This resource explains CrossRef’s role in assigning DOIs and fetching metadata from their database. Creators Max Planck Digital Library URL Type Readings/Reference Materials CPD Framework and Domain Academic and Research Librarians Library Data Management Understand the roles of Persistent Identifiers in data management and roles of organizations such as ORCID, Datacite, and Crossref. Copyright license Creative Commons: Attribution 3.0 Copyright holder Max Planck Digital Library Publisher/Source Max Planck Digital Library