Synthetic tenant: Kestrova Health (fictional), 443 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.
Consent receipt
OPD visit · Ishaan S***
Kestrova Secunderabad · issued 22 Oct 2026, 4:44 pm IST · valid to 22 Oct 2027 · v1
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
- Updates to family contactWithdrawn
- Appointment and refill remindersRefused
- Health tips and seasonal alertsRefused
- Partner offers (insurance, pharmacy) Granted
Updates to family contact withdrawn 27 Oct, 5:56 pm IST
event 57c07354…0e41- SMS and WhatsApp gateway· stop and eraseacknowledged 27 Oct, 6:00 pm
- Nominated family contact removed from update lists
Who, and how sure
- Patient
- Ishaan S*** · KSV-HYD-20232
- Identity
- L1 Mobile OTP
- Factors
- mobile otp: checked by server
- Capture
- quick · self-serve · kiosk
- Copy arm
- value exchange
What was shown, and the seal
- Notice
- notice.opd_visit v2026-09.1 · English
- Notice hash
- 1c6d00fabb9aeb72dc2fd4998b1d26a0732810fe415c8d1667b99a60f2742c99
- Receipt hash
- cde5d993c979a30c43549defe63a863fb1f421efdc15697a88a4318666571407
- Signature
- DF__9n9e2B89xeTx7qoPs6gfoC9TAPcpitGJRJnPXpTiDzHquzTz1-K4hpKCweid-MO0oD-CRqXbDW59oS-RAw
- Algorithm and key
- Ed25519 · ksv-47c7d4987f3a
Audit chain entries
- #447 receipt issued · 22 Oct, 4:44 pm4755e5d2055a69b2
- #506 withdrawal recorded · 27 Oct, 5:56 pmda21f28c859a259b
- #507 processor acknowledged · 27 Oct, 6:00 pme781f9cb7c43623a
Each entry hashes the previous one, so removing or editing an entry breaks every entry after it.