Step 1 — rotate your seeds
You can only verify a server seed after it’s been retired. In your game’s fairness settings, rotate (change) your seed pair. This reveals the previous server seed and starts a new committed one.
Step 2 — collect the four values
For the bet you want to check, you need: the revealed server seed, your client seed, the nonce (the bet’s number in the sequence), and the game type. These are all shown in the bet’s details and your fairness settings.
Step 3 — reproduce and compare
Enter those values into the Verifier. It runs the same HMAC-SHA256 derivation the casino uses and reproduces the outcome — the dice roll, the mine positions, the plinko path. Compare it to what you were actually dealt.
Match? The game was fair. Mismatch? You have cryptographic evidence for a dispute.
Verification is a habit, not a hassle. Bookmark the Verifier and check anything that looks off — it costs nothing and it’s the only way to settle a dispute with proof.
Open the Verifier →