The blockchain has seen explosive growth in the past few years, especially with the advent of cryptocurrency. The blockchain has also become popular in the IoT space, as a mechanism to verify the integrity of data collected by sensor nodes. In this presentation, Mohammed provides an overview of the blockchain and its different uses and applications in the IoT. He also provides a demonstration on a Toradex SoM and carrier board running Torizon which implements a simple blockchain solution. In this example, data is collected on the device and added to the blockchain. Finally, the integrity of the data on the blockchain is verified.