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Data Fiduciary
Kestrova Health · Hyderabad cluster (fictional)
Overview

Synthetic tenant: Kestrova Health (fictional), 445 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 · Bhavya S***

Kestrova Kukatpally · issued 28 Sep 2026, 9:38 am IST · valid to 27 Mar 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 contactWithdrawn

Updates to family contact withdrawn 26 Oct, 3:35 am IST

event c756bfaa…4df8
  • SMS and WhatsApp gateway· stop and eraseacknowledged 26 Oct, 3:39 am
  • Nominated family contact removed from update lists

Who, and how sure

Patient
Bhavya S*** · KSV-HYD-20172
Identity
L2 Mobile OTP + staff witness
Factors
mobile otp: checked by serverstaff witness: staff witnessed
Capture
ceremony · assisted · kiosk
Co-signer
Nikhil Sharma (sibling)
Teach-back
understood · 0.87 · live model · answer hash ef934f9b94a7

What was shown, and the seal

Notice
notice.ipd_admission v2026-09.1 · తెలుగు
Notice hash
dc9335ec779c43839810b25d0f8348b781969aa325ec1ac07fe4a6119f1c1039
Receipt hash
57285acf5c026d17818ddfe04872c6ee4af5a86a39fddc596abfcffb49bcde8d
Signature
05La-WVcjIx6XsKxRUftSqQVgbou3BKkcQIOm0uCEMWodGvJrd-nbkAEvcgXC3VlCKyunSlKzQa8jx18t0wsBw
Algorithm and key
Ed25519 · ksv-47c7d4987f3a

Audit chain entries

  1. #211 receipt issued · 28 Sep, 9:38 amb6ff119330397df0
  2. #489 withdrawal recorded · 26 Oct, 3:35 amc6f3dd29e1bf2528
  3. #490 processor acknowledged · 26 Oct, 3:39 am4465e86355fc94ad

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

FHIR endpoint