CN109934005A - A blockchain-based degree certification system and certification method - Google Patents

Abstract

The present invention provides a blockchain-based degree certification system, including: a data storage layer for data storage; a rule processing layer for realizing operations related to blockchain smart contracts, including a degree determination module, a credit statistics module and information Uplink module; business logic layer, receives, processes, and distributes data uploaded by users through business rules to ensure the normal operation of the system, including information data query module, information interaction module, data upload/update module and authority management module; user interface layer , located at the top layer of the system, provides users with information entry, query and display, including user information management module, information data entry module and visual display module. Corresponding degree certification methods are also provided, which do not use the central database and endorsement by third-party institutions, and do not rely too much on third-party institutions to overcome the problems caused by the lack of effective guarantee mechanisms for manual processing of degree certification within universities or simple information-based methods.

Description

A blockchain-based degree certification system and certification method

technical field

The invention relates to the field of computer technology, in particular to a blockchain-based degree certification system and certification method.

Background technique

The degree certificate is a certificate awarded by the relevant department to prove the professional knowledge and technical level of the student. The student's degree means that his educational level and academic level meet the specified requirements. A degree is one of the important standards for measuring personal ability in the current society, and it will have an important impact on an individual's job search and further education.

Blockchain is a new application mode of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. Blockchain has the characteristics of disintermediation, openness, autonomy, and information is difficult to tamper with. Once the information is verified and added to the blockchain, it is stored permanently, and modifications to the data by a single node are invalid. Since the era of blockchain 2.0, the value of smart contracts has been truly brought into play. A smart contract is a computer protocol designed to inform, verify, or execute a contract. Smart contracts allow for trusted transactions without third parties that are traceable and irreversible.

Using blockchain and smart contract theory to explore degree certification rules can effectively track the degree awarding process. Due to the fact that the data in the process of obtaining a degree is authentic and cannot be tampered with, the process of implementing the rules is safe and reliable, and the results of implementing the rules are credible, which effectively reduces the phenomenon of fake degrees in the society, urges schools to improve teaching effects, strengthen the quality of degrees, and promote the development of an excellent style of study. However, how to use blockchain technology to solve practical problems, the existing technology has not yet proposed a practical and effective degree certification system and certification method.

SUMMARY OF THE INVENTION

In order to solve these problems, the present invention provides a blockchain-based degree authentication system and authentication method. Traditional authentication systems and authentication methods use a central database and third-party organizations to endorse, and rely too much on third-party organizations to complete authenticity checks. However, the internal degree certification of colleges and universities usually uses manual processing or simple informatization methods, and lacks an effective guarantee mechanism. The invention uses the smart contract on the blockchain to code the degree awarding rules and place them on the blockchain, basically eliminating the possibility of human interference.

The purpose of the present invention is to provide a blockchain-based degree authentication system, including:

Data storage layer, used for data storage;

The rule processing layer is used to realize operations related to the blockchain smart contract, and the rule processing layer includes a degree determination module, a credit statistics module and an information uploading module;

The business logic layer receives, processes, and distributes the data uploaded by the user through business rules to ensure the normal operation of the system. The business logic layer includes an information data query module, an information interaction module, a data upload/update module, and a rights management module;

The user interface layer is located at the top layer of the blockchain-based degree certification system, and is used to provide users with information entry, query and display. The user interface layer includes a user information management module, an information data entry module and a visual display. module.

