✦ A quick word before your ride
Randomize Fun chooses heads or tails from the browser’s cryptographic random source, then renders the coin animation locally. Every flip records both outcomes, the selected index, random bytes, timestamp, and SHA-256 digest. The verifier can detect a modified saved payload, while reduced-motion users receive the same audited result without animation.
✦ Midway game · proof included
Heads or Tails Coin Flip
Flip a 3D coin using cryptographic random selection and inspect the complete proof.
✦ Proof booth
Fairness & entropy audit
Each proof commits the entries, weights, random bytes, result, timestamp, nonce, and previous proof digest. Recomputing SHA-256 detects later changes; it does not prove that a dishonest host committed the inputs before drawing.
- Normalized entropy
- 0.00%
- Entropy
- 0.000 bits
- Chi-square
- 0.000
- p-value
- 1.0000
- Verified draws
- 0
Observed result frequency
3 degrees of freedomThe sample is too small for a reliable chi-square interpretation (expected count below 5).
Recent proof hashes
Your first result will appear here with its SHA-256 verification digest.
How to use Heads or Tails Coin Flip
- 1. Choose wood, marble, or glass.
- 2. Press Flip the coin.
- 3. Share the complete verification link from the audit panel.
Frequently asked questions
Can animation timing change the answer?
No. The audited result is selected before the visual animation starts.