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Cryptocurrency is a type of digital or virtual currency that relies on cryptographic techniques to ensure security, making it nearly impossible to counterfeit or double-spend. Unlike traditional currencies issued by governments (fiat), cryptocurrencies operate on decentralized networks based on blockchain technology, which is a distributed ledger that records all transactions across multiple computers. Key Features of Cryptocurrency: Decentralization : Most cryptocurrencies operate without a central authority, meaning they are managed collectively by the network. Security : Cryptocurrencies use cryptography for secure transactions and to control the creation of new units, making them resilient against fraud. Anonymity : Transactions can be conducted with a degree of privacy, though the level of anonymity varies by cryptocurrency. Popular Cryptocurrencies: Bitcoin (BTC) : The first and most widely recognized cryptocurrency, often referred to as digital gold. Ethereum (ETH) : Known ...