It was created in 2009 by an individual or group of developers using a pseudonym, Satoshi Nakamoto. First of all, Bitcoin is a decentralized digital currency, marked with a sign ₿. It uses peer-to-peer blockchain technology to process and execute transactions. Bitcoin was invented in 2009 by Satoshi Nakamoto. Its creation is covered in mystery. Satoshi Nakamoto is not a real person – it was a group of people or a single enthusiast who developed bitcoin and authored its white paper.