Provably Fair

SHA-256(server seed) must match the committed hash. HMAC-SHA256 uses the revealed server seed, your client seed, and the round nonce to reproduce the random values and the game result. The verifier checks the commitment, outcome, and payout.

Odds and payouts follow each game’s published rules. Verification does not guarantee profit. Earlier rounds without a proof cannot be verified with this system.

New version 7 hands target 88% RTP with this reference strategy, before cent rounding. Player decisions, available funds for doubling and cent rounding affect actual return. The deck is a fair, freshly shuffled 52-card deck; the dealer checks for a natural and stands on all 17s. A natural and a dealer natural settle automatically.

• Hard 11 or less: Hit. With exactly two cards and funds to double, Double hard 10 or 11 against dealer 2–7.
• Hard 12: Stand against dealer 5–6; otherwise Hit.
• Hard 13–16: Stand against dealer 2–6; otherwise Hit.
• Hard 17 or more: Stand.
• Soft 17 or less: Hit. Soft 18: Hit against dealer 9–10; otherwise Stand. Soft 19 or more: Stand.

A soft hand has an ace counted as 11. Gross winning returns are 1.753333558952× the total stake, or 2.19166694869× for a natural; returns are rounded down to cents. Pushes return the full stake. The reference policy comes from an analytic infinite-deck model using these payouts, calibrated on the actual fresh single-deck rules with double stakes included. An independent 100-million-hand check estimated 87.99514% RTP (95% confidence interval: 87.97793%–88.01236%). This is a statistical target for the reference strategy.