Block

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A list of transactions recorded into a ledger over a given period. The size, period, and triggering event for blocks is different for every blockchain. A block contains the data structure and history of the transactions. Each block hold the archive of valid transactions which are hashed and encoded into a Merkle tree. Each block includes the cryptographic hash of the prior block in the blockchain, linking the two. The blocks then form a chain; in other words the blockchain.

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