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Smart city article details

Title	Blockchain-Of-Blockchains: An Interoperable Blockchain Platform For Ensuring Iot Data Integrity In Smart City
ID_Doc	12718
Authors	Rahman M.S.; Chamikara M.A.P.; Khalil I.; Bouras A.
Year	2022
Published	Journal of Industrial Information Integration, 30
DOI	http://dx.doi.org/10.1016/j.jii.2022.100408
Abstract	We propose a hierarchical blockchain-based platform for ensuring the integrity of smart city Internet-of-Things (IoT) data and blockchain interoperability in this paper. The well-defined structural hierarchy of managing organizations in a smart city face several data management issues. The integration of emerging technologies, such as (IoT), has introduced more complexity to data maintenance in the smart city. At present, cloud-based information systems have become the norm for managing IoT data. Due to the centralized administrative control, the cloud-based information management is untrusted. Hence, it fails to guarantee the integrity of IoT data and traceability of operations to achieve transparency within the smart city organizations. Adoption of blockchain-based information systems can be viable solution to address these challenges. However, it introduces a new challenge of interoperability of transactions among different smart city organizations. In this paper, we introduce a decentralized hierarchy of blockchains, named Blockchain-of-Blockchains (BoBs), for ensuring data integrity and blockchain interoperability at the same time. We implement the proposed concept using Hyperledger Fabric and Ethermint as a proof-of-concept for evaluating the performance of the proposed concept.
Author Keywords	Blockchain; Blockchain interoperability; Blockchain of blockchains; Hierarchical blockchain; Industrial data; Industrial Internet-of-Things; Internet-of-Things; IoT data integrity; Smart city

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