Digital Watermark
A Digital Watermark is a covert identifier embedded into digital media (audio, video, or images) to protect copyrights, verify authenticity, or convey ownership information without altering the original content perceptibly. Watermarks can be visible, like a logo or text overlay, or invisible, encoded into the content’s data. They serve as a deterrent against unauthorized use or distribution, providing a means to track and identify instances of copyright infringement.