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Verify any round using the server seed (revealed after crash), client seed, and round number.
const crypto = require('crypto');
function generateCrashPoint(serverSeed, clientSeed, nonce) {
const data = clientSeed + '-' + String(nonce);
const hmac = crypto.createHmac('sha512', serverSeed);
hmac.update(data);
const hash = hmac.digest('hex');
const h = parseInt(hash.slice(0, 8), 16);
const e = Math.pow(2, 32);
if (h % 30 === 0) return 1.00;
return Math.max(1.00,
Math.floor((100 * e - h) / (e - h)) / 100);
}
function hashSeed(seed) {
return crypto.createHash('sha256')
.update(seed).digest('hex');
}
The public hash and client seed are shown before betting. After crash, the server seed is revealed so you can verify.
Read before playing — all bets are final!
A rocket launches and the multiplier starts climbing from 1.00x upward. It can crash at any moment — at 1.01x or at 100x+. Your job is to cash out before it crashes.
1. Enter your bet amount and set your auto-cashout multiplier. This is important — if you disconnect, the game will automatically cash you out at this multiplier.
2. When the round starts, the rocket launches. Watch the multiplier climb.
3. Click Cash Out (or press Spacebar) before the rocket crashes. Your payout = your bet × the multiplier when you cashed out.
All bets are final. Once a round begins, your bet cannot be cancelled. Make sure your bet amount and auto-cashout are set correctly before the round starts.
Set your auto-cashout! If you lose connection or close the game, the auto-cashout multiplier will protect your bet. Without it, a disconnect means you ride until crash.
The maximum payout on any single bet is 50B. If your winnings reach this cap, you'll be automatically cashed out — even if the rocket keeps climbing.
Missed the betting window? Click Bet (Next Round) to queue your bet. It will automatically be placed when the next round's betting phase starts.
Every round is provably fair using HMAC-SHA512 with a dual-seed commitment scheme. Before betting opens, a public hash (SHA-256 of the server seed) and a client seed are shown. After the crash, the server seed is revealed so you can verify the result was predetermined and not manipulated.
Round results with all seeds are posted in the crash-results channel on Discord. You can also verify any round using the Provably Fair checker in the game (click the shield icon).
Good luck and fly high! 🚀
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