Definition ∞ A verifiable hash chain is a sequence of cryptographic hashes, where each hash is derived from the previous one, creating an immutable and auditable record of data. This structure allows for efficient verification of data integrity and the order of events. Any alteration to an earlier link in the chain would invalidate all subsequent hashes. It provides a secure and tamper-evident log.
Context ∞ Verifiable hash chains are a fundamental component underlying many blockchain and distributed ledger technologies, often referenced in news about data integrity and secure record-keeping. They are crucial for ensuring the immutability of transaction histories and the trustworthiness of decentralized systems. Concepts like Merkle trees and blockchain structures are built upon this principle. Understanding this concept is essential for grasping the foundational security of digital assets.
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