CN114741738A - Tracing data processing method and device based on block chain, electronic equipment and medium - Google Patents

Abstract

The invention relates to the technical field of blockchain, and provides a method, device, electronic device and medium for processing traceability data based on blockchain, the method comprising: creating a traceability link of a target object based on original traceability data, and creating a traceability link of a target object through a smart contract Deploy the traceability link into the blockchain; parse the traceability data storage request to obtain the analysis result; send the analysis result to the NFT generation model of the smart contract, generate the NFT data of the data provider and store the certificate; when detecting When the data query party has permission to download the traceability data, an authorization message is generated through the smart contract, and the traceability data is downloaded based on the authorization message. The invention encapsulates the scattered data of the data provider into an inseparable whole in the form of NFT, performs credible storage of the traceability data and the data provider, and improves the location efficiency and accuracy of the traceability source of the traceability data.

Description

Blockchain-based traceability data processing method, device, electronic device and medium

technical field

The present invention relates to the technical field of blockchain, in particular to a method, device, electronic device and medium for processing traceability data based on blockchain.

Background technique

For the commodity industry, the supply chain is relatively isolated, and each node in an industrial chain forms an island of information. The existing traceability model is to mark an object to be traced at the output source of the traceability object, and each data provider participating in the transmission of the traceability object provides the link data to the traceability system.

However, after each data provider uploads the data to the traceability system, complex processes such as traceability model, data analysis, and multi-party verification are required to locate the data source, resulting in low efficiency of traceability data location. At the same time, because the relationship between the data and the data provider is not credible, the data provider may deny the facts and tamper with the data, resulting in a low accuracy rate of traceability data.

SUMMARY OF THE INVENTION

In view of the above, it is necessary to propose a blockchain-based traceability data processing method, device, electronic equipment and medium, which encapsulates the scattered data of the data provider into an inseparable whole in the form of NFT, and provides traceability data and data. This improves the efficiency and accuracy of locating the source of traceability data.

A first aspect of the present invention provides a blockchain-based traceability data processing method, the method comprising:

Receive the original traceability data of the target object, create a traceability link of the target object based on the original traceability data, and deploy the traceability link into the blockchain through a smart contract, wherein the traceability link contains Traceable source code;

In response to the received traceability data storage request from the data provider of the target object, parsing the traceability data storage request to obtain a parsing result;

Send the analysis result to the NFT generation model of the smart contract, generate the target NFT data of the data provider and store the certificate;

When detecting a request to download the traceability data of the target object sent by the data inquiring party, determine whether the data inquiring party has the right to download the traceability data;

When the data query party has the right to download the traceability data, an authorization message is generated through the smart contract, and the traceability data is downloaded based on the authorization message.

Optionally, sending the parsing result to the NFT generation model of the smart contract, generating the target NFT data of the data provider and storing the certificate include:

Identify the data type of each data field information in the parsing result;

When it is recognized that the data type of each data field information in the parsing result is text data, the information of each data field is sent to the NFT generation model of the smart contract; when it is recognized that the parsing result is in the NFT generation model When the data type of each data field information is not text data, calculate the hash value of each data field information, and send the hash value to the NFT generation model of the smart contract;

The NFT generation model of the smart contract generates the NFT identification code of the data provider, and the node name and data field information of the traceability node of the data provider corresponding to the target traceability link, and the information of each data field. Data format, filling the received information of each data field or hash value to the corresponding position of the traceability node of the data provider to obtain the first NFT data;

Fill in the information of the data provider in the field corresponding to the data provider to obtain the second NFT data;

The NFT generation model of the smart contract encapsulates the NFT identification code, the first NFT data and the second NFT data to generate the target NFT data of the data provider;

Send the target NFT data of the data provider to the data storage model of the smart contract, and write the target NFT data of the data provider into the blockchain for storage in the data storage model. .

Optionally, the creation of the traceability link of the target object based on the original traceability data includes:

Identify the original traceability data, obtain the node name and data field information of each traceability node of the target object, and the data format of each data field information;

Each traceability node of the target object is converted into a traceability node of the corresponding traceability link, wherein the traceability node of the traceability link contains the node name and data field information of the traceability node, and the information of each data field information. Data Format;

Convert the reference relationship between each traceability node into the edge between the nodes in the corresponding traceability link, wherein, the edge between the traceability nodes in the traceability link is used as the reference between the traceability nodes in the traceability link relation;

The source tracing link of the target object is created according to the source tracing node of the source tracing link and the reference relationship between the source tracing nodes in the source tracing link.

Optionally, the parsing of the traceability data storage request to obtain an parsing result includes:

Parse the traceability data deposit request, and obtain the target traceability source code and deposit data;

Matching the target traceability link corresponding to the target traceability source code from the preset database;

Send the certificate data to the smart contract, and the data certificate model of the smart contract parses the certificate data according to a preset analysis specification to obtain a parsing result.

Optionally, the judging whether the data query party has the right to download the traceability data includes:

Parse and download the traceability data request of the target object, and obtain the NFT identification code of the traceability data;

Send the NFT identification code to the NFT application model of the smart contract, generate the application for the use of the NFT data, and write the application for the use of the NFT data into the blockchain;

Determine whether the application for the use of the NFT data is authorized;

When the application for the use of the NFT data is authorized, it is determined that the data query party has the right to download the traceability data;

When the application for the use of the NFT data is not authorized, it is determined that the data query party has no right to download the traceability data.

