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Latest IETF Draft:

Internet-Draft draft-davis-uuidrev-uuid-long-00.txt is now available.

   Title:   Longer Universally Unique IDentifiers (UUIDs)
   Author:  Kyzer R. Davis
   Name:    draft-davis-uuidrev-uuid-long-00.txt
   Pages:   30
   Dates:   2026-04-10

Abstract:

   This document extends Universally Unique Identifiers (UUIDs) beyond
   128 bits to facilitate enhanced collision resistance and proper room
   for embedding additional data within a given UUID algorithm.

   These longer variable-length UUIDs ("UUID Long") leverage a
   previously unused variant bit "F" and feature a new sub-typing
   mechanism created to ensure there is enough space to define many
   future UUID algorithms within this new variant of UUIDs.

   This document updates RFC9562.

The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-davis-uuidrev-uuid-long/