A cryptocurrency is a digital asset designed to work as a medium of
exchange wherein individual coin ownership records are stored in a ledger existing in a form of
a computerized database using strong cryptography to secure transaction records, to control the
creation of additional coins, and to verify the transfer of coin ownership. It typically does not
exist in physical form (like paper money) and is typically not issued by a central authority.
Cryptocurrencies typically use decentralized control as opposed to centralized digital currency
and central banking systems.