Cyrptocurrency is a new technology that was created in 2008. and has become famous over the last few years. Cyrptocurrency has become famous for their chance of making money. Because of its decentralized network of crypto network, it rewards with its own currency to anyone who invests their hardware and electrical energy in network maintenance. At the beginning of 2018, crypt valued began to lose value after reaching its peak, which many considered unrealistic. It is hard to predict whether the cryptocurrencies will return to previous value again or stabilize at a lower boundary This work will not, however, address prediction of the price of cryptovalue, but will try to explain their operating principle. We will make a research how to enter the world of cryptocurrencies and the security of a regular user while using a new type of payment.