### **Bitcoin (BTC): The First Cryptocurrency**  

**Bitcoin (BTC)** is a decentralized digital currency that was created in **2009** by an anonymous person or group known as **Satoshi Nakamoto**. It is the world's first cryptocurrency and operates without a central authority like a bank or government.  

#### **How Bitcoin Works**  
Bitcoin transactions are recorded on a **blockchain**, a public ledger that ensures security and transparency. The network uses a process called **mining**, where powerful computers solve complex mathematical problems to validate transactions and add them to the blockchain.  

#### **Key Features of Bitcoin**  
- **Decentralization** – No central authority controls Bitcoin.  
- **Limited Supply** – Only **21 million BTC** will ever exist, making it a scarce asset.  
- **Security** – Uses cryptographic technology to prevent fraud and hacking.  
- **Borderless Transactions** – Can be sent and received anywhere in the world without intermediaries.