What chain is GMX on?

Could you elaborate on the underlying blockchain technology that GMX, a cryptocurrency platform, utilizes? I'm curious to understand the specific chain it's built on as it can provide insights into its scalability, transaction speed, and overall network security. Additionally, knowing the chain can also help assess its potential for integration with other decentralized applications and projects within the crypto ecosystem. Therefore, could you clarify which blockchain GMX operates on and elaborate on its significance?