What chain is PYTH on?

Could you please provide some clarification? Could you elaborate on which blockchain network the PYTH token or protocol is operating on? I'm trying to understand the specific technological environment in which PYTH functions. Is it deployed on a widely used public blockchain like Ethereum or Solana? Or perhaps it's operating on a lesser-known but still reputable blockchain platform? Additionally, is there any particular reason why PYTH chose this specific chain for its implementation? Your insights would be greatly appreciated.