First 10 videos: pick the topics

We'll make one video a week, then cut short clips from it.

Suggest topics and vote with 👍. Focus on education first, then the product. Some starting points:

1. What can anyone see on a blockchain, and what can't they?
2. Public-key encryption in 3 minutes
3. What is threshold cryptography? (Warden)
4. A sealed letter for a solo trek, demonstrated on testnet
5. Why immutable contracts: "not even us"
6. Digital estate: what happens to your passwords when you die
7. What a "check-in" is, and why the minimum interval is 1 hour
8. How an executor works

Every video must pass the content checklist.