EXA40
— Prove data is real —
Phantom Returns
Check every refund is a genuine, first-time, in-scheme container.
The problem to solve
A deposit on every drinks container is an open invitation to industrial fraud: redeeming the same container twice, importing non-scheme containers to claim a deposit that was never paid in, counterfeits, and reverse-vending-machine replay. These are documented patterns, not hypothetical: one container replayed over and over, and deposit-free containers carried across borders to be redeemed where no deposit was paid. The usual answer is a next-day batch audit — after the cash has already gone out.
The solution it enables
An application built on Polymonial checks each return at the return point itself: Polymonial verifies the container's producer signature, and the application rejects anything seen before, out-of-scheme containers, and producers whose keys are not certified. Fraud is caught before the refund is paid, not after.
What it looks like
At a supermarket reverse-vending machine, replay one bottle again and again: it refunds exactly once, every later attempt is rejected, nothing extra is paid. Present a container from another country's scheme: rejected at the border by its jurisdiction tag. Forge a container: the signature does not verify, rejected. A valid signature from a producer who is not in the certified registry: rejected.
“One bottle, replayed again and again: exactly one refund.”
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