500 Casino Keno verifier
Independently check any 500 Casino Keno bet. Keno draws ten numbers from a field of forty. Faircheck reproduces the exact draw from your seeds so you can check the numbers against the ones you picked.
Long-running crypto casino (formerly CSGO500) with provably-fair originals on the seed/nonce model.
Engine: Stake method (HMAC-SHA256) · established 2016 · 9 verifiable games · ↻ 2026-08-14
How to verify 500 Casino Keno
- Reveal the seed. Open 500 Casino’s provably-fair panel and rotate your seed pair — this reveals the previous server seed and shows the SHA-256 hash it was committed to before you bet.
- Find the nonce. Each bet on a seed pair has an incrementing nonce. Use the nonce of the exact Keno round you want to check.
- Paste & verify. Drop the server seed, client seed and nonce into the form above. Faircheck recomputes the drawn numbers and confirms the seed hash matches.
The Keno formula
Bytes from HMAC-SHA256(serverSeed, `clientSeed:nonce:round`), converted to floats and mapped per game. The server seed is committed as a SHA-256 hash before the bet and revealed when you rotate seeds.
Ten floats are drawn from the HMAC-SHA256 stream.
Each float selects a tile from the remaining pool of forty, producing ten distinct numbers.
The draw is identical for everyone holding the same seed pair and nonce.
Keno verification FAQ
Numbering?
Tiles are numbered 1 to 40. Faircheck returns them sorted for easy comparison.