A typical mistake when starting a crypto casino project is trying to slap Web3 on top of a regular gambling frontend. The result is a disconnect between UX and blockchain logic, losing player trust. We solve this with an architecture where provably fair is baked into every click. Building a crypto casino frontend requires integrating Web3, slot animations, and provably fair mechanisms. We create UI/UX from scratch, including state channels and multi-chain wallets. Our engineers have over 5 years of blockchain development experience and have delivered 50+ projects for crypto gambling. Contact us for a free consultation on your crypto casino frontend architecture.
How to implement provably fair on the frontend?
For full transparency, the frontend must display all cryptographic proofs. In a commit-reveal scheme, the server publishes the seed hash before the bet, the player adds their client seed, after the round the server reveals the seed. The result is deterministically computed from both seeds. The player can verify offline using any script.
const { ethers } = require("ethers"); const seed = await server.getRevealedSeed(gameId); const clientSeed = user.getClientSeed(gameId); const result = ethers.utils.solidityKeccak256(["bytes32", "bytes32"], [seed, clientSeed]); Why state channels are critical for UX
An on-chain transaction for every bet is a UX disaster on Ethereum due to gas and latency. State channels allow thousands of rounds without on-chain transactions, writing the final balance only at session end. For the user, it feels like instant bets. For the casino, it reduces gas costs. The dispute period (24-72 hours) protects against fraud. Transaction cost savings can reach 90%.
What animations are used in slots?
Slots require high-performance animations to attract players. We use Pixi.js on Canvas for rendering reels and paylines. States: idle, spinning, result, win — each with smooth transitions. The result comes from the server in under 100 ms, and animations adapt accordingly. For roulette and dice, we use SVG/WebGL with GSAP for smoothness. Live dealer requires a WebRTC stream with overlay UI.
Protection against front-running and bots
The commit-reveal scheme completely eliminates front-running: the result is determined by seeds revealed after the bet. Additionally, we use private mempools for bet transactions. Bots are blocked via rate limiting (100 requests/sec per IP), PoW challenge (sha256 of a case-sensitive nonce), and ML anomaly detection (deviation >2σ from normal behavior). For high-stakes games, a whitelist is available.
Architecture: on-chain vs hybrid
| Parameter | Fully on-chain | Hybrid (commit-reveal) |
|---|---|---|
| Transparency | Full (everything in blockchain) | Full (proof at end) |
| Speed | Depends on L2 (2-30 sec) | Instant (<100ms on server) |
| Gas cost | High (each bet) | Minimal (only deposit/withdrawal) |
| Development complexity | Medium | High (server + smart contracts required) |
| Suitable for | Simple games (roulette, dice) | Slots, live dealer |
Comparison of RNG methods
| Method | Transparency | Speed | Gas | Risks |
|---|---|---|---|---|
| On-chain VRF (Chainlink) | Full | 2-30 sec (L2) | High (each round) | Oracle dependency |
| Commit-reveal | Full (proof) | <100ms (server) | Minimal (deposit/withdrawal) | Requires trusted server |
| Hybrid (server + contracts) | Full (end check) | <100ms | Minimal | Server is potential attack vector |
Commit-reveal is 10-100x faster than on-chain, critical for live dealer and slots.
How does the development process work?
- Analytics and prototype — determine games, networks, mechanics. 2-5 days.
- Architecture design — choose stack, contracts, seed storage. Document.
- Frontend development — React/TypeScript, Pixi.js for animations, Wagmi for Web3. Iterative.
- Smart contract integration — deploy, test, audit.
- QA and load testing — Tenderly, Mythril, Slither. WebSocket security.
- Deploy and monitoring — Vercel/Cloudflare, Grafana, alerting.
What is included in the work
- Frontend source code (React + TS) with documentation
- Integration with WalletConnect, MetaMask, WalletConnectionKit
- Server-side for hybrid RNG (Nest.js/Fastify, Redis, PostgreSQL)
- Smart contracts (Solidity 0.8.x, Foundry/Hardhat)
- Load testing and security audit
- Production deployment and 2 months of support
Pricing is customized per project. Order development — get an MVP in 2 weeks. Contact us to estimate your project.