Spent a week verifying the crash game RNG on BC.Game. The provably fair system uses a server seed + client seed + nonce. You can verify each round on their fairness page. I pulled 200 rounds and ran chi-square test — the distribution is statistically fair. The hash chain is also verifiable end-to-end. For anyone skeptical, the math checks out. Crash multipliers below 2x happen roughly 50% of the time as expected.