Cryptocurrency is a digital or virtual form of money that uses cryptography for secure transactions and operates on decentralized networks, typically blockchain technology. Unlike traditional currencies controlled by governments, cryptocurrencies like Bitcoin and Ethereum are peer-to-peer and not governed by central banks. They offer benefits such as fast, low-cost global transactions and financial inclusion. However, crypto markets are highly volatile and often subject to regulatory uncertainty and security concerns. Despite these challenges, blockchain innovations continue to grow, driving adoption in finance, gaming, and supply chains. As technology evolves, cryptocurrency remains a disruptive force in the global financial system.