This document discusses securing and enabling smart capabilities for Internet of Things (IoT) devices using blockchain and artificial intelligence. It covers challenges facing IoT implementation including lack of standardization, security and privacy issues, and integrating diverse data formats from different sensors and devices. The document proposes that combining blockchain and AI can help address these challenges by decentralizing IoT networks, adding an extra layer of security to device authentication and data transmission, and powering smart analytics on the large volumes of data generated by IoT. Overall, the document argues that blockchain and AI will be important technologies to realize the full potential of a secure, smart IoT.