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Data Fiduciary
Kestrova Health · Hyderabad cluster (fictional)
Overview

Synthetic tenant: Kestrova Health (fictional), 442 receipts. Sixty days of activity are generated deterministically and anchored to the current hour, so expiry and breach clocks are live. Every receipt is signed at load with Ed25519 key ksv-47c7d4987f3a and re-verified by the same code the public verify API runs. Consents you sign in the patient journeys appear at the top of the registry, held only in your browser.

Registry

Consent receipt

Inpatient admission · John W***

Kestrova Gachibowli · issued 28 Oct 2026, 12:30 pm IST · valid to 26 Apr 2027 · v1

Verified

The hash recomputed from the stored content equals the stored hash, and the Ed25519 signature over that hash checks out against the published key.

Purposes on this receipt

  • Treatment and careneeded for the service Granted
  • Diagnostic lab sharingneeded for the service Granted
  • Insurance and TPA sharing Granted
  • Updates to family contactRefused

Who, and how sure

Patient
John W*** · KSV-HYD-10004
Identity
L4 Passport + face liveness
Factors
passport document: checked on deviceface liveness: checked on device
Capture
ceremony · self-serve · kiosk
Teach-back
understood · 0.88 · live model · answer hash 5cfd7abd8d35

What was shown, and the seal

Notice
notice.ipd_admission v2026-09.1 · English
Notice hash
184343f127d606bac817839ad706047b3e836af926c539bb81fa4c2661c253bf
Receipt hash
c120e7edf4bbdf598e242efe6343603a8f7424ce751001af8ad0e4d30362490a
Signature
XgdwPLzuziRUmmGru9K47H1ZDVFYfNudEA8AfoiegYAGUz0PsGT76ykvV23CKqpHJBVtLcI4WWjXyFIWJyDsCw
Algorithm and key
Ed25519 · ksv-47c7d4987f3a

Audit chain entries

  1. #517 receipt issued · 28 Oct, 12:30 pmf99e9bbfdcf04303

Each entry hashes the previous one, so removing or editing an entry breaks every entry after it.

FHIR endpoint