Stake Crash: How a Provably Fair Crash Game Works and What a Check Proves

Stake Crash is the crash game Stake runs on its own site. It is presented as provably fair: results come from values committed before play, and a revealed value can be checked afterwards. We have no first-hand source recorded for its return figure, so we show none. A check proves a round was not changed; it does not prove the overall return.

How does a Stake Crash round work?

Stake Crash follows the standard crash loop described in Crash Games 101:

1. Bets. Players place stakes during a short countdown, optionally with an auto cash-out target.
2. The climb. A multiplier rises from 1.00x in real time.
3. Cash out or crash. Players cash out at any moment; anyone still in when the round crashes loses the stake.
4. Reveal. The crash point is shown, and the next round begins.

It is one of a group of games that a gambling site runs itself rather than licensing from a separate game provider. On this site such games appear as Stake Crash, BC.Game Crash and Roobet Crash. Their names appear as plain text; we never link to the sites themselves.

What is the return, and why don't we show one?

We have no first-hand source recorded for Stake Crash's return figure, so we show none, in this article or on the game page. Figures quoted in reviews and forums are not repeated here until a primary source is recorded.

The general arithmetic still applies to any game. For example, a game stated at 98% has a house edge of 2%, so each 100 units staked cost 2 units on average. That edge applies to every stake, including winnings bet again, and crash rounds are fast. Crash Game Economics shows why a game with a high stated RTP can still cost more per hour than a lower-RTP game played slowly.

Whether a game returns what is stated is a counting question. Stake Crash is low on the lab's collection list, so there is no measurement yet. The game page shows its status.

How are provably fair results produced?

Provably fair crash games generally use one of two designs. Which one a game uses is set out in its own fairness documentation; we describe both in general terms and do not assign either to a named site.

A pre-committed hash chain, for shared rounds. A long chain of hashes is generated in advance, each derived from the next. The final hash is published before play, and the chain is then used backwards, one hash per round. Because each revealed hash must hash to the one shown before it, a round cannot be inserted or swapped without breaking the chain.

Server seed, client seed and nonce, per player. The server commits to a secret seed by publishing its hash. Each result is computed from the server seed, a client seed the player can usually set, and a counter that rises with each bet. After the server seed is revealed, the player can recompute their results.

In both designs, the step from hash to multiplier is a formula the game documents. A common pattern reads part of the hash as a uniform random number and converts it so that the chance of reaching any multiplier falls in proportion to the multiplier. Reading the Multiplier Distribution explains why this produces mostly low rounds and a long tail of high ones.

How do you check a round?

The general steps, whichever design applies:

1. Note the commitment shown before play: the chain's published hash, or your server seed hash.
2. Get the revealed value after the round or after the seed is retired.
3. Check the commitment. Hash the revealed value and compare. Our hash commitment check does this in your browser and sends nothing to us.
4. Recompute the result, if the game documents its formula, and compare it with the crash point you saw.

How to Verify a Provably Fair Hash Yourself explains each step in more detail.

If a check fails, rule out the usual mistakes first: the wrong round, the wrong client seed, the wrong counter, or a formula from a different game. A genuine mismatch on a correct check is serious, and worth documenting carefully.

What does a passing check prove?

A passing check proves the round's result was fixed before bets were placed and was not changed afterwards. That is a meaningful guarantee.

It does not prove:

• The overall return. A formula could be honoured perfectly and still return less than stated. Only a count of many rounds tests that.
• Neutral seed timing. In per-player designs, when seeds are retired is a separate question. See Seed Rotation.
• Anything about the next round. You can only check a value after it is revealed, which is after the round.

What myths attach to Stake Crash?

The same ones as every crash game:

• Predictors. Tools that claim to read the next crash point from past ones cannot see an unrevealed value. See predictor bots.
• Patterns. Runs of low rounds are normal and do not make a high one due. See patterns and hot hours and The Streak Illusion.
• Doubling after a loss. Within a session, doubling usually ends in a small win, until a losing run outgrows the bankroll or the bet limit and one loss wipes out the many small wins. Every bet keeps the same house edge. See the martingale check and try the martingale simulator.

A provably fair design answers "was this round changed?" It does not answer "can I beat this game?" History describes behaviour. It does not predict the next round.