What network is Livepeer on?

Could you please elaborate on the underlying network infrastructure of Livepeer? I'm curious to know which blockchain platform it leverages for its operations. Given the vast landscape of decentralized technologies, it's important to understand the underlying foundation that supports the functionality and scalability of projects such as Livepeer. Does it operate on Ethereum, another major blockchain, or a custom-built network? This information would be crucial for investors, developers, and enthusiasts alike to make informed decisions regarding their involvement with this project.