A persistent identifier (short: PID) is a unique string assigned to a digital resource. It enables a persistent access, even when the resource is moved to another storage location. In addition, PIDs provide the possibilty to be enriched with metadata describing the identified resource. To assign a PID to a digital resource, it is necessary to approach a PID registration agency that controls the distribution and ensures the resolution of PIDs. One such a PID registration agency is ePIC, providing a REST interface to manage the PIDs. Since the GWDG is a founding member of ePIC, it provides comprehensive PID services. The contact information at GWDG is support@pidconsortium.eu. Another registration agency is DataCite, which allows its clients to assign digital identifiers (DOIs) to objects and provides various interfaces for interacting with its services. In the following, these two types of PIDs are described in more detail. If you are looking for information to receive PIDs for your publications, research data or other research objects at Göttingen Campus, please refer to our page on receiving DOIs/PIDs.

Digital Object Identifier (DOI)

A DOI is a permanent, resolvable reference to a digital resource, usually a research publication or a research data set. Since 2016, the SUB Göttingen as a member of DataCite is a DOI allocating agent in the Humanities in Germany. The service of finalizing contracts with data centres that store the digital content behind DOIs is offered by the eResearch Alliance. For the Göttingen Campus, this service is generally open to all disciplines. If you need a DOI to reference a publication or a data set, just send an email to info@eresearch.uni-goettingen.de briefly describing your case, and include your scientific domain and institute affiliation. We will then provide you with more details. Usually the DOI can be generated within 24 hours, provided that the resource is available at a permanent location and that sufficient information (metadata) for specifying the resource are provided.

Another option to receive a DOI is by submitting your publication or research data set to the UGOE repository Göttingen Research Online (GRO). You can register with GRO here and upload either your publication to the publication repository, or your data set to the data repository - or both. The two systems are closely linked, so that data sets used in publications (or publications referring to data sets) can be cross-referenced.


The ePIC Persistent Identifier Consortium for eResearch is an identifier system using the Handle infrastructure. Its focus is the registration of data in an early state of the scientific process, where lots of data is generated and has to become referable to collaborate with other scientific groups or communities, but where it is still unclear, which small part of the data will be cited or should be available for a long time period. But even in the case, that some data has to be cited, an ePIC PID is reliable, because its resolution is guaranteed. ePIC PIDs are flexible and well suited for references with a fine granularity, because they support fragments for special repository services, and also for data management purposes, because they provide data types as possible parameters in data management workflows.