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Crossref’s Similarity Check service is used by our members to detect text overlap with previously published work that may indicate plagiarism of scholarly or professional works. Manuscripts can be checked against millions of publications from other participating Crossref members and general web content using the iThenticate text comparison software from Turnitin.

TL;DR: We no longer charge fees for members to participate in Crossmark, and we encourage all our members to register metadata about corrections and retractions - even if you can’t yet add the Crossmark button and pop-up box to your landing pages or PDFs.

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Update: Deadline extended to 23:59 (UTC) 13th March 2020.

Distributed Usage Logging (DUL) allows publishers to capture traditional usage activity related to their content that happens on sites other than their own so they can provide reports of “total usage”, for example to subscribing institutions, regardless of where that usage happens.

The Open Funder Registry plays a critical role in making sure that our members correctly identify the funding sources behind the research that they are publishing. It addresses a similar problem to the one that led to the creation of ORCID: researchers’ names are hard to disambiguate and are rarely unique; they get abbreviated, have spelling variations and change over time. The same is true of organizations. You don’t have to read all that many papers to see authors acknowledge funding from the US National Institutes of Health as NIH, National Institutes for Health, National Institute of Health, etc.

You can’t go far on this blog without reading about the importance of registering rich metadata. Over the past year we’ve been encouraging all of our members to review the metadata they are sending us and find out which gaps need filling by looking at their Participation Report.

The metadata elements that are tracked in Participation Reports are mostly beyond the standard bibliographic information that is used to identify a work. They are important because they provide context: they tell the reader how the research was funded, what license it’s published under, and more about its authors via links to their ORCID profiles. And while this metadata is all available through our APIs, we also display much of it to readers through our Crossmark service.

Metadata is at the heart of all our services. With a growing range of members participating in our community—often compiling or depositing metadata on behalf of each other—the need to educate and express obligations and best practice has increased. In addition, we’ve seen more and more researchers and tools making use of our APIs to harvest, analyze and re-purpose the metadata our members register, so we’ve been very aware of the need to be more explicit about what this metadata enables, why, how, and for whom.

Exciting news! We are getting very close to the beta release of a new tool to publicly show metadata coverage. As members register their content with us they also add additional information which gives context for other members and for services that help e.g. discovery or analytics.

Richer metadata makes content useful. Participation reports will give—for the first time—a clear picture for anyone to see the metadata Crossref has. This is data that’s long been available via our Public REST API, now visualized.

Over the past few months we have been adding to the metadata and functionality of our REST API, Crossref’s public machine interface for the metadata of all 90 million+ registered content items. Much of the work focused on a review and upgrade of the API’s code and architecture in order to better support its rapidly growing usage. But we have also extended the types of metadata that the API can deliver.

On September 1st we completed the final stage of the Crossmark v2.0 release and sent an email to all participating publishers containing instructions for upgrading. The first phase of v2.0 happened when we changed the design and layout of the Crossmark box back in May of this year. That allowed us to better display the growing set of additional metadata that our members are depositing, and saw the introduction of the Linked Clinical Trials feature.

TL;DR… In a few weeks, publishers can upgrade to the new and improved Crossmark 2.0 including a mobile-friendly pop-up box and new button. We will provide a new snippet of code for your landing pages, and we’ll support version v1.5 until March 2017. We recently revealed a new look for the Crossmark box, bringing it up-to-date in design and offering extra space for more metadata. The new box pulls all of a publication’s Crossmark metadata into the same space, so readers no longer have to click between tabs.