61 Pa. Code § 811.15
Until such time as a name is imprinted or placed upon the rear portion of the lottery ticket in the area designated for name, a lottery ticket shall be owned by the physical possessor of the ticket. When a name is placed on the rear of the ticket in the designated place, the person whose name appears in that area shall be the owner of the ticket and shall be entitled to a prize attributable thereto. Notwithstanding a name submitted on a claim form, the Bureau shall make payment to the name appearing on the back of the ticket in the space designated therefor. However, if more than one name appears on the rear of the lottery ticket, one of those persons whose name appears thereon may be designated to receive payment. This may be done by indicating the name to which payment is to be made by an indication on the claim form and by the signature on the claim form of other persons whose names appear on the rear of the ticket. The person appearing for payment shall be the same as that which appears on the rear portion of the lottery ticket in the space designated.
61 Pa. Code § 811.15
This section cited in 61 Pa. Code § 819.231 (relating to procedure for claiming and payment of prizes).