Cryptocurrency, or crypto, is a digital or virtual currency that uses cryptography to secure and verify transactions and to control the creation of new units. It operates independently of a central bank and can be exchanged for goods and services or traded for other currencies. One of the most well-known cryptocurrencies is Bitcoin, which was created in 2009 by an unknown person or group using the name Satoshi Nakamoto. Bitcoin uses a decentralized system, meaning that it is not controlled by...