Accepting early access applications

Fraud-proof surveys.
Anonymous respondents.

Verified by math, not trust.

The first survey marketplace where every response is cryptographically verified — demographics proven via zero-knowledge proofs, audit trail on blockchain, rewards paid instantly to UPI.

Get Early Access See How It Works
👤
Verify
Aadhaar / DigiLocker KYC
→
🔒
Prove
ZK proof of demographics
→
📋
Respond
Answer survey anonymously
→
💰
Earn
Instant UPI rewards
15-30%
Survey fraud rate (industry avg)
0%
Fraud with ZK verification
0 PII
Personal data stored by platform
<5s
UPI reward after completion
// How It Works

Privacy by cryptography,
not by promise.

Traditional surveys ask you to trust the platform. ZKSurvey replaces trust with mathematical proof — your identity is verified but never revealed.

Step 01 — Verify

One-time identity proof

Verify your demographics via Aadhaar or DigiLocker. A cryptographic commitment is generated on your device. Your actual data is never sent to our servers — only the mathematical proof.

commitment = Poseidon(secret, age, city)
// stored on-chain, identity deleted from device
Step 02 — Prove & Respond

Anonymous survey participation

For each survey, your browser generates a zero-knowledge proof: "I am a verified user aged 25-34 in Bangalore" — without revealing who you are. A unique nullifier prevents double-responses.

nullifier = Poseidon(secret, survey_id)
// same user + same survey = same nullifier
// same user + diff survey = diff nullifier
Step 03 — Earn & Audit

Instant rewards, permanent proof

UPI cash hits your account within seconds. Every response is batch-anchored on Polygon — creating a tamper-proof audit trail that companies can verify but nobody can trace back to you.

anchor = MerkleRoot(responses[])
// 1,000 responses = 1 on-chain tx = $0.005
// Platform Features

Built different.

Not another survey tool with a blockchain sticker. Every feature is designed around cryptographic privacy guarantees.

🧮

Zero-Knowledge Demographics

Prove age, city, income tier without revealing exact values. Groth16 proofs generated in your browser via WASM — 5-15 seconds, 128 bytes.

⛓️

Blockchain Audit Trail

Every response batch anchored on Polygon PoS. Merkle root verification ensures no tampering. Cost: $0.000005 per response. No tokens, no speculation.

💸

Instant UPI Rewards

Rs 25-400 per survey, paid directly to your UPI. No points, no gift cards, no minimum threshold games. Real money, real fast.

🛡️

DPDPA-Native

We never collect personal data — ZK proofs mean we're exempt from most data fiduciary obligations. Privacy by architecture, not by policy.

📊

Differential Privacy Analytics

Aggregated results use OpenDP with formal privacy guarantees. Companies get statistically valid insights. Individual responses stay private.

🤖

Anti-Bot by Design

Cryptographic sybil resistance via nullifiers. One verified human = one response. No heuristics, no CAPTCHAs — math prevents fraud at the protocol level.

// Built For

Two sides. One marketplace.

For Companies

Fraud-free consumer insights

  • Every response cryptographically verified — 0% bot fraud
  • Demographic targeting backed by ZK proofs, not self-reporting
  • DPDPA/GDPR compliant by architecture — zero PII in your hands
  • Aggregated insights marketplace with differential privacy
  • Blockchain audit trail for regulatory evidence
  • API access for programmatic survey deployment
For Respondents

Earn cash, keep your privacy

  • Rs 25-400 per survey — paid directly to your UPI
  • Your identity is mathematically protected — we literally cannot see it
  • Verify once via Aadhaar/DigiLocker, participate forever
  • No tracking across surveys — each response is unlinkable
  • Quality bonuses for consistent, thoughtful responses
  • Referral rewards — earn when friends join
// Early Access Pricing

Pay for verified responses.
Not software seats.

No monthly subscriptions. No seat licenses. Pay only when real, verified humans complete your surveys.

Starter
Free
Test the platform with real data
  • 50 free verified responses
  • Basic demographic targeting
  • Standard analytics dashboard
  • Email support
Growth
Rs 80-150 / response
ZK-verified, fraud-proof responses
  • Unlimited surveys
  • ZK-verified demographic targeting
  • Advanced analytics + data export
  • API access
  • Blockchain audit certificates
Enterprise
Custom
Aggregated insights + dedicated support
  • Everything in Growth
  • Data marketplace access
  • Custom panels + longitudinal tracking
  • White-label option
  • SLA + dedicated account manager
// Early Access

Join the waitlist.

We're onboarding companies and respondents for our India launch. Early access members get priority + founding member pricing.

No spam. No data sold. We practice what we preach.

✓

You're on the list.

Your waitlist position:

#—

We'll reach out when your spot opens up.