The problem with a site not having a "provably fair for investors" system is the fake whale, or fake shrimp (salami slicing their own profits). There is currently no known or decent system for fast or speedy dice games that will work. The casino can have their own "in-house" players that look like normal players to everyone else, but have the advantage of knowing the secrets needed to win. There is no way to reliably detect that since they can always just play as close to the house edge as possible and have just a tiny little bit more profit than they should have, no one will notice.
sorry if my question sounds stupid

but I will not be shy to ask cause I am very interested to see a solution for this problem
owner knows the secret and could cheat.......is there no way that no one will know the secret or will have access to the secret but only after the come out?
something like a multi password like multisig