Namespace Universally Unique Identifier (UUID) for namebased UUIDs (as defined in IETF RFC 4122, clause 4.3).
The payload is a lower-case namespace, followed by a double colon, followed by the actual identifier, e.g. "isbn:978-3-16-148410-0". The value of the namespace of can be chosen by the user but a common Uniform Resource Name (URN) namespace is preferred.
Usage in OIDplus 1.0: Allows the mapping of Non-OID/DOI/UUID objects into the OID tree by creating OIDs inside a "auto generated arc". The "NS+ID" UUID is the second level in the auto generated arc.
Usage in OIDplus 2.0: Gives all objects (including OIDs) an alternative UUID-identifier (showed in the section "Alternative Identifiers"). Note: The auto generated OID also exists in OIDplus 2.0, but it is constructed using a 31-bit-hash of the systems public key as first level, and the 31-bit-hash of the NS+identifier in the second level. The 31-bit-hash allows to use the OID in software that is not compatible with 128-bit OIDs.