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Privacy-preserving verification infrastructure

Prove trust without exposing identity.

ZKShield is verification infrastructure for dating apps, community platforms, telehealth and age-restricted services. Confirm age, personhood or issuer-backed eligibility as a cryptographic proof — without collecting passports, selfies, medical records or unnecessary personal data.

Request pilot access See how it works
Built for DatingLGBTQ+ platformsTelehealthAge-gated services
zkshield · verifier console ZK
Credentialon user device
full_namesealed
date_of_birthsealed
document_nosealed
Request a proof
Verifier receivesproof only
age_over_18 = true proof verified · no personal data shared
The problem

Trust checks should not turn platforms into data vaults.

To confirm one simple fact — an age, a real person, a credential — platforms today collect documents they never wanted to hold. Every stored copy is friction for the user and liability for the business.

typical signup · collected to verify “over 18”
passport_scan.jpgstored
selfie_liveness.mp4stored
full_namestored
home_addressstored
date_of_birthstored
document_numberliability

  • User friction

    Document uploads and selfie checks make people abandon signup — especially on platforms where privacy is the entire promise.

  • GDPR and breach exposure

    Stored identity documents are a regulatory burden and a breach magnet. The safest data is the data you never collect.

  • Repeated verification

    Users re-prove the same facts on every platform, re-uploading the same sensitive documents each time.

The solution

Verify the claim, not the private data.

ZKShield turns sensitive checks into yes/no cryptographic proofs. Your platform receives only the requested proof, not the data behind it.

prove( age ≥ 18 ) → true

Prove “over 18”

Confirm age eligibility without a birthdate, a passport scan, or a stored ID photo.

prove( is_unique_human ) → true

Prove “real person”

Confirm a unique human is behind the account — without biometrics leaving the device.

prove( issuer.signed ) → true

Prove issuer-backed eligibility

Confirm membership, status or clinical eligibility signed by a trusted issuer — without exposing the underlying record.

verifier receives: proof only The verifying platform receives only the cryptographic proof it requested — not the document, record or attribute behind the claim.
How it works

Three parties. One proof. Minimal data trail.

A credential is issued once, held by the user, and proven anywhere — each platform sees only the answer to its own question.

Issuer signs a credential

A government ID provider, clinic or organisation attests to a fact once and signs it cryptographically.

Issuer SDK

User holds it in the wallet

The credential lives on the user’s device, bound to it — rather than copied into a central database.

User Wallet

Platform verifies the proof

Your service requests a specific claim and receives a yes/no proof — nothing more.

Verifier API
Use cases

Built for platforms where privacy is the product.

LGBTQ+ community platforms

Verify members without outing them — no identity documents on file.

 prove · is_member

Dating apps

Real, of-age people — without storing selfies or passports.

 prove · age_over_18

Telehealth and clinics

Confirm patient eligibility without exposing medical records.

 prove · is_eligible

Events and community organisations

Admit verified members while keeping attendance private.

 prove · has_access

Age-restricted digital services

Meet age-assurance rules without becoming an ID warehouse.

 prove · age_over_18

Workforce and partner portals

Confirm contractor, partner or role eligibility without copying identity files.

 prove · partner_verified
Privacy architecture

Designed to keep sensitive data out of your platform.

disclosure

Selective disclosure

Users reveal a single attribute, never the whole credential.

proofs

Zero-knowledge proof patterns

Claims are proven mathematically, without showing the data behind them.

binding

Device-bound credentials

Credentials are tied to the holder’s device to reduce copying and sharing.

storage

No central document database

ZKShield does not need to hold user documents, reducing sensitive data exposure.

integration

Verifier API integration

One REST call to request and validate a proof from your backend.

revocation

Validity checks without oversharing

Confirm that a credential is still trusted without revealing the underlying record.

Pilot program

Safer verification. Less data. More trust.

Start with a pilot for privacy-preserving age verification, proof-of-personhood, or issuer-backed eligibility verification.

Pilot interest

We only use this information to respond to your pilot request. Please do not submit sensitive documents or records. See our privacy notice.

Prefer email? Write to hello@zk-shield.com

No central database Device-bound credentials Selective disclosure

We’ll reply with pilot scope, integration options, and issuer/verifier fit.