Preferably, the data storage layer uses a parallel mechanism of two data storage methods for data storage, and the two data storage methods are: a blockchain system and a blockchain database. The chain structure of the basic characteristics of the blockchain uses the consensus algorithm of distributed nodes to generate and update data, uses cryptographic encryption to ensure the security of data transmission and access, and uses smart contracts composed of automated script codes to execute business logic. And operate the data, the blockchain database is a combination of distributed database and blockchain technology, and the data storage layer stores the data in the blockchain system and the blockchain database respectively. , The non-core data that does not participate in degree certification is uploaded to the blockchain database through a dedicated interface, that is, directly stored in the blockchain database through the relevant driver; for the core data required for degree certification, through the rule processing layer The information on-chain module is uploaded to the blockchain system. The data on the blockchain system and the blockchain database can exchange information at any time through the synchronization interface to ensure the synchronous operation of the data and meet the consistency requirements. Contradictions or conflicts will occur; when querying relevant data, use the interface based on the relevant driver to query, and the business logic layer will encapsulate the remote call service in the message format, such as JSON-RPC--JSONRemote Protocol Call, based on the JSON message format. Remotely call services and send requests to interact with smart contracts.

Preferably, the degree determination module customizes different degree certification conditions according to the characteristics of each school and major, as well as the relevant laws and regulations of the state on degree awarding, and records it in Turing's complete degree awarding regulations and rules, and records the degree certification results. With limited sharing, authorized employers, universities, and regulatory agencies can query all or part of students' academic and degree information. The student's academic and degree information is obtained from the chain to ensure data security and effectiveness. The certification conditions use intelligent The contract mechanism is implemented and executed on the blockchain system. The smart contract mechanism follows the basic rules of the blockchain, that is, once the smart contract is successfully deployed, it cannot be changed; the credit statistics module is based on the training programs of different colleges and universities. , formulate a corresponding credit learning system, including statistical rules for different types of courses in public basic courses, compulsory courses, and elective courses, which need to be calculated by category, and provide a method for calling statistical results, which is convenient for the degree determination module to call; the The information uploading module is used to upload the processing results of each functional module to the blockchain system, while ensuring that only core information is stored on the chain.

Preferably, the information data query module processes the query requests of employers and colleges and universities for student performance information and degree awarding, calls the information interaction module to access data, and returns to the user interface layer; the information interaction module is used for processing data requests , first classify the request, according to the different types of data, the data of the blockchain system and the blockchain database are respectively called through the data upload/update module, processed into the required information, and sent to the information data query module for further processing ; The data uploading/updating module calls the data processing interface or the application program interface according to the received instruction, exchanges information with the rule processing layer and the data storage layer, and packages the data returned by the bottom layer and sends it back Other modules; the authority management module is used to manage the authority of various roles of university administrators, teachers, students, employers, and third-party regulatory agencies, and integrate data security mechanisms to ensure that data usage and storage processes are safe and controllable.

Preferably, the user information management module provides the collection, modification, addition and deletion of user information, and assists other layers to complete the authorization of newly added node users; the information data entry module provides university administrators to import students' personal information, The input function of course information, training plan and important information of assessment results; the visual display module performs data integration and statistics according to a large amount of data existing in the system, and finally displays it in the form of statistical charts or tables for employers, colleges and universities Administrators, students and third-party regulators for inquiries and references.

Preferably, the blockchain system adopts a combination of a specific consensus mechanism and a blockchain operating environment, the specific consensus mechanism includes a consensus engine and a general application interface, and adopts PoS with a BFT (Byzantine Fault Tolerance, Byzantine Fault Tolerance) mechanism. (Proof of Stake, Proof of Stake) algorithm; the blockchain operating environment provides an environment for using a virtual machine (such as EVM, Ethereum Virtual Machine, Ethereum Virtual Machine) to execute smart contracts written in a specific language (such as Solidity).

Preferably, the blockchain-based degree authentication system will assign a unique ID to a university that has completed registration and authorization, and the ID includes a pair of public keys representing the account address and a private key used for signature. The university is uploading student information. , grades, training programs, degree certificate encoding and other data into the blockchain database and blockchain system, use your own private key to sign the data and initiate transactions, when the number of nodes required by the consensus mechanism is satisfied. After confirmation, the data can be uploaded successfully.

