I have a strong interest in AI and my background is in machine learning and statistics in the first place. That said, I think the intersection between AI and blockchains is very narrow.
In general, blockchains, contracts require hard, predictable, rules. Most modern AI isn't a great fit for that. Some people have also envisioned data markets for AI on the blockchain... I'm skeptical, why does this need to be decentralized or censorship resistant?
I think the intersection lies in tooling and analysis : AI learning to synthetize adversarial inputs to test the security of smart-contracts, AI learning profitable deviation from the honest strategy in a consensus algorithm, etc.