A method and device for deleting blockchain data
A block chain and block technology, applied in the field of block chain, can solve the problems of unable to verify the validity of the block, destroy the non-tamperable feature of the block chain, etc., and achieve the effect of ensuring the non-tamperable feature and maintaining the point relationship
Active Publication Date: 2022-06-21
南京金宁汇科技有限公司
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This method can completely delete the transaction to be deleted, but the data in the block will also change accordingly, and the block hash value of the block will also change accordingly, and the legality of the block cannot be checked according to the block itself. test, destroying the immutable feature of the blockchain
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[0055] In order to facilitate the description of the technical solution of the application, some concepts involved in the application are first described below. First of all, the state of the world in the field of blockchain technology can be seen as all nodes start from the same genesis state, and sequentially run transactions in blocks that have reached consensus, so that the local data state is constantly changing according to the same sequence of operations. After the node executes the transaction in the same numbered block, the data state is completely consistent. The specific representation of the world state is a set of key-value pairs, and each state data is a key-value pair . Secondly, the transaction in blockchain technology is essentially the addition, deletion, modification and inspection of the world state, that is, the addition, deletion, modification and inspection of the key-value pair . A transaction can add, delete, modify, and query a key-value pair, or it ...
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This application provides a method and device for deleting blockchain data. The method generates a deletion request transaction according to the target transaction, wherein the target transaction is a transaction to be deleted; when the block where the deletion request transaction is located is verified by consensus, a replacement transaction is generated; a replacement area is generated according to the replacement transaction and the target block Block and delete execution transaction; when the block where the deletion execution transaction is located is verified by the consensus, delete the target transaction according to the deletion execution transaction, and replace the target block with a replacement block. The method realizes the complete deletion of a transaction that has been uploaded to the chain based on the consensus, without affecting other irrelevant transactions, and maintains the pointing relationship between blocks, thereby ensuring the non-tamperable property of the block chain.
Description
technical field [0001] The present application relates to the field of blockchain technology, and in particular, to a method and device for deleting blockchain data. Background technique [0002] The blockchain is a decentralized distributed database system jointly maintained by all nodes in the blockchain network. It consists of a series of data blocks generated based on cryptographic methods. Each data block is a block in the blockchain. piece. According to the sequence of generation time, the blocks are connected together in an orderly manner to form a data chain, which is vividly called a blockchain. Blockchain has security features that are immutable, unforgeable and fully traceable. Each block includes a block header and a block body. The block header records the key information of the block, including the block hash value of the previous block, Merkle root value, block signature and other information ; The block body consists of packaged transactions; among them, t...
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IPC IPC(8): G06Q20/38G06F21/64G06Q20/40G06F16/27G06F3/06
Inventor 石宁甘子荣李达
Owner 南京金宁汇科技有限公司