Block chain metadata storage system and its storage method and retrieval method

Abstract

The invention discloses a block chain metadata storage system and its storage and retrieval method, which comprises: at least one master node and several secondary nodes each connected to the Internet and constructed into a distributed shared network through the block chain. The main node includes: a data receiving module, which is used to receive source data from outside; a distributed storage module, which is connected to the data receiving module, and is used for distributed storage of source data; The storage module is connected to reduce the dimensionality of the source data to form metadata, and then perform preservation operations on the metadata to form data fingerprints; and the data storage module is connected to the dimensionality reduction and preservation module to convert the data The fingerprint is written into the blockchain, and the consensus process of the blockchain is used to publish the entire network. The secondary node includes: a data consensus module, which is used to receive and store the data fingerprints issued by the blockchain to complete the consensus process of the blockchain.

Description

technical field [0001] The invention relates to the field of data storage and retrieval, in particular to a metadata storage system and a storage and retrieval method. Background technique [0002] The blockchain is a reliable database maintained by a decentralized and trustless collective. The distributed network is the infrastructure of the blockchain. The data generated on each node is broadcast to other nodes through the distributed network, and other nodes pass the workload proof. to verify the authenticity of the data. Distributed network is the premise to ensure the decentralized, non-tamperable, and traceable features of blockchain. In the Bitcoin network, it is precisely because of the verification nodes distributed around the world that the Bitcoin workload proof mechanism is recognized. Only then did people realize the value of the blockchain. [0003] The distributed network is the basis of the blockchain, and each node connected to the distributed network stor...

AI Technical Summary

Problems solved by technology

But in the actual application system, business data may be very large, especially including video and audio data, often dozens of megabytes, some even hundreds of megabytes, such a huge data transmission in the network, the bandwidth requirements are very high, and If such a large amount of data in the entire network is aggregated into "one ledger", the ledger will be very large, and it is difficult for a single node to guarantee sufficient storage capacity to store

Even in the current Bitcoin network, the capacity of the ledger is still above 4G after optimization, and with the progress of mining, the capacity of the ledger continues to expand. It takes dozens of hours for an ordinary PC to download the entire ledger , which seriously affects the user experience, which not only poses a great challenge to the popularization and promotion of blockchain, but also makes the application of blockchain in commercial systems more severe.

[0004] Corresponding to data storage is data retrieval. How to quickly retrieve the huge "one ledger" data is also facing severe challenges in the blockchain distributed network

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