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Bitcoin ($BTC) is the first and most famous cryptocurrency, launched in 2009 by an individual or group under the pseudonym "Satoshi Nakamoto". Bitcoin is based on blockchain technology that allows transactions to be recorded transparently and securely without the need for a central intermediary, such as banks. Bitcoin is produced through a process known as "mining," where miners use high computing power to solve complex mathematical problems and validate transactions.

Bitcoin is characterized by its scarcity, as its total supply does not exceed 21 million units, making it a store of value for many and likening it to digital gold. Bitcoin is used for trading and investment, and it has been recognized in some countries as a source of wealth or even a means of payment. Despite its price volatility, some see it as a hedge against inflation and an alternative financial system.