Latest blog posts
Martyn Rittman
2024 November 15

Research Integrity Roundtable 2024

For the third year in a row, Crossref hosted a roundtable on research integrity prior to the Frankfurt book fair. This year the event looked at Crossmark, our tool to display retractions and other post-publication updates to readers. Since the start of 2024, we have been carrying out a consultation on Crossmark, gathering feedback and input from a range of members. The roundtable discussion was a chance to check and refine some of the conclusions we’ve come to, and gather more suggestions on the way forward.

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Dominika Tkaczyk
2024 November 06

How good is your matching?

In our previous blog post in this series, we explained why no metadata matching strategy can return perfect results. Thankfully, however, this does not mean that it’s impossible to know anything about the quality of matching. Indeed, we can (and should!) measure how close (or far) we are from achieving perfection with our matching. Read on to learn how this can be done! How about we start with a quiz? Imagine a database of scholarly metadata that needs to be enriched with identifiers, such as ORCIDs or ROR IDs.

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Kornelia Korzec
2024 October 28

Update on the Resourcing Crossref for Future Sustainability research

We’re in year two of the Resourcing Crossref for Future Sustainability (RCFS) research. This report provides an update on progress to date, specifically on research we’ve conducted to better understand the impact of our fees and possible changes. Crossref is in a good financial position with our current fees, which haven’t increased in 20 years. This project is seeking to future-proof our fees by: Making fees more equitable Simplifying our complex fee schedule Rebalancing revenue sources In order to review all aspects of our fees, we’ve planned five projects to look into specific aspects of our current fees that may need to change to achieve the goals above.

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Lucy Ofiesh
2024 September 24

Meet the candidates and vote in our 2024 Board elections

On behalf of the Nominating Committee, I’m pleased to share the slate of candidates for the 2024 board election. Each year we do an open call for board interest. This year, the Nominating Committee received 53 submissions from members worldwide to fill four open board seats. We maintain a balanced board of 8 large member seats and 8 small member seats. Size is determined based on the organization’s membership tier (small members fall in the $0-$1,650 tiers and large members in the $3,900 - $50,000 tiers).

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Documentation

How to participate in Similarity Check

When you apply for the Similarity Check service, you must ensure you have full-text URLs for Similarity Check present in the metadata of at least 90% of your registered articles (across all your journal prefixes). These URLs will be used by Turnitin to index your content into the iThenticate database, making you eligible for reduced-rate access to iThenticate through the Similarity Check service.

The URLs must point directly to your full-text PDF, HTML, or plain text content, and you must continue to include these links in all future deposits. If you aren’t registering any journal articles and instead are registering other record types (such as conference papers), please contact us.

The metadata you deposit with Crossref is available to be searched and retrieved by everyone, and this includes Similarity Check full-text URLs. If your content is paywalled, please make sure that your Similarity Check URLs prompt an authentication step before allowing a user to access full-text content. You’ll also need to ensure that your hosting provider has safelisted the Turnitin IP range to ensure that the content is available for them to index.

Where should Similarity Check URLs point?

These URLs will be used to index your content, so they need to resolve directly to the content itself - the full-text PDF, HTML or plain text content. PDFs in a frame can’t be indexed, and neither can content that’s wrapped in javascript. The URL must point directly to the location of the full-text content, and not to the article landing page (even if the content is available via a link on that page). Most members supply the PDF download link.

Learn more about how to include these full-text URLs in your new deposits or add them to content that you’ve previously registered.

Safelisting the Turnitin IP address

Once you’ve added your Similarity Check URLs to your metadata, the Turnitin indexing crawler will index your content. If your content is openly available, the crawler will be able to access and index your content without further work on your side. But if your content is protected by authentication, you may need to safelist Turnitin’s IP address and UserAgent so they can do this.

If your content is protected by authentication, please ask your hosting provider to safelist the following IP address and UserAgent:

IP address range: 199.47.87.132 to 199.47.87.135 AND 199.47.82.0 to 199.47.82.15. UserAgent: TurnitinBot/ContentIngest (http://www.turnitin.com/robot/crawlerinfo.html)

Page owner: Kathleen Luschek   |   Last updated 2020-May-19