What are the three essential elements of ENS?
Could you please elaborate on the three crucial elements that constitute the foundation of ENS? I'm interested in understanding how these elements work together to enable the functionality and uniqueness of the Ethereum Name Service. Could you also explain how each element contributes to the overall architecture and usage of ENS? Additionally, how does ENS ensure the security and reliability of its operations? It would be helpful if you could provide a concise yet comprehensive description of each element and its role within the system.