Optionally, generating an authorization message through the smart contract and downloading the traceability data based on the authorization message includes:

The NFT authorization model of the smart contract receives the authorization message sent by the data provider, and writes the authorization message into the blockchain;

Verifying the signature of the data query party based on the authorization message;

When the signature verification is passed, the data query party downloads the traceability data from the data storage server based on the authorization message.

Optionally, the method further includes:

When detecting a request for querying the traceability data sent by the data query party, obtain the traceability source code of the target object;

Query the corresponding traceability link according to the traceability source code, and match the depository information of all traceability nodes on the traceability link;

Sort the certificate storage information of all the traceability nodes according to a preset sorting method, and return the sorting result to the data query party.

A second aspect of the present invention provides a blockchain-based traceability data processing device, the device comprising:

The receiving and creating module is used to receive the original traceability data of the target object, create the traceability link of the target object based on the original traceability data, and deploy the traceability link into the blockchain through a smart contract, wherein, The traceability link includes traceability source code;

A parsing module, configured to parse the traceability data deposit request in response to the received traceability data deposit request from the data provider of the target object, and obtain a parsing result;

A generation module, configured to send the analysis result to the NFT generation model of the smart contract, generate the target NFT data of the data provider and store the certificate;

a judgment module, configured to judge whether the data query party has the right to download the traceability data when a request for downloading the traceability data of the target object sent by the data query party is detected;

A download module is configured to generate an authorization message through the smart contract when the data query party has the right to download the traceability data, and download the traceability data based on the authorization message.

A third aspect of the present invention provides an electronic device, the electronic device includes a processor and a memory, and the processor is configured to implement the blockchain-based traceability data processing method when executing a computer program stored in the memory .

A fourth aspect of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the blockchain-based traceability data processing method is implemented .

To sum up, the blockchain-based traceability data processing method, device, electronic device and medium of the present invention create a traceability link of the target object based on the original traceability data, and use a smart contract to transfer the traceability link to the target object. The traceability link is deployed in the blockchain, establishes the relationship between traceability data and the provider of the traceability data, and uses the blockchain to store the traceability data, so that the traceability data cannot be tampered with once it is on the chain. The security of the traceability data subsequently stored on the traceability link. Parse the data provider's traceability data storage request to obtain the parsing result, and send the parsing result to the NFT generation model of the smart contract, generate the target NFT data of the data provider and store the certificate, and store the data provider's data. The scattered data is encapsulated into an inseparable whole in the form of NFT, and the traceability data and the data provider are credibly stored, which improves the location efficiency and accuracy of the traceability source of the traceability data. When the data query party has the right to download the traceability data, an authorization message is generated through the smart contract, and in the case of authorization, the traceability data is downloaded based on the authorization message, which improves the security of the traceability data.

Description of drawings

FIG. 1 is a flowchart of a blockchain-based traceability data processing method provided in Embodiment 1 of the present invention.

FIG. 2 is a structural diagram of a blockchain-based traceability data processing device provided in Embodiment 2 of the present invention.

FIG. 3 is a schematic structural diagram of an electronic device according to Embodiment 3 of the present invention.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments may be combined with each other under the condition of no conflict.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

Example 1

FIG. 1 is a flowchart of a blockchain-based traceability data processing method provided in Embodiment 1 of the present invention.

In this embodiment, the blockchain-based traceability data processing method can be applied to electronic devices, and for electronic devices that need blockchain-based traceability data processing, the method of the present invention can be directly integrated on the electronic device The provided functions of traceability data processing based on blockchain, or run in electronic devices in the form of a software development kit (Software Development Kit, SDK).

As shown in Figure 1, the blockchain-based traceability data processing method specifically includes the following steps. According to different requirements, the order of the steps in the flowchart can be changed, and some can be omitted.

S11: Receive the original traceability data of the target object, create a traceability link of the target object based on the original traceability data, and deploy the traceability link into the blockchain through a smart contract, wherein the traceability link Traceable source code is included.

In this embodiment, in the process of processing the traceability data of the target object, a traceability link can be created for the target object, so as to realize the storage of the traceability data of the target object, and deploy the traceability data to the blockchain through a smart contract middle.

In this embodiment, the target object may be a certain product, for example, vaccine A, to create a traceability link for vaccine A, the traceability link corresponds to a unique traceability source code, and the traceability source code is used to uniquely identify all describe the target object.

In this embodiment, the smart contract provides functions such as link storage of traceability data, data storage, NFT data generation, NFT application, NFT authorization, data traceability query, etc. The smart contract includes NFT generation model, data Certificate deposit model, NFT application model, data deposit certificate model and NFT authorization model.

In an optional embodiment, the creation of the traceability link of the target object based on the original traceability data includes:

Identify the original traceability data, obtain the node name and data field information of each traceability node of the target object, and the data format of each data field information;

Each traceability node of the target object is converted into the traceability node of the corresponding traceability link, wherein the traceability node of the traceability link contains the node name and data field information of the traceability node, and the information of each data field information. Data Format;

Convert the reference relationship between each traceability node into the edge between the nodes in the corresponding traceability link, wherein, the edge between the traceability nodes in the traceability link is used as the reference between the traceability nodes in the traceability link relation;

The source tracing link of the target object is created according to the source tracing node of the source tracing link and the reference relationship between the source tracing nodes in the source tracing link.

