Bitcoin is a decentralized digital currency built on blockchain technology. Unlike traditional currencies, Bitcoin isn’t controlled by any central authority, and transactions occur directly between users. Launched in 2009 by an unknown individual or group under the pseudonym Satoshi Nakamoto, Bitcoin has since become one of the most popular cryptocurrencies worldwide.

With a capped supply of 21 million units, Bitcoin is created through a process known as mining. It can be used to purchase goods and services, but many investors view Bitcoin as both an investment and a hedge against inflation or currency devaluation.