What chain is hyperliquid on?

I'm curious, could you please elaborate on which blockchain technology Hyperliquid is utilizing? It's important to understand the underlying infrastructure that supports such a dynamic and innovative financial platform. Is it built on a popular blockchain like Ethereum, or perhaps a lesser-known but equally capable alternative? Understanding the foundation will give us insight into the potential scalability, security, and interoperability of Hyperliquid's offerings. Could you please clarify?