Data redaction refers to the process of obscuring or removing sensitive information from a record while preserving the overall structure and integrity of the data. On a blockchain, this means making specific data unreadable or inaccessible without deleting the entire transaction. It typically employs cryptographic methods to hide portions of a transaction or document. This technique allows for selective privacy within a public ledger.
Context
Data redaction is a critical topic for businesses seeking to use blockchain while adhering to privacy regulations and protecting proprietary information. Zero-knowledge proofs and chameleon hashes are technologies often cited for enabling such capabilities. The implementation of effective redaction methods helps balance transparency with the need for confidentiality in various blockchain applications.
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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