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Cryptocurrencies are digital or virtual currencies that use cryptography for security. They are decentralized and operate on a blockchain network, which is a distributed ledger technology that records and verifies transactions. Bitcoin, the first and most well-known cryptocurrency, was created in 2009, but since then, thousands of other cryptocurrencies have been developed. Transactions with cryptocurrencies are done without the need for a central authority, such as a government or bank, and they can be used to purchase goods and services or traded on various online platforms.

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