Every round's bust point is fixed before betting opens, and after the round the server reveals the seed that produced it. This page recomputes the result in your browser — the server can't lie to you.
Seeds form a hash chain played backwards: sha256(this round's seed) must equal the
previous round's seed (or the published commitment for the very first round). That proves every
seed existed before any round was played.
hmac = HMAC_SHA256(key = seed, message = salt) — both as plain text strings.h, so X = h / 2⁵² is uniform in [0,1).crash = max(1.00, floor(99 / (1 − X)) / 100).P(crash ≥ x) ≈ 0.99 / x — a 1% house edge, ~2% instant busts, median bust ≈ 1.97×. Same formula as the original bustabit v2.