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Luckie’s outcomes are provably fair: the result is locked in before you play, and anyone can recompute it afterward. The server cannot choose the winner.

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Commit → reveal

1

Commit (before the game)

When a room is created, the server generates a secret server seed and publishes sha256(server_seed) — a sealed commitment. The outcome is now fixed.
2

Play

Players join and deposit. Each entry also contributes a client seed, so no single party controls the inputs.
3

Reveal (after settle)

Once the game settles, the server reveals the original server seed. Anyone can hash it and confirm it matches the commitment published at the start.

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How the winner is derived

The winner is a deterministic function of inputs that were all fixed before the reveal: 
winner = f(server_seed, client_seeds, nonce)
Because the server seed was committed up front, the server could not have known or chosen the winner — and because it’s revealed afterward, you can recompute the exact same result.

Verify a game yourself

Step-by-step: pull a game’s proof and recompute the winner.