Stake Mines Verifier

Recompute every mine position for one bet 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

Number of Mines 1 to 24

Recomputes as you type. Nothing leaves your browser.

Mines Result

Paste the server seed and client seed from the bet. The mines 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 Mines result

From float to result

Each float is multiplied by the number of tiles still unassigned, and that tile is removed from the pool (Fisher-Yates). The first N draws are the mines, where N is the mine count you chose. Tiles are numbered left to right, top to bottom.

What to compare

The board below should match the revealed board in your bet history exactly, including tiles you never clicked.

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

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Frequently Asked Questions

Does the mine layout change while I play?

No. All mine positions are fixed by the seeds and nonce when the bet is placed. Revealing tiles reads them; it does not roll them.

Why does changing the mine count change the layout?

The first draws are the same for any count (the set for 3 mines is a prefix of the set for 5), so a 5-mine board contains the 3-mine board plus two more.

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 every mine on the 5x5 board.

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.