Data modification and synchronization method, apparatus, device and storage medium for block chain

Abstract

The embodiment of the invention discloses a data modification and synchronization method, apparatus and device and a storage medium of a block chain. The data modification method of the block chain isapplied to inspect the inspection node in the block chain network. The method comprises the following steps: the inspection node obtains at least one synchronization block from an ordinary node, andthe synchronization block is an ordinary block; The checking node checks the data of the synchronous block according to the set modification rules to determine the target modification data; The inspection node modifies the target modification data; The checking node generates a checkpoint according to the synchronization block, and calculates and generates a checkpoint mark according to the data of the synchronization block. The checking node associates the checkpoint identifier with the synchronization block for recording; The checking node confirms the checkpoint identification by the checking node in the checking block chain network for storing in the checking block. A synchronization block is used for synchronous downloading of a common node. Through the technical proposal provided bythe embodiment of the invention, harmful data can be removed from the block chain.

Description

technical field [0001] Embodiments of the present invention relate to block chain technology, and in particular to a block chain data modification and synchronization method, device, device, and storage medium. Background technique [0002] Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. [0003] The data of the blockchain network is usually stored in a chain structure, each block points to the previous block, and the block identifier of each block is generated by all transaction data in this block through cryptography. This makes it difficult for traditional blockchain networks, such as Bitcoin / Ethereum / Fabric, to clear any data that has been published on the blockchain network. For newly generated blocks, it can still be corrected through the soft fork scheme, but for the old blocks that have been confirmed by more blockchain nodes, the data on them...

AI Technical Summary

Problems solved by technology

This makes it difficult for traditional blockchain networks, such as Bitcoin / Ethereum / Fabric, to clear any data that has been published on the blockchain network

For newly generated blocks, it can still be corrected through the soft fork scheme, but for the old blocks that have been confirmed by more blockchain nodes, the data on them cannot be cleared at all

[0004] If some criminals spread some harmful information on the blockchain network, such as pornography, terrorist violence, etc., by taking advantage of the characteristics that the blockchain is difficult to tamper with, and once the information is stored in the block, the blockchain information service provider will also It cannot be cleared at will, otherwise it will damage the characteristics of blockchain that are difficult to tamper

However, these harmful information need to be cleared from the blockchain, and the existing technology does not provide an effective solution

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