After success of any new concept a group of community starts criticising it. Bitcoin is the fastest growing cryptocurrency among 1000 and more cryptocurrencies currently operating in the world. It has started its journey from $0 and now reached $8000. Every year bitcoin raised gradually. Its limited supply and growing demand is helping its price rising. Firstly some people called bitcoin as a internet fraud, now they are saying it as a bubble. After seeing bitcoins usefulness and its strong security system, many countries are planning to introduce their own cryptocurrency. We know there are some drawbacks or loopholes in bitcoins. But because its price is rising with great pace, we cannot call it a bubble.