Crypto casino operators face a problem that traditional fiat operators do not: their players read the source code. A bettor on a Stake- or Rollbit-style platform expects to verify the seed of every spin, watch the deposit confirm on-chain, and withdraw to a self-custodied wallet without a 48-hour compliance review. Build a crypto casino with the assumptions of a fiat platform and you will lose the audience in a week. Sudonex builds crypto-native casinos where on-chain transparency, provably fair mechanics, and security hardening are part of the platform spine, not features bolted on later.
What is included
The crypto casino stack ships with a provably fair RNG module (server seed, client seed, nonce, hash commitment, and a public verifier UI on every game), a multi-chain hot/cold wallet system covering BTC, ETH, USDT (ERC-20, TRC-20, BEP-20), SOL, and a configurable list of EVM chains, deposit detection with confirmation thresholds per chain, withdrawal queueing with risk scoring, and a games aggregator that exposes both classic provider titles and crypto-native originals (crash, plinko, dice, mines, limbo). On the compliance side we ship two pre-built profiles: KYC-light, where players transact under a deposit-and-withdrawal threshold without document submission, and KYC-mandatory, where the same flows we deploy for MGA-licensed brands apply.
Provably fair, in practice
Provably fair is not a marketing badge. The implementation that holds up to a sophisticated player is: the server commits a hashed seed before the round, the client supplies its own seed, the round outcome is a deterministic function of (server seed, client seed, nonce), the server reveals the unhashed seed after the round (or after a seed rotation), and the player can independently recompute the outcome. We publish the hashing function (HMAC-SHA256 by default) and a reference verifier in JavaScript. Every round is logged with its inputs so disputes resolve in seconds.
On-chain wallet architecture
Hot wallets hold operational liquidity per chain. Cold wallets, secured by multi-sig (Gnosis Safe on EVM chains, native multi-sig elsewhere), hold the rest. Sweeps run on thresholds, not schedules — a hot wallet over its ceiling drains automatically. Withdrawal requests pass through a risk engine that flags velocity anomalies, mixer-tainted addresses (using Chainalysis or TRM Labs feeds), and sanctions-list hits before broadcasting. Operators choose the auto-approve threshold; everything above goes to manual review.
KYC-light vs KYC-mandatory
KYC-light is appropriate for offshore-licensed brands serving jurisdictions where crypto-only play is legal and a self-declared age and geo gate is sufficient. KYC-mandatory is required for any regulated jurisdiction (MGA, Isle of Man, Curacao under the new framework, Anjouan with strict interpretation) and for any operator banking through a fiat off-ramp. The platform supports running both modes simultaneously per region, so a player from Brazil sees a different onboarding flow than a player from Germany.
Security
Crypto casinos are high-value targets. Every Sudonex crypto deployment includes a security audit and penetration testing pass before launch, with focus on wallet key management, deposit detection race conditions, and withdrawal authorization paths. We integrate with igaming API integration for chain explorers and price oracles, support casino payment integration for fiat on-ramps via Moonpay or Transak, and offer igaming maintenance and debugging retainers for ongoing chain upgrades and fork handling. Game catalogs are built through slot game development for proprietary crypto-native titles.
Use cases
This stack fits founders launching a Stake-style brand on a Curacao or Anjouan license, established offshore operators adding crypto rails to a fiat casino, and DeFi-adjacent teams who want a regulated front end on top of an on-chain backend.
FAQ
Which chains are supported out of the box
BTC, ETH, BSC, Polygon, Arbitrum, Optimism, Solana, Tron, plus USDT and USDC on every supported chain. Adding a new EVM chain takes a week of integration and certification.
Does provably fair work for third-party slots
No. Provably fair only applies to in-house games where we control the RNG. Third-party slots remain RNG-certified by GLI or iTech under the standard model.
How do we handle a chain reorg
Deposit confirmation thresholds are tuned per chain (e.g. 6 confirmations on BTC, 64 on Ethereum post-Merge). Reorgs below threshold reverse automatically; above threshold they are extreme-tail events handled by manual reconciliation.
Can players use Lightning
Yes, Lightning is supported as an optional deposit rail with sub-second confirmation, settled through a managed node or a partner like OpenNode.
What about mixers and Tornado Cash
Withdrawals to known mixer addresses are blocked by default. Deposits from sanctioned addresses are quarantined and reviewed; clean deposits release within minutes.
Launch the build
Talk to Sudonex about your target geos, license path, and chain priorities. We will return a build plan, security baseline, and timeline within a week.