Only uuid v3/v5. Anything is possible if that's what you want. But 128 (or 122) bits of random are usually what you want when you think of guid.
Most people format 128-bit random numbers into a UUID just so it's obvious at a glance what it is: a guid. Even if it's not technically a UUIDv4 because it doesn't have the magic bits.
Most people format 128-bit random numbers into a UUID just so it's obvious at a glance what it is: a guid. Even if it's not technically a UUIDv4 because it doesn't have the magic bits.