Prove your raffle was fair.

Every draw is bound to a signed, chained, publicly verifiable randomness pulse. You get a certificate anyone can check — no trust required, no "just believe us."

Start a fair draw See how it works
Commit-then-reveal

You can't rig it

The entrant list is hash-committed before the winning pulse is known. The operator can't influence the outcome — mathematically.

Signed certificate

Anyone can verify

Each draw produces an Ed25519-signed certificate. Share a link; winners and auditors recompute the result independently.

Quantum-sourced

Real entropy

Draws bind to public beacon pulses with signed source metadata. The source and assumptions are published with every pulse.

How it works

1

Commit your entrants

Paste your entrant list. It's hashed and frozen before any randomness is drawn.

2

Bind to a pulse

The draw locks to a public beacon pulse before the outcome is derived.

3

Get a certificate

Winners are derived deterministically and signed. Share the public verify link.

Live demo

Try a provably fair draw

Run a real draw against the live beacon. We commit 10 sample entrants, wait for the next pulse, and show you the signed winner — every value below is real, pulled from the live response, not simulated.

Pricing

Don't want to integrate anything? We'll run the draw for you and send you a verification link your audience can check independently — [email protected].

Free

$0
per draw
  • Up to 100 entrants
  • 10 draws a day
  • Entry links, rerolls, public proof
Get started

Business

Custom
usage-based
  • Over 20,000 entrants
  • API volume & integration help
Talk to us

Paid plans are sold through RapidAPI, which handles billing and keys. The free tier stays here.

Free tier

Get your free API key

Enter your email to receive a free key: 10 draws a day, up to 100 entrants each. Your key is shown once — copy it immediately.