Is XDC built on Ethereum?

Could you elaborate on whether the XDC cryptocurrency is indeed built on the Ethereum blockchain? I've heard varying opinions regarding its underlying technology and infrastructure. Clarifying this matter would be instrumental in understanding its functionality, scalability, and potential integration with other Ethereum-based projects. Is there a definitive statement or evidence that indicates XDC is indeed an Ethereum-based token or does it operate on a separate blockchain entirely? Thank you for your assistance in clearing up this confusion.