What chain is Dymension on?

As a keen observer of the cryptocurrency landscape, I'm curious to know the underlying technology powering the innovative Dymension project. Given the vast array of blockchains out there, it's essential to understand the technological foundation that underpins a project's ambitions. So, my question is: What chain is Dymension built on? Is it a well-established blockchain like Ethereum, or perhaps a newer entrant that promises enhanced scalability and functionality? Understanding this fundamental detail can provide valuable insights into the project's potential and future growth trajectory.