What is cryptocurrency?
Globally, cryptocurrencies are a subset of some alternative digital known currencies. A cryptocurrency exchange methods are using cryptography due to secure all transactions and to control the creation of new units. As far as Bitcoin became the first and more strong decentralized cryptocurrency in 2009 and, since then, due to large number of cryptocurrencies are being created trying to copy bitcoin success and, so on, have been created. These are frequently called as altcoins generally, because they are an alternative to Bitcoin (altcoin), for example, Dogecoin. Cryptocurrencies use decentralized control exactly as Bitcoin.