Proof of Execution
A process ran exactly as declared, on inputs fixed in advance: a prize draw today; selections, allocations, calculations and scheduled actions next.
Independent proof of execution
Don't trust us.
Check.
Veritrus runs draws and other processes for platforms, and returns every result with a proof anyone can verify in their own browser, without having to trust Veritrus, the platform, or the person running it.
- Inputs locked before anyone can know the outcome
- Public randomness nobody controls
- Signed, logged, and checkable forever
What Veritrus proves
Three kinds of proof. One standard of trust.
Each proof is a permanent record with its own identifier, open to anyone, checkable without asking us.
Proof of Authenticity
A file, document or item record is what it claims to be: registered by a verified source, timestamped, and anchored on public blockchains where it adds weight.
Proof of Origin
Verified creators and organizations, so every proof can name a source you can trust, with a public track record built from the log.
Who it's for
For anyone whose result has to be believed
Live (test)
Platforms and apps that run draws
Whatever your app does, members can always suspect it picked the winner.
Live (test)Players and members
"Was that draw rigged?" Until now you could only take someone's word for it.
Coming soonOrganizers, groups and creators
Paying someone to draw on camera is slow and costly, and still doesn't stop the accusations.
Via the API now · tools comingBusinesses running promotions
Disputes, complaints and audit questions long after the winner is announced.
PlannedSchools, clubs, housing and public bodies
Selections and allocations that the people affected can challenge, and often do.
PlannedAuditors, researchers and regulators
Proving a sample wasn't hand-picked, to people who weren't in the room.
How a draw is proven
Fixed first. Random from outside. Proven forever.
Commit
The platform's entries are fingerprinted and Veritrus seals a secret seed, before the outcome can be known. Nothing can change after this point.
Execute
At the announced moment, a public random value from the League of Entropy's drand beacon is mixed in. Nobody, not even Veritrus, could know it in advance.
Prove
Veritrus reveals its seed, signs the result, and writes it to a public, append-only log. Anyone can recompute the winner and check every step.
Why it's different
Most services ask for your trust. We give you the means to check.
Random-number sites and draw services can show that a result came from them. What they can't show is that it was fixed fairly in advance: that nobody, including them, could have chosen it. A video of someone drawing a name is better than nothing, but it can't be re-run.
With Veritrus, the entries are locked before the draw, the randomness comes from a public beacon nobody controls, and the whole result can be recomputed by anyone, years later, with open tools. If anything had been changed, the check fails.
Run your draws through Veritrus
For platforms, groups and organizers that need results nobody can question: a small API, results within a few seconds of the draw time, and a proof link for every winner.