Roblox Item Betting Site Build

I need a custom web platform that lets Roblox players wager their own in-game collectibles against each other in a secure, provably-fair environment. The focus is entirely on Roblox betting—no sports or fiat gambling—so every feature must integrate cleanly with existing Roblox APIs, OAuth and the trade system.

Core flow: a user signs in with their Roblox account, deposits a chosen item into the site’s bot inventory, joins or creates a betting pool (coin-flip, crash, roulette or similar mini-game mechanics are fine), and, if they win, immediately withdraws either the pooled items or the value equivalent back to their Roblox inventory.

What I expect from you
• A responsive website (desktop & mobile) with a slick, gamer-friendly UI
• Real-time odds, automated item escrow, and instant payout logic
• Provably fair randomisation (seed reveal / hash verification)
• Admin dashboard for manual item management, user bans, and odds tweaking
• Anti-duplication, rate-limit and trade-scam protection baked into the backend
• Clean codebase in Node.js or Python (I’m flexible if you prefer a different modern stack) and a straightforward deployment guide

Completion timeline: within one month from project start, including testing on a staging server and final hand-over to production. Once the live site successfully processes deposits, runs at least one full betting cycle without errors, and completes a test withdrawal, the job is done.