What network is Alchemy Pay on?

Could you please elaborate on the network that Alchemy Pay operates on? I'm curious to understand the technological underpinnings of this cryptocurrency payment solution. Specifically, is it built on a popular blockchain like Ethereum or does it utilize its own proprietary network? Understanding the network infrastructure would help me gauge the potential scalability, security, and interoperability of Alchemy Pay with other cryptocurrencies and payment systems. Thank you for clarifying this aspect.