Is koinos layer 1?

Excuse me, but could you clarify for me whether Koinos is indeed considered a layer 1 blockchain solution? I've heard differing opinions on this matter, and I'm eager to gain a clearer understanding of its positioning within the blockchain landscape. Does Koinos serve as a foundational layer for other blockchains to build upon, akin to Bitcoin or Ethereum's roles as layer 1 protocols? Or is it perhaps designed to operate at a different layer, offering specialized services or functionalities? I would greatly appreciate any insights you can provide on this topic.