Crash
任意のRoobet Crashラウンドを検証できます。Roobetはクライアントシードをラウンドごとの公開鍵に置き換え、ベットごとに両方のシードをローテートするため、ノンスはありません — 公開鍵がラウンドごとのランダム性コミットメントです。数学：HMAC-SHA256(serverSeed, publicKey) → 52ビットスライス → 33分の1インスタントバストチェック → Stakeファミリーのfloor公式。
Frequently asked
Is Roobet Crash 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 Crash round?⌄
Paste the revealed server seed and the round public key 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 Crash?⌄
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.