A Universally Unique IDentifier (UUID) URN Namespace2021/8/26 6:50:00 https://www.ietf.org/rfc/rfc4122.txt
〈RFC 4122 - A Universally Unique IDentifier (UUID) URN Namespace〉2022/9/28 9:31:00 https://datatracker.ietf.org/doc/rfc4122/ RFC 4122 - URN名前空間──普遍一意識別子 (UUID) urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6 (規格票にある例)