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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

Inpatient admission · Gayatri S***

Kestrova Secunderabad · issued 17 Sep 2026, 7:38 pm IST · valid to 16 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
Gayatri S*** · KSV-HYD-20296
Identity
L2 ABHA-linked mobile OTP
Factors
abha link: simulated in demomobile otp: checked by server
Capture
ceremony · self-serve · kiosk
Teach-back
understood · 0.82 · live model · answer hash f3e73a5b9a5f

What was shown, and the seal

Notice
notice.ipd_admission v2026-09.1 · हिन्दी
Notice hash
9b8b399be413d139fb3b5fb4984ba6a82873621d217f7264b307e101704c325f
Receipt hash
528c746d6d7a675e9f5246dbff1c3cd7b2cdddb9feb70ab20a64f75e3d1bb5e3
Signature
vqfvQ1m_2eWoXcEKTFmnIIp7bOL1p4foFR0Ey8YWJAA8CTFA_HklSjuJx6RFxChgaGP571Djlf5NmK3K9LR3AQ
Algorithm and key
Ed25519 · ksv-47c7d4987f3a

Audit chain entries

  1. #127 receipt issued · 17 Sep, 7:38 pm7c2a4534c02566c5

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

FHIR endpoint