I really don't believe that Bitcoin is really banned or forbidden to the muslim, because of the Bitcoin volatility.
Yes, Bitcoin is like gambling because you are uncertain whether you are going to gain or going to loss some money, But I think this rules goes to investing and business as well, because as we all know, in the field of business, we can't really know whether we are going to gain or not, Or whether your earning from this business is really permanent, Like what happens to Boracay Island in the Philippines, Because as many of you know, the Island has been close for tourism for several months because of the rehabilitation of the island. And many of the business in the Boracay are going to be destroy because of this.