HIGHLIGHTS
SUMMARY
Although the transaction owner can set a policy for redacting the transaction, and only users whose attributes satisfy the policy can redact the transaction, the scheme does not have a mechanism to revoke the trapdoor, so once the user obtains the trapdoor, he may redact data multiple times. In the voting-based method, when the number of votes for the data to be redacted reaches a certain threshold, it can be regarded as having reached a redacting consensus. The authors propose an anonymous and efficient redactable blockchain scheme called AeRChain, in which the improved . . .
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