Do you not have a purchase receipt/proof of purchase?
Won Bastard: if you received the Bastard as an incentive from e.g. your employer or won it in a competition or the like, then you can enclose a document (letter or e-mail) as proof of warranty which shows that you received or won the Bastard.
Items that are required to be listed on this are: name of giver, name of receiver (owner), which model type (size + year), owner address, owner phone number and the date of purchase. This then serves as proof of purchase. You can register it online for warranty.
Received Bastard as a gift: to claim warranty, a copy of the proof of purchase is required (note: no debit card transaction). We can imagine you don't have one if you received your Bastard as a gift. Then request it from the giver anyway, so you can register you Bastard and make use of the warranty (if necessary).