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Blockchains are usually made up of hundreds of thousands of blocks, and that each block can contain up to several thousand transactions, it becomes clear that memory space and computing power are two big problems. As a result, it is advantageous to use as little data as possible when processing and verifying transactions. It not only reduces CPU processing times, but also ensures a higher level of security. This will be performed by Merkle Tree. Besides Merkle tree authorizes the blockchain system to verify that a specific transaction that took place on a certain block is as accurate as possible.