The Identifier variable is the subject identifier, '101'. The namespace identifier is itself a UUID. Each node is assigned a single key called its "identifier" (ID). Z39.842005 Syntax for the Digital Object Identifier. A name in a namespace consists of a namespace identifier and a local name. Objects are identified by a unique integer identifier. Version-3 and version-5 UUIDs are generated by hashing a namespace identifier and name. A proposed solution is the use of a digital object identifier. Each asset is referenced with a universally unique identifier or "UUID". The DoD number is also known as the Electronic Data Interchange Personal Identifier (EDIPI). A compliant IPv6 subnet always uses addresses with 64 bits in the host identifier. UDID is an acronym for Unique Device Identifier. There is no network identifier or broadcast address for these networks. The file system, chunks and devices are all assigned a Universally Unique Identifier (UUID). Each SIM is internationally identified by its integrated circuit card identifier (ICCID).