Data erasure involves the complete and irreversible removal of specific data from a storage system. In the context of blockchains, this presents a significant challenge due to their inherent design for immutability. Achieving true data erasure on a public, decentralized ledger is exceptionally difficult without compromising the ledger’s integrity. It aims to eliminate all traces of particular information.
Context
The discussion of data erasure within blockchain technology is primarily driven by privacy regulations such as GDPR, which grant individuals the “right to be forgotten.” Solutions often involve cryptographic techniques like zero-knowledge proofs or off-chain storage with on-chain references. The debate centers on reconciling regulatory requirements with the foundational principles of distributed ledger technology.
This research introduces redactable blockchains, leveraging chameleon hash functions to enable controlled, auditable data modification while preserving ledger integrity for regulatory compliance and error correction.
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