Seitenhistorie

...

The CG-URN

The most important identifier is the so-called Culturegraph-URN (CG-URN). The CG-URN is based on the EKI or some other widely deployed (library) identifier schema, e. g. GW, VD16, VD17, LCCN, or OCLC-Number that is attached - with or wihout a prefix - to urn:nbn:de:eki-.

The CG-URN always identifies a bibliographic resource. It does not identify a bibliographic description. If the identifier the CG-URN is based on identifiers for a bibliographic resource – e.g. VD16 – then they identify the same resource. If, however, the identifier the CG-URN is based on identifiers for a bibliographic description – e. g. OCLC-Number – then the CG-URN still describes the bibliographic resource and does not identify the same thing as the identifier it's based on.
For a list of widely deployed identifier schemes, cf. Identifikation der Ressource oder des Datensatzes?

Example: The EKI GBVNLM003525147 is a common identifier for bibliographic records that describe the electronic publication " Society and individual in Renaissance Florence / Max Haller (2003)". The derived CG-URN urn:nbn:de:GBVNLM003525147 will identify the publication itself.