Blockchain-Secured Iot Frameworks for Low-Latency Smart Cities and Distributed Edge Networks

Resumen

The rapid proliferation of Internet of Things (IoT) devices has accelerated the development of smart cities by enabling intelligent transportation systems, smart healthcare infrastructures, environmental monitoring platforms, energy management networks, and public safety applications. As urban environments become increasingly interconnected, ensuring secure, reliable, and low-latency communication among billions of distributed devices has emerged as a critical challenge. Traditional cloud-centric IoT architectures often suffer from high communication delays, centralized vulnerabilities, scalability limitations, and privacy concerns, making them unsuitable for time-sensitive smart city applications. Edge computing has emerged as an effective solution by bringing computational resources closer to data sources, thereby reducing latency and improving real-time decision-making capabilities. However, distributed edge environments introduce new security risks related to unauthorized access, data tampering, identity management, and trust establishment among heterogeneous devices.

Blockchain technology offers a decentralized and tamper-resistant framework capable of enhancing security, transparency, and trust within IoT ecosystems. Through distributed ledger mechanisms, cryptographic validation, and consensus protocols, blockchain enables secure data exchange and decentralized device authentication without relying on centralized authorities. Nevertheless, conventional blockchain implementations often introduce computational overhead and transaction latency that can negatively impact the performance of resource-constrained IoT systems. Therefore, developing lightweight blockchain architectures capable of supporting low-latency communication remains an important research challenge.

This study investigates blockchain-secured IoT frameworks designed for low-latency smart cities and distributed edge networks. The proposed framework integrates edge computing, lightweight blockchain protocols, smart contracts, and decentralized security mechanisms to enhance system reliability while maintaining real-time responsiveness. The research examines architectural components, security models, latency optimization techniques, and deployment strategies applicable to next-generation urban infrastructures. Furthermore, the study evaluates the role of blockchain-enabled edge computing in supporting secure communication, efficient resource management, and scalable smart city operations. The findings indicate that blockchain-integrated edge architectures can significantly improve security, trust management, and data integrity while reducing communication delays and supporting the growing demands of intelligent urban ecosystems.