HYBRID BLOCKCHAIN ARCHITECTURE FOR SECURE AND SCALABLE IOT DATA MANAGEMENT

Abstract

Massive emergence of Internet of Things (IoT) environments has aggravated the problems in terms of safe and scaled and efficient data administration. To address the weaknesses posed by the traditional centralized blockchain and single layer systems, the paper will show a hybrid blockchain architecture that integrates the public and private blockchain layer. The prototype of sensitive data management was implemented on the permissioned blockchain and the prototype of integrity validation on the public blockchain. It is experimentally evaluated because the suggested architecture improves the data processing speed by 40 percent, reduces the storage costs by 30 percent, and the authenticity of data by 99.9 percent. The analysis of security demonstrates that the 95 percent successful cyber-attack is mitigated in connection with the centralized IoT systems. The fact that scalability testing with higher density of devices demonstrated that this system can only increase its latency by 12 percent as the number of connected devices increase 50,000-fold, however, the sheer existence of the system demonstrates its soundness. To obtain the holistic analysis, Hybrid Blockchain Effectiveness Index (HBEI) was developed that comprised of four dimensions of security (0.40), scalability (0.30), data management (0.20), and interoperability (0.10) with the overall effectiveness score being 0.91. An economic analysis reveals that the investment is 4 times paid, which shows the economic sustainability of the utilization of hybrid blockchain. The findings confirm that hybrid blockchain infrastructure offers a moderate solution regarding decentralization, performance effectiveness, and enhanced security. The investigation offers a numerical data that can be referenced to the introduction of the hybrid blockchain integration as an effective and cost-effective approach in the future to manage the IoT data infrastructure in smart cities, healthcare, and IoT applications in the industries.