What chain is SuperRare on?

Could you please elaborate on the underlying blockchain technology that SuperRare utilizes? I'm curious to understand the specifics of the chain it is built on. Given the significance of blockchain technology in the crypto-art and non-fungible token (NFT) space, knowing the specific chain SuperRare leverages would provide valuable insight into its operations, security measures, and potential for growth. Additionally, understanding the chain also helps in assessing its compatibility with other platforms and the overall ecosystem. So, what chain is SuperRare on, and how does it contribute to its unique value proposition?