A beautiful UI and URLs for verifying data, shows hierarchy right up to root with proof links
Rate limiting, prevent abuse from bad actors
Base URLs for each leaf chain operator in central registry, so block proof URLs don't break when chain operator URL inevitably changes
Hierarchy of days -> hours -> individually operated chain.
Blocks closer to root are public and verifiable. Blocks closer to leaf are usually private, and verifiable only if the user wants to present the proof.
Things you can notarize
Your files
Sensor data like video feeds, GPS traces, heart rate etc.
Features
Things you can notarize
Proof channels
Data format