Before you play, the server commits to a random server seedand shows you only its SHA-256 hash — enough for you to later prove the seed wasn't changed after the fact, without seeing it yet. Every round you play combines that seed with your own client seed and a per-round nonce through HMAC-SHA256(server seed, clientSeed:nonce:block) to produce the round's raw randomness. Once the seed pair stops being used, the raw server seed is revealed, and anyone can recompute every round played against it.
The 32-bit integer below is the one shared primitive every game resolves from — reduced to a die roll, a card, a mine layout, a raffle's winning ticket, whatever that game needs. The reduction differs per game (that's just arithmetic on a number you can already see), but the random source underneath is identical everywhere, including every PvP match and the raffle draw. Each game's own fairness panel shows you the exact seed, client seed, and nonce it used, so you can drop them straight into the verifier below.
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