融入课程质量的在线学习成果认证区块链模型及实现机理研究

Research on Blockchain Model and Realization Mechanism of Online Learning Achievement Certification Integrated with Course Quality

推进在线学习成果认证平台建设有助于构建终身教育体系,加快学习型社会建设。文章通过对比国内外相关研究工作的优缺点,基于区块链技术设计了一种融入课程质量的在线学习成果认证模型,即基于课程质量和在线学习成果的双向考核标准的区块链模型。该模型使用“主从多链”的架构实现数据的分类存储,减少区块信息的冗余量,促进在线学习成果与课程质量的双向评价,解决了课程质量评价缺席而导致认证结果公平性和可信度不高的问题。同时,基于变色龙哈希技术实现区块链网络中部分信息的可更改性,消除了数据不可篡改而带来的系统灵活性不佳的弊端,进一步拓展了区块链技术在学习成果认证方面的应用深度。

Promoting the construction of online learning achievement certification platform is helpful to build a lifelong education system and accelerate the construction of learning-oriented society.By comparing the advantages and disadvantages of relevant research work at home and abroad,an online learning achievement certification model integrating the course quality is designed based on block chain technology,that is,a model based on two-way assessment standards of course quality and learning achievement.The model uses the"master-slave multi-chain"architecture to realize the classified storage of data,reduces the redundancy of block information,promotes the two-way evaluation of online learning outcomes and course quality,and solves the problem of low fairness and credibility of certification results caused by the absence of course quality evaluation.At the same time,based on the chameleon hash technology,this model realizes the modification of some information in blockchain,eliminates the disadvantages of poor system flexibility brought by the tamper-proof data,and further expands the application of blockchain technology in learning achievement certification.