Rules you can prove never changed
A fingerprint of your rules is locked to the public ledger before entries open, so the rules you publish are provably the ones you started with, not a single character changed.
Your prize draws become provably random and end-to-end auditable.
We help prize-draw operators meet rising regulatory demands without changing how they run a draw. You keep the entrants, the ticketing and the algorithms that pick your winners; underneath, we add the two things that make every draw independently auditable: a verifiable random seed your algorithm draws from, and a tamper-proof record that proves nothing changed. We built it on blockchain, so you don’t have to.
We record the ID; you pick the winner
Nothing about your ticketing changes. On each purchase we commit a tamper-proof fingerprint, the ticket’s ID, that can’t be forged or bought twice. Which ticket wins stays yours, picked by your own algorithm from the verifiable random seed.
A draw that can only happen once
Closing a draw is a one-time record, so any repeat is obvious, and it mints one verifiable random seed that couldn’t have been fixed in advance. Your own algorithm turns it into the winner, by your committed rules. Every instant-win play mints its own seed.
The fairness certificate you already issue, now something anyone can independently check, not just take on trust.
Don't take our word for it.
Run a real draw on the public ledger, then check it yourself, exactly as a regulator or an entrant could.
Free · no personal details · a real Aptos mainnet record · one example implementation.
Your algorithms. Our verifiable seed.
You change nothing about how you run a draw. We add just two things underneath it: public randomness your algorithm draws from, and a tamper-proof record anyone can re-check. Here is the exact split.
Stays yours
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Your entrant dataStays entirely with you. Nothing personal ever reaches us or the ledger, so there is nothing in our hands to lose, leak, or be breached for.
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Your ticketing systemUnchanged. Keep the platform, the flow and the numbering you run today; we simply fingerprint each entry as it goes in.
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Your selection algorithmsYou run the code that turns our seed into a winner or an instant-win result, by your own rules. We never pick it.
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Your rules and outcomesYou write the rules, commit them up front, and own every result. We record; you decide.
We add
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A verifiable random seedPublic, checkable randomness minted on the ledger: one seed the moment a prize draw closes, and a fresh seed for every instant-win play. Your algorithm draws from it, and we never decide the result.
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A tamper-proof fingerprintA hash of every rule, entry and closed draw, committed to a public ledger, so anyone can later prove not a single character changed.
Every draw comes out provably random and end-to-end auditable, with nothing about your draw to change.