If UUIDv4 was all that ever existed, there would be no need to validate anything... | Hacker News

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		kijin on Oct 2, 2023 \| parent \| context \| favorite \| on: Goodbye integers, hello UUIDv7 If UUIDv4 was all that ever existed, there would be no need to validate anything apart of the fact that it's supposed to contain 32 hexadecimal characters. All other versions, including the new v7, attach meaning to certain bits of the identifier. That cat has been out of the bag for a long time, so now everyone needs to maintain code to ensure that some rogue node doesn't spew back-dated identifiers belonging to the wrong department.

hawski on Oct 2, 2023 | [–]

UUIDv4 attaches meaning to certain 6 or 7 bits (depending on a variant) of the identifier. UUIDv4 is a UUID after all.

groestl on Oct 2, 2023 | [–]

UUIDv4 also contains some bits with meaning. But joke's on them, I tend to even randomize the version bits and call it UUIDv0.

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