Check every box
Every box is decided by two dice rolls. You can roll them again yourself and see that nobody changed your result.
We lock our secret
Before you play, we pick a secret and show you its fingerprint. If we changed the secret later, the fingerprint would not match.
You mix in yours
Your own seed goes into every roll, so we cannot know or pick your results in advance. Change it whenever you like.
Reveal and check
When you start a new seed, the old secret is revealed. Now any box you opened with it can be checked, right here.
Check a box
Paste a box id from your history, or try one of ours.
Every row in your history has a Verify link.
The check runs in your own browser, so you do not have to take our word for it.
Your seeds
Verify it yourselfThe exact formulas, for anyone who wants to check outside this page.
- Fingerprint
- SHA-256(serverSeed) must equal the server seed hash shown before you played.
- Roll 1 (u1)
- HMAC-SHA256(key = serverSeed, message = "clientSeed:nonce:tier"), first 52 bits ÷ 2^52.
- Roll 2 (u2)
- Same, with message "clientSeed:nonce:band".
- Tier
- u1 picks a tier from the box’s odds table (shown under Show the numbers).
- Multiplier
- u2 picks a value inside that tier’s range, limited by the box’s highest multiplier.