ETH$ETH Cryptocurrency, or crypto, is a digital or virtual form of currency that uses cryptography for security. Unlike traditional money issued by governments, cryptocurrencies are decentralized and typically run on blockchain technology—a distributed ledger enforced by a network of computers. Bitcoin, the first and most well-known crypto, launched in 2009. Cryptos enable peer-to-peer transactions without the need for banks or intermediaries. They can be used for buying goods, investing, or transferring funds globally. While offering potential financial freedom, crypto markets are highly volatile and still evolving in terms of regulation and adoption. Wallets and private keys are essential for access and security.