There are a lot of cryptocurrencies. Bitcoin is one of them. It's the best cryptocurrency. It's increasing it's business day by day. More and more peoples are using this coin and the number is increasing. Now a lot of new coins are launched. They are following bitcoin as there idle. The price of these coins are also increasing. The security system of these coins are also good. People are also using these coins. They are not used vastly. But I believe that they will be succeeded in future.