In this embodiment, the original traceability data includes the node name and data field information of each traceability node of the target object, and the data format of each data field information, and the original data source data also includes each Traceability data provider information, original data characteristics and other attribute information of traceability data of each traceability node.

In this embodiment, the traceability link of the target object is created according to the original traceability data, and the traceability link is deployed into the blockchain through a smart contract, so as to establish a relationship between the traceability data and the provider of the traceability data. and use the blockchain to store the traceability data, so that the traceability data cannot be tampered with once it is on the chain, which improves the security of the traceability data that is subsequently stored on the traceability link.

S12, in response to the received traceability data certification request from the data provider of the target object, parse the traceability data certification request to obtain a parsing result.

In this embodiment, when the data provider needs to store the traceability data of the target object, the client of the data provider sends a request for the traceability data storage to the server, and the server parses the traceability data storage request, and obtains the analysis result.

In an optional embodiment, the parsing of the traceability data storage request to obtain a parsing result includes:

Parse the traceability data deposit request, and obtain the target traceability source code and deposit data;

Matching the target traceability link corresponding to the target traceability source code from the preset database;

Send the certificate data to the smart contract, and the data certificate model of the smart contract parses the certificate data according to a preset analysis specification to obtain a parsing result.

In this embodiment, a database may be established in advance, and the database stores the traceability source codes of the traceability links of all target objects. When the data provider sends a traceability data storage request, the traceability data storage request contains the target Traceability source code and evidence data, the target traceability link can be quickly determined through the target traceability source code, the target traceability link corresponds to a preset parsing specification, and the certificate data is parsed according to the preset parsing specification , which is convenient for the management of the subsequent storage data, and provides the management efficiency of the storage data.

S13, send the analysis result to the NFT generation model of the smart contract, generate the target NFT data of the data provider and store the certificate.

In this embodiment, when the parsing result is stored for verification, the parsing result is sent to the NFT generation model of the smart contract, and the parsing result is NFT encapsulated to obtain the NFT data of the data provider.

In an optional embodiment, in the NFT generation model of sending the parsing result to the smart contract, generating and storing the target NFT data of the data provider includes:

Identify the data type of each data field information in the parsing result;

When it is recognized that the data type of each data field information in the parsing result is text data, the information of each data field is sent to the NFT generation model of the smart contract; when it is recognized that the parsing result is in the NFT generation model When the data type of each data field information is not text data, calculate the hash value of each data field information, and send the hash value to the NFT generation model of the smart contract;

The NFT generation model of the smart contract generates the NFT identification code of the data provider, and the node name and data field information of the traceability node of the data provider corresponding to the target traceability link, and the information of each data field. Data format, filling the received information of each data field or hash value to the corresponding position of the traceability node of the data provider to obtain the first NFT data;

Fill in the information of the data provider in the field corresponding to the data provider to obtain the second NFT data;

The NFT generation model of the smart contract encapsulates the NFT identification code, the first NFT data and the second NFT data to generate the target NFT data of the data provider;

Send the target NFT data of the data provider to the data storage model of the smart contract, and write the target NFT data of the data provider into the blockchain for storage in the data storage model. .

In this embodiment, when the target NFT data of the data provider is encapsulated, the information of the data provider is bound, so that the target NFT data is more complete and the management efficiency of the NFT data is improved.

In this embodiment, the NFT generation model in the smart contract will receive each data field information, hash value, data provider information and NFT identification code, and these scattered data are encapsulated in the form of NFT as inseparable When the traceability data is abnormal, the NFT identification code of the abnormal traceability data is obtained, and the data source of the abnormal traceability data is determined to be the data provider corresponding to the NFT identification code, for example, in the vaccine logistics and transportation link , Operator A provides data on the quantity of goods out of the warehouse, Operator B provides transportation environment data such as temperature and humidity during transportation, Operator C provides transportation vehicle and driver information, and finally finds that the number of vaccines is abnormal, it can be quickly located. Operator A improves the location efficiency and accuracy of the traceability source of the traceability data. In addition, since the target NFT data of each data provider is taken as a whole, the traceability data and the data provider are credibly stored to avoid It solves the problem of unreliability of traceability data caused by data providers tampering with traceability data, and improves the security of traceability data.

S14, when a request for downloading the traceability data of the target object sent by the data query party is detected, determine whether the data query party has the right to download the traceability data.

In this embodiment, the request to download the traceability data of the target object means that the data query party requests to read the encapsulated NFT data. In order to ensure the security of the NFT data, it is necessary to determine whether the data query party has the right to download the data. Traceability data of the target object.

In an optional embodiment, the judging whether the data query party has the right to download the traceability data includes:

Parse and download the traceability data request of the target object, and obtain the NFT identification code of the traceability data;

Send the NFT identification code to the NFT application model of the smart contract, generate the application for the use of the NFT data, and write the application for the use of the NFT data into the blockchain;

Determine whether the application for the use of the NFT data is authorized;

When the application for the use of the NFT data is authorized, it is determined that the data query party has the right to download the traceability data;

When the application for the use of the NFT data is not authorized, it is determined that the data query party has no right to download the traceability data.

