Is Rollbit on Solana?

Could you please clarify for me whether Rollbit is indeed operating on the Solana blockchain? I'm particularly interested in understanding if Rollbit has chosen to leverage Solana's scalability, low fees, and fast transaction speeds in its platform. As a cryptocurrency enthusiast, I'm always on the lookout for innovative projects utilizing cutting-edge blockchain technology, and Solana has garnered significant attention in recent times. So, is Rollbit indeed part of the Solana ecosystem, or are they utilizing a different blockchain technology for their operations?