Digitale Auteur Identifier (DAI)

Institutions use a range of different systems to store information about research. However, researchers prefer to see all this information presented together. Using a unique number known as a Digital Author Identifier (DAI), researchers can compile an overview of their own research results.

Unique national researcher number

The Digital Author Identifier (DAI) is a unique national number assigned to individual researchers employed at Dutch universities and research institutes. The DAI is the only independent (non-commercial) identification number for Dutch researchers. SURF developed the DAI in cooperation with OCLC PICA, which maintains all DAIs in the Dutch author-name thesaurus (Nationale Thesaurus Auteursnamen, NTA). 

The DAI in practice

The DAI groups various ways of writing an author’s name and distinguishes between authors with the same name. The DAI has a range of uses. It offers a simple means of compiling an author portfolio, even if the author has worked at multiple institutions. Publications issued under maiden and married names are also shown together. 

Integrated access to information

The NARCIS research portal was developed with a NARCIS widget that presents lists of publications based on the DAI. Publications can then be retrieved from the repositories of different Dutch academic institutions. Thanks to the DAI, information from diverse repositories can be presented in an integrated fashion. 

Other author identifiers

The DAI is linked to the national knowledge infrastructure. Though scientists also use other identifying numbers such as the ResearcherID and ScopusID, the DAI is the only independent (non-commercial) identification number for Dutch researchers. The DAI conforms to the international ISNI standard

Personal DAI search and helpdesk

Researchers can search on their personal DAI in the NARCIS research portal. To learn how, see: Get DAI.

For questions about using and managing your DAI, please contact the DAI helpdesk (

Relevant publications

Latest modifications 12 Dec 2016

More information