Evaluation of Blockchain Model for Educational Certificate Using Continuous-Time Markov Chain

Evaluation of Blockchain Model for Educational Certificate Using ContinuousTime Markov Chain
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© 2021 by IJETT Journal
Volume-69 Issue-11
Year of Publication : 2021
Authors : Emmanoel Pratama Putra Hastono, Gede Putra Kusuma
DOI :  10.14445/22315381/IJETT-V69I11P208

How to Cite?

Emmanoel Pratama Putra Hastono, Gede Putra Kusuma, "Evaluation of Blockchain Model for Educational Certificate Using ContinuousTime Markov Chain," International Journal of Engineering Trends and Technology, vol. 69, no. 11, pp. 61-70, 2021. Crossref, https://doi.org/10.14445/22315381/IJETT-V69I11P208

Abstract
The advantages of blockchain enable various research in educational certificate management. However, most of the research conducted only proposes the applications without analyzing their performance in real-life situations. This paper proposes a blockchain system model for educational certificate management that uses the Practical Byzantine Fault Tolerance consensus algorithm. The model is represented as a continuous-time Markov chain, specified using the PRISM model checking tool, and evaluated through observations of the values the probability of all transactions processed completely within a certain amount of time. Results demonstrate that increasing the number of transactions stored in one block corresponds to increasing the time required for the probability of completion to be 0.9 or more and that the maximum probability of completion is achieved when the block size is equal to the total transaction count. The conclusion is that the proposed model should be set up to have each block size containing one transaction.

Keywords
Blockchain Model, Information Systems, Computer Simulation, Model Checking, Markov Chain.

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