You want a piece of the $52 million antitrust settlement? No receipts or any documentation required. You just have to certify that you bought dairy products (milk, yogurt...etc.) in any of the listed states within the last 13 years.
Apparently, the Dairy Industry schemed and slaughtered 50K cows to generate illicit profits. Here's an article about the legal background of the case. No word on compensation for the relatives of the deceased cattle.