Section 14 of the official rules says that you can write for a list of winners. https://www.withyotta.com/official-rules

Does that mean that one could essentially get a list of your customers (that won in a particular week) if someone requests the winners every week? Over time one could figure out about how much each customer has in their savings account.

What information is released on the winners list? I'm not sure if I'd be willing to sign up for an account where my personal information would be released publicly if I "won" a 10 cent prize.