Roulette
Verify any Roobet Roulette round. The outcome is HMAC-SHA256(rouletteHash, ETH-block-salt) reduced to one of {14× Green, 7× Bait, 2× Red, 2× Black}. The ETH block hash is the trust anchor — Roobet commits to it before the session starts. See the previous 100 rounds of the session in one go.
Frequently asked
Is Roobet Roulette really provably fair?⌄
Yes. Roobet publishes a cryptographic commitment (the hash of the server seed) for each round BEFORE you bet. Afterwards the server seed is revealed and anyone can recompute the outcome — which is exactly what the verifier above does. If the computed result matches the shown one, the round wasn't manipulated.
How do I verify a Roobet Roulette round?⌄
Paste the revealed server seed into the form above. The verifier re-runs the official math and shows you the exact result, step by step. Everything runs in your browser — your seeds never leave the device.
Where do I find my Roobet seeds?⌄
On your Roobet account's fairness / seed page. There you can rotate the server seed: rotating reveals the old one (so you can verify all your previous bets) and commits a fresh hash for the next ones.
Can Roobet cheat on Roobet Roulette?⌄
Not without getting caught. The server-seed hash is published before the bet, so Roobet can't change the seed after the fact — any change would produce a different hash than the committed one. That's what makes the game verifiable.