If you want to find such a casino, the first thing you should check is whether such a casino has a license. It's not a ground rule but you can feel safer if stick to licensed casinos. I also read that Bitcoin-only casinos may happen not to have a gambling license as such a casino, which deals with cryptos only. This is where I learned it — So, keep that in your mind and don't look for names of the best online casinos but for their gambling documents.