The purpose of the present invention is also to provide a blockchain-based degree authentication method, comprising the following steps:

Step 1: Each university completes the registration, is authorized by the alliance blockchain system through consensus, joins the degree certification system based on the alliance blockchain and obtains a pair of public and private keys;

Step 2: Students start school report, college administrators are responsible for importing student information into the system;

Step 3: The university announces the student training plan and credit study rules in the system;

Step 4: After the training plan is publicized, the university writes the training plan into the smart contract, deploys it to the blockchain, and the smart contract takes effect;

Step 5: Students participate in the study and examination of the course according to the training plan, and obtain the assessment result;

Step 6: The person in charge of the university imports the student’s grades into the system, and students can log in to the system to make inquiries. If there is any objection, they need to submit an application for revision of grades within the time specified and/or adjusted by the administrator or the system. When the publicity period expires, the system will automatically The results are uploaded to the blockchain database for storage;

Step 7: The smart contract automatically executes the judgment rules according to the uploaded data to determine whether the students have passed this stage of learning and can enter the next stage of learning;

Step 8: After the student completes all stages of study, the smart contract automatically determines whether the student has obtained a degree certificate, and generates a unique certificate number for the certificate by calling a standard interface for non-homogeneous certificates for the obtained degree certificate. The number is bound to the final issued paper certificate number;

Preferably, the interface usage of the non-homogeneous token in the step 8 can be provided based on relevant standards (such as ERC721), so as to define the degree certificates of different students and store them on the blockchain system to ensure the uniqueness of the degree certificates , cannot be tampered with, each non-homogeneous token has a unique token number, which is bound to the valid degree certificate number issued by the school. When the university confirms that the student has completed all stages of study, the smart contract automatically determines whether the student is Obtain a degree, and generate a unique certificate number for the degree certificate by calling the standard interface of the non-homogeneous certificate for the obtained degree certificate; authorized employers or schools use the certificate number or non-homogeneous certificate number to query the student's certificate number. Degree conferral information and all grade information during the period of study.

Preferably, the method further includes:

Step 9: When applying for a job, the student submits the degree certificate to the employer, and the employer can check the authenticity of the degree certificate and the key data generated in the process of obtaining the certificate by entering the certificate number into the system, and complete the traceability of the degree information, including grades 4 and 6. , process assessment results and professional course examination results, students can view all relevant important data from the start of reporting to the school to the acquisition of qualifications through the system, and encryption algorithms are used in all data transmission and storage processes.

Beneficial effects of the present invention:

The provided blockchain-based degree certification method and implementation system are different from traditional certification methods that use a central database and third-party agency endorsements to ensure authenticity inquiries, rely too much on third-party agencies, and overcome the need for internal degree certification in colleges and universities. Using manual processing or simple informatization methods, the problem caused by the lack of an effective guarantee mechanism, the present invention uses the smart contract on the blockchain to code the degree awarding rules and place them on the blockchain, which basically eliminates the need for artificial possibility of interference.

The above and other objects, advantages and features of the present invention will be more apparent to those skilled in the art from the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. Objects and features of the present invention will become more apparent in view of the following description taken in conjunction with the accompanying drawings, in which:

1 is an architectural diagram of a blockchain-based degree authentication system according to an embodiment of the present invention;

FIG. 2 is an example architecture diagram of a blockchain-based degree authentication implementation according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for degree authentication based on blockchain according to an embodiment of the present invention.

Detailed ways

In order to make the present invention more obvious and comprehensible for its main points, the present invention will be further described below with reference to the accompanying drawings and examples. Numerous details and specific examples are set forth in the following description, which are provided in order to provide a more thorough understanding of the present invention and to fully convey the present invention to those skilled in the art. Although the present invention can be implemented in many other ways different from this description, those skilled in the art can make corresponding promotions without departing from the connotation of the present invention, so the present invention is not limited by the specific examples disclosed below and the specific drawings. limit.

The system architecture of the present invention is shown in FIG. 1, which is divided into a data storage layer, a rule processing layer, a business logic layer and a user interface layer.

