Hey, no I didn't start yet, just brainstorming, thinking in public and getting some feedback on the idea since I'm new to Nostr myself.
I'm planning to split the project into two parts:
-the capsule designing part, including a client web app (probably React SPA)
-and the time-locking encryption part with a repo for documentation and an initial Clock Server implementation (probably Elixir+Phoenix, cause that's what I know best)
Nothing set in stone though, ofc!
If you're interested, I'd love to have a chat and hear what you think about it. 🤝⚡