Commit before the bet
Each player has a server-seed commitment, client seed and nonce. Before a round, NEXA exposes the SHA-256 hash of the server seed, not the seed itself.
Generate the outcome
The engine derives deterministic random bytes using HMAC-SHA256 over the server seed, client seed, nonce, game key and counter. Payout calculations occur on the server.
Reveal and verify
When the seed is rotated, the previous server seed is revealed. Players or auditors can reproduce the commitment and deterministic outcome from the published inputs.
RTP
The game screen displays configured theoretical RTP/house-edge information. Final production RTP and game versions must match the independently certified build.