Can ISAN be used to prevent or identify piracy?

ISAN as a unique identifier is not a method to protect digital assets, however it can be used in conjunction with content protection systems to improve their usage such as fingerprint or watermarking systems. ISAN is for example used in the AACS content protection system for Blu-ray disks or by content owner to identify their protected works with YouTube content ID or within the French Hadopi system.