Proof-of-GoS: An Efficient GoS-Based Consensus Algorithm for IoT

With the advancement of 5G networks, the deployment of Internet of Things (IoT) technology has seen significant growth. Blockchain technology, recognized for its strong security features, is increasingly utilized within the IoT domain. However, the current IoT landscape is characterized by challenges, such as substantial resource consumption, limited throughput capacity, and insufficient security protocols, which hinder its optimal performance. Toward addressing such problems, we propose a consensus algorithm called Proof-of-GoS (PoG) based on the Grade of Service (GoS), in which a node must have a service score over a set score threshold to be allowed to join the consensus process. The correct behavior of a node results in a reward, while any malicious actions result in penalties. Finally, we simulate a network to evaluate the performance and security of PoG and compare it with several existing consensus algorithms. The experimental findings indicate that the proposed PoG consensus algorithm retains the fundamental security properties of blockchain and outperforms the state-of-the-art consensus mechanisms.