thx for explaining. I am afraid I cant help you with provably fair. but 12 hours sound a lot for a player who is looking for a fast decision

why woudnt it work in real time to give the game creator as soon a player puts his coins against him to change his first choice? is there a sound that the game creator will be informed when a challenger puts his coins against him?

and I fully agree that those games need to be 100% provably fair

good luck