VRE
Verifiable Outcome Engine
Demo Showcase · Three use cases, one proof primitive
Live on Solana devnet · Partner Draw API
Partner API key
Required for /api/partner/draw calls
🎟
weighted_random
NFT Raffle
6 participants with equal weight. Winner is selected on-chain — result is verifiable by anyone with the tx signature.
Formula
weighted_random
Participants
6 wallets
Winners
1
Participants
Draw Winner →
🏆
rank_desc
Trading Competition
6 traders with random PnL scores. Highest rank wins. The selection rule is committed on-chain before the result is written.
Formula
rank_desc
Metric
PnL score
Winners
1
Leaderboard
↻ Randomize scores
Pick Winner →
🌡
closest_to
Weather Prediction
Each participant guesses the current temperature in a random city. Closest guess wins — target is real live weather data.
Fetching weather…
Guesses
↻ New city + guesses
Reveal Winner →