Winna Dice Verifier

Recompute the dice roll for one bet on Winna 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.

Dice Result

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

Algorithm sourceWinna Help Center, Provably Fair: Implementationchecked 2026-09-20

Published 2026-05-21, after our April 2026 audit placed Winna in the VERIFIER_ONLY tier; that audit is superseded for the algorithm question. Same byte stream as Stake (HMAC-SHA256 of clientSeed:nonce:cursor keyed by the server seed, eight uint32 / 2^32 floats per digest) and the same event mapping for the games listed, with two operator differences the verifier applies: Coinflip is float < 0.5 = heads (the opposite of Stake's Flip rule) and the Hilo card table is suit-major from Ace (♠A … ♦K). Dragon Tower is Winna's Pepe Tower, same LEVEL_MAP. Not listed: Slide (hash chain), Plinko Extreme (inverse-transform table), Coin Climber and Blackjack (not implemented here).

Winna fairness page Winna on GAMB·8

How Winna derives a Dice result

From float to result

The first four bytes of the HMAC become a float between 0 and 1. The roll is floor(float × 10001) / 100, which gives one of 10,001 outcomes from 0.00 to 100.00.

What to compare

Open the bet in your history and compare the roll shown there with the roll below. They must match to two decimals.

Where the seeds are

Open the bet in your history on Winna. 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, Winna

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 Winna games

Winna Limbo verifier Winna Mines verifier Winna Coinflip verifier Winna Plinko verifier Winna Hilo verifier Winna Keno verifier Winna Pepe Tower verifier Winna Roulette verifier Stake Dice verifier Stake.us Dice verifier Shuffle Dice verifier

Keep what you worked out.

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Frequently Asked Questions

Why 10,001 outcomes and not 10,000?

The range 0.00 to 100.00 inclusive has 10,001 values. Multiplying the float by 10,001 before flooring is what makes 100.00 reachable.

Does my target or over/under choice change the roll?

No. The roll depends only on the server seed, client seed and nonce. Your target only decides whether that roll paid.

Which Winna algorithm does this use?

Winna Help Center, Provably Fair: Implementation, 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 roll (0.00 to 100.00).

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.