What chain is pokt on?

I'm curious to know, what blockchain network does POKT operate on? Given its importance in the decentralized world of Web3 and its role in facilitating seamless interoperability between various blockchains, it's crucial to understand the underlying infrastructure that POKT relies on. Is it Ethereum? Polkadot? Perhaps a lesser-known but equally capable chain? Understanding this detail is essential for those considering investing in or integrating with POKT, so I'd appreciate a concise yet comprehensive answer that sheds light on this aspect.