Blockchain-Based Badge Award with Existence Proof
Blockchain-Based Badge Award with Existence Proof
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DOI：
10.3390/app9122473
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发表时间：
2019-06-02
影响因子：
2.7
通讯作者：
Kwon, Oh-Young
中科院分区：
文献类型：
--
作者：
Choi, Min;Kiran, Shinde Rupali;Kwon, Oh-Young
在本文中，我们提出了一个使用区块链技术进行教育绩效评估的徽章奖励系统。学习者将获得徽章，这是证明在学习方面的预定水平的进展。所有的徽章都存放在背包中，背包是存放和展示获得的徽章的环境。徽章是不可变的，可验证的，以及刚性。在教育系统中使用徽章使教育更加有趣，以技能为基础，并适应变化。我们工作的主要贡献在于与Openbadge规范的兼容性以及数字徽章授予和区块链之间的集成合作平台。我们的系统实现与IMS全球学习联盟的Open Badges兼容，该联盟用于在各种平台上获得，颁发和奖励徽章。徽章受到IMS标准的信任，通过网络验证获得徽章的标准，与传统教育系统相比，整个过程是透明的。此外，我们系统中的所有徽章颁发活动都记录在区块链中。一旦存储，内容就不能被篡改。此后，任何人都可以通过区块链检查徽章的有效性。我们的平台将是有用的远程学习以及时间和地点独立的学习。实验结果如下。在基于比特币的数字徽章发布平台上，授予徽章所需的执行时间为24.53 s，而在基于以太坊的数字徽章发布平台上，授予徽章的执行时间仅为3.86 s。它也可以用于职业生涯管理和个人历史。学习者可以获得工作所需的当前知识。通过这个平台，终身学习也将成为可能。
In this paper, we present a badge awarding system for performance assessment in education using blockchain technology. Learners will be awarded badges, which are certified for a predetermined level of progress in terms of learning. All the badges are stored in a backpack, which is an environment for storing and presenting the obtained badges. Badges are immutable and verifiable as well as rigid. The use of badges in the education system makes education more interesting, skill-based, and adaptable to changes. The key contribution of our work is in terms of compatibility with Openbadge specification and integrated cooperating platform between digital badge awarding and blockchaining. Our system implementation is compatible with Open Badges of IMS Global Learning Consortium, which is used to earn, issue, and award badges across various platforms. The badges are trusted by the IMS standard, the criteria to earn a badge is verified through the network, and the overall process is transparent compared to the traditional education system. Moreover, all badge awarding events in our system are recorded in a blockchain. Once stored, the contents cannot be tampered with. Thereafter, anyone can check the validity of the badge through the blockchain. Our platform will be useful for distance learning as well as time and location independent learning. The experimental results are as follows. On a Bitcoin-based digital badge publishing platform, the execution time required to award the badge is 24.53 s, while on the Ethereum-based digital badge publishing platform, the execution time to award the badge is only 3.86 s. It can also be used for career management and personal history. The learners can obtain the current knowledge required for a job. Lifelong learning will be also possible with this platform.