Partitioned block chain network and method for realizing partition query by same

Abstract

The invention discloses a partitioned block chain network. The block chain network consists of multiple nodes; according to visible permissions of the nodes to different transaction data, part or allof the nodes are divided in one or more partitions; the interior of the same partition is completely visible for the transaction data, and different partitions are invisible for the transaction data;according to the permissions of the nodes participating in a consensus process, all the nodes are classified: the nodes capable of participating in the consensus process of all the partitions are global consensus nodes, the nodes only capable of participating in the consensus process of the partitions where the nodes are located are partition consensus nodes, and the nodes incapable of participating in any consensus process are synchronous nodes; each node has a partition identifier; and each node stores transaction fingerprints of all historical transaction data. By partitioning and classifying the nodes in the block chain network, the query of the historical transaction data is limited in the same partition, so that the propagation range of the historical transaction data is greatly reduced and the data privacy protection effect is improved.

Description

technical field [0001] The present application relates to a blockchain (Blockchain) technology, in particular to a solution in which historical transaction data is queried. Background technique [0002] In the "White Paper on China's Blockchain Technology and Application Development" issued by the Ministry of Industry and Information Technology on October 18, 2016, the blockchain is defined as a kind of participant who does not need to participate in the intermediary and can also rely on mutual distrust or weak trust. A technology that maintains a set of non-tamperable ledger records. First of all, the blockchain is a chain-like data structure with blocks as the unit, and each block is linked with the previous block through cryptographic proof, such as figure 1 shown. Secondly, the blockchain is a distributed ledger shared by the entire network. In many scenarios, the two technical terms blockchain and distributed ledger have the same meaning. [0003] Typically, blockch...

AI Technical Summary

Problems solved by technology

Unauthorized nodes can only obtain encrypted transaction data, which cannot be decrypted due to the lack of decryption parameters

The disadvantage of this scheme is that all transaction data is still broadcast to all nodes in the blockchain. Although only specific authorized nodes can decrypt it, the summary of the transaction is transparent to all nodes, so it cannot meet the requirements of higher privacy protection. Application Scenario

Transaction data can only be decrypted by users participating in the transaction and supervisory users, and cannot be decrypted by other users

The shortcoming of this scheme is similar to CN106534097A

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