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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 · Lakshmamma R***

Kestrova Kukatpally · issued 25 Oct 2026, 9:30 am IST · valid to 23 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 sharingRefused
  • Updates to family contact Granted

Who, and how sure

Patient
Lakshmamma R*** · KSV-HYD-10002
Identity
L2 Mobile OTP + staff witness
Factors
mobile otp: checked by serverstaff witness: staff witnessed
Capture
ceremony · assisted · kiosk
Co-signer
Ravi Reddy (son)
Teach-back
understood · 0.84 · live model · answer hash 38c5a9c2fadc

What was shown, and the seal

Notice
notice.ipd_admission v2026-09.1 · తెలుగు
Notice hash
dc9335ec779c43839810b25d0f8348b781969aa325ec1ac07fe4a6119f1c1039
Receipt hash
013b2279edb747524f5612991cbf13734e05117f3d55de7b8892468b7a5955c2
Signature
YZf6eeZpjXMdtF2HRrqhu_X9Ursc-95huk-SDxhD4_caLl7WN1S3283z_K6rtXvkPU3O-a2T8gP__B7tl3dWBw
Algorithm and key
Ed25519 · ksv-47c7d4987f3a

Audit chain entries

  1. #478 receipt issued · 25 Oct, 9:30 am05fe175a3ffbde02

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

FHIR endpoint