Merkle Path
A Merkle Path is a sequence of hashes used in a Merkle tree to verify that a specific transaction or data element belongs to a larger set without needing to download the entire dataset. In blockchain protocols, this is essential for efficient verification.
To verify a piece of data, the user provides the target data and the hashes of its sibling nodes along the path to the root. By hashing the target data and combining it with these sibling hashes step by step, one arrives at the Merkle Root.
If the calculated root matches the known root stored in a block header, the data is proven authentic. This process enables lightweight clients to interact with the blockchain securely.
It reduces the computational and bandwidth burden on network participants. It is a fundamental mechanism for data integrity and efficient light client synchronization.