Is Gnosis on Ethereum?

Could you please clarify for me if the decentralized prediction market platform, Gnosis, is indeed built on the Ethereum blockchain? I've heard of its popularity in the crypto community and am curious about its underlying technology. Ethereum is a well-known platform for building decentralized applications, so it would make sense if Gnosis were utilizing its capabilities. Could you elaborate on the integration, if indeed Gnosis is an Ethereum-based project? I'd appreciate any additional details you can provide on this matter.