Healthcare & Verifiable Credentials
The COVID-19 pandemic accelerated interest in digital health credentials. Beyond vaccination certificates, verifiable credentials can transform how we manage health records, verify professional qualifications, and protect patient privacy.
Privacy-First Design
Health information is among the most sensitive personal data. Verifiable credentials enable verification without unnecessary disclosure.
Selective Disclosure
Prove vaccination status without revealing which vaccine, date, or location.
Patient Control
Patients decide what to share and with whom, maintaining autonomy over health data.
No Central Database
Verification doesn't require querying a central health record system.
Offline Verification
Critical for field operations where internet connectivity may be limited.
Healthcare Use Cases
| Use Case | Privacy Need | Offline | Examples |
|---|---|---|---|
| Vaccination Records | High (selective disclosure) | Often required | COVID-19 certificates, childhood immunizations |
| Professional Licenses | Medium | Helpful | Medical licenses, nursing certifications |
| Insurance Credentials | High | Helpful | Health insurance cards, coverage verification |
| Patient Identification | Very High | Required | Hospital patient matching, prescription pickup |
Lessons from COVID-19 Certificates
EU Digital COVID Certificate
European Union
Over 2.3 billion certificates issued across 80+ countries. Demonstrated large-scale VC infrastructure is feasible.
- Interoperable across 80+ countries
- Offline verification
- Privacy-preserving design
SMART Health Cards
VCI Coalition
Open standard adopted by US states and healthcare providers for vaccine records and lab results.
- QR code based
- FHIR compatible
- Widely adopted in US
Regulatory Considerations
HIPAA Compliance (US)
HighThreat
Health credentials may contain Protected Health Information (PHI) subject to HIPAA regulations.
Mitigation
Design credentials to minimize PHI. Use selective disclosure to share only necessary data. Ensure proper BAAs with wallet providers.
GDPR Considerations (EU)
HighThreat
Health data is a special category under GDPR requiring explicit consent and additional protections.
Mitigation
Implement strong consent mechanisms. Enable data portability. Provide clear privacy notices at presentation time.