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Provably Fair Verification: Reproduce the Result, Not the Slogan

Provably fair is a cryptographic audit method for a defined game implementation. It can show that a committed secret and player input produced a result under a published algorithm; it does not prove game suitability, operator solvency or legal status.

Open the verified play route

The evidence workflow

  1. Capture the commitment

    Before play, save the hash of the hidden server seed and the displayed client seed. A server seed revealed only after the result cannot prove that it was committed in advance.

  2. Record the nonce

    Each bet usually increments a counter. Save game, round ID, nonce and any cursor or round component described by the implementation.

  3. Rotate and reveal

    Use the platform’s seed rotation control after the sampled play so the prior server seed becomes visible. Never disclose wallet or account recovery secrets; game seeds are separate.

  4. Hash the revealed seed

    Apply the stated hash function to the revealed server seed and compare it exactly with the pre-game commitment. A mismatch fails the first verification gate.

  5. Reproduce the outcome

    Run the published algorithm with the server seed, client seed and nonce. Confirm both the raw random value and the mapping into the visible game result.

What each record proves

RecordCaptureDecision use
Server-seed hashPre-game commitmentPrevents later seed substitution
Client seedPlayer-visible inputAdds user-controlled material
NonceRound counterSeparates successive results
AlgorithmValue-to-result mappingMakes reproduction possible

Verification has a defined boundary

A passing sample supports integrity for that recorded round and algorithm. It does not establish the advertised RTP, test every game, or rule out withdrawal and account problems. Preserve the verifier version and calculation so another person can reproduce the same outcome rather than trusting a green tick.

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Frequently asked questions

Is provably fair the same as an audited RTP?

No. Round reproducibility and long-run return configuration answer different questions.

Why save the seed hash before playing?

It proves the operator committed to the hidden seed before revealing the result.

Can a third-party verifier be trusted automatically?

Reproduce the documented calculation independently when possible and keep the algorithm version.