You  have discovered that your copyright digital media has been infringed  upon.  You will manufacture a infringement  in which a website of your  choice has violated.  Write a takedown notice to the violator. 

Your notification must:

• Be in writing (this includes both hardcopy or digital);

• Be signed (whether in writing or via electronic signature) by the copyright owner or agent;

• Identify the original copyrighted work (or works if there are multiple) you claim has been infringed;

• Identify the material that is infringing your copyrighted work;

• Include contact information so the designated agent can reach you.

• Include a statement your complaint is in “good faith;”

• Include a statement the information in the notification is accurate; and

•  Include a statement that under penalty of perjury you are authorized to  act on behalf of the owner of an exclusive right that is allegedly  infringed.

Refer to https://sarafhawkins.com/how-to-file-dmca-takedown/  for an example.