Shuffle Keno Verifier

Recompute the 10 numbers drawn for one bet on Shuffle 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.

Keno Result

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

Algorithm sourceShuffle Help Center, Provably Fair: Implementation + Game Eventschecked 2026-09-20

Shuffle documents the same byteGenerator (HMAC-SHA256 over clientSeed, nonce and cursor; 32 bytes as 8 four-byte floats) and the same event mapping for the games listed here (article revision 2026-08-12). Its code blocks are images, so the prose is what was checked. Not listed: Crash and Slide (hash-chain seeded), Limbo and Tower (formula and difficulty table not in the prose), Coinflip and Hilo (side and card index order not in the prose).

Shuffle fairness page Shuffle on GAMB·8

How Shuffle derives a Keno result

From float to result

Ten floats are generated. Each is multiplied by the count of numbers still in the pool of 1 to 40, and the chosen number is removed before the next draw (Fisher-Yates). The house always draws 10, whatever you picked.

What to compare

Mark your picks on the board below; hits are the picks that appear in the 10 drawn numbers.

Where the seeds are

Open the bet in your history on Shuffle. 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, Shuffle

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 Shuffle games

Shuffle Dice verifier Shuffle Mines verifier Shuffle Plinko verifier Shuffle Roulette verifier Shuffle Wheel verifier Stake Keno verifier Stake.us Keno verifier Winna Keno verifier

Keep what you worked out.

A free account saves your bankroll plans, sessions and the results you run here, on every device. No card, no upsell.

Create free account All tools

Frequently Asked Questions

Does my pick count change the draw?

No. The house draws 10 numbers for every bet. Your picks only determine how many of those 10 were hits.

Why are the drawn numbers sorted?

For display. The draw order is fixed by the floats, but Keno pays on the set of hits, so order does not matter to the result.

Which Shuffle algorithm does this use?

Shuffle Help Center, Provably Fair: Implementation + 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 10 numbers drawn.

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.