What Blockchain is Ronin on?

Could you elaborate on the underlying blockchain technology that Ronin utilizes? I'm curious to know if it's built on an existing, widely adopted blockchain platform or if it's a proprietary solution tailored specifically for the Ronin ecosystem. Understanding the blockchain foundation is crucial in assessing the scalability, security, and interoperability of the network. Could you provide some insights into the choice of blockchain and its benefits for Ronin's users and developers?