# Verifiable Outcome Engine (VRE)

> On-chain proof of who won. VRE commits outcome rules on Solana before a result exists; anyone recomputes the result from the transaction signature using public RPC data. Solana devnet only. Canonical program 6QtLot4uztCfjUuPreoiYPc3e1gH2fg6pq8hKYyvCP6B. SDK verifiable-outcome-sdk 0.9.1 on npm.

## Docs

- [Protocol specification, Markdown](https://verifiableoutcome.online/spec.md): guarantees, randomness paths, artifact formats, replay rules, reason codes, HTTP API, SDK
- [Protocol specification, HTML](https://verifiableoutcome.online/spec): same content for people

## Verify

- [Verifier page](https://verifiableoutcome.online/verify): open /verify?sig=<signature>
- [Replay API](https://verifiableoutcome.online/spec.md): POST /api/replay with {"signature": "<signature>"}

## Optional

- [Runnable examples](https://verifiableoutcome.online/examples): keyless devnet draws
- [Resolution paths](https://verifiableoutcome.online/protocol-paths): interactive overview
- [Build guide](https://verifiableoutcome.online/build)
- [Embeddable widget](https://verifiableoutcome.online/widget)