Disclosed are various examples of utilizing blockchain for tracking and auditing of systems and processes that involve Internet-of-Things (IoT) devices. In one example, an IoT event definition is installed on a gateway. The IoT event definition includes a threshold value associated with an asset type. The gateway receives sensor data from an IoT device associated with the asset type. The gateway determines that the IoT device triggered an IoT event based on the sensor data and the IoT event definition. The sensor data indicates that the IoT device triggered the IoT event based on the threshold value. The gateway transmits, to a management service, a request to record an IoT event to a blockchain. The request includes the sensor data. A block that includes the sensor data is recorded to the blockchain.