Why dont you add a UUID to every item drop, so if anyone dupes an item you suddenly have two identical UUIDs in the system. Might even be enough to do this only during active play sessions to be able to identify duped items and notify the server of a dupe.
It’s a good thought, but it would nearly double our item data which has performance and cost concerns. Then to ensure it’s actually unique across all those records would probably entail the identifiers being prepended by the actual character ID to ensure we don’t have to do a comparison check across all records(that would be a crazy operation to perform each time an item is generated)… making it ~triple the data. Our engineering team may have a more optimal way than that, but either way it would greatly expand data storage, and keeping individual item data as condensed as possible is very important.