Bitcoin as its name tells us, is a currency but digital or also cryptocurrency that is exchanged through the internet through a cryptographic system that gives us security of our transactions through blockchain, which we can say is like an accounting book that is You can save on multiple computers in different locations.
This coin was created in 2008 by an entity known as Satoshi Nakamoto whose specific identity is unknown. This character worked in the source code of the reference application along with other volunteer developers until December 2010 at that time he decided to conclude his public activity.