Concept

Crossref

Résumé
Crossref (formerly styled CrossRef) is a nonprofit open digital infrastructure organisation for the global scholarly research community. Uniquely and persistently recording and connecting knowledge through open metadata and identifiers for all research objects such as grants and articles. It is the largest digital object identifier (DOI) Registration Agency of the International DOI Foundation. It has 19,000 members from 150 countries representing publishers, libraries, research institutions, and funders and was launched in early 2000 as a cooperative effort among publishers to enable persistent cross-platform citation linking in online academic journals. As of July 2023, Crossref identifies and connects 150 million records of metadata about research objects made openly available for reuse without restriction. They facilitate an average of 1.1 billion DOI resolutions (clicks of a DOI link) every month, and they see 1 billion queries of the metadata every month. Crossref is a nonprofit association of approximately 19,000 voting members made up of 6,000 societies and publishers, including both commercial and nonprofit organizations, 6,500 academic and research institutions, research funders, museums, repositories, government agencies and NGOs. Crossref includes members with varied business models, including those with both open access and subscription policies. Crossref does not provide a database of fulltext scientific content. Rather, it facilitates the links among distributed content hosted at other sites through the use of open metadata and persistent identifiers. Crossref interlinks millions of items from a variety of content types, including journals, books, conference proceedings, research grants, working papers, technical reports, and data sets. Linked content includes materials from scientific, technical, and medical (STM), and social sciences and humanities (SSH) disciplines. Crossref's sustainability model includes an annual membership fee, a per-record registration fee, and additional service fees, while all the metadata remains open without restriction.
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