00000000-0000-0000-0000-000000000000
Nil UUID
The all-zeros UUID defined by RFC 9562. Used as a placeholder "no UUID" value; seeing it stored usually means an unset field.
Similar magic numbers
| value | name | category |
|---|---|---|
| 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | Compucon-Singer embroidery design file | file-signature |
| 00 00 00 | High Efficiency Image Container (HEIC) | file-signature |
| 00 00 01 00 | Windows icon|printer spool file | file-signature |
| 00 00 02 00 | Windows cursor / QuattroPro spreadsheet | file-signature |
| 00 01 00 00 00 | TrueType font file | file-signature |