Performance of Smart Contract-based Digital Twins for the Internet of Things

Despite its rapid growth, the Internet of Things (IoT) still faces significant challenges related to interoperability, transparency and security. To address these issues, we propose the utilization of smart contract-based Digital Twins (DTs) "hosted" in the Hyperledger Fabric blockchain network, while leveraging the Web of Things paradigm for interoperability. Thus, our solution includes several notable features, such as decentralization, auditability and security. However, implementing DTs using Distributed Ledger Technologies (DLTs) introduces certain overheads. In this paper, we assess the feasibility and evaluate the performance of smart contract-based DTs using a set of Key Performance Indicators (KPIs). Our results demonstrate that, although DLT-induced overheads, such as latency, are present, they remain manageable for IoT use cases.