UUID Validator
Validate UUIDs and identify their version. Check format, extract timestamp from v1 UUIDs, and understand structure.
v1:Time-based (MAC address + timestamp)
v2:DCE Security (POSIX UID/GID)
v3:Name-based (MD5 hash)
v4:Random (most common)
v5:Name-based (SHA-1 hash)
v6:Reordered time-based
v7:Unix Epoch time-based
UUID Versions - Technical Details
UUIDs have different versions: v1 (timestamp + MAC), v3 (MD5 hash), v4 (random), v5 (SHA-1 hash), v6/v7 (sortable). v4 is most common for its randomness and simplicity.
Command-line Alternative
// UUID format: 8-4-4-4-12 hex digits\nxxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx\n\nM = version (1-7)\nN = variant (8, 9, a, b for RFC 4122)