One price. One draw. No renewal.
Verified Draw pricing
One-time purchase
Verified Draw
This is a one-time charge for one Verified Draw. There is no subscription, no automatic renewal, and no recurring billing cycle.
- One server-enforced draw for up to 5,000 participants and up to 10 winners
- A public verification link that anyone can open without an account
- A downloadable JSON proof package for independent recomputation
- A human-readable winner certificate and ready-to-send delivery message
- Public receipt availability for at least 12 months
Waffo Pancake shows any applicable tax before payment confirmation.
What one purchase delivers
- 1. Payment confirmation. Waffo confirms the US$1 order and returns you to the private draw access flow.
- 2. One locked draw. You paste the participant list locally, choose up to 10 winners, and execute exactly once.
- 3. Delivery files. Download the JSON proof and winner certificate, then send the public verification link and delivery message.
Limits, refunds, and support
Each purchase covers one draw only; it does not include prize handling, participant recruitment, legal notarization, or a reusable subscription.
Refund eligibility, failed-delivery handling, and executed-draw limits are stated in the Terms of Service.
Questions before or after purchase: cenfeng8023@gmail.com.
Working proof sample
Inspect the receipt before you buy
This is an illustrative receipt that passes the mathematical checks. It is not a paid order or an issued draw receipt. The verifier recomputes everything locally in your browser.
Load sample in verifierIn the verifier, paste two lines: Alice and Bob. The expected winner is Bob.
- schema
- rpt-receipt-v1
- algorithm
- rpt-draw-v1
- participant_count
- 2
- winner_indices
- [1]
- list_hash
- 390265ecb8c54c36822699c676c39ab69b3e25ed521b6d27a2b37a7395f5663c
- seed_commit
- 3d2414c0fd6de585284f9aaccee6c047053a5cd16d8fe13fcd4ddd82ca5a7324