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How Does a Merkle Tree Relate to Transaction Integrity?

A Merkle Tree, or hash tree, is a data structure used to efficiently verify the integrity and consistency of data. In a blockchain block, it summarizes all transactions into a single hash (the Merkle Root).

This allows a lightweight client to verify if a transaction was included in a block without downloading all block data.

What Is the Impact of Transaction Batching on Merkle Tree Efficiency?
How Does the Segregated Witness (SegWit) Upgrade Affect the UTXO Model and Merkle Tree Structure?
What Cryptographic Primitive Is Primarily Used to Construct the Merkle Tree and How Does It Ensure Data Integrity?
What Is a Merkle Tree and How Does SHA-256 Contribute to Its Function in a Block?