We are a “Provably Fair” website, you can find more informations about this matter here: Provably Fair Explained
You can verify your bets and seeds on the left Menu on Account → Provably Fair:
Then you have to click on the "CHANGE SEEDS" button, this will reveal your hidden seeds.
You will receive a confirmation message, and then you have to go back to the Provably Fair page, now the Last Seeds are revealed:
Now you just need to copy the information to this verifier independent from us: https://dicesites.com/bitsler/verifier
You will see that all the roll numbers match and your bets were played fairly!