Vault777

Vault777 is a fully on-chain gambling platform on Arbitrum where dice, roulette, crash and slot outcomes are generated by contracts, so betting, drawing and payout happen in one flow without a centralised server deciding results. The platform charges 2% of each stake and pays out immediately.

Mechanically, randomness comes from Chainlink VRF, and once a seed arrives the contract computes and settles the result by the game's rules, with both the request and the response leaving an on-chain record anyone can check; the liquidity pool is kept separate from payout limits, and each game carries a maximum stake to cap per-round exposure. The contracts passed a CertiK audit on 17 December 2025. Its users are on-chain players who want verifiable outcomes. Public records show roughly 357,000 bets and about 185 million USD in cumulative volume, and the team has published the payout ratio per game along with where the fee goes.