Bitcoin is a decentralized digital currency that you can buy, sell, and exchange directly without an intermediary like a bank⁵. It was created in 2009 by an unknown person or group of people using the name Satoshi Nakamoto⁵. 

**Key Features of Bitcoin:**

1. **Decentralization:** Bitcoin operates on a peer-to-peer network, meaning no single entity controls it⁵.
2. **Limited Supply:** There will only ever be 21 million bitcoins, making it a scarce resource⁵.
3. **Security:** Transactions are secured by cryptographic algorithms, ensuring high levels of security⁵.
4. **Fast and Low-Cost Transactions:** Bitcoin transactions can be processed quickly and with relatively low fees compared to traditional banking systems⁵.

Currently, the price of one Bitcoin is approximately $56,182.38¹.