◆ True Randomness

Your dice normally roll on your browser's own random number generator. That generator is excellent. It is genuinely unpredictable, and there is no practical way to make a d20 fairer than it already is.

What it cannot do is prove anything to you.

True Randomness rolls your dice on the NIST Randomness Beacon instead: a 512-bit random pulse published by the US National Institute of Standards and Technology every 60 seconds, cryptographically signed and chained to the pulse before it.

• Every roll carries its pulse. You see which pulse it came from, and a link to NIST's own record of it.
• You can check it yourself. Fetch the pulse from NIST, verify their signature, and see the exact number your roll was cut from.
• One payment, forever. No subscription, no roll limits, no quota to run out.
• It follows your account. Sign in on any device and it is there.

A single payment, not a subscription. You will not be charged again and there is nothing to cancel. We do not refund change of mind. If anything goes wrong, tell us.

The beacon is public, so the same pulse goes out to everyone at once. Your rolls are cut from it with a key held on our server, which is what keeps them yours alone.