Is XYO built on Ethereum?

I'm curious about the underlying technology that supports XYO. Specifically, I'm wondering if XYO is built on the Ethereum blockchain. Could you provide some insight into this, perhaps explaining why Ethereum was chosen as the platform, if that's indeed the case? And if not, what alternative blockchain technology does XYO utilize, and why was that chosen? Understanding the foundational technology behind XYO would be greatly appreciated.