In this embodiment, the NFT application model of the smart contract can record the application for the use of the NFT data according to the data query party's request to download the traceability data of the target object and the NFT identification code of the traceability data, and store the NFT data The application for use of the NFT data is written into the blockchain, and the owner of the NFT data judges whether the application for use of the NFT data is authorized, and determines whether the data query party has the right to download the traceability data according to the judgment result. When the data query party has the right to download the traceability data, the data query party is authorized to download the traceability data.

Further, the method also includes:

When detecting a request for querying the traceability data sent by the data query party, obtain the traceability source code of the target object;

Query the corresponding traceability link according to the traceability source code, and match the depository information of all traceability nodes on the traceability link;

Sort the certificate storage information of all the traceability nodes according to a preset sorting method, and return the sorting result to the data query party.

In this embodiment, the certificate storage information includes the traceability source code of the traceability link, the NFT identification code of each traceability node, the application for using the NFT data, and other certificate storage records.

In this embodiment, when the data inquiring party queries the link certificate information of the traceability data, it does not need to obtain the authorization of the owner, and the traceability source of the traceability link of the traceability data can quickly query the information of the target object. All the evidence-based information improves the traceability of traceability data.

S15, when the data query party has the right to download the traceability data, generate an authorization message through the smart contract, and download the traceability data based on the authorization message.

In this embodiment, when the data inquiring party has the right to download the traceability data, the signature of the data inquiring party needs to be verified to further ensure the security of the traceability data.

In an optional embodiment, the generating an authorization message through the smart contract, and downloading the traceability data based on the authorization message includes:

The NFT authorization model of the smart contract receives the authorization message sent by the data provider, and writes the authorization message into the blockchain;

Verifying the signature of the data query party based on the authorization message;

When the signature verification is passed, the data query party downloads the traceability data from the data storage server based on the authorization message.

Further, the method also includes:

When the signature verification fails, the NFT authorization model writes a rejection authorization message into the blockchain.

S16, when the data query party does not have the right to download the traceability data, a denial of authorization message is generated through the smart contract.

In other optional embodiments, the method further includes:

When the data query party has the right to download the traceability data, the owner of the traceability data sends the traceability data to the data query party.

Further, after downloading the traceability data based on the authorization message, the method further includes:

Compare the hash value in the downloaded traceability data with the hash value stored in the corresponding traceability link;

When the hash value in the downloaded traceability data is completely consistent with the hash value stored in the corresponding traceability link, it is determined that the downloaded traceability data is correct;

When the hash value in the downloaded traceability data is inconsistent with the hash value stored in the corresponding traceability link, it is determined that the downloaded traceability data is abnormal.

In this embodiment, the data query party can obtain the traceability data in two ways. The first way is that when the traceability data has confidentiality requirements, the owner of the traceability data determines that the data query party has the right to download the traceability data. When the traceability data is directly sent to the data owner, the second method is that when the traceability data does not have confidentiality requirements, the owner of the traceability data authorizes the data query party to download the traceability from the data storage server. data, further improving the security of traceability data.

To sum up, the blockchain-based traceability data processing method in this embodiment creates a traceability link of the target object based on the original traceability data, and deploys the traceability link to the district through a smart contract. In the blockchain, the relationship between traceability data and the provider of the traceability data is established, and the blockchain is used to store the traceability data, so that the traceability data cannot be tampered with once it is on the chain, which improves the ability of subsequent evidence in the description. The security of traceability data on the traceability link. Parse the data provider's traceability data storage request to obtain the parsing result, and send the parsing result to the NFT generation model of the smart contract, generate the target NFT data of the data provider and store the certificate, and store the data provider's data. The scattered data is encapsulated into an inseparable whole in the form of NFT, and the traceability data and the data provider are credibly stored, which improves the location efficiency and accuracy of the traceability source of the traceability data. When the data query party has the right to download the traceability data, an authorization message is generated through the smart contract, and in the case of authorization, the traceability data is downloaded based on the authorization message, which improves the security of the traceability data.

Embodiment 2

FIG. 2 is a structural diagram of a blockchain-based traceability data processing device provided in Embodiment 2 of the present invention.

In some embodiments, the blockchain-based traceability data processing apparatus 20 may include a plurality of functional modules composed of program code segments. The program code of each program segment in the blockchain-based traceability data processing device 20 can be stored in the memory of the electronic device and executed by the at least one processor to execute (see description in FIG. 1 for details) based on The function of traceability data processing of blockchain.

In this embodiment, the blockchain-based traceability data processing apparatus 20 may be divided into multiple functional modules according to the functions performed by the apparatus 20 . The functional modules may include: a receiving and creating module 201 , a parsing module 202 , a generating module 203 , a judging module 204 , a downloading module 205 , a writing module 206 and a comparing module 207 . The module referred to in the present invention refers to a series of computer-readable instruction segments that can be executed by at least one processor and can perform fixed functions, and are stored in a memory. In this embodiment, the functions of each module will be described in detail in subsequent embodiments.

The receiving and creating module 201 is used to receive the original traceability data of the target object, create the traceability link of the target object based on the original traceability data, and deploy the traceability link into the blockchain through a smart contract, wherein , the traceability link contains traceability source code.

In this embodiment, in the process of processing the traceability data of the target object, a traceability link can be created for the target object, so as to realize the storage of the traceability data of the target object, and deploy the traceability data to the blockchain through a smart contract middle.

In this embodiment, the target object may be a certain product, for example, vaccine A, to create a traceability link for vaccine A, the traceability link corresponds to a unique traceability source code, and the traceability source code is used to uniquely identify all describe the target object.

