This describes a data structure where new information can only be added to the end, never modified or removed from prior entries. It establishes an unalterable historical record of all transactions or data additions. This characteristic is fundamental to the integrity of many distributed ledger technologies.
Context
The append-only nature of blockchain ledgers is a core property ensuring data immutability and tamper resistance, crucial for trust in digital assets. News often reports on blockchain audits or forensic analysis, which depend entirely on this unchangeable record. Debates around data sovereignty and the right to be forgotten sometimes conflict with this foundational attribute, prompting discussions on alternative data handling methods or privacy layers.
This research establishes fundamental lower bounds on cryptographic accumulator witness updates, proving Merkle Mountain Ranges are optimally efficient.
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