#BTCPrediction Cryptocurrencies are digital or virtual currencies that use cryptography for secure financial transactions. They're decentralized, meaning not controlled by governments or institutions. Bitcoin, Ethereum, and Litecoin are popular cryptocurrencies. Crypto transactions are recorded on a public ledger called a blockchain, ensuring transparency and security. Cryptocurrencies offer fast, low-cost, and borderless transactions, but their value can be volatile. As investing in cryptocurrencies carries risk, it's essential to educate yourself and consider your financial goals and risk tolerance before investing.