Data trusted space management and utilization method based on NFT

Abstract

The technical scheme of the invention discloses an NFT-based data trusted space management and utilization method, which is characterized in that corresponding service data trusted spaces are constructed for service data, different types of service data correspond to different service data trusted spaces, and data are isolated among different service data trusted spaces. According to the method, the NFT smart contract is constructed for different business scenes and business data, so that data isolation and independent management of the different business scenes are realized, credible spatialization management of scene data is realized, and the problems of fuzzy data permission boundary, unauthorized access and the like in a traditional centralized management and unified account book mode are effectively avoided. According to the method, the NFT is innovatively introduced as a management unit of the business data, right confirmation, right control and transaction circulation of the business data are unified into the NFT smart contract for management, and right confirmation and dynamic control of the data are better realized.

Description

Technical Field

[0001] This invention relates to a method for data ownership confirmation, access control and trusted circulation based on non-fungible tokens (NFTs), belonging to the fields of blockchain technology, data asset management and information security. Background Technology

[0002] Currently, data has become an important digital asset, but in practical applications, problems such as difficulty in establishing data ownership, lack of transparency in use, high circulation risks, and difficulty in auditing remain unresolved. Blockchain technology provides an immutable and traceable infrastructure, while NFTs, as a mechanism for uniquely identifying digital assets, possess strong ownership establishment capabilities and circulation potential. However, existing technologies are mainly used for digital artworks, and a universal and reliable solution for the management and application of data assets is still lacking. Summary of the Invention

[0003] The technical problem this invention aims to solve is: when multiple parties need to share and utilize their respective data, how to achieve data ownership confirmation, dynamic access control, and auditable, traceable, and reliable data sharing.

[0004] To address the aforementioned technical problems, the present invention discloses a method for managing and utilizing data trusted spaces based on NFTs. The method is characterized by constructing corresponding business data trusted spaces for business data, with different types of business data corresponding to different business data trusted spaces, and data isolation between different business data trusted spaces. The data trusted space management and utilization method includes the following steps: Step 1: Build a trusted data alliance chain, and create and deploy business data NFT smart contracts corresponding to the business data types; Step 2: Perform unique hash processing on the business data connected to the trusted data alliance chain to generate on-chain data identifiers and extract metadata information; Step 3: Generate a business data NFT corresponding to the business data accessed by the trusted data alliance chain through the business data NFT smart contract, realize dynamic access control of the business data based on the NFT, and bind the business data NFT with the metadata information generated in Step 2. Once a business data NFT is generated, permission types and time limit parameters are set. The data owner can operate and use the business data NFT according to the permission tags, and the data controller can adjust the permission policy according to the actual situation. Step 4: Confirm the owner of the business data NFT generated in Step 3 using the public key address of the transaction initiator, and write it into the blockchain ledger; Step 5: On-chain NFT-based technology mechanism enables full-cycle data traceability through data identity identification; off-chain data is synchronized with on-chain data in real time to provide complex and efficient querying of business data within the trusted space of business data. Business data within a trusted space based on NFTs can form a collection of data NFTs, depending on factors such as the data type or the organization to which the data belongs. This supports data application, approval, secure transfer, individual authorization, batch authorization, and querying of authorization status, thus providing support for data transactions and sharing.

[0005] Preferably, in step 2, the extracted metadata information includes data name, data type, creation time, permission tag, data source, and data hash value.

[0006] Preferably, in step 3, each business data NFT includes a data identity identifier, a data owner identifier, metadata, and an access control policy structure. The metadata is a URI link pointing to a JSON metadata file, which stores the metadata information generated in step 2.

[0007] Preferably, the business data NFT smart contract has methods for data application, approval, secure transfer, single authorization, batch authorization, and querying authorization status. In step 5, the data owner and the data applicant can share and utilize the data according to the methods provided by the business data NFT smart contract. The data owner can call the authorization delegation method to authorize the control of the business data NFT to other users on the chain and supports the cancellation of the delegated authorization.

