Legal
Cookies policy
Proof of Data sets no tracking cookies and loads no third-party scripts. It keeps a few entries in your browser's storage so the site works. Last updated 19 October 2026.
What is stored
| Name | Type | Purpose | Kept |
|---|---|---|---|
pod:consent | Local storage, necessary | Your cookie choice | Until you clear it |
pod:intro | Session storage, necessary | Plays the opening drawing once per visit | Until the tab closes |
| Session (when uploads open) | Cookie, necessary | Keeps you signed in to your embedded account | 30 days |
| App preferences | Local storage, optional | Last tab and last quote | Until you clear it |
Your choice
Necessary storage cannot be turned off without breaking the site. Optional storage is off unless you allow it.
Sealing keys
The test keys made in the app's Seal tab live only in memory and disappear when you leave the page.