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Data Fiduciary
Kestrova Health · Hyderabad cluster (fictional)
Overview

Synthetic tenant: Kestrova Health (fictional), 448 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

Video teleconsultation · Zoya N***

Kestrova Gachibowli · issued 11 Sep 2026, 6:57 pm IST · valid to 11 Sep 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
  • Share prescription with pharmacyneeded for the service Granted
  • Recording of consultationWithdrawn
  • Lab test referral Granted

Recording of consultation withdrawn 25 Oct, 4:09 am IST

event e74a1d43…247b
  • Teleconsult video platform· stop; record kept under legal holdacknowledged 25 Oct, 4:40 am
  • Encounter flagged in the HIS/EMR: no new processing for this purpose
  • Existing clinical record retained where law requires; erasure deferred, not denied
  • Recording access revoked for quality review

Who, and how sure

Patient
Zoya N*** · KSV-HYD-20217
Identity
L1 Signed-in app session
Factors
app login otp: simulated in demo
Capture
inline · self-serve · app

What was shown, and the seal

Notice
notice.teleconsult_video v2026-09.1 · English
Notice hash
81a18033e3fad7f2e2c8cd5d8e8dd84db69071fd3709d804f6b7993440c56ce6
Receipt hash
5d4225fc5557799b848f99256de37548b1120c9adf4447ebacb374d3076317be
Signature
ersW3YreAjG7ii3b0_iLQUfnuvgS5zvPo9vAD_OovSJCV_hy32BUfIXdK5AHvK7Q6XJXIRDrWhdCLaRhTpU7Ag
Algorithm and key
Ed25519 · ksv-47c7d4987f3a

Audit chain entries

  1. #79 receipt issued · 11 Sep, 6:57 pme6067f6ee8faf5ce
  2. #472 withdrawal recorded · 25 Oct, 4:09 am727d726c44946edb
  3. #473 processor acknowledged · 25 Oct, 4:40 ame8f3eb4ed5d6dc6b

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

FHIR endpoint