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Provably Fair · StakeVerify any Stake Crash round and confirm the bust multiplier was predetermined by the seed, not decided live. A free, provably fair Crash verifier that recomputes the exact crash point from the round's seed inputs, in your browser.
Runs entirely in your browser - your seeds never leave this device.
Provably fair verification lets anyone independently recompute a game's result from its server seed, client seed and nonce - confirming the casino could not have altered the outcome after the bet. Browse all casinos & games
In Stake Crash a multiplier climbs from 1.00x until it busts, and you must cash out before the bust. The bust point is not decided as the curve rises - it is computed up front from the round's seed via HMAC-SHA256 and mapped through the crash distribution, so the entire round is predetermined.
Roughly 1% of rounds bust instantly at 1.00x, which is the house edge, and the rest follow a curve where each higher multiplier is proportionally rarer. Because the seed is committed before betting closes, the casino cannot move the bust point after seeing the bets in play.
The chance of reaching a given multiplier x is about 99/x percent, so 2x hits roughly half the time, 10x about one round in ten, and 100x about one in a hundred. Cashing out earlier wins more often for smaller multipliers; holding for big numbers wins rarely. The overall edge is about 1%, concentrated in the instant-bust rounds.
| Cash-out target | Approx. chance of reaching |
| 1.50x | ~66% |
| 2.00x | ~49.5% |
| 5.00x | ~19.8% |
| 10.00x | ~9.9% |
| 100.00x | ~0.99% |
| Instant bust (1.00x) | ~1% (the house edge) |
Crash's edge is the same no matter where you cash out, so an early-cashout 'safe' style and a late-cashout 'moonshot' style have the same expected value - they only differ in variance. Auto-cashout removes the human-reaction disadvantage but cannot beat the math. The verifier's role is to prove a bust point was predetermined, full stop.
If you play, set an auto-cashout target in advance and a session loss limit. Because about 1 in 100 rounds bust instantly, no target is ever 'safe', and chasing losses after a fast bust is the quickest way to overspend. Treat the reach-probability table above as the real odds.
No. The bust multiplier is derived from a seed you cannot see until it is revealed. No tool can know it in advance - claims otherwise are scams. This verifier only checks rounds that already happened.
Yes, and it is verifiable. The bust point is committed via HMAC before the round, and this tool recomputes it from the published seed so you can confirm nothing was altered.
The chance of reaching x is about 99/x percent, so half of rounds clear 2x and roughly 1 in 10 clears 10x. Around 1% bust instantly at 1.00x - that is the edge.
No. Auto-cashout removes reaction-time disadvantage but the expected value is identical at every target. It manages variance, not edge.
A small fixed share of outcomes is reserved for an instant bust - this is how the 1% house edge is implemented in the distribution.
Enter the round's seed details above and the tool recomputes the bust multiplier; a match confirms it was set before betting closed.
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