No province offers a public search by chassis number alone. Punjab’s MTMIS uses the chassis number in two places — Number Plate Info (registration number + chassis number) and Application Tracking (application number + chassis number). Otherwise, the check is a match: look the bike up by its registration number, then compare the chassis number stamped on the frame with the one in the registration book or smart card. A filed, re-stamped or welded number is a reason to walk away.