Provably fair hash verifier

SHA-256 of server seed (compare with the pre-round hash)

4a05c8488ceda7f58944da860f399b7a868944aacc16db1068097f582332d9c2

HMAC-SHA256 (key = server seed, message = client:nonce)

c3de1dff4b69246ddfa98d67d6a9c0609baa340b66ed2f64b7347c0ff5cb9b18

Derived crash point

4.21x

Bustabit mode: paste the game hash in the server seed field and keep bustabit's salt in the client seed field. Nonce and house edge are ignored; Bustabit's formula has a fixed 1% edge.

Algorithms differ by game and provider. The generic mode shows the standard method; it will only match a casino's result when that casino uses the same formula.

Open source on GitHub (MIT): same code, CLI and tests