cl-ksuid implements KSUIDs in Common Lisp. KSUIDs are short (20 byte or 27 base62 character) unique IDs composed of a 32-bit timestamp followed by 128 bits of randomness. Due to the timestamp, they are sortable by creation second. They are described further in A Brief History of the UUID.
KSUIDs may be created with
(make-instance 'ksuid); they can be printed to a character stream so long as
*print-readably* is nil; their bytes may be extracted with the
BYTES reader. Finally, a string may be parsed as a KSUID with