Why do you require a valid notice of infringement for each removal?

Consistent with the DMCA and similar applicable law, we require this information each time you identify infringing content on our service in order to specifically identify the content in question, satisfy ourselves of whether the content should be removed, and administer your notice. Please refer to our Copyright Policy for DMCA requirements.

For more information, please refer to  https://www.copyright.gov/title17/92chap5.html#512.