It is good that the booking.com online hotel reservation is already accepting and using 20 different crypto currency as a paymeny to their online reservation fee, this indicates that the cryptocurrency is widely spreading all over the world in which it is becoming more reliable due to the help of different kinds of business like this and also people who are supporting cryptocurrency. I believe that someday this cryptocurrency will be used all over the world so that our currency becomes more digitalized and more convenient to used.