Provably fair draws
A random number generator your entrants can actually check
Numbers come from the operating system’s cryptographic randomness — not Math.random(). Every draw is sealed into a proof record with a timestamp from an independent server clock.
Draw settings
Nothing is stored on our servers — the proof record is yours to publish.
Result
Your drawn numbers and proof record will appear here.
True cryptographic randomness
Numbers come from the Web Crypto CSPRNG with rejection sampling, so every outcome in the range is equally likely — no modulo bias.
Independent timestamp
The fingerprint of your draw is sent to our server, which returns its own UTC clock reading and an attestation hash.
Anyone can re-check it
Publish the record with your results. Entrants paste it into the verifier and confirm nothing was edited afterwards.