[0008] Preferably, in step 5, the generation, application, authorization, delegation, access, and operation records of the business data NFT are recorded on the blockchain in the form of transactions, which have the characteristics of immutability and full-process traceability.

[0009] Preferably, in step 5, the off-chain synchronization service subscribes to block update information and parses the block information, synchronizing the transaction data involving the business data NFT to the off-chain traditional database, thereby providing the business with efficient and complex query capabilities.

[0010] Compared with existing technical solutions, the present invention has the following specific advantages: (1) By constructing NFT smart contracts for different business scenarios and business data, this invention realizes data isolation and independent management for different business scenarios, realizes trusted spatial management of scenario data, and effectively avoids problems such as blurred data permission boundaries and unauthorized access in traditional centralized management and unified ledger models.

[0011] (2) This invention innovatively introduces NFT as the management unit of business data, and unifies the confirmation of ownership, access control and transaction flow of business data into NFT smart contract for management, so as to better realize the confirmation of ownership and dynamic control of data.

[0012] (3) In this invention, the generation, application, authorization, delegation, access and operation records of business data NFTs are all recorded on the blockchain in the form of transactions, forming a complete data usage trajectory. The immutability of the blockchain ledger makes the operations throughout the entire data lifecycle traceable and auditable, improving the transparency and compliance of data governance and solving the problem of "usable but not traceable" in traditional data sharing.

[0013] (4) Data owners and controllers can flexibly configure data usage strategies based on the permission tags in the NFT metadata, supporting fine-grained, dynamic and flexible management of business data.

[0014] (5) This invention combines the trust and security of blockchain with the performance advantages of traditional databases. Real-time synchronization of on-chain and off-chain data is achieved through data synchronization services. The off-chain database is used for complex queries and business processing, while the on-chain ledger provides secure and reliable verification services, significantly improving the overall availability and scalability of the system.

[0015] (6) The business data NFT smart contract of the present invention provides methods for data application, approval, secure transfer, authorization and delegation, and supports single authorization, batch authorization and authorization status query. Data owners can authorize or revoke through the contract, ensuring that data is securely shared within a controllable scope and promoting the trustworthy circulation and value transformation of data elements. Attached Figure Description

[0016] Figure 1 This is a flowchart of a data trust space management and utilization method based on NFT disclosed in an embodiment of the present invention. Detailed Implementation

[0017] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0018] In this embodiment of the invention, it is currently necessary to construct a trusted data space for the medical industry, which requires the sharing, utilization, and management of test reports and electronic medical records. Therefore, the NFT-based trusted data space management and utilization method disclosed in this embodiment of the invention specifically includes the following steps: Step 1: Build a trusted medical data alliance chain, and create and deploy NFT smart contracts for test reports and electronic medical records.

[0019] Deploy off-chain traditional databases and data synchronization service systems.

[0020] Step 2: Perform unique hash processing on the accessed inspection and testing report data to generate a data identity identifier and extract metadata information, which includes the name, description, file link and other relevant attributes of the current data.

[0021] Step 3: Generate the corresponding inspection data NFT through the inspection report NFT smart contract. This inspection data NFT is then bound to the metadata information generated in Step 2.

[0022] Step 4: The system uses the public key address of the transaction initiator to confirm the ownership of the current verification data NFT and writes it into the blockchain ledger.

[0023] Step 5: Perform dynamic authorization and access control based on permission policies.

[0024] This invention supports data owners in accessing, using, and authorizing the inspection and testing data NFT generated in step 3. In this invention, once the data NFT is generated, permission types and time limits are set, and the data owner can operate and use it according to the permission tags. The data controller can adjust the permission policy according to the actual situation.

[0025] Step 6: Share and utilize the inspection and testing report data NFT.

