PID/DOI Service

A persistent identifier (PID) is a unique and permanent digital reference that makes it possible to find and reuse digital material. PIDs are used to reference digital objects such as documents, web pages, and files.

Every dataset that is deposited and made accessible with SND has a specific type of persistent identifier called a Digital Object Identifier (DOI). This helps ensure correct citation of the research and to show which version of the data has been used. In order to publish material based on these datasets in a journal, it is often a requirement that the research data are accessible and equipped with a PID.

Read the SND PID Policy.

The SND DataCite membershipDataCite logotype

As a member of DataCite, SND is able to provide a DOI prefix to Swedish authorities and institutions that work with preserving and making research data accessible. This is regulated in the DataCite Business Models Principles (Chapter 4). As the process of assigning a DOI requires a certain amount of metadata for every object, it may, depending on the data type, be more appropriate to use another type of PID. Other common types of PIDs are available through ePIC (handle), KB (urn:nbn) (in Swedish only), and CDL (ARK).

Here you can learn more about the SND membership in DataCite.

Applying for a DOI prefix from SND

If you are interested in applying for a DOI prefix, please contact us at for more information and instructions.

DataCite: Statistics, collaboration, and development projects

The DataCite website provides access to, among other things, statistics and API documentation. A collaboration with Thomson Reuters means that DataCite is now also included in the Data Citation Index. A partnership between ORCID and DataCite was built within the framework of the ODIN Project, and Project Thor now follows on from the ODIN Project. The DataCite service also includes, a global registry of research data repositories and their equivalents.