RFC4122 - A Universally Unique IDentifier (UUID) URN Namespace

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Data sheet for A Universally Unique IDentifier (UUID) URN Namespace

Title	A Universally Unique IDentifier (UUID) URN Namespace
Acronym	UUID
Version	2005
Document Number	RFC4122
Release Date	July 2005
Reference	https://tools.ietf.org/html/rfc4122

Note: The following is an excerpt from the official IETF RFC. It is provided here as a convenience and is not authoritative. Refer to the original document as the authoritative reference.

Abstract

This specification defines a Uniform Resource Name namespace for UUIDs (Universally Unique IDentifier), also known as GUIDs (Globally Unique IDentifier). A UUID is 128 bits long, and can guarantee uniqueness across space and time. UUIDs were originally used in the Apollo Network Computing System and later in the Open Software Foundation's (OSF) Distributed Computing Environment (DCE), and then in Microsoft Windows platforms.This specification is derived from the DCE specification with the kind permission of the OSF (now known as The Open Group). Information from earlier versions of the DCE specification have been incorporated into this document.