Blockchain is a decentralized and distributed ledger technology that securely records and verifies transactions across multiple computers in a network. It consists of a chain of blocks, each containing a list of transactions. Once a block is completed, it's linked to the previous one using cryptographic hashes, forming a chain. This technology is most commonly associated with cryptocurrencies like Bitcoin, but its applications extend to various industries, offering transparency, security, and immutability in data management.

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