Definition ∞ A Merkle accumulator is a cryptographic data structure verifying the integrity of a growing list of data without storing all past data. This type of Merkle tree efficiently allows for the addition of new data elements while maintaining a compact, verifiable root hash that represents the entire dataset. It provides proof of inclusion for individual data points without requiring access to the full historical record. This makes it suitable for dynamic datasets.
Context ∞ Merkle accumulators are important for scaling blockchain networks and enhancing data integrity verification, particularly in contexts like sidechains or stateless clients. Research and development continue to focus on optimizing their performance and security properties for various applications. This impacts how data is efficiently managed and proven on decentralized ledgers.
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