Digital currencies such as bitcoin are based on blockchain technology, which is a decentralized ledger recording financial transactions without the need for financial intermediaries like banks. So, if you buy or sell any of the several cryptocurrencies available on the market, they will be recorded in a blockchain.
This makes cryptocurrencies immune to cyberattacks as there is no centralized database, while the absence of an intermediary should lead to faster settlements and lower transaction fees. But the verification of these blockchain transactions is done by cryptocurrency miners, who have very powerful computers capable of verifying and logging the digital currency transactions. More….