Our REST API makes all of the metadata we hold publicly available. It receives the majority of our API traffic, with around 1 billion hits per month. It’s one of the key ways that we fulfil our mission to make research objects easy to find, cite, link, assess, and reuse. From 1 December 2025, we will be revising the rate limits for the public and polite pools of the REST API to ensure that we can maintain a stable and reliable system, and that metadata is freely available to everyone.
Noyam Journals, based in Accra, Ghana, was recently recognised for the completeness of its metadata through the Crossref Metadata Award, part of our 25th anniversary celebrations. Noyam was one of six publishers worldwide to receive the award and stood out as a leader among members of our Global Equitable Membership (GEM) Program.
Wednesday 22nd October 2025—Crossref, the open scholarly infrastructure nonprofit, today releases an enhanced dashboard showing metadata coverage and individual organisations’ contributions to documenting the process and outputs of scientific research in the open. The tool helps research-performing, funding, and publishing organisations identify gaps in open research information, and provides supporting evidence for movements like the Barcelona Declaration for Open Research Information, which encourages more substantial commitment to stewarding and enriching the scholarly record through open metadata.
Welcome back to our series of case studies of research funders using the Grant Linking System. In this interview, I talk with Cátia Laranjeira, PTCRIS Program Manager at FCCN|FCT, Portugal’s main public funding agency, about the agency’s approach to metadata, persistent identifiers, Open Science and Open Infrastructure.
With a holistic approach to the management, production and access to information on science, FCCN|FCT’s decision to implement the Grant Linking System within their processes was not simply a technical upgrade, but a coordinated effort to continue building a strong culture of openness. With the mantra “register once, reuse always”, FCCN|FCT efforts to embrace open funding metadata was only logical.
To work out which version you’re on, take a look at the website address that you use to access iThenticate. If you go to ithenticate.com then you are using v1. If you use a bespoke URL, https://crossref-[your member ID].turnitin.com/ then you are using iThenticate 2.0.
When your organisation signs up for Similarity Check, a central contact at your organisation will become your Similarity Check account administrator. They will set up all the users on your account.
When your administrator adds you as a user, you’ll receive an email from noreply@ithenticate.com with the subject line “Account Created” containing a username and a single-use password. You may only log in once with the single-use password, and you must change it the first time you log in.
Log in to your user account (v1)
Start from the link in the invitation email from noreply@ithenticate.com with the subject line “Account Created” and click Login
Enter your username and single-use password
Click to agree to the terms of the end-user license agreement. These terms govern your personal use of the service. They’re separate from the central Similarity Check service agreement that your organisation has agreed to.
To change your email address, remove your current address from the ​Email​ field, enter your new email in the same field, and click ​Update Profile​ to save.
To change your password, enter a new password in the Change Password field, repeat it in the Confirm Password field, and click ​Update Profile​ to save.
Find your way around for users (v1)
In the main navigation bar at the top of the screen, you will see several tabs:
Folders: this is the main area of iThenticate, where you upload, manage, and view documents for checking
