What are burn notes?

A burn note is a self-destructing way to share a note with someone who does not use PrivacyNotes. The app encrypts the content with a one-time key and gives you a link. The key travels in the link fragment, which browsers never send to servers, so our server stores ciphertext it cannot read.

The first time the link is opened, the server hands over the ciphertext and deletes it in the same step: one read, then it is gone. Unopened links expire on their own after 24 hours. Either way, nothing lingers.