In this embodiment, the smart contract provides functions such as link storage of traceability data, data storage, NFT data generation, NFT application, NFT authorization, data traceability query, etc. The smart contract includes NFT generation model, data Certificate deposit model, NFT application model, data deposit certificate model and NFT authorization model.

In an optional embodiment, the creation of the traceability link of the target object by the receiving and creating module 201 based on the original traceability data includes:

Identify the original traceability data, obtain the node name and data field information of each traceability node of the target object, and the data format of each data field information;

Each traceability node of the target object is converted into a traceability node of the corresponding traceability link, wherein the traceability node of the traceability link contains the node name and data field information of the traceability node, and the information of each data field information. Data Format;

Convert the reference relationship between each traceability node into the edge between the nodes in the corresponding traceability link, wherein, the edge between the traceability nodes in the traceability link is used as the reference between the traceability nodes in the traceability link relation;

The source tracing link of the target object is created according to the source tracing node of the source tracing link and the reference relationship between the source tracing nodes in the source tracing link.

In this embodiment, the original traceability data includes the node name and data field information of each traceability node of the target object, and the data format of each data field information, and the original data source data also includes each Traceability data provider information, original data characteristics and other attribute information of traceability data of each traceability node.

In this embodiment, the traceability link of the target object is created according to the original traceability data, and the traceability link is deployed into the blockchain through a smart contract, so as to establish a relationship between the traceability data and the provider of the traceability data. and use the blockchain to store the traceability data, so that the traceability data cannot be tampered with once it is on the chain, which improves the security of the traceability data that is subsequently stored on the traceability link.

The parsing module 202 is configured to, in response to the received traceability data deposit request from the data provider of the target object, parse the traceability data deposit request to obtain a parsing result.

In this embodiment, when the data provider needs to store the traceability data of the target object, the client of the data provider sends a request for the traceability data storage to the server, and the server parses the traceability data storage request, and obtains the analysis result.

In an optional embodiment, the parsing module 202 parses the traceability data storage request, and obtains a parsing result including:

Parse the traceability data deposit request, and obtain the target traceability source code and deposit data;

Matching the target traceability link corresponding to the target traceability source code from the preset database;

Send the certificate data to the smart contract, and the data certificate model of the smart contract parses the certificate data according to a preset analysis specification to obtain a parsing result.

In this embodiment, a database may be established in advance, and the database stores the traceability source codes of the traceability links of all target objects. When the data provider sends a traceability data storage request, the traceability data storage request contains the target Traceability source code and evidence data, the target traceability link can be quickly determined through the target traceability source code, the target traceability link corresponds to a preset parsing specification, and the certificate data is parsed according to the preset parsing specification , which is convenient for the management of the subsequent storage data, and provides the management efficiency of the storage data.

The generation module 203 is configured to send the analysis result to the NFT generation model of the smart contract, generate the target NFT data of the data provider and store the certificate.

In this embodiment, when the parsing result is stored for verification, the parsing result is sent to the NFT generation model of the smart contract, and the parsing result is NFT encapsulated to obtain the NFT data of the data provider.

In an optional embodiment, the generating module 203 sends the parsing result to the NFT generation model of the smart contract, and generating and storing the target NFT data of the data provider includes:

Identify the data type of each data field information in the parsing result;

When it is recognized that the data type of each data field information in the parsing result is text data, the information of each data field is sent to the NFT generation model of the smart contract; when it is recognized that the parsing result is in the NFT generation model When the data type of each data field information is not text data, calculate the hash value of each data field information, and send the hash value to the NFT generation model of the smart contract;

The NFT generation model of the smart contract generates the NFT identification code of the data provider, and the node name and data field information of the traceability node of the data provider corresponding to the target traceability link, and the information of each data field. Data format, filling the received information of each data field or hash value to the corresponding position of the traceability node of the data provider to obtain the first NFT data;

Fill in the information of the data provider in the field corresponding to the data provider to obtain the second NFT data;

The NFT generation model of the smart contract encapsulates the NFT identification code, the first NFT data and the second NFT data to generate the target NFT data of the data provider;

Send the target NFT data of the data provider to the data storage model of the smart contract, and write the target NFT data of the data provider into the blockchain for storage in the data storage model. .

In this embodiment, when the target NFT data of the data provider is encapsulated, the information of the data provider is bound, so that the target NFT data is more complete and the management efficiency of the NFT data is improved.

In this embodiment, the NFT generation model in the smart contract will receive each data field information, hash value, data provider information and NFT identification code, and these scattered data are encapsulated in the form of NFT as inseparable When the traceability data is abnormal, the NFT identification code of the abnormal traceability data is obtained, and the data source of the abnormal traceability data is determined to be the data provider corresponding to the NFT identification code, for example, in the vaccine logistics and transportation link , Operator A provides data on the quantity of goods out of the warehouse, Operator B provides transportation environment data such as temperature and humidity during transportation, Operator C provides transportation vehicle and driver information, and finally finds that the number of vaccines is abnormal, it can be quickly located. Operator A improves the location efficiency and accuracy of the traceability source of the traceability data. In addition, since the target NFT data of each data provider is taken as a whole, the traceability data and the data provider are credibly stored to avoid It solves the problem of unreliability of traceability data caused by data providers tampering with traceability data, and improves the security of traceability data.