1. The data storage layer is mainly responsible for data storage. There are two data storage methods in this system, namely:

1. Blockchain System (BCS), which is a chain structure that conforms to the basic characteristics of blockchain, uses the consensus algorithm of distributed nodes to generate and update data, and uses cryptographic encryption to ensure data transmission and access security, utilizing smart contracts composed of automated script code to execute business logic and manipulate data. The application built on the blockchain system has the characteristics of strong immutability and distributed consensus. The deployment and use of smart contracts ensure that code execution cannot be subject to manual intervention, improving system security and credibility.

2. Blockchain Database (BCD for short) is a combination of technical features of distributed database and blockchain. It has the advantages of traditional databases such as high throughput, low latency, large capacity, and easy query. It has the unique advantages of blockchain such as decentralization and data immutability.

In the actual operation of this degree certification system, a large number of transactions need to be processed online, especially after the final exam, each node needs to respond to the storage and query of 10,000 students and millions of data information in a timely manner. If more schools are added to the alliance chain, then The amount of data to be processed at the same time doubles. In addition, every year in the graduation season, employers and colleges and universities will collectively initiate a request for degree certification and query the certification results.

Due to the above reasons, the system has high requirements for delay, and a single block chain system cannot meet this actual demand. Therefore, the present invention innovatively implements the method of storing data in the block chain database BCD and block chain respectively. Solutions on the chain system BCS.

There are two situations in the data uploading process. For non-core data with a large amount of data that does not participate in degree certification, it is uploaded to the blockchain database BCD through a dedicated interface to achieve rapid data access and ensure that the data cannot be tampered with.

The core data required for degree certification such as grades and credits will be uploaded to the blockchain system BCS through the information on-chain module in the rule processing layer. The data can be traced back and cannot be modified, which can ensure the accuracy of the entire process of degree certification. fast.

The data on the blockchain database BCD and the blockchain system BCS can exchange information at any time through the synchronization interface to ensure that the data runs synchronously and meets the consistency requirements, and the stored data in each part will not produce contradictions or conflicts; use when querying related data. Query based on the relevant driver interface, and the business logic layer sends a request to interact with the smart contract through a remote invocation service in an encapsulated message format, such as JSON-RPC. Second, the rule processing layer, mainly to realize the operations related to blockchain smart contracts. The rule processing layer includes three functional modules: degree determination, credit statistics, and information uploading.

1. The degree determination module can customize different degree certification conditions according to the characteristics of each school and major, as well as the relevant laws and regulations of the state on degree awarding, and record them in Turing's complete degree awarding regulations. The certification process is fast, accurate and automatic. Execute without human intervention. The results of degree certification can be shared in a limited manner, and authorized employers, universities, and regulatory agencies can inquire about all or part of student academic and degree information. Key information is obtained from the chain to ensure data security and effectiveness. The above authentication rules can be implemented using different mechanisms, such as the use of smart contract mechanisms, which are executed on the blockchain system. Currently, the mainstream systems include Ethereum and Hyperledger. Smart contracts obey the basic rules of the blockchain that once deployed, changes cannot be made.

2. The credit statistics module formulates corresponding credit study systems according to the training programs of different majors in colleges and universities, which generally include statistical rules for different types of courses such as public basic courses, compulsory courses, and elective courses. The calling method is convenient for the degree determination module to call.

3. The information uploading module is responsible for uploading the processing results of each functional module to the blockchain system BCS, ensuring that only core information is stored on the chain, and can fulfill the system’s requirements for degree certification results that cannot be changed and traceable, without affecting the low latency of the system performance.

3. The business logic layer, which mainly receives, processes, and distributes the data uploaded by users through business rules to ensure the normal operation of the system. The business logic layer includes modules for information data query, information interaction, data upload/update, and authority management.

1. The information data query module processes the query requests of employers and universities for student achievement information and degree awarding, calls the information interaction module to access data, and returns to the user interface layer.

2. The information exchange module is mainly responsible for processing data requests. First, the requests are classified. According to the different types of data, the data of the blockchain system BCS and the blockchain database BCD are respectively retrieved through the data uploading/updating module, and processed into the required data. After the information is sent to the information data query module for further processing.

