Reliable decentralized oracle with mechanisms for verification and disputation

Limao Ma, Kosuke Kaneko, Subodh Sharma, Kouichi Sakurai

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

2 被引用数 (Scopus)

抄録

Smart contract using Blockchain technology provides a mechanism to automatically exchange 'cash' and 'service' according to programmed conditions without requiring reliable third-party intervention. This results in reduction of time and cost for complex contract execution. Some contract execution require external information outside Blockchain as a trigger to execute the code specifying process for a certain contract. However, because Blockchain technology itself does not provide a function to directly access such external information, these applications require a proxy system called 'oracle'. Oracle is in charge accessing external information, to verify it, and to write it on Blockchain. To avoid security incidents such as oracle writing malicious information on Blockchain, reliability of oracle must be required. This paper introduces a decentralized oracle equipping with verification and disputation mechanisms. To evaluate reliability of the proposed mechanisms, a simulation-based experiment was conducted. The experimental results showed that our solution could effectively suppress the interference of malicious participants and obtained reliable consensus results even if relatively many malicious participants joined in the consensus process on the proposed decentralized oracle.

本文言語英語
ホスト出版物のタイトルProceedings - 2019 7th International Symposium on Computing and Networking Workshops, CANDARW 2019
出版社Institute of Electrical and Electronics Engineers Inc.
ページ346-352
ページ数7
ISBN(電子版)9781728152684
DOI
出版ステータス出版済み - 11 2019
イベント7th International Symposium on Computing and Networking Workshops, CANDARW 2019 - Nagasaki, 日本
継続期間: 11 26 201911 29 2019

出版物シリーズ

名前Proceedings - 2019 7th International Symposium on Computing and Networking Workshops, CANDARW 2019

会議

会議7th International Symposium on Computing and Networking Workshops, CANDARW 2019
Country日本
CityNagasaki
Period11/26/1911/29/19

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Information Systems
  • Artificial Intelligence
  • Computer Networks and Communications

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