Last updated 2026.
Your collection and notes are stored on your device. We do not have an account system and do not have access to your collection.
When you scan a banknote, the photo is sent to our processing service to identify the note and look up its value, then the result is returned to your device. The image is processed to provide the feature, is not linked to your identity, and is never used for advertising or tracking.
Value estimates are based on current eBay listings (asking prices) and are not a formal appraisal. "Sell this note" opens an eBay search in your browser — Provena never handles payments or takes a commission.
We do not sell your data. Questions: xxhhuan2022@163.com