3. The data uploading/updating module calls the data processing interface or application program interface according to the received instructions, exchanges information with the rule processing layer and the data storage layer, and packages the data returned by the bottom layer and sends it back to other modules.

4. The authority management module is responsible for managing the authority of university administrators, teachers, students, employers, third-party regulators and other roles, and integrates data security mechanisms to jointly ensure that data use and storage processes are safe and controllable, and effectively avoid system The reasons lead to the occurrence of vicious incidents such as data theft, abuse, and leakage.

Fourth, the user interface layer, the top layer of the system, provides users with information input, query, display, etc., and is divided into three parts: user information management module, information data input module, and visual display module.

1. The user information management module provides operations such as collection, modification, addition, and deletion of user information, and can assist other layers to complete the authorization of newly added node users.

2. The information data input module can provide the input function for college administrators to import students' personal information, course information, as well as important information data such as training programs and assessment results.

3. The visual display module performs data integration and statistics according to a large amount of data existing in the system, and finally displays it in the form of statistical charts or tables for employers, university administrators, students and third-party regulatory agencies to query and reference.

In the above implementation process, this blockchain-based degree certification system will assign a unique ID to the university that has completed the registration and authorization, and the ID includes a pair of public keys representing the account addresses and private keys used for signatures. When colleges and universities upload data such as student information, grades, training programs, and degree certificate codes to the blockchain database BCD and blockchain system BCS, they need to use their own private keys to sign the data and initiate transactions. After the required number of nodes confirms the message, the data can be uploaded successfully. The data signature not only ensures the authenticity and reliability of the data, but also enables the person responsible for providing the data to be traced. Once there is a problem with the data, the responsible person can be found and held accountable. At the same time, the data needs to be confirmed by the majority of nodes before it can be uploaded to the chain, and the data cannot be tampered with. Consensus mechanism and asymmetric encryption technology can effectively reduce the possibility of traditional central third-party administrators tampering and forging data for certain benefits.

When the university confirms that the student has completed all stages of study, the smart contract automatically determines whether the student has obtained a degree, and generates a unique certificate number for the certificate by calling a standard interface for non-homogeneous certificates for the obtained degree certificate. Since the obtained certificate number is not homogeneous, it is unique and cannot be changed. The whole process of obtaining the degree certificate is open and transparent, the data is authentic and reliable, and the fake degree certificate number cannot be checked by the system. A token is an encrypted digital asset. In the blockchain, non-standardized goods and services can be tokenized to ensure the uniqueness of the bound items. In this example, a non-homogeneous token is used. The standard interface can generate a unique degree certificate number, which is convenient for the traceability and inquiry of the degree acquisition process and the anti-counterfeiting of the degree certificate.

Figure 2 is an architecture diagram of an example of a specific implementation of a blockchain-based degree authentication method. As shown in Figure 2, it is a specific implementation scheme of the system. The business logic layer can be composed of business logic codes written in Java. The blockchain system BCS can be implemented by the blockchain environment based on HyperledgerBurrow and tendermint. The blockchain database BCD can be deployed using the BigchainDB blockchain database.

The blockchain system described in this solution can adopt the Tendermint consensus mechanism and the HyperledgerBurrow blockchain operating environment. Their combination solves the problem of high latency in traditional single blockchain environments (such as Bitcoin, Ethereum, etc.) The time required for consensus. Tendermint includes a consensus engine and a general application interface. It adopts the PoS (Proof of Stake) algorithm with the Byzantine Fault Tolerance (Byzantine Fault Tolerance) mechanism. Compared with the traditional consensus mechanism, the consensus process is simpler and faster. The Hyperledger Burrow blockchain environment provides an environment for using virtual machines. In this embodiment, an EVM (Ethereum Virtual Machine) virtual machine is used, which can execute smart contracts in a specific language. For example, in this embodiment, it is written based on Solidity. Strong feasibility.

