What network is Mintlayer on?

I'm curious, could you please clarify which network Mintlayer is operating on? I'm trying to understand the underlying infrastructure and technology that powers this cryptocurrency platform. Is it built on a popular blockchain like Ethereum, or is it a unique network with its own set of features and capabilities? I'm eager to learn more about the technical details behind Mintlayer and how it compares to other blockchain networks in the industry.