[0026] The data NFT smart contract provides methods for data application, approval, secure transfer, individual authorization, bulk authorization, and querying authorization status. Data owners and data applicants can share and utilize data using the methods provided by the data NFT smart contract. Data owners can invoke authorization delegation methods (including individual and bulk authorization) to delegate control of the data NFT to other users on the blockchain, and can also cancel delegated authorizations. The generation, application, authorization, delegation, access, and operation records of data NFTs are recorded on the blockchain in the form of transactions, ensuring immutability and full traceability.

[0027] Step 7: The off-chain synchronization service subscribes to block update information and parses the block information, synchronizing transaction data involving inspection and verification report data NFTs to the off-chain traditional database. This provides the business with efficient and complex query capabilities. Based on this, a full-process data monitoring system that is auditable and traceable both on-chain and off-chain has been built.

[0028] Step 8: For electronic medical record data, perform the same operations as in steps 2-7. In this way, an NFT-based data space for laboratory test reports and an electronic medical record data space are constructed. Users can license or transfer data from any of their spaces to other certified users within a trusted space. Different users can own data in different spaces, and data transfer does not change the space to which the user belongs. Data is isolated between the two business spaces, facilitating management and use.

Claims

1. A method for managing and utilizing trusted data space based on NFTs, characterized in that, A trusted business data space is constructed for each business data type, with different trusted business data spaces corresponding to different types. Data is isolated between different trusted business data spaces. The trusted data space management and utilization method includes the following steps: Step 1: Construct a trusted data consortium blockchain, and create and deploy business data NFT smart contracts corresponding to the business data types; Step 2: Perform unique hash processing on the business data accessed by the trusted data consortium blockchain, generate on-chain data identifiers, and extract metadata information; Step 3: Generate business data NFTs corresponding to the business data accessed by the trusted data consortium blockchain through the business data NFT smart contracts, implement dynamic access control for the business data based on the NFTs, and bind the business data NFTs with the metadata information generated in Step 2; Once the business data NFTs are generated, permission types and time limits are set. The data owner can operate and use the business data NFT based on the permission tag, and the data controller can adjust the permission policy according to the actual situation; Step 4: Confirm the owner identity of the business data NFT generated in Step 3 through the public key address of the transaction initiator and write it into the blockchain ledger; Step 5: On-chain based on the NFT technology mechanism, the data identity identifier enables full-lifecycle traceability of the data, and off-chain through real-time synchronization with on-chain data, it provides complex and efficient query of business data within the trusted space of business data; Business data within the trusted space of business data based on NFT can form a data NFT collection according to the data type or the institution to which the business data belongs, supporting the application, approval, secure transfer, single authorization, batch authorization, and query of authorization status of the data, providing support for data trading and sharing.

2. The method for managing and utilizing trusted data space based on NFT as described in claim 1, characterized in that, In step 2, the extracted metadata information includes data name, data type, creation time, permission tag, data source, and data hash value.

3. The method for managing and utilizing trusted data space based on NFT as described in claim 2, characterized in that, In step 3, each business data NFT includes a data identity identifier, a data owner identifier, metadata, and an access control policy structure. The metadata is a URI link pointing to a JSON metadata file, which stores the metadata information generated in step 2.

4. The method for managing and utilizing trusted data space based on NFT as described in claim 1, characterized in that, The business data NFT smart contract has methods for data application, approval, secure transfer, single authorization, batch authorization, and querying authorization status. In step 5, the data owner and the data applicant can share and utilize the data according to the methods provided by the business data NFT smart contract. The data owner can call the authorization delegation method to authorize the control of the business data NFT to other users on the chain and supports the cancellation of the delegated authorization.

5. The method for managing and utilizing trusted data space based on NFT as described in claim 1, characterized in that, In step 5, the generation, application, authorization, delegation, access, and operation records of the business data NFT are recorded on the blockchain in the form of transactions, which have the characteristics of immutability and full-process traceability.

6. The method for managing and utilizing trusted data space based on NFT as described in claim 1, characterized in that, In step 5, the off-chain synchronization service subscribes to block update information and parses the block information, synchronizing the transaction data involving the business data NFT to the off-chain traditional database, thereby providing the business with efficient and complex query capabilities.

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