Bitcoin is a decentralized digital currency that operates without the necessary for a principal authority or intermediary, like a bank. Introduced in 2009 by way of an unrevealed individual or group answerable to the nom de guerre Satoshi Nakamoto, Bitcoin is powered away blockchain technology, a public ledger that records all transactions securely and transparently. It is known destined for its limited supply of 21 million coins and its use as a trust in of value and medium of exchange. Bitcoin has become a well-received investment choice and a crest of the evolving digital economy.