Nonce

Nonce (short for “number used once”) is a unique, incrementing value assigned to each round in a provably fair crash game, ensuring that every result can be independently verified and was not manipulated after the fact.

In a provably fair system, the outcome of each crash round is generated by combining several inputs: a server seed, a client seed, and a nonce. The nonce starts at zero or one when a seed pair is first activated and increases by exactly one with every round played. Because the nonce changes each round, the same seeds never produce the same result twice, giving every round a distinct, traceable outcome.

Here is a concrete example of how it works in practice. Suppose your active server seed hash is a3f9… and your client seed is lucky77. Round one uses nonce 1, round two uses nonce 2, and so on. After you reveal your server seed, you can plug all three values into the published hash function yourself and confirm that the crash multiplier shown in round 47, for instance, matches what the algorithm actually produced at nonce 47. If the numbers do not match, the game is provably unfair.

The nonce is visible to players at all times inside the fairness or bet-history panel of a reputable crash game. Platforms that implement provably fair mechanics — including Pigaboom — expose the current nonce alongside the seed hash so you can audit any round without relying on the casino’s word alone. This transparency is the core promise of provably fair gambling: the math is open, and the nonce is the counter that keeps it honest.

One practical note: the nonce resets to zero whenever you generate a new seed pair. If you change your client seed mid-session, your nonce counter restarts, which is worth remembering when reconstructing your full round history for verification.

See also: Provably Fair Explained