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How it worksWhat it paysRTPTest vectorsVerify

Provably Fair

  • How it works
  • What it pays
  • RTP
  • Test vectors
  • Verify
Provably FairDice

Dice

One number from your seeds becomes a roll between 0.00 and 100.00. Choose Over, Under, In Between or Outside. Exact boundaries lose.

RTP
98.99%
Max win
9,900×
Verify a Dice rollPlay Dice
How it works

How a Dice result is made.

  1. 1

    Commit

    We choose our server seed before you bet and show its fingerprint. This commits us to that seed.

  2. 2

    The draw

    Your seeds generate one roll from 0.00 to 100.00. Your target and direction decide whether it wins.

  3. 3

    Reveal

    Rotate your seed to reveal ours. Use both seeds and the bet number to recheck any past result.

The whole formula

result = HMAC-SHA256(serverSeed, clientSeed:nonce:round)

  • serverSeedOur seed, sealed until you rotate
  • clientSeedYour seed
  • nonceBet number, +1 each bet
  • roundExtra numbers, for games that need more
dice.tsTypeScript
1export function computeDiceRollFromFloat(float: number): number {
2  return Math.floor(float * DICE_OUTCOME_COUNT);
3}
4 
5export function computeDiceRollDisplay(rollUnits: number): number {
6  return rollUnits / 100;
What it pays

Every outcome and what it pays.

Sample targets
BetChancePays
Roll under 2.002.00%49.5×
Roll under 10.0010.00%9.9×
Roll under 25.0025.00%3.96×
Roll under 49.5049.50%2×
Roll over 50.5049.50%2×
Roll over 75.0025.00%3.96×
Roll over 90.0010.00%9.9×
Roll over 98.002.00%49.5×
RTP

Return to player.

Theoretical RTP: 98.99%.

  1. There are 10,001 possible rolls, each equally likely.

    P(win) = W / 10001
  2. A win pays 99 divided by the win chance the slider shows, which counts 10,000 rolls.

    multiplier = 9900 / W
  3. Return is chance times payout.

    (W / 10001) × (9900 / W) = 9900 / 10001 = 98.99%
Test vectors

Fixed inputs, known results.

Reproduce these results with the inputs below.

Verify

Check a Dice roll.

Find it in your bet history or on any bet slip

What we check

  1. 01Our seed matches its fingerprint
  2. 02Your seed is mixed in
  3. 03Numbers are drawn
  4. 04Numbers become the result
  5. 05The result matches your bet

Everything is calculated in your browser.

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