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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 · Kavya C***

Kestrova Gachibowli · issued 29 Sep 2026, 8:52 pm IST · valid to 28 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 contact Granted

Who, and how sure

Patient
Kavya C*** · KSV-HYD-20443
Identity
L3 Voice match + OTP
Factors
voice match: simulated in demomobile otp: checked by server
Capture
ceremony · self-serve · kiosk
Teach-back
partial · 0.78 · live model · answer hash 4da30829f49f

What was shown, and the seal

Notice
notice.ipd_admission v2026-09.1 · हिन्दी
Notice hash
9b8b399be413d139fb3b5fb4984ba6a82873621d217f7264b307e101704c325f
Receipt hash
41ecead680df1e525e860c15c62f90f0782896e6b1bae30e0874b0c60821987d
Signature
RqaOl4wzbdbUjd2RubmA2__Y9ZjvT2LrsiX5Kv57G_wOo4GlktwqHJkktkQlAx4FNRAKCFGH5kWY5VvCWpgOCQ
Algorithm and key
Ed25519 · ksv-47c7d4987f3a

Audit chain entries

  1. #226 receipt issued · 29 Sep, 8:52 pm1520f65b6596b3e2

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

FHIR endpoint