#Hash.Contact
# Verified without oversharing

Your identity. Without giving away everything about you.

Hash.Contact lets people authenticate, verify information, and securely share only what is required.

#A7K9P2# Verified# Private

Example request

Acme Hotels

Pending

Wants to verify

  • Identity verified
  • Age above 18
  • Address verified

Not shared

  • Name
  • Exact date of birth
  • Identity document number

Purpose: Hotel guest verification

Access: One-time access

Passwordless authentication

Passwords weren't designed for your identity.

Use QR login, push approval, MFA codes, and biometric protected app approval without typing a password into the requesting website.

merchant.example/login
HC

Login with Hash.Contact

No password entered here.

The browser waits for a signed approval from the Hash.Contact app.

Scan
Review
Approve
Logged In

Hash.Contact

Approval request

Approve login?

Merchant Example is requesting a one-time authentication.

Scan

Single identity

One Hash.Contact. Many relationships.

Each organization receives only the information the user authorizes for that relationship.

#A7K9P2

Identity Level 3

Government identity verified

Employer

Scoped proof only

Bank

Scoped proof only

Hotel

Scoped proof only

Marketplace

Scoped proof only

Healthcare

Scoped proof only

Government service

Scoped proof only

Ecommerce

Scoped proof only

Applications

Scoped proof only

Privacy

Share proof, not unnecessary personal data.

Hash.Contact is designed to minimize raw data exposure while still helping businesses complete legitimate verification flows.

Traditional

  • Name
  • Mobile
  • Email
  • DOB
  • Full Address
  • ID Copy

Hash.Contact

  • Identity Verified
  • Age 18+
  • Address Verified

Use cases

One privacy pattern across many real workflows.

Hash.Contact can support digital login, physical check-in, verification, onboarding, recovery, and regulated access flows without changing the user's control model.

Use-case coverage

15 configured categories

AuthenticationHotelsEmploymentEcommerceHealthcareEventsBankingFinTechEducationTravelTelecomPropertyGovernmentEnterpriseMarketplaces
Explore all use cases

The pattern stays the same.

A business asks for a proof, the user reviews purpose and duration, and unnecessary raw data stays out of the exchange.

Authentication

Passwordless customer login

Consumer apps

User approvalDevice-bound challenge

Lower account recovery load

Hotels

Private guest check-in

Hotels and travel stays

Identity verifiedAge above 18

One-time access

Employment

Credential verification

Hiring teams

Employment statusEducation credential

Reusable proof

Ecommerce

Age-gated checkout

Online merchants

Age above thresholdPayment-session approval

Threshold proof

Healthcare

Privacy-first intake

Clinics and care providers

Identity verifiedContact permission

Consent trail

Events

Physical venue check-in

Venues and event teams

Ticket holder verifiedAccess status

Fast entry

Progressive assurance

Verification can grow with the moment.

Users should not be forced to complete maximum verification before a specific business purpose requires it.

Level 0

Complete

Account Created

A Hash.Contact account exists with no extra identity requirement.

Level 1

Complete

Contact Verified

Mobile and email verification are available for basic trust.

Level 2

Complete

Basic Identity

Name or basic profile verification can be added when needed.

Level 3

Current

Government Identity

Government identity verification is complete for higher-assurance requests.

Level 4

Available

Enhanced Verification

Address and additional credentials can be verified for specific workflows.

Level 5

Available

Advanced Assurance

High assurance remains configurable by jurisdiction and product policy.

Current assurance

success

Level 3

Government identity verified

Next available

info

Level 4

Address and extra credentials

Required now

neutral

0

No forced upgrade

Configurable

warning

Yes

Policy driven levels

Consent operations

Approvals, access, expiry, and revocation need their own UI.

The same design system supports pending requests, approved access, expired permissions, and empty states.

OrganizationPurposeSharedDurationStatus
Acme HotelsGuest verificationAge 18+, identity, addressOne-timePending
Northstar MarketplaceSeller onboardingMobile, identity30 daysApproved
ABC EmployerCredential checkEmployment statusExpiredExpired
City EventsVenue entryTicket holder, ageOne-timeCompleted
Transparent consent

Every approval has a purpose.

Requests can be grouped by organization, attribute, duration, status, or exposed contact path.

No hidden access

Empty, loading, and blocked states are designed as first-class surfaces for future backend data.

Developer experience

Integration surfaces for apps, credentials, webhooks, and events.

Mock API surfaces are clear about shape and purpose while avoiding unsupported production security claims.

Create authentication request
POST /authentication/requests
{
  "method": "qr",
  "purpose": "Customer login",
  "requested_attributes": [
    "identity_verified"
  ]
}

Example response shapes are UI placeholders only.

Secrets, signatures, and backend security controls should be implemented server-side.

EventDestinationStatus
authentication.completedProduction webhookSuccessful
verification.approvedCompliance systemSuccessful
consent.revokedPrivacy queueRetrying
document.expiredOperations queuePending

Capabilities

Identity, authentication, verification, consent, documents, and contact in one system.

Identity

Create and maintain a reusable digital identity.

Verify

Verify identity and individual attributes.

Authenticate

Passwordless QR and MFA authentication.

Share

Share approved information securely.

Consent

Control who can access what.

Documents

Maintain verified documents and masked list views.