The data that does not need to participate in the calculation of the smart contract can be directly stored in the BigchainDB through the BigchainDBJavaDriver in this embodiment, and the BigchainDBJavaDriver can be used to query the data in the BigchainDB. The business logic layer communicates with the contract layer by sending requests through the encapsulated JSON-RPC (JSON Remote Protocol Call, a remote call service based on JSON message format). This example can fully meet the requirements of high throughput, low latency, and data that cannot be tampered with. BigchainDB conforms to the characteristics of blockchain databases and inherits the characteristics of modern distributed databases. It has the advantages of massive data storage, sub-second response delay, million times per second throughput, efficient query and permission management. At the same time, it has the unique core advantages of blockchain such as decentralization and immutability.

Figure 3 is a flowchart of a blockchain-based degree authentication method. As shown in Figure 3, a specific embodiment of the system may include the following steps:

Step 1: Each university completes the registration, is authorized by the alliance blockchain system through consensus, joins the degree certification system based on the alliance blockchain and obtains a pair of public and private keys.

Step 2: Students start school report, and college administrators are responsible for importing student information into the system.

Step 3: Universities publicize the student training plan and credit study rules in the system.

Step 4: After the training plan is publicized, the university writes the training plan into the smart contract in a certain way, deploys it to the blockchain, and the smart contract takes effect.

Step 5: Students participate in the study and examination of the course according to the training plan, and obtain the assessment result.

Step 6: The person in charge of the university imports the student’s grades into the system, and students can log in to the system to make inquiries. If there is any objection, they must submit an application for revision of grades within 15 working days (this time can be specified and adjusted by the administrator). When the publicity period expires, the system will automatically upload the results to the blockchain database BigchainDB for storage.

Step 7: According to the uploaded data, the smart contract automatically executes the judgment rules to determine whether the students have passed this stage of learning and can enter the next stage of learning.

Step 8: After the student completes all stages of learning, the smart contract automatically determines whether the student has obtained a degree certificate, and generates a unique certificate number for the certificate by calling a standard interface for non-homogeneous certificates for the obtained degree certificate. This number can be bound to the final issued paper certificate number.

The present invention can use the non-homogeneous token interface provided based on the ERC721 standard to define the degree certificates of different students, and store them on the blockchain system to ensure the uniqueness and non-tampering of the degree certificates. Each pass has a unique pass number, which can be bound to the valid degree certificate number issued by the school. Authorized employers or schools can use the certificate number or non-homogeneous pass number to query the student's degree award information and the period of study. all grade information. Different from the query websites provided by traditional centralized regulatory agencies, these data are distributed and stored in each node of the blockchain, and all operations such as data addition, deletion, modification, and viewing can be traced to the source, which effectively avoids the single problem that is difficult to solve by the central database. point attack, data tampering, etc.

Step 9: When students apply for a job, they hand over the degree certificate to the employer, and the employer can check the authenticity of the degree certificate and the key data generated in the process of obtaining the certificate by entering the certificate number into the system, and complete the traceability of degree information, such as grades 4 and 6. , process assessment results and professional course examination results, etc., to facilitate data users to better arrange student positions, and regulatory agencies to grasp the teaching situation of colleges and universities and strengthen management. In addition, students can also view all relevant important data through the system from the start of the school report to the acquisition of qualifications. Encryption algorithms are used in all data transmission and storage processes, which effectively protects the authenticity of data and the privacy of students' personal information.

The blockchain-based degree authentication system and authentication method provided in this embodiment are different from the traditional authentication methods that use a central database and a third-party agency for endorsement, avoid the phenomenon of relying too much on a third-party agency to complete the authenticity query, and overcome the The internal degree certification of colleges and universities usually uses manual processing or simple informatization methods, and the problems caused by the lack of an effective guarantee mechanism are used in this embodiment to code the degree awarding rules using smart contracts on the blockchain and place them in the blockchain system. Above, basically remove the possibility of human interference.

