Synthetic tenant: Kestrova Health (fictional), 442 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 · Priya S***
Kestrova Gachibowli · issued 15 Nov 2025, 11:00 am IST · valid to 15 Nov 2026 · 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 reminders Granted
- Health tips and seasonal alertsWithdrawn
- Partner offers (insurance, pharmacy)Refused
Health tips and seasonal alerts withdrawn 23 Jul, 2:30 pm IST
event cd2a6703…d887- SMS and WhatsApp gateway· stop and eraseacknowledged 23 Jul, 2:32 pm
- Patient-engagement CRM· stop and eraseacknowledged 24 Jul, 11:44 pm
- Removed from every campaign audience and suppression list updated
Who, and how sure
- Patient
- Priya S*** · KSV-HYD-10001
- 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 v2026-06.2 · English
- Notice hash
- 65f7906774526b4280c00866548040b75b77aafc81e8736306f9b4100269fefa
- Receipt hash
- 14460dd88e8f8d48d7910e256f6bd654bc0febea325c47a4da39b374b97c001e
- Signature
- 9MicedtlfxuD8LH8ieBmnIj4L3L0ka18abGJOUWLVb8EeqCdFI2owfgd1kuB2ifKw7L78KFJh4I80fWwSLtaCA
- Algorithm and key
- Ed25519 · ksv-47c7d4987f3a
Audit chain entries
- #2 receipt issued · 15 Nov, 11:00 amb9435b499fc8af7b
- #9 withdrawal recorded · 23 Jul, 2:30 pm093555ace22be62c
- #10 processor acknowledged · 23 Jul, 2:32 pmeb753a4d59f42783
- #11 processor acknowledged · 24 Jul, 11:44 pm53c48becb87b0172
Each entry hashes the previous one, so removing or editing an entry breaks every entry after it.