The Oregon Lottery attempts to ensure that the winning numbers for each drawing is posted correctly on this web site. However, posted numbers are unofficial. The only official source for verifying winning numbers on a player's ticket is through the Oregon Lottery's central computer system. To confirm that an Oregon Lottery ticket is a winner, please have the ticket validated through a Lottery sales terminal at any retailer or at a Lottery office (OAR 177-070-0035). Players have one year from the date of the drawing for which the ticket was purchased to claim any prizes from that drawing (OAR 177-070-0025).