Reviews that count only from verified unique buyers
Advanced24h2–3
EAS attestSolidityNext.js
16/20Zero-Knowledge Age Proof
Prove you are over 18 without revealing your birth date.
Advanced30h2–3 people17/20 fit
Build Zero-Knowledge Age Proof for websites with age limits in ~30h with 2–3 people. Stack: ZK circuits + Circom + Next.js.
Why it wins: Privacy with cutting-edge cryptography.
Build flow
01 · Problem
Age checks collect far more personal data than needed.
02 · Solution
Generate a zero-knowledge proof from a signed credential that the holder is over a threshold, verified by the website or a contract.
03 · Build
- 1Design the circuit
- 2Issue test credentials
- 3Generate proofs
- 4Verify
04 · Demo
Pass an age gate while the site never sees the birth date.
MVP checklist
- Credential issuance
- Proof generation
- Verifier
- Privacy explainer
Tech stack
| Tech | Role | |
|---|---|---|
| ZK circuits | Zero-knowledge proofs | Chain |
| Circom | Tooling | Tool |
| Next.js | Frontend + API routes | Web |
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