Bitcoin (BTC) is the original blockchain-based digital currency and the world’s most popular cryptocurrency that was launched in 2009. As of August 2021, Bitcoin is even accepted by some major retailers, allowing it to be used for a variety of offline transactions. The success of Bitcoin has inspired the creation of a variety of other cryptocurrencies, otherwise known as “altcoins”, but despite the competition, Bitcoin has remained the world’s most widely-adopted decentralized digital currency.
