Every round is derived from a server seed (committed as a hash before you play), your client seed, and a round number (nonce). After the operator rotates their seed, it is revealed — and anyone can check it here. Everything runs in your browser; no request leaves this page.
sha256 of the revealed server seed must equal the hash you saw before playing.
The exact random numbers your round consumed — HMAC-SHA256(server seed, client seed : nonce : game), sliced into 52-bit floats. Identical maths to both game engines, pinned by shared test vectors.
Full round replay (grid, card, multipliers) is available to operators via
POST /api/v1/verify — slots and instant
games alike; a disputed revealed card can be
audited without seeds via POST /api/v1/verify-card —
see the docs.