Is VeChain built on Ethereum?

Could you please clarify something for me? I've been hearing a lot about VeChain recently, and I'm curious about its technological foundation. Is VeChain actually built on the Ethereum blockchain? Or does it operate independently, utilizing its own unique architecture? I'm trying to understand the relationship between these two platforms and how they might interact, if at all. Could you provide some insight into this matter? I'd greatly appreciate your expertise in this area.