Scenario 1 · Consular legalisation
A genuine certificate with a forged stamp
The police record is real. The consular stamp that legalises it is not, and the same stamp image turns up in other applications. Run the agents and see where an officer should look.
APP-2026-0412 · police_clearance_certificate.jpg
What you are looking at
A genuine-looking police clearance certificate, legalised by a consular stamp. The certificate itself is genuine; the stamp was added later. It mirrors a pattern reported in European residence processing: forged consular stamps on genuine police certificates, which only become visible when many files are compared.
Agent log
Intake Load APP-2026-0412 and the 11 other applications from the same consular batch
Verify Locate the legalisation stamp on every certificate by its ink colour
Verify Compare each stamp with the reference impression from the consulate's library
Link Hash every stamp image and look for the same image reused across applications
Sentinel Assemble the evidence report and route the files
How it works
Three checks a person cannot do across hundreds of files
Locate
The stamp is found by its ink colour, cropped and scaled to the size of the reference impression held for that consulate.
Align and compare
The stamp is rotated to match the reference using its centre emblem, then the border, dotted ring, ring text and ink texture are measured in polar coordinates.
Link
Every stamp in the batch gets a perceptual hash. Real rubber-stamp impressions always differ a little; a copied image does not.
Everything on this page is computed live in your browser on synthetic specimens. In production, reference impressions come from the authority's own library, and findings feed the case file described on the platform page.
Run this on your own legalisation stamps
A pilot starts with your reference stamps and a sample of past files. We show you what the agents find before anything goes live.