Bitcoin is a decentralized digital currency and payment system created in 2009 by the anonymous entity Satoshi Nakamoto. Bitcoins are created through a process called mining and stored electronically. While no single entity controls the Bitcoin network, transactions are verified by miners and recorded in a public ledger called the blockchain. Though still small, Bitcoin usage has grown with many companies now accepting it as a form of payment. However, Bitcoin also faces issues regarding its lack of backing, user protection, and volatility that raise questions about its long-term viability and future role in the global financial system.