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Difficulty - MediumTotal Plays - 32Allowed Time - 10 secBest time - 0.758 sec#A#B#C#DExplanation:Bitcoin uses the SHA-256 cryptographic hash function to secure transactions and link blocks in the blockchain. This algorithm produces a fixed 256-bit output, ensuring immutability and resistance to tampering. By using SHA-256, Bitcoin maintains trust, decentralization, and data integrity across the network
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