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ProofStamp Photo
Take a photo you can check later.
Keep the original photo and its ProofStamp.
Before you take the photo
Location and note are optional. Nothing is uploaded.
Camera ready
Creating your ProofStamp…
Keep this page open. Your photo is staying on this device.
Unable to finish the ProofStamp
Your captured photo is still available on this page.
Photo ready
Captured photo
Location not included
You can still use this ProofStamp without location.
Not saved yet
Keep the original photo and its ProofStamp.
Next
Save the photo with its ProofStamp
The ZIP contains the original photo and the files needed to check it later.
Look for in Files or Downloads.
Not saved yet.
Email ProofStamp optional
Your email app will be asked to open with the ProofStamp ready to send.
Back from email?
Your photo and ProofStamp are still here. If you did not send the email, try again or copy the ProofStamp.
Advanced details
Technical values recorded with this photo. Opening this section only changes what is shown on screen.
Record hash
Email note
Requesting an email handoff does not prove a message was sent. A received email can provide a dated copy of the ProofStamp.
On this device Recent photos Open
Check a ProofStamp
Does this photo still match?
Choose the Photo + ProofStamp ZIP you saved with the photo.
Choose the saved ZIP
Choose the Photo + ProofStamp .zip file you saved after taking the photo.
Check against an earlier receipt optional
Paste a ProofStamp receipt you saved or emailed earlier to confirm this is the same record.
Advanced details
Technical users can check the photo and capture.json separately.
ProofStamp Photo
How it works
Keep the photo. Keep its ProofStamp. Check the pair later.
- Take the photo.ProofStamp keeps the exact photo bytes it receives and creates a record for them on your device.
- Save Photo + ProofStamp.The ZIP contains the original photo,
capture.json, and a readable receipt. Keep the ZIP somewhere you can find later. - Email the ProofStamp if useful.Email is optional. A received email can give you a dated copy of the ProofStamp without sending the photo.
- Check later.Choose the saved ZIP. A match means the photo still matches its accompanying record. An earlier receipt or email link can additionally connect it to that earlier ProofStamp.
What a match does not prove
It does not prove who took the photo, that the scene is true, or that device-reported time or location was accurate. Without an earlier receipt or reference, a matching ZIP does not establish when the ProofStamp first existed.