DICE PROVABLY FAIR VERIFIER

If you only ever audit one casino game, make it Dice. There is no board, no path, no animation — just a slider, a target, and a two-decimal number between 0.00 and 100.00. That minimalism means the whole fairness argument fits in two lines of arithmetic, and a mismatch has nowhere to hide.

Not sure which to choose? See what we recommend for each type of player.

HOW DICE RESULTS ARE CALCULATED

First the tool checks that SHA-256(revealed server seed) equals the hashed seed you were shown before betting. Then Dice consumes a single random float and scales it to the 0.00–100.00 range (Stake and Shuffle, per their published game-events pages):

1. Compute HMAC-SHA256(serverSeed, "clientSeed:nonce:0") and take the first 4 bytes as a float in [0,1).
2. Apply roll = floor(float × 10001) / 100 → a value from 0.00 to 100.00.

BC.Game Classic Dice uses HMAC-SHA256(serverSeed, "clientSeed:nonce") with no cursor, then floor(float × 100.01 × 100) / 100 on the float rounded to 9 places (its open-source verifier, github.com/bcgame-project/verify). Roobet and other casinos are not reproduced: we could not read a byte-level spec, so the tool checks only the seed commitment for them.

Reference check from Shuffle’s own help article (help.shuffle.com 9286069, read 22 Oct 2026): server seed def, client seed abc, nonce 1 gives the float 0.43053963 and a roll of 43.05. Pick Shuffle or Stake above, enter those values, and the tool lands on the same roll.

TARGETS, WIN CHANCE AND PAYOUT

The roll itself is only half of Dice; the other half is the target you set before it. Betting under 25.00 wins on roughly 25% of rolls; over 75.00 likewise. The payout adjusts continuously as multiplier = 99 / win chance (%), so under-25 pays about 3.96x and a coin-flip-ish under-49.50 pays 2.00x. That 99 in the numerator (rather than 100) is the entire house edge — 1%, applied identically at every target. Verification only concerns the roll: the target, chance and payout are all visible on your bet slip, so once the roll reproduces, the settlement is a matter of reading the slider.

WHY VERIFY DICE?

Dice invites streak-hunting: after six losses in a row at 50% it is natural to suspect the roll generator is leaning on you. Auditing a losing run is the antidote — recompute each roll from the seed pair the casino committed to before the session and confirm every number was already locked in. What the check proves is narrow but decisive: the sequence you experienced was fixed before your first click, so no per-bet manipulation occurred. What it cannot do is make 99/chance into 100/chance — the edge calculator shows what that 1% costs over volume, and the provably-fair guide explains why the commitment itself is trustworthy.