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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 · Ravi K***

Kestrova Gachibowli · issued 27 Sep 2026, 10:41 am IST · valid to 26 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 sharingRefused
  • Updates to family contactRefused

Who, and how sure

Patient
Ravi K*** · KSV-HYD-20023
Identity
L2 Mobile OTP + staff witness
Factors
mobile otp: checked by serverstaff witness: staff witnessed
Capture
ceremony · assisted · kiosk
Teach-back
understood · 0.93 · rubric · answer hash b6f4c7ce4580

What was shown, and the seal

Notice
notice.ipd_admission v2026-09.1 · English
Notice hash
184343f127d606bac817839ad706047b3e836af926c539bb81fa4c2661c253bf
Receipt hash
f6610e0f9b87c7b6e792144f75fc11b9975c520dabd9cdbb28e590b5ad1b29ca
Signature
W0g9I8Cc8nQa8q7otmk_r3tfZVqnQQZ8dUAJ3yDXKTNfNSX_yHKrwFSUejpsrnY1JeoVQkR8ifXere3_30r3CA
Algorithm and key
Ed25519 · ksv-47c7d4987f3a

Audit chain entries

  1. #206 receipt issued · 27 Sep, 10:41 ameb96acd7bfdccca9

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

FHIR endpoint