What chain is Astar on?

Could you please elaborate on the specific context in which the question "What chain is Astar on?" arises? As a professional in cryptocurrency and finance, I'm familiar with the term "Astar" being associated with a blockchain project, but without further details, it's difficult to provide a precise answer. Assuming Astar refers to a decentralized application (dApp) or a blockchain protocol, the answer to "What chain is Astar on?" would depend on its underlying technology and architecture. Typically, blockchain projects can either be built from scratch as their own independent chains, or they can be deployed on existing blockchains like Ethereum, Polkadot, or Binance Smart Chain, among others. So, in the spirit of a questioner, I would pose the inquiry in a way that encourages clarification: "Could you please specify whether Astar is an independent blockchain or if it's deployed on an existing blockchain platform? If it's deployed, which platform is it built on?" This approach would help narrow down the possible answers and provide a more informed response.