What chain is THETA on?

Could you please clarify for me which blockchain network does THETA operate on? I'm interested in understanding the technological infrastructure that underlies this cryptocurrency. Could you elaborate on its specific integration and functionality within that particular blockchain? I'm curious to know if it utilizes any unique features or advantages provided by the chosen platform. Additionally, is there any significance or benefit to its placement on this specific chain compared to other potential options? Thank you for your assistance in explaining this aspect of THETA.