The judgment module 204 is configured to judge whether the data query party has the right to download the traceability data when a request for downloading the traceability data of the target object sent by the data query party is detected.

In this embodiment, the request to download the traceability data of the target object means that the data query party requests to read the encapsulated NFT data. In order to ensure the security of the NFT data, it is necessary to determine whether the data query party has the right to download the data. Traceability data of the target object.

In an optional embodiment, the judging module 204 judging whether the data query party has the right to download the traceability data includes:

Parse and download the traceability data request of the target object, and obtain the NFT identification code of the traceability data;

Send the NFT identification code to the NFT application model of the smart contract, generate the application for the use of the NFT data, and write the application for the use of the NFT data into the blockchain;

Determine whether the application for the use of the NFT data is authorized;

When the application for the use of the NFT data is authorized, it is determined that the data query party has the right to download the traceability data;

When the application for the use of the NFT data is not authorized, it is determined that the data query party has no right to download the traceability data.

In this embodiment, the NFT application model of the smart contract can record the application for the use of the NFT data according to the data query party's request to download the traceability data of the target object and the NFT identification code of the traceability data, and store the NFT data The application for use of the NFT data is written into the blockchain, and the owner of the NFT data judges whether the application for use of the NFT data is authorized, and determines whether the data query party has the right to download the traceability data according to the judgment result. When the data query party has the right to download the traceability data, the data query party is authorized to download the traceability data.

Further, when detecting the traceability data request sent by the data inquiring party, obtain the traceability source code of the target object; query the corresponding traceability link according to the traceability source code, and match the traceability link on the source traceability link. The certificate storage information of all the traceability nodes; sort the certificate storage information of all the traceability nodes according to the preset sorting method, and return the sorting result to the data query party.

In this embodiment, the certificate storage information includes the traceability source code of the traceability link, the NFT identification code of each traceability node, the application for using the NFT data, and other certificate storage records.

In this embodiment, when the data inquiring party queries the link certificate information of the traceability data, it does not need to obtain the authorization of the owner, and the traceability source of the traceability link of the traceability data can quickly query the information of the target object. All the evidence-based information improves the traceability of traceability data.

The downloading module 205 is configured to generate an authorization message through the smart contract when the data query party has the right to download the traceability data, and download the traceability data based on the authorization message.

In this embodiment, when the data inquiring party has the right to download the traceability data, the signature of the data inquiring party needs to be verified to further ensure the security of the traceability data.

In an optional embodiment, the downloading module 205 generates an authorization message through the smart contract, and downloading the traceability data based on the authorization message includes:

The NFT authorization model of the smart contract receives the authorization message sent by the data provider, and writes the authorization message into the blockchain;

Verifying the signature of the data query party based on the authorization message;

When the signature verification is passed, the data query party downloads the traceability data from the data storage server based on the authorization message.

The writing module 206 is configured to, when the signature verification fails, the NFT authorization model writes a rejection authorization message into the blockchain.

Further, the generating module 203 is further configured to generate an authorization rejection message through the smart contract when the data query party does not have permission to download the traceability data.

In other optional embodiments, when the data query party has the right to download the traceability data, the owner of the traceability data sends the traceability data to the data query party.

Further, after downloading the traceability data based on the authorization message, the comparison module 207 is used to compare the hash value in the downloaded traceability data with the hash value stored on the corresponding traceability link; when When the hash value in the downloaded traceability data is exactly the same as the hash value stored in the corresponding traceability link, it is determined that the downloaded traceability data is correct; When the hash values of the downloaded data are not completely consistent, it is determined that the downloaded traceability data is abnormal.

In this embodiment, the data query party can obtain the traceability data in two ways. The first way is that when the traceability data has confidentiality requirements, the owner of the traceability data determines that the data query party has the right to download the traceability data. When the traceability data is directly sent to the data owner, the second method is that when the traceability data does not have confidentiality requirements, the owner of the traceability data authorizes the data query party to download the traceability from the data storage server. data, further improving the security of traceability data.

To sum up, the blockchain-based traceability data processing device in this embodiment creates a traceability link of the target object based on the original traceability data, and deploys the traceability link to the district through a smart contract. In the blockchain, the relationship between traceability data and the provider of the traceability data is established, and the blockchain is used to store the traceability data, so that the traceability data cannot be tampered with once it is on the chain, which improves the ability of subsequent evidence in the description. The security of traceability data on the traceability link. Parse the data provider's traceability data storage request to obtain the parsing result, and send the parsing result to the NFT generation model of the smart contract, generate the target NFT data of the data provider and store the certificate, and store the data provider's data. The scattered data is encapsulated into an inseparable whole in the form of NFT, and the traceability data and the data provider are credibly stored, which improves the location efficiency and accuracy of the traceability source of the traceability data. When the data query party has the right to download the traceability data, an authorization message is generated through the smart contract, and in the case of authorization, the traceability data is downloaded based on the authorization message, which improves the security of the traceability data.

Embodiment 3

Referring to FIG. 3 , it is a schematic structural diagram of an electronic device according to Embodiment 3 of the present invention. In a preferred embodiment of the present invention, the electronic device 3 includes a memory 31 , at least one processor 32 , at least one communication bus 33 and a transceiver 34 .

Those skilled in the art should understand that the structure of the electronic device shown in FIG. 3 does not constitute a limitation of the embodiments of the present invention, and may be a bus-type structure or a star-shaped structure, and the electronic device 3 may also include a ratio more or less other hardware or software, or a different arrangement of components is shown.

