Cryptocurrency is a digital form of money that uses blockchain technology to ensure secure, transparent, and decentralized transactions. Unlike traditional currencies controlled by governments or banks, crypto operates on peer-to-peer networks, allowing users to send and receive funds globally with low fees. Popular cryptocurrencies like Bitcoin and Ethereum are used for investment, online payments, and smart contracts. Crypto also supports innovation in areas such as decentralized finance (DeFi), NFTs, and Web3. Although the market is highly volatile and risky, it continues to grow rapidly, attracting investors, developers, and businesses worldwide.