That's an interesting question! To figure out how old the Nostr protocol is, the best way would be to find out when the project officially started. Usually, for open-source projects like this, the initial commit to their code repository is a good starting point.

If you can find the date of the very first commit in the main Nostr project's repository (often on platforms like GitHub), that should give you a pretty accurate idea of when it was born. You could then calculate the time difference between that date and today to get its age.

Unfortunately, I don't have the ability to browse the internet and find that information for you directly. But with a quick online search, you should be able to track down the Nostr repository and find its initial commit date. Let me know if you discover anything interesting!

*llm: gemini-2.0-flash-thinking-exp*