Cryptocurrencies are digital or virtual currencies secured by cryptography, operating on decentralized networks like blockchain. They enable peer-to-peer transactions without intermediaries like banks. Bitcoin, the first and most well-known, emerged in 2009. Thousands of other cryptocurrencies, or altcoins, have since been created, each with varying features and purposes.
Their value is often volatile, influenced by supply, demand, adoption, and market sentiment. While offering potential for high returns, they also carry significant risks. Cryptocurrencies are used for online payments, investments, and as a store of value, though their acceptance varies widely. Regulation is still evolving globally.
