What chain is Gusd on?

Excuse me, could you please clarify which blockchain network GUSD, or the Gemini Dollar, is currently operating on? As an investor or someone interested in cryptocurrency, it's important to understand the underlying technology and infrastructure supporting a particular digital asset. The blockchain network on which GUSD resides can impact factors such as transaction speed, security, and interoperability with other blockchains. Therefore, could you kindly provide some insight into the blockchain ecosystem where GUSD is currently deployed?