BDoTs: Blockchain-based Evaluation Scheme for Online Teaching under COVID-19 Environment

Abstract

Online teaching has become mandatory across the globe during the COVID-19 pandemic situations. Hence, there is a need to uplift the online teaching technology for data privacy preservation and transparency in the system. Various online teaching schemes have been proposed by various authors, but they lack in handling decentralised governance, transparency, trust and communication issues. Blockchain (BC) Technology has emerged to provide decentralised solution in solving the real-time problems. Motivated by these facts, in this paper, we propose a BC-based decentralised online teaching scheme known as BDoTs. The security and data privacy issues in BDoTs are resolved by developing smart contracts (SCs) over BC. Moreover, the data storage cost issues are handled by the Inter Planetary File System (IPFS) protocol for Off-Chain data storage. Moreover, we present a real-time BC simulation and deployment of SC in Truffle suite. Results show that the proposed scheme performs better in comparison to the state-of-the-art schemes in terms of scalability, data storage cost, and packet loss.

A Comprehensive Review of the Technological Solutions to Analyse the Effects of Pandemic Outbreak on Human Lives

“…COVID-19 has widened the gap between higher-income countries and lower or lowermiddle-income countries by exacerbating pre-existing disparities-fewer opportunities for learners from poor or rural areas, difficulties for a girl child to receive an education, and poor education facilities for students with disabilities [124]. Closures of educational institutions hamper the provision of essential services to children and communities, including access to nutritious food, affect the ability of many parents to work, increase risks of violence against women and girls, unequal access to educational resources, thus adversely affecting the socio-economic condition of the country.…”