$BTC Bitcoin is a cryptocurrency created in 2009 by a person or group of people using the pseudonym **Satoshi Nakamoto**. Its history is marked by technological innovations, controversies, and growing adoption. Here are the main milestones in its development:

Origins (2008-2009)**

**2008**: On October 31, Satoshi Nakamoto publishes the **Bitcoin white paper** entitled *"Bitcoin: A Peer-to-Peer Electronic Cash System"*. This document describes a decentralized electronic cash system based on blockchain, a distributed ledger technology.

- **2009**: On January 3, the first block of the Bitcoin blockchain, called the **genesis block**, is mined by Satoshi Nakamoto. The first Bitcoin software is published, and the first bitcoins are created.

. The beginnings (2009-2011)**

- **2009**: The first bitcoin transfers take place, notably between Satoshi Nakamoto and other developers such as Hal Finney.

- **2010**: On May 22, the first commercial transaction in Bitcoin takes place: a user buys two pizzas for 10,000 bitcoins (an event celebrated each year as **"Bitcoin Pizza Day"**).

- **2011**: Bitcoin begins to attract the attention of the media and investors. Other cryptocurrencies, such as Litecoin, appear.