DataCite is an internationally operating non-profit membership organization based in Hannover, Germany, and has been assigning Digital Object Identifiers (DOIs) for scientific results and resources since 2009. DataCite works primarily with scientific institutions worldwide that operate repositories and other publication services. With its foundation in 2009, the DataCite metadata schema established itself as the standard for describing research data publications and other research outputs. In its version 4.4, the DataCite metadata schema covers 28 different "Resource Types" and, with the integration of other PIDs such as the ORCID iD, ROR ID, etc., supports the unambiguous linking of research output using international standards. In addition, as a partner organization of directories, such as ROR and re3data, DataCite promotes the standardization of metadata and their schemas. Through its membership in working groups, including the German Initiative for Network Information DINI e. V. (DINI) and RDA, DataCite exerts direct influence on the design of global standards for metadata and information infrastructures.

Project contributor: Paul Vierkant

Homepage: https://datacite.org

The DNB has the task of collecting, permanently archiving, bibliographically recording and making available to the public all German and German-language publications from 1913 onwards, Germanica and translations published abroad, as well as the works of German-speaking emigrants. DNB is thus one of the largest providers of bibliographic metadata and services. One focus of its activities lies in the area of standardization; in particular, it is a leader in the work on rules and standards in the German-speaking world. With regard to PIDs, the DNB is active, among other things, as a provider for the namespace "urn:nbn:de", the German National Bibliography and Culturegraph, and as the operator of the Integrated Authority File (GND), which, with its nearly 10 million PIDs, represents an essential and established aggregation system. DNB coordinates the GND competence network (GND.network), is responsible for strategy development together with the GND committee, provides the GND platform as a centrally used infrastructure and working environment, and leads its further development. Thanks to these established structures of committees and working groups, the DNB can draw on a broad network of experts. These structures ensure the compatibility of the GND with the standards and practices of the various application groups.

DNB is also the head of the technology, development, and service areas of the German Digital Library (DDB).

Project contributor: Barbara Fischer

Homepage: https://www.dnb.de

The Helmholtz Open Science Office was established to support the cultural shift towards Open Science in the Helmholtz Association and to promote the visibility of Helmholtz in this field. For this purpose, the staff members of the Helmholtz Open Science Office are involved in national and international Open Science initiatives, such as the priority initiative "Digital Information" and DINI. In addition, the Helmholtz Open Science Office is involved in various projects, such as ORCID DE and re3data COREF23. The Helmholtz Open Science Office cooperates with internal Helmholtz structures, such as the Incubator Information & Data Science (HIDA), or the Helmholtz Metadata Collaboration (HMC). It is also a founding member of the German Reproducibility Network (GRN). Internationally, the Helmholtz Open Science Office is active, e.g. in RDA. Since 2005, the Helmholtz Open Science Office has been located at the Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, resulting in close cooperation. The GFZ was significantly involved in the STD-DOI project, from which DataCite emerged, and is co-initiator of the IGSN consortium for the allocation of the International Generic Sample Number (IGSN). The Helmholtz Open Science Office was involved in both contexts.

Project contibutors: Lena Messerschmidt and Antonia C. Schrader

Homepage: https://os.helmholtz.de

TIB is the German National Library of Science and Technology, Architecture, Chemistry, Computer Science, Mathematics and Physics, a member of the Leibniz Association and the university library for Leibniz Universität Hannover. It offers a growing service portfolio in the field of research data management and here in particular around PIDs in its PID Competence Center. TIB is the initiator and co-founder of DataCite and leads the world's largest DataCite-DOI consortium as well as the ORCID Germany consortium. In this capacity, it is the main contact and coordinator for most universities, colleges and non-university research institutions in Germany in the area of PID integration. TIB has initiated several projects for the further development of PIDs, including ConfIDent (DFG, since 2019) and the projects TAPIR (BMBF, 2019-2023) and OPTIMETA (BMBF, 2020-2023). It is also active in working groups on metadata optimization (including DataCite Metadata Working Group, ROR Advisory Group) and in the Open Research Knowledge Graph (ORKG) project. TIB is represented in several NFDI consortia, where it advocates PIDs as a core element for quality-assured research data management. In addition, Sören Auer, Director of TIB, is involved in the Commission for Research Information in Germany (KFiD) to promote the use of PIDs in the standardization of research information. Mr. Auer is also a member of the Information Infrastructure Council (RfII).

Project contributors: Felix Burger, Stephanie Hageman-Wilholt and Frauke Ziedorn

Homepage: https://www.tib.eu

Since 2004, Bielefeld University Library has been developing and productively operating the scientific search engine BASE with the aim of indexing OA content from publication infrastructures, especially repositories, as comprehensively as possible. The dynamically growing database allows both the implementation of new services and the analysis of relevant developments of publications on repositories worldwide. One example of this is the ORCID DE Monitor, which is based in part on BASE metadata. Furthermore, Bielefeld UB is involved in national and international initiatives for the standardization of metadata and vocabularies, including the DINI certificate for OA publication services, the OpenAIRE guidelines, and COAR-controlled vocabularies for repositories.

Project contributor: Jochen Schirrwagen

Homepage: https://www.uni-bielefeld.de/ub