Video and Document Watermarking and Copyright Protection Using Blockchain
Abstract
Digitization of content has become a need in today’s digital world, and protecting content is much more challenging. Previously visible watermarks like logos, signs or special characters were used to mark or claim ownership. But various techniques like clipping, rotating and compression can be used to remove such a watermark. To ensure proper security, the watermark was supposed to be big and loud, which actually degrades the quality of the entity. Considering these challenges, invisible watermarking techniques such as LSB were implemented; however, they remained vulnerable to certain attacks. Watermarking modifies the frequency components of a video in a way that is imperceptible to the human eye but can be detected digitally. A certain design will be used to change the frequency and this pattern. This stamp will have all the information about the owner, like their name, contact information, the time the watermark was made, and so on. The SBP-DCT algorithm is used to embed watermarks in video frames, and PDF metadata steganography is implemented for document protection. If someone steals and posts a video without the owner's permission and the video has a label, the owner can check the information and send a copy of the rights to the person who posted it. The watermark is hidden and stored by Vidguard on the Blockchain network. Because of this, changing the information is also very hard on the blockchain.
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