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.
Upload a File allows you to submit a single document from a variety of document types. From the Submit a document menu, click Upload a File, and the Upload a file form opens.
Under Destination Folder, choose the folder to which you wish to upload the file. Its Similarity Report will be added to the same folder.
Complete Author First Name, Author Last Name, and Document Title fields. If Document Title is left blank, the document’s filename will be used.
Click Choose File, and locate the file to upload. Use Add another file to add more files, up to a total of ten.
Click Upload to proceed with with uploading the selected document(s), or click Cancel to cancel the upload.
Zip file upload (v1)
iThenticate allows you to submit multiple documents from a variety of document types in a compressed zip file. The zip file may be up to approximately 100MB in size and contain up to 1,000 individual files. If the zip file exceeds either limit, it will be rejected. Check that your zip file contains only accepted file types, and no duplicate copies of the same file.
Click Zip File Upload from the Submit a document menu. Choose your Destination Folder from the drop-down. The Similarity Report for the file will also be found here.
The information you enter in the Author First Name and Author Last Name fields will be applied to all the documents in the zip file. You can manually change these once the document is uploaded to the folder.
Click Choose file, locate the zip file on your device, and click Upload.
The title of the each document in the zip files will be the default title of each submission.
Cut and paste (v1)
Use the cut and paste submission option to submit information from non-supported file types, or to submit only specific parts or areas of a document.
Only text can be submitted using this method - any graphics, graphs, images, and formatting are lost when pasting into the text submission box.
Click Cut & Paste from the Submit a document menu.
Choose your Destination Folder from the drop-down. The Similarity Report for the file will also be found here.
Complete the Author First Name, Author Last Name, and Document Title fields. If no title is given, the default title “Pasted Document” will be used.
Copy your desired text for checking, paste it into the Paste your document in the area below text box, and click Upload.
To view recent uploads, go to the Submit a document menu, click Recent Uploads, and you will see recent uploads listed in reverse chronological order (most recent first). Click the Date & Time header to see the uploads in chronological order (oldest first).
Edit document information (v1)
To edit a document’s information (title and author name), click the edit icon to the right of a document in a folder. You will see the Document Properties page. Edit the fields, and click Update to save your changes.
Page maintainer: Kathleen Luschek Last updated: 2020-May-19