Collaborative Messaging Protocol with Multiple Intermediate Nodes

Selfish nodes can collapse autonomous distributed network systems, such as ad hoc network systems or peer-to-peer network systems. In our previous work [1], [2], we proposed a messaging system model in which a single intermediate node relays a message. In this paper, we propose a novel model with multiple intermediate nodes that allow a message to reach a destination node. We introduce blockchain technology to distributedly record nodes' actions, such as sending messages, relaying messages, and receiving messages. We examine frauds in our proposal protocol to demonstrate that selfish nodes cannot commit frauds.