Generador de UUID

Version 1

Time-based UUID using MAC address

Version 3

Name-based UUID using MD5 hash

Version 4

Random UUID (most common)

Version 5

Name-based UUID using SHA-1 hash

Version 6

Time-ordered UUID (like v1 but sortable)

Version 7

Unix timestamp-based UUID

Nil/Empty UUID

Special null UUID (all zeros)