eCite Digital Repository

Towards interconnected blockchains: a comprehensive review of the role of interoperability among disparate blockchains


Lohachab, A and Garg, S and Kang, B and Amin, MB and Lee, J and Chen, S and Xu, X, Towards interconnected blockchains: a comprehensive review of the role of interoperability among disparate blockchains, ACM Computing Survey, 54, (7) Article 135. ISSN 0360-0300 (2021) [Refereed Article]

Copyright Statement

© 2021 Association for Computing Machinery

DOI: doi:10.1145/3460287


Unprecedented attention towards blockchain technology is serving as a game-changer in fostering the development of blockchain-enabled distinctive frameworks. However, fragmentation unleashed by its underlying concepts hinders different stakeholders from effectively utilizing blockchain-supported services, resulting in the obstruction of its wide-scale adoption. To explore synergies among the isolated frameworks requires comprehensively studying inter-blockchain communication approaches. These approaches broadly come under the umbrella of Blockchain Interoperability (BI) notion, as it can facilitate a novel paradigm of an integrated blockchain ecosystem that connects state-of-the-art disparate blockchains. Currently, there is a lack of studies that comprehensively review BI, which works as a stumbling block in its development. Therefore, this article aims to articulate potential of BI by reviewing it from diverse perspectives. Beginning with a glance of blockchain architecture fundamentals, this article discusses its associated platforms, taxonomy, and consensus mechanisms. Subsequently, it argues about BIís requirement by exemplifying its potential opportunities and application areas. Concerning BI, an architecture seems to be a missing link. Hence, this article introduces a layered architecture for the effective development of protocols and methods for interoperable blockchains. Furthermore, this article proposes an in-depth BI research taxonomy and provides an insight into the state-of-the-art projects. Finally, it determines possible open challenges and future research in the domain.

Item Details

Item Type:Refereed Article
Keywords:blockchain, distributed systems, blockchain interoperability, taxonomy, consensus mechanisms, DLT
Research Division:Information and Computing Sciences
Research Group:Distributed computing and systems software
Research Field:Distributed systems and algorithms
Objective Division:Information and Communication Services
Objective Group:Communication technologies, systems and services
Objective Field:Communication technologies, systems and services not elsewhere classified
UTAS Author:Lohachab, A (Mr Ankur Lohachab)
UTAS Author:Garg, S (Dr Saurabh Garg)
UTAS Author:Kang, B (Professor Byeong Kang)
UTAS Author:Amin, MB (Dr Muhammad Bilal Amin)
UTAS Author:Lee, J (Ms Junmin Lee)
ID Code:145954
Year Published:2021
Web of Science® Times Cited:2
Deposited By:Information and Communication Technology
Deposited On:2021-08-13
Last Modified:2022-08-29

Repository Staff Only: item control page