Decentralized Reputation System on a Permissioned Blockchain for E-Commerce Reviews

Carl Kugblenu, Petri Vuorimaa

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

6 Citations (Scopus)


E-commerce has experienced rapid growth and adoption over the decade and continues to do so. Customer reviews of products have been a driving force in making purchasing decisions but credibility of these reviews have been put into question as a result of influx of fraudulent reviews. Blockchain is a technology that promises a decentralized trust based environment where records are managed in an immutable manner. This paper presents a novel decentralized reputation system that utilizes smart contracts on a permissioned blockchain. We present a background on current reputation systems with a focus on the current limitations and security vulnerabilities. Our approach will address the centralization and credibility of E-commerce reviews in current reputation systems. We then discuss the limitations of such a system and highlight solutions to these limitations.
Original languageEnglish
Title of host publication17th International Conference on Information Technology–New Generations (ITNG 2020)
EditorsShahram Latifi
Number of pages6
ISBN (Electronic)978-3-030-43020-7
ISBN (Print)978-3-030-43019-1
Publication statusPublished - 12 May 2020
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Information Technology: New Generations - Las Vegas, United States
Duration: 6 Apr 20208 Apr 2020
Conference number: 17

Publication series

NameAdvances in Intelligent Systems and Computing
ISSN (Print)2194-5357


ConferenceInternational Conference on Information Technology: New Generations
Abbreviated titleITNG
Country/TerritoryUnited States
CityLas Vegas
Internet address


  • Reputation systems
  • Blockchain
  • Smart contracts
  • e-Commerce
  • Hyperledger


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