Bitcoin, the first decentralized digital currency, changed finance by enabling peer-to-peer transactions without banks or intermediaries. Built on blockchain, it ensures transparency, security, and immutability. With a fixed supply of 21 million, it's often called "digital gold."

Used worldwide for investing, remittances, and storing value, Bitcoin is both volatile and influential. Mining keeps the network secure via proof-of-work. Regulations differ by country, impacting its use and price.

Despite hurdles, Bitcoin remains a powerful force in financial innovation and the foundation of the crypto ecosystem.$BTC