In some embodiments, the electronic device 3 is an electronic device that can automatically perform numerical calculation and/or information processing according to pre-set or stored instructions, and its hardware includes but is not limited to microprocessors, application-specific integrated circuits , programmable gate arrays, digital processors and embedded devices. The electronic device 3 may also include a client device, which includes but is not limited to any electronic product that can perform human-computer interaction with a client through a keyboard, a mouse, a remote control, a touchpad, or a voice-activated device, for example, Personal computers, tablets, smartphones, digital cameras, etc.

It should be noted that the electronic device 3 is only an example, and other existing or future electronic products that can be adapted to the present invention should also be included within the protection scope of the present invention, and are incorporated herein by reference .

In some embodiments, the memory 31 is used to store program codes and various data, such as the blockchain-based traceability data processing device 20 installed in the electronic device 3 , and is used during the operation of the electronic device 3 To achieve high-speed, automatic completion of program or data access. Described memory 31 comprises read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable Read-Only Memory, PROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, EPROM) , One-time Programmable Read-Only Memory (One-time Programmable Read-Only Memory, OTPROM), Electronically Erasable Rewritable Read-Only Memory (Electrically-Erasable Programmable Read-Only Memory, EEPROM), CompactDisc Read-Only Memory, CD-ROM) or other optical disk storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

In some embodiments, the at least one processor 32 may be composed of integrated circuits, for example, may be composed of a single packaged integrated circuit, or may be composed of multiple integrated circuits packaged with the same function or different functions, including one Or a combination of multiple central processing units (Central Processing Units, CPUs), microprocessors, digital processing chips, graphics processors, and various control chips. The at least one processor 32 is the control core (Control Unit) of the electronic device 3, and uses various interfaces and lines to connect various components of the entire electronic device 3, by running or executing the program stored in the memory 31 or modules, and call data stored in the memory 31 to perform various functions of the electronic device 3 and process data.

In some embodiments, the at least one communication bus 33 is configured to enable connection communication between the memory 31 and the at least one processor 32 and the like.

Although not shown, the electronic device 3 may also include a power source (such as a battery) for supplying power to various components. Optionally, the power source may be logically connected to the at least one processor 32 through a power management device, so that the power management device Implement functions such as managing charging, discharging, and power consumption. The power source may also include one or more DC or AC power sources, recharging devices, power failure detection circuits, power converters or inverters, power status indicators, and any other components. The electronic device 3 may further include a variety of sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be repeated here.

It should be understood that the embodiments are only used for illustration, and are not limited by this structure in the scope of the patent application.

The above-mentioned integrated units implemented in the form of software functional modules may be stored in a computer-readable storage medium. The above-mentioned software function modules are stored in a storage medium, and include several instructions to enable a computer device (which may be a personal computer, an electronic device, or a network device, etc.) or a processor (processor) to execute the methods described in the various embodiments of the present invention. part.

In a further embodiment, with reference to FIG. 2 , the at least one processor 32 can execute the operating device of the electronic device 3 and various installed application programs (such as the blockchain-based traceability data processing device 20 ). ), program code, etc., for example, the respective modules described above.

Program codes are stored in the memory 31, and the at least one processor 32 can call the program codes stored in the memory 31 to perform related functions. For example, each module described in FIG. 2 is a program code stored in the memory 31 and executed by the at least one processor 32, so as to realize the functions of the various modules to achieve blockchain-based traceability Purpose of data processing.

Exemplarily, the program code may be divided into one or more modules/units, and the one or more modules/units are stored in the memory 31 and executed by the processor 32 to complete the present invention. Application. The one or more modules/units may be a series of computer-readable instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the program code in the electronic device 3 . For example, the program code can be divided into a receiving and creating module 201 , a parsing module 202 , a generating module 203 , a judging module 204 , a downloading module 205 , a writing module 206 and a comparing module 207 .

In one embodiment of the present invention, the memory 31 stores a plurality of computer-readable instructions, and the plurality of computer-readable instructions are executed by the at least one processor 32 to realize the blockchain-based traceability data processing. Function.

Specifically, for the specific implementation method of the above instruction by the at least one processor 32, reference may be made to the description of the relevant steps in the embodiment corresponding to FIG. 1 , and details are not described herein.

In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the modules is only a logical function division, and there may be other division manners in actual implementation.

The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, and may be located in one place or distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or can be implemented in the form of hardware plus software function modules.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and range of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim. Furthermore, it is clear that the word "comprising" does not exclude other units or, and the singular does not exclude the plural. A plurality of units or devices stated in the present invention may also be implemented by one unit or device through software or hardware. The terms first, second, etc. are used to denote names and do not denote any particular order.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent substitutions can be made without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. A tracing data processing method based on a block chain is characterized by comprising the following steps:

the method comprises the steps of receiving original tracing data of a target object, creating a tracing link of the target object based on the original tracing data, and deploying the tracing link into a block chain through an intelligent contract, wherein the tracing link comprises a tracing code;

responding to a received source tracing data evidence storing request of a data provider of the target object, and analyzing the source tracing data evidence storing request to obtain an analysis result;

sending the analysis result to an NFT generation model of the intelligent contract, generating target NFT data of the data provider and storing the target NFT data;

when a tracing data request for downloading the target object sent by a data inquiry party is detected, judging whether the data inquiry party has the authority to download the tracing data;

and when the data inquirer has the authority to download the tracing data, generating an authorization message through the intelligent contract, and downloading the tracing data based on the authorization message.

