If you guys wanna stick, I will be posting a few ideas about my next riddle here, so I can also get some feedback. I have two prototypes with Bitcoin done, but the next one might be based on the Lightning Network, so that I can distribute more rewards to more players. Make sure to have your Lightning powered wallets ready to receive sats.
It's a great idea adding Lightning Network, this can save on fees and somehow increase privacy if done correctly.
You should make next puzzle slightly harder this time, or o_e_l_e_o is going to get his wallet full of coins, make it a bit more challenging but not super hard

I was thinking of a small project to make a "Bitcoin calendar" where people can see when was the time different events happened. I've seen timelines with years and all but the dates would be cool. Kind of like calendars with the name of saints but instead with bitcoin events, if you're interested let me know. No bounty on this one probably, just a cool project to support historical pieces of information.
I think I saw something similar created before, in different form of infographics and images.
Problem with Bitcoin calendar is that it needs to have regular updates to be up to date, and most of those projects are few years old.