Abstract: A system configured to assist blockchain-based Internet of Things (IoT) applications connect with one another and share data securely and privately is described. The system includes an IoT network configured to interact with a blockchain network. The IoT network includes IoT systems, which include IoT devices that comprise sensors. The blockchain network includes a mainchain and sidechains. Each sidechain includes a consensus protocol that run on each node and is configured to increase data and synchronization between nodes. The consensus protocol utilizes a reasoning mechanism to enable each node to deduce states of events on other nodes, a gossip algorithm to synchronize data between nodes, and a vector clock algorithm in a knowledge graph deployed on every node to allow the event created during synchronization to be linked to the previous two events.