Cryptocurrency

<p>A cryptocurrency (also known as crypto currency) is a digital asset designed to work as a medium of exchange using cryptography to secure the transactions to control the creation of additional units and to verify the transfer of assets. Cryptocurrencies are classified as a subset of digital currencies and are also classified as a subset of alternative currencies and virtual currencies.</p><p>Bitcoin created in 2009 was the first decentralized cryptocurrency. Since then numerous cryptocurrencies have been created. These are frequently called altcoins as a blend of bitcoin alternative. Bitcoin and its derivatives use decentralized control as opposed to centralized electronic money/centralized banking systems. The decentralized control is related to the use of bitcoin's blockchain transaction database in the role of a distributed ledger</p>