Actually, we posted the original vision in Sep 2021 at https://blog.spiceai.org/posts/2021/09/07/introducing-spice.... for AI-driven applications and discussed needing a good source of data at https://blog.spiceai.org/posts/2021/12/05/ai-needs-ai-ready-....

We believe blockchain data is one of the most interesting time-series datasets to work in developing an AI-driven application platform, because it's continuous, well-structured, has many applications, and is open to index. Regardless of views on crypto, from a purely technical/data feed perspective, it's quite useful for testing time-series systems.