Bitcoin is a cryptocurrency and a digital payment system invented by an unknown programmer, or a group of programmers, under the name Satoshi Nakamoto. It was released as open-source software in 2009.
ControlControl of the Bitcoin currency BTC is governed by a pair of cryptographic digital keys known as the public and private keys. The public key is open to the public and can be used to create a unique Bitcoin Address where individuals may receive funds. The private key represents control and ownership over these funds enabling the private key holder to produce a digital signature which is essential for the transfer of bitcoins.