While the invention has been described with reference to specific illustrative embodiments, it is not to be limited by these embodiments but only by the appended claims. It should be understood by those skilled in the art that changes and modifications can be made to the embodiments of the present invention without departing from the scope and spirit of the present invention.

Claims (10)

1. A blockchain-based degree certification system, characterized in that it comprises: Data storage layer, used for data storage; The rule processing layer is used to realize operations related to the blockchain smart contract, and the rule processing layer includes a degree determination module, a credit statistics module and an information uploading module; The business logic layer receives, processes and distributes data uploaded by users through business rules to ensure the normal operation of the system. The business logic layer includes an information data query module, an information interaction module, a data upload/update module and a rights management module; The user interface layer is located at the top layer of the blockchain-based degree certification system, and is used to provide users with information entry, query and display. The user interface layer includes a user information management module, an information data entry module and a visual display. module. 2. A blockchain-based degree certification system according to claim 1, wherein the data storage layer adopts a parallel mechanism of two data storage modes for data storage, and the two data storage modes are respectively Yes: a blockchain system and a blockchain database, the blockchain system adopts a chain structure that conforms to the basic characteristics of the blockchain, uses the consensus algorithm of distributed nodes to generate and update data, and uses cryptographic encryption to generate and update data. Ensure the security of data transmission and access, use smart contracts composed of automated script codes to execute business logic and operate data, the blockchain database is a combination of distributed database and blockchain technology, the data storage layer Store the data in the blockchain system and the blockchain database respectively. For the non-core data with a large amount of data that does not participate in degree certification, upload it to the blockchain database through a dedicated interface, that is, directly store it in the blockchain through the relevant driver. In the blockchain database; for the core data required in the degree certification, the information on the chain module in the rule processing layer is uploaded to the blockchain system, and the data on the blockchain system and the blockchain database are synchronized by The interface conducts information exchange at any time to ensure that the data runs synchronously and meets the requirements of consistency, and each part of the stored data will not produce contradictions or conflicts; when querying relevant data, use the interface based on the relevant driver to query, and the business logic layer encapsulates the message by encapsulating it. A remote call service in the format sends a request to interact with a smart contract. 3. A blockchain-based degree certification system according to claim 1, characterized in that: the degree determination module customizes different degrees according to the characteristics of each school and major, as well as the relevant laws and regulations of the state on degree awarding. Degree certification conditions are recorded in Turing's complete degree awarding regulations and rules, and the results of degree certification are shared in a limited manner, and authorized employers, universities, and regulatory agencies can conduct all or part of the student's academic and degree information. Students' academic and degree information is obtained from the chain to ensure data security and effectiveness. The authentication conditions are implemented using a smart contract mechanism and executed on the blockchain system. The smart contract mechanism complies with the basic rules of the blockchain, that is, the smart contract Once the deployment is successful, it cannot be changed; the credit statistics module formulates corresponding credit study systems according to the training programs of different majors in colleges and universities, including the statistical rules for different types of public basic courses, compulsory courses and elective courses, which need to be carried out in different categories. Calculate and provide a calling method of statistical results, which is convenient for the degree determination module to call; the information uploading module is used to upload the processing results of each functional module to the blockchain system, and at the same time ensure that only core information is stored on the chain. . 4. A blockchain-based degree certification system according to claim 1, characterized in that: the information data query module processes the query requests of employers and universities for student achievement information and degree awarding, and invokes information interaction The module accesses data and returns to the user interface layer; the information interaction module is used to process data requests, first classify the requests, and according to different types of data, the blockchain system and blocks are respectively called through the data uploading/updating module. The data of the chain database is processed into the required information and sent to the information data query module for further processing; the data uploading/updating module calls the data processing interface or application program interface according to the received instructions, and communicates with the rule processing layer. It exchanges information with the data storage layer, and packages the data returned by the bottom layer and sends it back to other modules; the authority management module is used to manage the roles of university administrators, teachers, students, employers, and third-party regulatory agencies. Permissions, and integrate data security mechanisms to ensure that data usage and storage processes are safe and controllable. 