above ald explain so many.
maybe this topic can also go top topic and fixed it. as btc casino special on provable fair.
People need to understand how the hashing system works. Yes, we can prove whether a bitcoin casino is probably fair or not. Every system can be checked and it is a plus point for the casino if it is probably fair otherwise it'll be just a scam in the long run.
People should rather worry about being paid out without having been pestered for ID all the time just to void payment. I guess it is free because you can't argue with maths and figures so I would rather sorry about that.