Provably Fair

Provably fair is a cryptographic verification system that allows players to independently confirm that the outcome of each game round was not manipulated by the casino or its software.

Traditional online casinos rely on third-party auditors to certify their random number generators. Provably fair removes the need to trust a middleman entirely. Before each round, the server generates a hashed seed and shares it with the player. After the round concludes, the full seed is revealed, and the player can use a publicly documented algorithm to recalculate the result themselves. If the numbers match, the outcome was genuine.

In crash games specifically, provably fair applies to the multiplier at which the round ends. The crash point is derived from a combination of a server seed, a client seed, and a nonce — a counter that increments with every round. Because the server seed is committed to (via a hash) before the round begins, the casino cannot alter the crash point after bets are placed. Games like Pigaboom implement this system so players can audit every single round directly from their account history.

Here is a simplified example of how verification works: suppose the server seed hash published before a round is a3f9…. After the round crashes at 2.41×, the casino reveals the full seed. You run it through the same SHA-256-based formula the game uses and get 2.41×. The values match — the result was predetermined and unaltered. If they did not match, that would be evidence of manipulation.

• Server seed: generated by the casino before the round
• Client seed: contributed by the player, preventing the casino from pre-selecting outcomes
• Nonce: ensures each round produces a unique result even with the same seeds

Not every crash game that claims to be provably fair publishes a clear verification guide. Always check that the casino documents its exact algorithm and that independent tools exist to audit results before you play.

See also: How Provably Fair Works in Crash Games