Hash

A hash is a mathematical algorithm that converts a set of data into a unique string; This process is frequently used to ensure data integrity, especially in cryptographic operations.

A hash is the output of an algorithm that transforms data of a certain size into a fixed-length string through a cryptographic operation. It is used as a unique identifier of blocks in blockchain. Each block contains the data it contains and the hash of the previous block. In this way, blocks are connected to each other by a chain and if any changes are made, the chain is broken.

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