5. A blockchain-based degree certification system according to claim 1, characterized in that: the user information management module provides collection, modification, addition, and deletion operations of user information, and assists other layers to complete new Join the authorization of node users; the information data input module provides the input function for university administrators to import students' personal information, course information, training plans and important information data of assessment results; the visual display module is based on a large amount of data existing in the system. Data integration and statistics are finally displayed in the form of statistical charts or tables for employers, university administrators, students and third-party regulatory agencies to query and reference. 6. A blockchain-based degree certification system according to claim 1, wherein the blockchain system adopts a combination of a specific consensus mechanism and a blockchain operating environment, and the specific consensus mechanism includes a consensus The engine and general application interface adopt the PoS (Proof of Stake, Proof of Stake) algorithm with Byzantine fault tolerance mechanism; the blockchain operating environment provides an environment for using a virtual machine to execute smart contracts written in a specific language. 7. A blockchain-based degree certification system according to claim 1, characterized in that: the blockchain-based degree certification system will assign a unique ID to a university that has completed registration and authorization, and the ID includes A pair of public key representing the account address and a private key used for signature. Colleges and universities use their own private key pair when uploading student information, grades, training programs, and degree certificate encoded data to the blockchain database and blockchain system. The data is signed and a transaction is initiated. When the number of nodes required by the consensus mechanism confirms the message, the data can be uploaded successfully. 8. A blockchain-based degree authentication method using the degree authentication system described in any one of claims 1-7, characterized in that it comprises the following steps: Step 1: Each university completes the registration, is authorized by the alliance blockchain system through consensus, joins the degree certification system based on the alliance blockchain and obtains a pair of public and private keys; Step 2: Students start school report, college administrators are responsible for importing student information into the system; Step 3: The university announces the student training plan and credit study rules in the system; Step 4: After the training plan is publicized, the university writes the training plan into the smart contract, deploys it to the blockchain, and the smart contract takes effect; Step 5: Students participate in the study and examination of the course according to the training plan, and obtain the assessment result; Step 6: The person in charge of the university imports the student’s grades into the system, and students can log in to the system to make inquiries. If there is any objection, they need to submit an application for revision of grades within the time specified and/or adjusted by the administrator or the system. When the publicity period expires, the system will automatically The results are uploaded to the blockchain database for storage; Step 7: The smart contract automatically executes the judgment rules according to the uploaded data to determine whether the students have passed this stage of learning and can enter the next stage of learning; Step 8: After the student completes all stages of study, the smart contract automatically determines whether the student has obtained a degree certificate, and generates a unique certificate number for the certificate by calling a standard interface for non-homogeneous certificates for the obtained degree certificate. The number is bound to the final issued paper certificate number. 9. The authentication method according to claim 8, characterized in that: in the step 8, the interface usage of the non-homogeneous token can be provided based on relevant standards, so as to define the degree certificates of different students, in the blockchain system. To ensure the uniqueness and immutability of the degree certificate, each non-homogeneous certificate has a unique certificate number, which is bound to the valid degree certificate number issued by the school. When the university confirms that the student has completed all stages of After learning, the smart contract automatically determines whether the student has obtained a degree, and generates a unique certificate number for the degree certificate by calling the standard interface of the non-homogeneous certificate for the degree certificate obtained; authorized employers or schools use the certificate number or The non-homogeneous token number queries the student's degree award information and all grade information during the study period. 10. The authentication method according to claim 8, characterized in that the method further comprises: Step 9: When applying for a job, the student submits the degree certificate to the employer, and the employer can check the authenticity of the degree certificate and the key data generated in the process of obtaining the certificate by entering the certificate number into the system, and complete the traceability of the degree information, including grades 4 and 6. , process assessment results and professional course examination results, students can view all relevant important data from the start of reporting to the school to the acquisition of qualifications through the system, and encryption algorithms are used in all data transmission and storage processes.