To begin with, it can be said that all cryptocurrencies are digital currencies, but not all digital currencies are cryptocurrencies; because cryptocurrencies rely on blockchain technology to operate, which is simply like an encrypted database, allowing users to create a reliable record of their transaction data and complete it directly between the two parties of the transaction; the sender and the receiver for example, without the need for a supervising third party, which makes it secure and largely protected from manipulation or fraud.