Implementation Of BlockChain-based Grade Management System And Research On Sidechain Frame

The current grades and other teaching evaluation information are managed through a centralized server,and related data storage is highly bound to manager and databases at all levels,resulting in problems such as data information being tampered with and deleted,and the operation of related personnel cannot be effectively monitored.Due to the large amount of score data in colleges and universities,it is difficult to find out when data is modified.The blockchain system has the characteristics of being difficult to tamper with,and the data stored through the blockchain has good security.With regard to the application of blockchain to performance management,this paper conducts the following research:(1)This paper proposes a blockchain-based grade management system,which mainly completes the design and implementation of the school’s internal part.The school’s internal part of the performance system uses the storage characteristics of the blockchain.Specifically,the proposed system uses the difficult-to-tamper feature in the blockchain to solve the problem that grades and other related information are easily tampered or deleted.According to the actual needs,the record sending mechanism was modified,and the scores were agreed according to the overall curriculum.At the same time,operation records were added to record the data operations of users at all levels in the system.At the core layer,this article combines the needs of the school to design a peer-to-peer network required to build a blockchain.According to the principles of the blockchain,a specific block structure is designed to meet the needs of consensus and coexistence of multiple records.At the application layer,a specific record structure is designed to store one of a variety of possible information,including grades,education,and operations,according to the needs of the use scenario.Store all kinds of records in a proprietary blockchain,and use the extension of the blockchain to make the storage of recorded data securely and effectively protected.Provide the necessary interface for node operation as needed to facilitate monitoring and management of node operation.(2)This paper proposes a blockchain storage optimization framework.The framework eliminates all nodes in the blockchain,distributes the resources in the blockchain to the network,and reduces the number of backups.As the number of backups is reduced,the probability of successful malicious attacks will increase,so the validity of the block resource storage needs to be verified,that is,the effective storage check between the stored nodes is also to continuously ensure that the resource is modified.In order to reduce the impact of the verification block on the main chain,the side chain technology is introduced to perform the verification process,to avoid competition with the normal resource on-chain,and to reduce the storage of irrelevant information by the node.In order to facilitate query and ensure node reliability,the network structure in the framework is a chord ring hybrid P2P network,which adds a certain number of special nodes to form a licensed alliance chain network to ensure the effective operation of the framework.