Abstract: A crypto currency is a digital currency mainly based on blockchain technology. The use of virtual currency has become widespread in many different systems in recent years. Virtual money is not fully controlled and regulated hence most of the countries have not admitted this currency in their economic activities. The project aims to understand the basic concepts of cryptocurrency, how they works , analyze the different type of crypto at market and the hardship they face . We will be also trying to use this knowledge to create a small prototype of a crypto system.