What is Layer 3 protocol called?

Excuse me, could you please clarify what you mean by "Layer 3 protocol"? In the context of computer networking, Layer 3 typically refers to the Network Layer, which is responsible for packet forwarding and routing. However, in the realm of cryptocurrency and finance, the term "Layer 3 protocol" is not a universally recognized or standardized term. Could you perhaps provide some additional context or specify which blockchain or decentralized system you're referring to? Without that information, it's difficult to give a precise answer to your question.