Verify a bet

Recompute a result from the seeds the casino gave you. If the number here matches the number they showed you — and the revealed server seed hashes to what was published before play — the outcome was fixed before you bet and could not have been changed afterwards.

Where to find these values

In the casino, open the bet → Fairness / Verify.
Rotate your seed pair so the current server seed is revealed. Bets made under a still-hidden seed can't be verified yet — that's by design.
Copy the revealed server seed, your client seed and the bet's nonce. Paste the pre-play server seed hash too if you saved it — that's what proves the seed wasn't changed.

Supported today: the HMAC-SHA256 scheme used by Stake and Shuffle. Other operators use their own constructions; we add them as we document them.

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Verify by casino

One page per operator: where its seeds are, which games recompute here and a worked example. Where the verifier cannot recompute an operator's bets the page says so and offers the SHA-256 commitment check instead.

By game: Stake Dice / Shuffle Dice · Stake Limbo / Shuffle Limbo · Stake Plinko / Shuffle Plinko · Stake Mines / Shuffle Mines · Stake Crash / Shuffle Crash · Stake Keno / Shuffle Keno · Stake Roulette / Shuffle Roulette

Prefer a casino that shows its working?

Craze publishes RTP on every game and runs its own provably-fair Originals; they will verify here once their construction is documented.

See Craze

Craze publishes RTP on every game and runs its own provably fair Originals.

VerifyRoll is sponsored by Craze, a crypto casino that shows its working: RTP on every game, crypto in and out, and terms you can read.

Crypto-only: 20+ coins; deposit fees absorbed in most cases

Provably fair originals, 2,000+ slots, 40+ live dealers

Start with a verified email; $10 minimum withdrawal

Craze Rewards: 25% of the house edge back from your first bet

From Craze's published terms, checked 2026-09-27. Full terms at Craze.