Record integrity
Verify a VeriWalk record.
Every record is stamped so you can prove it hasn't been touched since the day it was captured. Here's exactly how that works.
DATUM 01 Two marks on every record
A serial number and a fingerprint.
When you finish a scan, VeriWalk assigns the record two things that travel with it for the rest of its life: a serial number that names it, and a fingerprint that proves its photographic record is exactly as it was captured.
The serial number is how you and everyone else refer to a specific record — it's printed on page one of every report and shown next to the scan in the app. The fingerprint is the part that makes the record tamper-evident: it is computed from the photos themselves, so if a single photo is edited, cropped, swapped, or removed, the fingerprint no longer matches.
You don't have to understand the math. You just have to be able to compare two short strings and see that they're identical — which is the whole point of the walkthrough below.
- VW
- Marks it as a VeriWalk record.
- 20260705
- The capture date, year-month-day.
- 8F3A0C
- A unique tag for that scan.
SHA-2569f2c4a7b 1e05d833 6c9a0f21 47be5d10 a3f8c2e9 0d5b7146 8e21ca3f 74d09b52
64 characters. Change any photo and every character can change.
DATUM 02 What a fingerprint is
One changed pixel, a completely different fingerprint.
A SHA-256 fingerprint is a short string calculated from the exact contents of your record's photos. The same photos always produce the same string. But if even one photo is altered by a single pixel, the string that comes out is entirely different — there's no way to make a small edit that produces a small change. That's what makes it evidence of tampering: the fingerprint on the report either matches the record in the app, or it doesn't.
DATUM 03 How to check a record
Compare two strings. That's the whole check.
Read page one
Open the PDF report you received. On page one, find the serial number and, printed beneath it, the SHA-256 fingerprint for that record.
Open the same record
In the VeriWalk app, open the record with the matching serial number. Its details screen shows the fingerprint the app holds for that scan.
Confirm they match
Compare the two fingerprints character for character. If they're identical, the photos in the report are exactly the ones captured on site. If they differ, the report was changed after capture.
The record holder controls their own records in the VeriWalk app. If you've been sent a report and want to confirm the fingerprint against the app, ask the crew who captured it to open the record with you — the two strings should match in front of both of you.
VeriWalk does not offer online lookup of records today, and this page does not check records for you. Fingerprints are compared by reading the report and the app directly, as described above.