2. The block chain-based tracing data processing method according to claim 1, wherein the sending the parsing result to the NFT generation model of the intelligent contract, and the generating and validating target NFT data of the data provider comprises:

identifying the data type of each data field information in the analysis result;

when the data type of each data field information in the analysis result is recognized as text data, each data field information is sent to an NFT generation model of the intelligent contract; when the data type of each piece of data field information in the analysis result is identified not to be text data, calculating a hash value of each piece of data field information, and sending the hash value to an NFT generation model of the intelligent contract;

the NFT generation model of the intelligent contract generates the NFT identification code of the data provider, and fills the received data field information or the hash value to the corresponding position of the tracing node of the data provider according to the node name and the data field information of the tracing node of the data provider corresponding to the target tracing link and the data format of the data field information to obtain first NFT data;

filling information of the data provider in a field corresponding to the data provider to obtain second NFT data;

the NFT generation model of the intelligent contract packages the NFT identifier, the first NFT data and the second NFT data to generate target NFT data of the data provider;

and sending the target NFT data of the data provider to a data evidence storage model of the intelligent contract, and writing the target NFT data of the data provider into the block chain for evidence storage in the data evidence storage model.

3. The blockchain-based traceback data processing method of claim 1, wherein the creating a traceback link for the target object based on the raw traceback data comprises:

identifying the original tracing data to obtain node names and data field information of all tracing nodes of the target object and a data format of each data field information;

converting each tracing node of the target object into a corresponding tracing node of a tracing link, wherein the tracing node of the tracing link comprises a node name and data field information of the tracing node and a data format of each data field information;

converting the reference relationship between the tracing nodes into edges between the nodes in the corresponding tracing links, wherein the edges between the tracing nodes in the tracing links are used as the reference relationship between the tracing nodes in the tracing links;

and creating the tracing link of the target object according to the tracing node of the tracing link and the reference relationship between the tracing nodes in the tracing link.

4. The block chain-based tracing data processing method of claim 1, wherein said parsing said tracing data evidence storage request to obtain a parsing result comprises:

analyzing the tracing data evidence storing request to obtain a target tracing code and evidence storing data;

matching a target tracing link corresponding to the target tracing code from a preset database;

and sending the deposit evidence data to an intelligent contract, and analyzing the deposit evidence data by a data deposit evidence model of the intelligent contract according to a preset analysis standard to obtain an analysis result.

5. The method for processing traceable data based on a blockchain according to claim 1, wherein the determining whether the data inquirer has permission to download the traceable data comprises:

analyzing a source tracing data request for downloading the target object, and acquiring an NFT (network file transfer) identification code of the source tracing data;

sending the NFT identification code to an NFT application model of an intelligent contract, generating a use application of the NFT data, and writing the use application of the NFT data into the block chain;

judging whether the use application of the NFT data is authorized or not;

when the NFT data use application obtains authorization, determining that the data inquirer has the authority to download the tracing data;

and when the NFT data use application is not authorized, determining that the data inquirer has no authority to download the tracing data.

6. The blockchain-based tracing data processing method according to claim 1, wherein the generating an authorization message through the intelligent contract and downloading the tracing data based on the authorization message includes:

an NFT authorization model of the intelligent contract receives an authorization message sent by a data provider and writes the authorization message into the block chain;

verifying the signature of the data inquirer based on the authorization message;

and when the verification is passed, the data inquirer downloads the source tracing data from the data storage server based on the authorization message.

7. The blockchain-based traceable data processing method according to any one of claims 1 to 6, further comprising:

when detecting the request for inquiring the tracing data sent by the data inquirer, acquiring the tracing code of the target object;

inquiring a corresponding tracing link according to the tracing code, and matching evidence storage information of all tracing nodes on the tracing link;

and sequencing the evidence storage information of all the tracing nodes according to a preset sequencing mode, and returning a sequencing result to the data inquiring party.

8. A block chain based traceable data processing apparatus, the apparatus comprising:

the system comprises a receiving and creating module, a source tracing module and a source tracing module, wherein the receiving and creating module is used for receiving original source tracing data of a target object, creating a source tracing link of the target object based on the original source tracing data, and deploying the source tracing link into a block chain through an intelligent contract, wherein the source tracing link comprises a source tracing code;

the analysis module is used for responding to the received source tracing data evidence storing request of the data provider of the target object, analyzing the source tracing data evidence storing request and obtaining an analysis result;

the generating module is used for sending the analysis result to an NFT generating model of the intelligent contract, generating target NFT data of the data provider and storing the target NFT data;

the judging module is used for judging whether the data inquiry party has the authority to download the tracing data or not when detecting a tracing data request for downloading the target object, which is sent by the data inquiry party;

and the downloading module is used for generating an authorization message through the intelligent contract when the data inquirer has the authority to download the tracing data, and downloading the tracing data based on the authorization message.

9. An electronic device, characterized in that the electronic device comprises a processor and a memory, and the processor is configured to implement the block chain based tracing data processing method according to any one of claims 1 to 7 when executing the computer program stored in the memory.

10. A computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the method for processing traceable data based on blockchain according to any one of claims 1 to 7.

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