Stake’s in-house Originals — Plinko, Mines, Crash, Dice and the rest — run on a mechanism called provably fair, and it’s worth being precise about what that word actually promises, because it is not a promise about your odds.
How the check works
Before a round starts, the server generates a secret value (the server seed) and shows players only its cryptographic hash — a scrambled fingerprint that can’t be reversed to reveal the original but can later confirm it once revealed. The player supplies a client seed, and a nonce increments with every bet on that seed pair. The round’s outcome is calculated from all three inputs together. After the round, the casino reveals the original server seed, and the player can hash it and check that it matches the fingerprint shown before the bet was placed — proof the seed wasn’t swapped after the casino already knew which way the round would go.
That’s a checkable claim about one specific round of Dice or one Crash multiplier. It differs from what an RTP certificate does for a third-party slot:
| Provably fair (Stake Originals) | RTP certificate (third-party slots) | |
|---|---|---|
| What it verifies | One specific round wasn’t altered after the seed was committed | The average return across a very large number of logged spins |
| When it can be checked | After each round, from the revealed seeds and nonce | Never for one spin — only in aggregate, via the lab’s certificate |
| Changes the house edge? | No — confirms process, not odds | No — the RTP figure already bakes in the edge |
Source: publicly documented provably fair mechanics (server seed / client seed / nonce hashing) as implemented in Stake Originals, set against standard independent RTP-testing practice; a methodology comparison, not a measured statistic.
Provably fair does not make a game more beatable, does not shorten the house edge, and does not predict the next roll — it confirms, after the fact, that this roll wasn’t rigged once a bet was already riding on it. A perfectly verifiable Dice round and a perfectly audited slot can both still be games a player loses on average, by design; verifiability is trust in the process, not better odds.
Our rating gives Stake 4.9/5 for gameplay, tied with security and banking as its strongest sub-scores. Being able to check the math after every round, rather than trusting a periodic audit a player never sees applied to their own session, is part of why. For the mechanics on specific titles, see our Plinko, Crash and Dice pages; our ratings methodology explains where this fits into a security score built mostly around licensing and encryption.