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Cryptocurrencies are a type of electronic money that rely on blockchain technology to secure and verify transactions. They differ from traditional currencies in that they do not require intermediaries like banks, making transactions faster and cheaper. These currencies use encryption systems to ensure privacy and security. Among the most famous cryptocurrencies are Bitcoin and Ethereum. With their growing popularity, governments and companies have begun to adopt and use them in various fields such as investment and trade. Despite their advantages, cryptocurrencies face challenges such as price volatility and legal regulation. The future of cryptocurrencies looks promising as technology continues to evolve and their global adoption increases.