You can check the latest results here; all of the published results are official. Feel free to check the archive results, they may help you with picking the numbers to play the Polish Lotto for the next draws.
This page shows the winning combination of the last draw of the Polish Lotto, and the distribution of prizes corresponding to each of the prize categories of the last game.
On this same page you will be able to view data from previous draws. It can act as a guide for statistics or future combinations of bets.
It lets you see not only the winning combinations, but also prize distribution across different categories.