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Provably-fair verifier

Every AviUltra round commits a SHA-256 hash of its server seed before betting opens, then reveals the seed after the crash. Paste the seeds from any round below and this page recomputes the crash point locally in your browser. No data leaves your device.

How this works
  1. Take HMAC-SHA256(server_seed, `${client_seed}:${nonce}`) — a 64-char hex output.
  2. Read the first 13 hex chars as an integer and divide by 2^52 to get a uniform number in [0, 1).
  3. Map that uniform through the crash-point distribution's inverse-CDF and round to two decimals. The distribution is 1% instant crash, 60% 1.01x–1.89x, 38% 1.9x–9.99x, 1% 10x–50x.
  4. Optionally SHA-256 the server seed and check it matches the hash the server committed before the round. Same seed in, same crash point out — nothing to hide.