Provably fair Keno verifier

Recompute any Keno round from the revealed server seed, your client seed and the nonce. House edge: ~1–2%.

Forty floats shuffle the 1–40 board and the first 10 numbers are drawn. Your picks are matched against that fixed draw — the payout table depends only on how many of your numbers appear.

The draw is identical for every bet in the same nonce, so verifying replays exactly the numbers you saw.

Odds and payouts

Hit frequency scales with how many numbers you pick; the verifier shows the full 10-number draw.

How to verify a keno round yourself

  1. Rotate or end the seed pair in your account so the casino reveals the server seed it committed to. Until that happens the hash is a promise, not a proof.
  2. Copy the revealed server seed, your client seed and the nonce of the round you want to check — the nonce is the round counter, not a timestamp.
  3. Paste all three into the verifier above. It recomputes the HMAC chain and derives the keno outcome the same way the operator's server did.
  4. Compare the result with what your bet history shows. A mismatch on any single round is the only evidence of tampering that actually means something.
  5. Check the committed hash too: hash the revealed server seed and confirm it equals the hash the casino published before you played.

Verification proves the result was not changed after you bet. It does not make keno profitable — the ~1–2% house edge is applied openly, in the payout table, and it is unaffected by any of this.

Other verifiers