Cryptocurrency differs from traditional money, presented in the form of banknotes or coins, in that it has no physical manifestation. It exists in the form of digital coins, which in literal translation from English is called "coins". The key characteristic of cryptocurrency is decentralization, which means the absence of control by government agencies, such as tax authorities and financial institutions, over transactions. Information is stored using blockchain technology, which is a digital registry in which transaction data is recorded. It is impossible to change or delete existing records, only new information can be added. Bitcoin owners often face the need to sell, exchange or withdraw their funds into another currency. For this, there are exchanges, as well as specialized exchange services in Chernihiv.