A Recordable and Traceable Blockchain Security Deletion Method

Abstract

The invention discloses a recordable and traceable block chain security deletion method, the process is: create a block with arbitrary data according to the requirements of different applications; the block contains fields that record the nature of the block, and the identification Divided into: original block, deleted block, modified block; deleted block and modified block also contain pointers to other blocks, which are used to connect the original block, deleted block and modified block; When deleting, the user creates a deleted block with a deleted block identifier. The deleted block contains a pointer to the original block that needs to be deleted, indicating that the deleted block deletes the original block; the rest of the data is the same as the original block The user data is completely consistent; after the deletion is completed, the block needs to be modified. The modification process is as follows: the user creates a modified block with a modification identifier, and the modification points to the deleted block. The rest of the data is the same as or different from the original block. At the same time, the original block information is saved for the undo deletion process; otherwise, the modification is completed.

Description

technical field [0001] The present invention relates to block chain technology, in particular to a method for secure deletion and modification of block chain that can be recorded and traced. Background technique [0002] Blockchain technology is a very popular emerging field at present, especially the current hot Bitcoin has had a significant impact on the academic and financial circles, and even the world economy. In fact, the blockchain is a chain that links many blocks, it is like a public ledger, each page of the ledger is a block, and the ledger is the blockchain. Blockchain has potentially important application value in medicine, banking, logistics and other fields. Blockchain has two important characteristics of decentralization and immutability. Decentralization ensures that data will not be mastered by a single individual, unit or organization, and ensures data sharing. At the same time, it cannot be tampered with and data is asymmetrical. Sexual encryption ensure...

AI Technical Summary

Problems solved by technology

However, the current blockchain application scenarios have tended to be diversified and complex. Some blockchain scenarios have departed from the P2P mode of data pointing, that is, data is pointing from people to machines. To achieve the purpose of modification or withdrawal

Therefore, most of the data in the current blockchain scene can only be deleted or modified by suspending the operation of the blockchain and re-publishing the chain, that is, rebuilding the blockchain. This method is very time-consuming and expensive. Consume resources

Frequent rebuilding will affect the stability of the blockchain service, and even cause data loss, weakening the credibility and integrity of the blockchain

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