Applied Sciences: A Blockchain-Based OCF Firmware Update for IoT Devices Posted on: October 2, 2020Abstract: https://www.mdpi.com/2076-3417/10/19/6744 HTML Version: https://www.mdpi.com/2076-3417/10/19/6744/htm PDF Version: https://www.mdpi.com/2076-3417/10/19/6744/pdf