A Distributed Efficient Blockchain Oracle Scheme for Internet of Things

TL;DR

This paper introduces a distributed blockchain oracle scheme for IoT that enhances efficiency and security by combining TEE and ordinary devices, improving data acquisition speed and system performance.

Contribution

It proposes a novel distributed oracle architecture integrating TEE and ordinary devices, optimizing node-data source matching for better efficiency in IoT blockchain applications.

Findings

Reduces average response time by approximately 9.92%

Improves system scalability and data acquisition efficiency

Enhances security through trusted execution environments

Abstract

In recent years, blockchain has been widely applied in the Internet of Things (IoT). Blockchain oracle, as a bridge for data communication between blockchain and off-chain, has also received significant attention. However, the numerous and heterogeneous devices in the IoT pose great challenges to the efficiency and security of data acquisition for oracles. We find that the matching relationship between data sources and oracle nodes greatly affects the efficiency and service quality of the entire oracle system. To address these issues, this paper proposes a distributed and efficient oracle solution tailored for the IoT, enabling fast acquisition of real-time off-chain data. Specifically, we first design a distributed oracle architecture that combines both Trusted Execution Environment (TEE) devices and ordinary devices to improve system scalability, considering the heterogeneity of IoT devices. Secondly, based on the trusted node information provided by TEE, we determine the matching relationship between nodes and data sources, assigning appropriate nodes for tasks to enhance system efficiency. Through simulation experiments, our proposed solution has been shown to effectively improve the efficiency and service quality of the system, reducing the average response time by approximately 9.92\% compared to conventional approaches.