What network is Kujira on?

Excuse me, could you please clarify which network Kujira is operating on? I'm quite interested in understanding its infrastructure and the blockchain technology it utilizes. I'm aware that there are various networks like Ethereum, Binance Smart Chain, or even Polygon, and it would be great if you could specify which one Kujira is leveraging for its operations. It would provide valuable insights into its scalability, security, and potential for growth.