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or ULIDs or any other partially sortable ids.

ULID are not necessarily sortable, just UUIDs consensed in a shorter string by using more characters than 0-9A-F

ULID = Unique Lexicographically sortable IDentifier ;-)

ULIDs are sorta the opposite of the HMAC method, where you can't query for the nth ID, but you can sort the IDs.