Cryptocurrency is a digital or virtual form of currency that uses cryptography for security, making it nearly impossible to counterfeit or double-spend. Unlike traditional currencies issued by governments, cryptocurrencies operate on decentralized networks based on blockchain technology, ensuring transparency and immutability. Popular examples include Bitcoin, Ethereum, and Binance Coin, each serving unique purposes in the financial ecosystem. Cryptocurrencies enable fast, secure, and borderless transactions, revolutionizing industries such as finance, gaming, and supply chain management. As adoption grows, crypto continues to reshape the future of money and digital innovation.