Bitcoin was established in 2009 by an unknown person or group of people under the name Satoshi Nakamoto.

The goal of Bitcoin was to create a decentralized digital currency system that allows for direct money transfers between individuals without the need for an intermediary like banks.

The first Bitcoin software was launched with the first block (Genesis Block) in January 2009, and thereafter people started mining and trading Bitcoin.

Bitcoin relies on blockchain technology, which is a public and open ledger that records all transactions in a secure and transparent manner.

If you'd like to go into more details (like mining, total number of Bitcoins, or how blockchain works), I can explain that to you.