O que é Bitcoin (BTC)?

Bitcoin (symbol: ₿; abbreviated ISO 4217: BTC or XBT) is a decentralized cryptocurrency, constituting an alternative economic system (peer-to-peer electronic cash system). Initially presented in 2008 on the The Cryptography Mailing mailing list by a programmer or group of programmers under the pseudonym Satoshi Nakamoto, it is considered the world's first decentralized digital currency, and responsible for the resurgence of the free banking system.

Bitcoin allows financial transactions without intermediaries, but verified by all users (nodes) of the network, which are recorded in a distributed database, called a blockchain.