Blockchain or decentralized gambling you mean? there will always be a middle man at a point to review your winnings and process your withdrawals. Live-Roulette running is available on most gambling platforms.
Most online casinos now run on a blockchain, with full transparency, though some may require you to KYC for some reason.


You are trolling and I think very soon, you will get fed by DT members. I thought you're are having issues with withdrawal until I see your comment about being restricted with IP address, next time before you bet on any platform, read their policy terms.