In computing, ROM Mark or BD-ROM Mark is a serialization technology designed to guard against mass production piracy or the mass duplication and sale of unauthorized copies of pre-recorded Blu-ray Discs. Only licensed BD-ROM manufacturers have access to the equipment that can make these unique ROM Marks, thus allowing authentic BD-ROM media like movies and music to be identified.^[1]

The ROM Mark contains the Volume ID required to decrypt content encrypted using AACS.^[2]

• Burst Cutting Area

• Panasonic, Philips, Sony. 3C BD-ROM Mark Specification.
• Edmonds, Robert A.; (Saratoga, CA); McDonnell, Kevin J.; (Pleasanton, CA); Meulder, Johan De; (Kessel, BE). "Method and apparatus for identifying a digital recording source".
• MPAA. "Digital Content Protection Status Report". IRMA Annual Recording Media Forum. (PowerPoint file, via The Internet Archive)
• CDRInfo. "Blu-ray Disc Marking System Explained".
• CDRInfo. "DaTARIUS DaTABANK Reads BD-ROM Mark".