Provably fairHow the dice work
OmertaEra has no hidden random number generator. Every action that involves luck draws its numbers from three ingredients:
- Server seed — 32 random bytes the house generates for you and keeps secret. You are shown its SHA-256 hash before you play, so the house cannot swap it later.
- Client seed — a string you can set yourself on the in-game Provably Fair page. The house never knows it in advance of you choosing it.
- Nonce — a counter that goes up by one with every action you take under the pair.
For an action the game computes HMAC-SHA256(key = serverSeed, message = clientSeed + ":" + nonce + ":" + block) with block starting at 0. The 32-byte result is cut into eight 4-byte big-endian integers, each divided by 232 to give a float in [0, 1). When eight are used up, block goes up by one. A simple action succeeds when its first float is below the chance shown on screen. Casino games draw as many floats as they need (a shuffle uses 51, roulette one, keno twenty).
When you rotate your seed pair, the retired server seed is revealed. Paste it below with your client seed and the nonce of any outcome and you get the exact numbers the game used. The in-game page does this for you with one click and replays the full game logic.
Calculator
House audit
Generated Mon, 02 Nov 2026 17:07:45 GMT. Recomputed every 30 minutes from the full log.
No statistical alerts. Every logged outcome agrees with its own roll and chance (0 contradictions).
Casino return — since launch
The ± figure under a return is how far that return can drift on luck alone: nineteen times in twenty the table’s true return sits inside it. A wide band means the table has not taken enough money yet to tell you anything — one big win on a big stake can carry a whole column — and a table only counts as off when it lands outside its expected range by more than 3.5 times that drift.
| Game | Bets | Staked | Paid out | Observed return | Expected | What that means |
|---|---|---|---|---|---|---|
| Baccarat Eight decks, exact: Banker 98.94%, Player 98.76%, Tie 85.64%. A Tie pays 8 to 1, so the range and the spread are both the Tie’s. | 3 | $1,610 | $1,595 | 99.1% ± 303.7 pp | 85.6–98.9% | Too early to say — about 204 more bets like these |
| Blackjack One shared table: six decks, S17, 3:2, DAS, one split — simulated with basic strategy; real players return less, so only a return above it is a fault. | 597,915 | $217,715,479 | $217,243,719 | 99.8% ± 0.5 pp | 0.0–99.4% | Within the expected range |
| Craps Exact: pass 98.59%, don’t pass 98.64%, place 6/8 98.48%, field 94.44%. The mix of bets moves the observed return, so the whole range counts as expected. | 598,781 | $279,586,970 | $274,686,279 | 98.3% ± 0.5 pp | 94.4–98.6% | Within the expected range |
| Casino Hold'em Retired — the table is closed, so there is no live paytable to judge these rows against. The history stays. | 14 | $9,600 | $13,100 | — | Retired | Closed table — not judged |
| Jacks or Better Full-pay 9/6 paytable: 99.5% with optimal holds; casual play returns less, so only a return above it is a fault. | 88 | $10,190 | $9,210 | 90.4% ± 194.5 pp | 0.0–99.5% | Too early to say — about 850 more bets like these |
| Race Track Every horse returns the same share: 1 / Σ(1/odds). The 50-to-1 outsider swings hardest. | 8 | $800 | $900 | 112.5% ± 464.0 pp | 91.3% | Too early to say — about 192 more bets like these |
| Roulette Every bet pays 36/37 of a fair price (single zero). A straight-up number swings hardest, so that is the spread the audit allows. | 394,942 | $178,577,313 | $173,682,290 | 97.3% ± 3.1 pp | 97.3% | Within the expected range |
| Slots Weighted reel strip, exact over every reel combination. Three sevens pay 500×, so one pull can carry a whole week. | 69,850 | $27,561,859 | $25,419,884 | 92.2% ± 8.4 pp | 95.3% | Within the expected range |
Casino return — last 7 days
| Game | Bets | Staked | Paid out | Observed return | Expected | What that means |
|---|---|---|---|---|---|---|
| Blackjack One shared table: six decks, S17, 3:2, DAS, one split — simulated with basic strategy; real players return less, so only a return above it is a fault. | 93,574 | $46,115,325 | $45,711,766 | 99.1% ± 1.3 pp | 0.0–99.4% | Within the expected range |
| Craps Exact: pass 98.59%, don’t pass 98.64%, place 6/8 98.48%, field 94.44%. The mix of bets moves the observed return, so the whole range counts as expected. | 102,895 | $63,943,014 | $62,757,193 | 98.2% ± 1.2 pp | 94.4–98.6% | Within the expected range |
| Roulette Every bet pays 36/37 of a fair price (single zero). A straight-up number swings hardest, so that is the spread the audit allows. | 203,980 | $99,410,020 | $96,621,549 | 97.2% ± 4.3 pp | 97.3% | Within the expected range |
| Slots Weighted reel strip, exact over every reel combination. Three sevens pay 500×, so one pull can carry a whole week. | 327 | $95,200 | $46,800 | 49.2% ± 74.4 pp | 95.3% | Within the expected range |
Crimes, thefts, busts, escapes, checkpoints — since launch
Every action logs the chance it showed you and the roll it made. Hits should track the expected count; z is how many standard deviations they are apart, and a band is only read once at least ten hits and ten misses are expected in it.
