Synthetic tenant: Kestrova Health (fictional), 444 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 · Rahul J***
Kestrova Secunderabad · issued 11 Oct 2026, 4:51 pm IST · valid to 11 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 contactRefused
- Appointment and refill remindersRefused
- Health tips and seasonal alertsWithdrawn
- Partner offers (insurance, pharmacy)Refused
Health tips and seasonal alerts withdrawn 14 Oct, 2:00 pm IST
event f36e5bfc…86bd- SMS and WhatsApp gateway· stop and eraseacknowledged 14 Oct, 2:02 pm
- Patient-engagement CRM· stop and eraseacknowledged 16 Oct, 1:35 am
- Removed from every campaign audience and suppression list updated
Who, and how sure
- Patient
- Rahul J*** · KSV-HYD-20214
- Identity
- L1 Mobile OTP
- Factors
- mobile otp: checked by server
- Capture
- quick · self-serve · kiosk
- Copy arm
- generic
What was shown, and the seal
- Notice
- notice.opd_visit v2026-09.1 · हिन्दी
- Notice hash
- bf0deddfb254022e83f81b0282b6e7406e9ec7f032687a652e6115aa01dac795
- Receipt hash
- c8f00bf9e53d1a833339cf5ab3ce1e177fc5cef1c52e8e4e2a3ce8e2bbdf2e84
- Signature
- SmDYlVvI_A9skwsjCvhd-7b_ybWK4q0Rk36EledjJ0IyySgqL6i3F2qZghYOY26OQjnx8c3XtiiyJKO2x1l2CQ
- Algorithm and key
- Ed25519 · ksv-47c7d4987f3a
Audit chain entries
- #331 receipt issued · 11 Oct, 4:51 pm32ed9cbfade6166e
- #358 withdrawal recorded · 14 Oct, 2:00 pm2556e7442933b9a1
- #359 processor acknowledged · 14 Oct, 2:02 pma0ffcb732f901134
- #371 processor acknowledged · 16 Oct, 1:35 am1d8fb2a83290681b
Each entry hashes the previous one, so removing or editing an entry breaks every entry after it.