PUFZIN: Secure and scalable blockchain-IoT with PUFs and zero-knowledge proofs

PUFZIN is a blockchain-IoT (Internet of Things, the network of connected devices) security system that combines PUFs (physical unclonable functions, unique hardware-based identifiers that are hard to forge) with zero-knowledge proofs (a cryptographic method where one party proves knowledge of something without revealing the actual information) to create a secure and scalable network. The research, published in July 2026, addresses how to protect IoT devices and blockchain systems from unauthorized access and tampering.