Cryptocurrency is a digital or virtual form of money that uses cryptography for security. Unlike traditional currencies, it isn’t controlled by any central bank or government—it's decentralized and usually runs on blockchain technology.

Popular examples include:

Bitcoin (BTC) – the original and most well-known

Ethereum (ETH) – known for smart contracts and decentralized apps

Solana (SOL), Ripple (XRP), and Cardano (ADA) – other major players with unique features

People use crypto for investing, trading, making payments, and even gaming or NFTs. The market can be volatile, but it’s also full of innovation and opportunity.

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