Vitalik has published "The promise and challenges of crypto + AI applications," discussing the ways blockchain and artificial intelligence can be combined and the potential challenges. The article presents four integration methods and introduces representative projects for each direction. There are differences in the core characteristics of AI and blockchain, so it's necessary to balance aspects such as data ownership, transparency, monetization capabilities, and energy costs when combining them. Currently, many AI applications are gaming-related, involving interaction with AI and training characters to better fit individual needs. At the same time, there are projects exploring the use of blockchain features to create better artificial intelligence. Decentralized computing power is also a popular direction but still faces challenges. Overall, the AI track needs to find projects with competitiveness and long-term value.