Stake Roulette Verifier

Recompute the pocket for one spin on Stake from the server seed, client seed and nonce. Same HMAC-SHA256 stream the operator publishes, run in your browser.

Verify one betAnalyze a range

Casino

Game

Have a bet link? paste it; we open the right casino and game and tell you where the seeds are. Nothing is sent anywhere.

Examples

Verification Inputs

Server Seed unhashed, revealed after you rotate

Client Seed your chosen seed

Nonce bet counter, starts at 0

Server Seed Hash optional, the SHA-256 shown before you bet

Recomputes as you type. Nothing leaves your browser.

Roulette Result

Paste the server seed and client seed from the bet. The roulette result appears here as you type.

Algorithm sourceStake, Provably Fair: Game Eventschecked 2026-09-20

Read from the Wayback snapshot of 2025-07-19 (the live page challenges non-browser fetches); saved at research/casinos/stake/evidence/provably-fair-game-events-wayback-20250719.txt. Crash is verified on its per-seed curve only: live multiplayer Crash rounds come from a public hash chain, not your seed pair.

Stake fairness page Stake on GAMB·8

How Stake derives a Roulette result

From float to result

European single-zero wheel with 37 pockets. The pocket is floor(float × 37), giving 0 to 36 with equal probability.

What to compare

Compare the pocket number with the spin in your bet history. Colour follows the standard European layout.

Where the seeds are

Open the bet in your history on Stake. The client seed and nonce show immediately. The unhashed server seed appears only after you rotate your seed pair, so rotate first, then verify every bet from the old pair.

The byte stream, Stake

bytes = HMAC_SHA256(key = serverSeed, msg = clientSeed:nonce:round) // round starts at 0float = b0/256 + b1/256^2 + b2/256^3 + b3/256^4 // 4 bytes per floatresult = game event mapping applied to the floats, in order

Other Stake games

Stake Dice verifier Stake Limbo verifier Stake Crash verifier Stake Mines verifier Stake Flip verifier Stake Plinko verifier Stake Hilo verifier Stake Keno verifier Stake Dragon Tower verifier Stake Wheel verifier Stake Diamonds verifier Stake.us verifier Shuffle Roulette verifier Winna Roulette verifier

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Frequently Asked Questions

Is the colour part of the provably fair result?

No. The published event is the pocket number. The colour is the standard wheel layout applied to that number.

Does my bet type change the pocket?

No. Straight, split, red or black only decide whether that pocket paid.

Which Stake algorithm does this use?

Stake, Provably Fair: Game Events, read 2026-09-20. The byte stream is HMAC-SHA256 of clientSeed:nonce:round keyed by the server seed, converted to 4-byte floats, then mapped to the pocket.

Do my seeds leave the browser?

No. The HMAC and SHA-256 run with the Web Crypto API on your device. The share link carries the seeds only because you copied it.