UUID v7 stores a Unix millisecond timestamp in the leading bytes, which makes new IDs sort roughly by creation time while preserving random bits for uniqueness. It is useful for database keys, logs, events, queues, and systems where UUID v4 randomness causes poor index locality.
Generate batches locally, paste an existing UUID v7 to decode its embedded timestamp, and check whether a value is actually version 7 before using it in migration or debugging work.
Related tools: UUID Generator ยท ULID Generator