How copy right content is checked ?

 Copyright content is typically checked using a process called "content matching" or "digital fingerprinting." This process involves creating a unique digital fingerprint or signature for a specific piece of content and then comparing it to other content that is being checked for potential copyright infringement.

The process typically works as follows:

1. Content is scanned and broken down into smaller parts, such as individual frames or sound bites, and a digital signature is created for each part.

2. The digital signatures are then stored in a database and used to compare against other content that is being checked.

3. When a new piece of content is uploaded, it is also scanned and its digital signatures are compared to those in the database.

4. If a match is found, the content is flagged as potentially infringing on the copyright of another piece of content.

5. The rights holder or copyright owner is then notified and can take legal action if necessary.

This process is typically automated and can be used by websites, content hosting platforms, and other online services to detect and prevent copyright infringement. In some cases, the process may also be used by content creators or rights holders to monitor their own content and ensure that it is not being used without permission.