Content ID
Content ID is YouTube's copyright system that automatically matches uploads against reference files from rights holders.
What it does
On a match, depending on the owner's choice, the video is blocked, monetised for the owner or tracked.
Who can use it
Rights holders with large catalogues who meet YouTube's criteria; others use the Copyright Match Tool and the copyright webform.
Frequently asked questions
Is a Content ID claim a strike?
No; strikes come from formal copyright takedown notices.