I submitted my claim yesterday. I ordered the rear online, submitted the claim on the Pirelli site, then replied to the Pirelli registration email with a PDF of the Approved email receipt from the online retailer. I just checked on the site this morning and the claim is approved.
Claim Number: 55
Claim Status: P-O-P Validated
Your claim has been validated by HQ on 6/18/2013 and you are entered in the contest
I was just looking to get some tires, I've got 5700 miles on the stockers but they've still got some life left. Almost exclusive highway commuting.
There were 83 left when I checked, so you better get going if you want one.