It was invented in 2009 by an unknown person using the alias Satoshi Nakamoto.
The Basics: What Is Bitcoin?
Bitcoin is a cryptocurrency and worldwide payment system. The concept was first described in 1998 by Wei Dai on the cypherpunks mailing list, suggesting the idea of a new form of money that uses cryptography to control its creation and transactions, rather than a central authority.[1] The first Bitcoin specification and proof-of-concept were published in 2009 in a cryptography mailing list by Satoshi Nakamoto
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