| Action | Shown chance | Rolls | Hits | Expected | z | What that means |
|---|---|---|---|---|---|---|
| booze run | 0–10% | 55 | 6 | 2.7 | 2.08 | Too early to say — too few rolls in this band |
| booze run | 10–20% | 46 | 7 | 7.0 | 0.02 | Too early to say — too few rolls in this band |
| booze run | 20–30% | 52 | 11 | 13.4 | -0.76 | Within the expected range |
| booze run | 30–40% | 23 | 10 | 7.2 | 1.28 | Too early to say — too few rolls in this band |
| booze run | 40–50% | 24 | 12 | 10.3 | 0.72 | Within the expected range |
| booze run | 50–60% | 18 | 8 | 9.1 | -0.54 | Too early to say — too few rolls in this band |
| bust | 20–30% | 45 | 15 | 12.0 | 1.01 | Within the expected range |
| bust | 30–40% | 14 | 2 | 4.3 | -1.34 | Too early to say — too few rolls in this band |
| crime | 20–30% | 11 | 3 | 3.0 | -0.02 | Too early to say — too few rolls in this band |
| crime | 30–40% | 32 | 14 | 11.5 | 0.91 | Within the expected range |
| crime | 40–50% | 26 | 14 | 12.0 | 0.79 | Within the expected range |
| crime | 50–60% | 107 | 68 | 60.5 | 1.46 | Within the expected range |
| crime | 60–70% | 93 | 59 | 59.7 | -0.15 | Within the expected range |
| crime | 70–80% | 50 | 37 | 37.0 | -0.02 | Within the expected range |
| crime | 80–90% | 2 | 2 | 1.6 | 0.69 | Too early to say — too few rolls in this band |
| escape | 10–20% | 16 | 3 | 2.4 | 0.40 | Too early to say — too few rolls in this band |
| escape | 20–30% | 24 | 7 | 6.5 | 0.26 | Too early to say — too few rolls in this band |
| escape | 30–40% | 2 | 1 | 0.7 | 0.53 | Too early to say — too few rolls in this band |
| gta | 0–10% | 6 | 0 | 0.1 | -0.25 | Too early to say — too few rolls in this band |
| gta | 10–20% | 3 | 0 | 0.5 | -0.78 | Too early to say — too few rolls in this band |
| gta | 20–30% | 5 | 2 | 1.2 | 0.88 | Too early to say — too few rolls in this band |
| gta | 30–40% | 45 | 15 | 16.4 | -0.44 | Within the expected range |
| gta | 40–50% | 41 | 21 | 18.6 | 0.74 | Within the expected range |
| gta | 50–60% | 27 | 20 | 14.7 | 2.04 | Within the expected range |
| gta | 60–70% | 7 | 5 | 4.5 | 0.43 | Too early to say — too few rolls in this band |
| gta | 70–80% | 1 | 1 | 0.7 | 0.60 | Too early to say — too few rolls in this band |
| gta | 80–90% | 1 | 1 | 0.9 | 0.39 | Too early to say — too few rolls in this band |
| major | 40–50% | 159 | 65 | 72.8 | -1.25 | Within the expected range |
| major | 50–60% | 74 | 48 | 39.5 | 1.99 | Within the expected range |
| major | 60–70% | 13 | 5 | 8.4 | -1.96 | Too early to say — too few rolls in this band |
| major | 70–80% | 4 | 3 | 2.9 | 0.10 | Too early to say — too few rolls in this band |
| mastermind | 50–60% | 1 | 0 | 0.6 | -1.11 | Too early to say — too few rolls in this band |
| mastermind | 60–70% | 1 | 1 | 0.6 | 0.77 | Too early to say — too few rolls in this band |
Whacks — since launch
| Action | Shown chance | Rolls | Hits | Expected | z | What that means |
|---|---|---|---|---|---|---|
| whack | 30–40% | 1 | 1 | 0.3 | 1.53 | Too early to say — too few rolls in this band |
| whack | 60–70% | 1 | 0 | 0.6 | -1.22 | Too early to say — too few rolls in this band |
| whack | 70–80% | 9 | 8 | 6.8 | 0.96 | Too early to say — too few rolls in this band |
| whack | 90–100% | 4 | 4 | 3.8 | 0.46 | Too early to say — too few rolls in this band |