Bitcoin (BTC) is a new kind of digital currency-with cryptographic keys-that is decentralized to a network of computers used by users and miners around the world and is not controlled by a single organization or government. It is the first digital cryptocurrency that has gained the public's attention and is accepted by a growing number of merchants.
Put simply, cryptocurrency is digital money, which is designed in a way that it is secure and anonymous in some instances. It is closely associated with internet that makes use of cryptography, which is basically a process where legible information is converted into a code that cannot be cracked so as to tack all the transfers and purchases made. Cryptography has a history dating back to the World War II, when there was a need to communicate in the most secure manner.