Crypto Loot Box Unboxing Site

I want a web platform where players deposit Bitcoin, Ethereum, or Litecoin, open randomized loot-box style cases, and instantly withdraw any winnings they decide to cash out. The flow should feel identical to popular skin-unbox sites, but with native crypto handling from start to finish... (Budget: $5000 - $10000 USD, Jobs: Bitcoin, Blockchain, Cryptocurrency, HTML, JavaScript, PHP, Smart Contracts, Web Development)