Run transparent elections where each member votes once
Beginner10h1–2
SolidityScaffold-ETHNext.js
17/20Commit-Reveal Hackathon Judging
Judges submit hidden scores that are revealed together so nobody copies others.
Intermediate16h2–3 people18/20 fit
Build Commit-Reveal Hackathon Judging for hackathon organisers in ~16h with 2–3 people. Stack: Solidity + Foundry + Next.js.
Why it wins: Meta idea that hackathon judges love.
Build flow
01 · Problem
Judges anchor on each other's scores and results feel unfair.
02 · Solution
Judges commit hashed scores, reveal after the deadline, and a contract tallies results with a public audit trail.
03 · Build
- 1Write commit-reveal contract
- 2Test it
- 3Build judge UI
- 4Show results
04 · Demo
Run a judging round with three judges and reveal results live.
MVP checklist
- Commit phase
- Reveal phase
- Tally
- Audit trail
Tech stack
| Tech | Role | |
|---|---|---|
| Solidity | Smart contracts | Chain |
| Foundry | Contract testing + deploy | Chain |
| Next.js | Frontend + API routes | Web |
Reference repos
Open-source projects you can build on. Links checked 2026-10-31.
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