A Certificate of Title or other ownership documents must accompany this form. INSTRUCTIONS. • All areas must be completed in full.Use online Nevada bills of sale to document the transfer of ownership of a car, boat, firearm, or other personal property from a seller to a buyer. Secure your transaction with our notarized bill of sale template. Many forms require signatures from a Notary Public or a DMV representative to be valid. It can serve as proof of the change of ownership. A notary public is required to authenticate the buyer and seller's signatures. Be sure to complete the Buyer section of the title with the full legal name(s) of the new owner(s). Both the buyer and seller should sign in the presence of a witness or a notary public for added legal validity. Step 10: Witness or Notary Signature.