Yes, I thought about setting this up in a more formal way but didn't do anything about it yet.

I was thinking about a simple website which acts as an escrow for the funds.

It could work like this:

1. Login via lightning or nostr
2. Stake any amount of sats at any day
3. The whole pool gets splits among the ones who picked the correct day according to their stake.

This means you can pick multiple days. The amount you bet just determines how much of the pool you get if you win.

Now that I think more about it... this doesn't sound too hard to code up, lol

Hopefully, I will start coding when I got home in a few hours lol