That's interesting. I thought the system was way more "low-tech", ie that the phyisical, printed receipt worked as a lottery ticket, and whoever holds it may be

That's interesting. I thought the system was way more "low-tech", ie that the phyisical, printed receipt worked as a lottery ticket, and whoever holds it may be the winner. I'm saddened to hear that it actually sounds like centralized, authenticated registration of all purchases.