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RFC 9562, "Universally Unique IDentifiers (UUIDs)", May 2024

Source of RFC: uuidrev (art)
See Also: RFC 9562 w/ inline errata

Errata ID: 7955
Status: Verified
Type: Technical
Publication Format(s) : PDF, HTML
Reported By: Gordon Garmaise
Date Reported: 2024-05-24
Verifier Name: Orie Steele
Date Verified: 2024-05-29

Section 5.1 says: 

time_high:
    The least significant 12 bits from the 60-bit starting timestamp.
    Occupies bits 52 through 63 (octets 6-7).

It should say:

time_high:
    The most significant 12 bits from the 60-bit starting timestamp.
    Occupies bits 52 through 63 (octets 6-7).

Notes:

The original text has the least significant 12 bits from the 60-bit starting timestamp duplicated in the UUID. Once as the least significant 12 bits of time_low and again as time_high. The most significant 12 bits of the starting timestamp are omitted from the UUID.

The corrected text gives the self-evident intention of the committee.

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