Blockchain-Certified Data Trading for Tamper-Resistant Processing History
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Solution Overview
Problem
Existing data sharing systems struggle to objectively maintain the legitimacy of data processing history and reduce the risk of illicit tampering during data processing and distribution, especially in systems involving multiple business operators.
Innovation Solution
A data trading system utilizing a blockchain to record processing history and apply protection to processed data, requiring collation processing between processing information in a certificate and the blockchain to ensure legitimacy and deter illicit tampering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data is shared among multiple business operators to create value-added services, then data utilization and service creation are improved, but the risk of internal data tampering and loss of data legitimacy increases
Solution Approach 1:
A blockchain-based intermediary system is introduced between data providers and data users. The blockchain records processing history immutably and provides certificates that mediate trust between parties, allowing data sharing while maintaining legitimacy verification capability.
Solution Approach 2:
The system implements feedback mechanisms where processing history is recorded and made verifiable. Data users can verify the legitimacy of processed data by checking blockchain records, creating a feedback loop that deters tampering and maintains data integrity across the network.
2Reliability
If processing history is recorded and verified using blockchain technology, then data legitimacy is improved, but system complexity and operational difficulty increase
Solution Approach 1:
Instead of requiring all parties to maintain complete blockchain copies, the system uses certificate copying. Processing history is copied into compact certificate forms that can be easily verified without requiring full blockchain node participation, reducing system complexity.
Solution Approach 2:
The verification process is segmented into distinct components: blockchain recording of processing history, certificate generation by processors, and certificate verification by users. This segmentation allows different participants to perform only their specific functions, reducing overall system complexity.
3Reliability
If protection measures are applied to processed data requiring collation processing, then security against illicit tampering is improved, but ease of data operation and processing speed deteriorate
Solution Approach 1:
Processing certificates are prepared in advance with all necessary verification information embedded. This preliminary action allows rapid verification later without requiring complex real-time computations, maintaining ease of operation while ensuring security.
Data Source
AI summary
A primary-side data trading apparatus is capable of accessing a blockchain and includes a processing unit, a processing information generation unit, a history recording unit, an issuance unit, a protection unit, and a primary-side trading unit. The processing unit generates processed data from original data. The processing information generation unit generates a first transaction including processing information. The history recording unit records the first TX in the BC. The issuance unit issues a processing certificate including the processing information. The protection unit applies protection to the processed data. Upon an unsealing operation, the protected processed data requires an operator to perform collation processing between processing information of the processing certificate and processing information recorded in the BC. The primary-side trading unit provides a secondary-side data trading apparatus with the protected processed data and processing certificate.