A Currency has three functions. First, it serves as a means of payment, in the form of notes and coins. Second, it serves as a unit of account used to express prices, saving, mortgages, etc. Third, it serves to preserve value in savings. Bitcoins can be referred currency considering the above facts. Since it is available digitally, it is easier to use in Online Casinos. In Future, Bitcoin can even be used as a legal tender in Global Markets.