This is similar to how "numbers racket" lotteries in the early 20th century operated, so that players could trust that the outcome could not be rigged: https://

This is similar to how "numbers racket" lotteries in the early 20th century operated, so that players could trust that the outcome could not be rigged: https://en.wikipedia.org/wiki/Numbers_game#Gameplay https://en.wikipedia.org/wiki/Numbers_game#Gameplay (The film "Force of Evil" is about a plot to nevertheless rig the outcome.)