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How it worksWhat it paysRTPTest vectorsVerify

Provably Fair

  • How it works
  • What it pays
  • RTP
  • Test vectors
  • Verify
Provably FairRhum 32

Rhum 32

Fifty-two numbers from your seeds shuffle one full deck, fixed when you bet. Ten cards are dealt from the top: five to you and five to the dealer, one of the dealer's face up.

RTP
97.98%
Max win
2,001×
Verify a Rhum 32 roundPlay Rhum 32
How it works

How a Rhum 32 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 shuffle a full deck when you bet. That order determines your hand and the dealer's hand.

  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
rhum-32.tsTypeScript
1export function shuffleDeck(floats: number[]): CardDto[] {
2  if (floats.length < 51) {
3    throw new Error('shuffleDeck requires at least 51 floats');
4  }
5  const deck = orderedDeck();
6  for (let i = 0; i < 51; i += 1) {
What it pays

Every outcome and what it pays.

Bet
Play bet, when your hand beats a dealer who qualifies (house edge 5.09% of the ante with near-best play)
Your winning handPlay bet pays
Ace to Five in one suit200 to 1
0 points100 to 1
1 to 3 points30 to 1
4 to 7 points5 to 1
8 to 11 points4 to 1
12 to 17 points3 to 1
18 to 32 points1 to 1
RTP

Return to player.

Theoretical RTP: 97.98%.

  1. The main game depends on your fold and raise choices. With the best choice on every hand it holds 5.09% of the Ante.

  2. Insurance is counted exactly over all 2,598,960 five-card hands.

    RTP = 2,479,808 / 2,598,960 = 95.42%
  3. The Tie bet pays 25 to 1 on the 3.68% of deals where the points are level, a return of 95.59%.

Test vectors

Fixed inputs, known results.

Reproduce these results with the inputs below.

Verify

Check a Rhum 32 round.

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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