossref metadata. While itâs crucial to have IDs for affiliations, itâs equally important that the affiliation data can be easily used. The ROR dataset is CC0, so ROR IDs and associated affiliation data can be freely and openly used and reused without any restrictions.
The ROR IDs registered by members in their Crossref metadata are available via Crossrefâs open APIs so that they can be detected, analyzed, and reused by anyone interested in linking research outputs to research organisations. Examples include
Institutions who want to monitor and measure their research output by the articles their researchers have published
Funders who want to be able to discover and track the research and researchers they have supported
Academic librarians who want to find all of the publications associated with their campus
Journals who want to know where authors are affiliated so they can determine eligibility for institutionally sponsored publishing agreements
The inclusion of ROR IDs in Crossref metadata will eventually help all these entities make all these connections much more easily.
Get ready to ROR đŚ!
ROR is already working with publishers, funders and service providers who are integrating ROR in their systems, mapping their affiliation data to ROR IDs, and/or including ROR IDs in publication metadata. Libraries and institutional repositories are also beginning to build ROR into their systems and to send ROR IDs to Crossref in their metadata. See the growing list of active and in-progress ROR integrations for more stakeholders who are supporting ROR.
If you deposit metadata with Crossref via XML, see our guide on Affiliations and ROR for instructions on how to include author affiliations and ROR IDs.
For further information on how ROR IDs are supported in the Crossref metadata, you can take a look at this .xsd file (under the âinstitutionâ element) or in this journal article example XML. ROR also has some great help documentation for publishers and anyone else working with the ROR Registry.
