Every draw is committed before entries open and its winner decided by public randomness nobody controls. When it closes we reveal the proof, so anyone can check the result for themselves and no one has to take your word for it.
Every draw can be checked independently, by entrants, partners, regulators and you.
How long it takes anyone to re-verify a result, right in their browser.
Of your entry revenue that we take. A flat fee for the platform, nothing else.
Typical time from first call to running your first sealed draw.
Fairness isn't a promise here, it's the order of operations. The winner is locked in before entries close, decided by randomness we can't predict, and revealed so anyone can retrace every step.
When the draw is created, before a single entry exists, we generate a secret seed and publish only its SHA-256 fingerprint. The seal is public; the seed stays hidden, even from us. Change it later and the fingerprint won't match.
A future drand round is pinned when the draw is created. Its random value doesn't exist until after entries close, and no single party can predict or fake it. At draw time it's mixed with the sealed seed to pick the winning entries.
When the draw runs, the seed is revealed inside a signed certificate. Anyone can confirm the fingerprint still matches the seal and re-run the exact same maths to reach the exact same winners.
Every draw has a public certificate and a verifier page that needs no login. Your entrant opens it, the fairness checks run in front of them in the browser, and the result speaks for itself. No account, no jargon, no asking you to prove anything.
Every competition gets asked this. Right now the only answer most operators have is “trust us”. Here's a better one, and it pays you back.
Doubt is the biggest reason someone closes the tab without paying. When entrants can check the draw themselves, the hesitation disappears, and it compounds across every competition you run.
Instead of a long back-and-forth in your inbox or under a Facebook post, you send one link. They see the maths, they check it themselves, the conversation's over.
Every draw is recorded, timestamped and signed. If a partner, a payment provider or a regulator ever asks how winners are chosen, the evidence already exists, you don't have to reconstruct it.
In a crowded market where every competition looks the same, being the one that can prove itself is a genuine difference worth putting on your homepage.
If money or reputation rides on the result being fair, the same proof applies.
Cars, cash and tech draws where entrants are paying and trust is the whole business.
Where donors need to see their money was handled properly, and trustees need an audit trail.
Social and retail promotions where a rigged-looking result becomes a PR problem fast.
Your website, your payments, your branding, your entrants all stay exactly as they are. We only handle the bit where a winner is chosen, and proven.
The commit, the reveal and the winner: the core of the whole thing.
Anyone can re-run a draw's certificate on a no-login page and confirm the result. Send the link and you're done.
Winners are decided using a public drand round pinned in advance, so you couldn't rig it even if you wanted to.
Runners-up, tiered prizes and multiple winners from a single sealed draw are all covered.
Recurring monthly, weekly or daily draws, or a one-off window, run automatically at their set time.
Every draw produces a signed certificate as PDF and JSON, ready to hand to anyone who asks.
As soon as a draw completes, its winners and signed certificate are ready to pull from the API.
Every draw event is recorded and locked once written, so nothing can be quietly edited later, including by us.
We'll get your first draw running with you. Most people are live the same week.
The whole point is to take the decision out of human hands. So there are things Sealed simply cannot do.
What actually changes when someone questions your draw.
No migration, no rebuild, no downtime on your existing competitions.
Fifteen minutes. We seal a draw, reveal it and break it in front of you.
Whoever looks after your site hooks it up. We sit on the call and help.
A dummy draw end to end, so you've seen the whole flow before it's real.
Your next competition runs sealed, with a check-it-yourself link for entrants.
A commit-reveal seed mixed with drand entropy and a deterministic selection algorithm, exposed as a REST API. Create a draw, submit entries, run it, and get back a result anyone can reproduce.
Fifteen minutes is enough to see a draw sealed, revealed and checked. Bring your hardest question about fairness and we'll answer it live.