Cryptocurrencies are virtual digital assets created by computer software. These currencies are usually built on software in the form of blockchain. People believe that holding money in cryptocurrencies is more secure because the accounts of these currencies are stored in blockchain software that cannot be changed, whereas money in banks can be accessed by anyone who has access to the records. Or can be changed through hacking. Cryptocurrencies are traded through crypto exchanges. There are two types of crypto exchanges: centralized and decentralized.