A block chain-based data sharing method and system

Abstract

The invention discloses a data sharing method and a data sharing system of a block chain. A data producer obtains a service interface through a client. The data producer uploads the existing data to the access server in the form of text in the prescribed format; The data producer sets up the appropriate access control through the client; The inquiry server controls the identity of the accessor through a unified port and receives the data inquiry request. The query server sends data query requests to all access servers in parallel. The access server writes timestamps, data indexes, access permissions, and operational records of the corresponding data into the block chain. By adopting the scheme of the invention, the following aspects can be improved: (1) data ownership: the system can provide a traceable path, and can effectively solve the problem of data right determination. (2)Data quality: data standards are formulated and data quality was improved through consensus verification. (3)Data security: Data security and privacy are guaranteed by various encryption techniques. (4)High throughput of data transaction: loosely coupled design is adopted.

Description

technical field [0001] The invention relates to a block chain data sharing method and system, belonging to the block chain technology. Background technique [0002] With the development of the Internet, blockchain technology has received widespread attention. Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. The servers of each enterprise can establish a blockchain alliance in an alliance manner to realize mutual data sharing and maximize enterprise benefits. Traditional blockchain data sharing has the following problems: [0003] (1) Data ownership cannot be clearly defined. [0004] How to define the ownership of data is not an easy task, involving various aspects of technology, business and law between users. In the case of unclear property rights, the subject who owns the data has no incentive to share the data, otherwise it will bring about the ...

AI Technical Summary

Problems solved by technology

If the data property rights cannot be protected, once the data is sold, it will face the risk of being infinitely copied and sold, and the market value of the data will also drop sharply due to the unlimited supply

[0005] (2) Different data quality standards, good and bad

On the one hand, even data in the same format may have semantic and metrological differences

On the other hand, the original data will have gaps and errors, and may also be mixed with a large amount of invalid and garbage data, and some participants will even "mix sand" to the data

Some means must be used to clean the data, otherwise it cannot be used

[0007] (3) Data security, privacy and misuse cannot be guaranteed

Data is collected and used without the consent of the production subject, or even flows into the data black market, which will cause a chain reaction in terms of user safety, enterprise safety and even national security

But now the phenomenon of data being used and abused privately is very common, which in turn makes many data subjects less willing to participate in data circulation

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