Bitcoin is the first decentralized digital currency, created in 2009 by an unknown person using the pseudonym Satoshi Nakamoto. It operates on a peer-to-peer network without the need for a central authority or intermediaries, making transactions secure and transparent.

Bitcoin's decentralized nature has revolutionized the concept of currency, providing a secure and transparent alternative to traditional financial systems. Satoshi Nakamoto's vision has paved the way for a new era of digital transactions.