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UUID Format Update

The information below is for an old version of the document.
Document Type
This is an older version of an Internet-Draft whose latest revision state is "Replaced".
Expired & archived
Author Brad Peabody
Last updated 2020-08-27 (Latest revision 2020-02-24)
Replaced by draft-ietf-uuidrev-rfc4122bis, draft-ietf-uuidrev-rfc4122bis
RFC stream (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document presents a new UUID format (version 6) which is suited for use as a database key. A common case for modern applications is to create a unique identifier to be used as a primary key in a database table that is ordered by creation time, difficult to guess and has a compact text format. None of the existing UUID versions fulfill each of these requirements. This document is a proposal to update RFC4122 with a new UUID version that addresses these concerns.


Brad Peabody

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)