#ArbitrageTradingStrategy Cryptocurrency, often called crypto, is a digital or virtual currency that uses cryptography for secure transactions. It operates on blockchain technology, a decentralized system that records all transactions across a network of computers. Unlike traditional money, cryptocurrencies are not controlled by any central authority like a government or bank. Popular cryptocurrencies include Bitcoin, Ethereum, and Binance Coin. People use crypto for buying, selling, investing, and even sending money internationally. Transactions are fast, transparent, and often anonymous. However, the market is volatile, and values can change rapidly. Crypto is also used in decentralized finance (DeFi) and NFTs, shaping the future of finance.