| Image of the document | Areas retouched, rewritten or generated by AI, analysed by our image model | A field rewritten, a name pasted over, a title generated from a photo of a real one |
| Typography of the fields | Font, size, alignment and spacing of the characters, compared with the rest of the document | A name or a date retyped in another font, shifted by a few points |
| VIN | 17 characters, no I, O or Q, check digit in position 9 (49 CFR Part 565) | A check digit that fails, a forbidden character, a VIN too short |
| Make and model year | Make compared with the manufacturer code at the start of the VIN, model year with its 10th character | A make or a model year that the VIN contradicts |
| Title brand | Brand area read: salvage, rebuilt, flood, junk | A white patch or retyped text over a brand, a brand area that does not match the layout |
| Dates and odometer | Issue date, purchase date and odometer reading: order and plausibility | An issue date before the purchase, odometer digits retyped in another font |
| Owner and address | Compared with the driver's license and the proof of address in the file | A name or an address that does not match the other documents |
| Lienholder | Lienholder field compared with the loan or lease application | A lienholder erased or replaced on a financed vehicle |
| PDF metadata and versions | Producing software, dates, saved versions, deleted elements | A title reopened in a PDF editor, elements removed after issue |
| Photo data | Device, software and dates recorded in the photo (EXIF) | A photo that went through editing software before it was sent |