The digitalization of the economy has also affected currency exchange. Currency has become digital. The introduction of the article shows a historical retrospective of the development of currency relations. It is shown that the current crisis in the currency sphere has led to an aggravation of the international situation. It is necessary to introduce a new world economic order. Digital currency is more flexible and stable compared to paper currency. Russia has decided to introduce a digital ruble, which will be issued and accounted for on the Bank of Russia platform. To introduce the digital ruble, a two-tier model was adopted. The Bank of Russia creates wallets and transfers them to financial institutions. They, in turn, pass them on to clients. A unified digital ruble platform will ensure the speed of transactions and make the movement of the digital ruble transparent and safe. The digital ruble is under the full control of the Bank of Russia. A completely different approach to functioning is manifested in cryptocurrencies. The circulation of cryptocurrencies is based on blockchain technology. In this technology, all participants in the process have equal rights and the same blocks of information. The dispersion of information guarantees its safety and resistance to change. Any network participant can create currency (mine); to do this, it is necessary to solve a certain computer problem. Whoever solves it first will issue the next unit of currency. So, the article presents two different technologies for creating digital currencies. The first technology involves centralizing foreign exchange transactions on one platform. The Bank of Russia guarantees the integrity and safety of the currency. Operations with the second currency can be performed by any network participant. The security of the currency is guaranteed by its dispersion among all network participants. The first currency is under the complete control of the state, the second cannot be controlled by anyone.