Multi-party sharing transaction metadata method, device and system based on block chain

Abstract

The invention discloses a sharing transaction metadata method, device and system based on block chains; transaction metadata can be extracted from various party transaction data and written into the block chain, thus forming a distributed shearing transaction metadata block chain account book; the method comprises the following steps: issuing a digital signature certificate based on a PKI / CA system for block chain nodes and transaction various parties, recording transaction metadata, and signaturing the block in a secrete manner; desensitizing transaction main body information, extracting transaction metadata from original transaction data, uploading the transaction metadata to block chain nodes, allowing the transaction main body to confirm the transaction metadata, allowing the block chain node to write the confirmed transaction metadata into the block chain, and allowing data sharing parties to check the block chain information after authorization. In an authority issuing business scene, the original transaction and collateral data are encrypted and stored through a storage service module, and related transaction authorities are provided for the transaction sharing party, the transaction main body and the transaction main body opponent party.

Description

technical field [0001] The present invention relates to the technical field of financial credit investigation information security, in particular to a blockchain-based method, device and system for sharing transaction metadata among multiple parties. Background technique [0002] With the continuous development of Internet information technology, the financial industry is gradually becoming Internet-based, and then emerging Internet financial industries such as online lending and consumer finance have gradually emerged. To carry out financial business on the Internet, we are faced with the following problems: [0003] 1. The single dimension of personal or corporate credit data: In the field of Internet financial lending, it is necessary to comprehensively evaluate the repayment ability of borrowing individuals or borrowing companies. In the field of e-commerce consumer finance, it is necessary to provide users with commodity installment loans based on user transaction recor...

AI Technical Summary

Problems solved by technology

[0003] 1. The single dimension of personal or corporate credit data: In the field of Internet financial lending, it is necessary to comprehensively evaluate the repayment ability of borrowing individuals or borrowing companies. In the field of e-commerce consumer finance, it is necessary to provide users with commodity installment loans based on user transaction records. However, at present, each platform only has some personal or corporate lending or buying and selling information, and cannot comprehensively evaluate the real situation of borrowing individuals or companies;

[0004] 2. Personal or corporate credit data segmentation and lag issues; most of the current trading systems are centralized trading systems, and the centralized systems that provide various services are out of business security considerations, and all parties are unwilling to share business data

[0008] At present, some companies have tried to introduce blockchain technology into the fields of personal or corporate credit records, evidence preservation, and real-time transactions. The potential of transaction certificate issuance related fields has not been fully explored, and how to use blockchain technology to solve related problems deserves further study

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