How will the winners be chosen?is it a program that randomises it or are they picked by hand?
I think people would be a lot more relaxed if it would be done in a live stream.
Each ticket gets a number. A list is then made and people that bought ticket get they're numbers. Then in a live stream a program picks out the numbers random. once a number is picked is it erased from the list in the program so it can't win again. I think would be the most fair way to do it public. Any doubt is erased then.