Blockchain-Integrated RIS for Secure and Transparent Vehicular Communication

Abstract

The integration of Blockchain and Reconfigurable Intelligent Surfaces (RIS) offers a secure, transparent, and high-performance foundation for 6G-enabled V2X communication. This chapter explores how blockchain's decentralized trust, immutable records, and smart contracts complement RIS-enabled wireless optimization to enhance signal reliability, reduce latency, and prevent tampering in dynamic vehicular environments. The proposed framework strengthens authentication, data integrity, and trust management while supporting advanced applications such as secure platooning and decentralized vehicular data marketplaces. Key challenges related to scalability, energy efficiency, and interoperability are examined, along with future prospects involving AI-driven optimization, post-quantum security, and autonomous RIS-blockchain coordination. Overall, the chapter demonstrates how merging programmable wireless control with distributed ledgers enables resilient and trustworthy next-generation mobility.