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 · Nikhil R***
Kestrova Kukatpally · issued 24 Oct 2026, 3:10 pm IST · valid to 24 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 remindersWithdrawn
- Health tips and seasonal alerts Granted
- Partner offers (insurance, pharmacy)Refused
Appointment and refill reminders withdrawn 28 Oct, 6:08 am IST
event 236cf5c7…70bc- SMS and WhatsApp gateway· stop and eraseacknowledged 28 Oct, 6:11 am
- Patient-engagement CRM· stop and eraseacknowledged 29 Oct, 3:22 am
- Removed from every campaign audience and suppression list updated
Who, and how sure
- Patient
- Nikhil R*** · KSV-HYD-20222
- Identity
- L1 Mobile OTP
- Factors
- mobile otp: checked by server
- Capture
- quick · assisted · kiosk
- Copy arm
- value exchange
What was shown, and the seal
- Notice
- notice.opd_visit v2026-09.1 · తెలుగు
- Notice hash
- dd156082448e5c767746e3d559b53e35d5c540c86bb64adb15e773e59da67cf6
- Receipt hash
- c6fae401d9f951bfeea4722011f533f2e917d987b31eeb0a0700e3aaa9d5095c
- Signature
- HENcdypi94GHy4sUZ4tkO6eyIaIEbS9gRwU7uYAtBdhCii9qjfX4Iqihh0f8ceUu7rDj9-4WP1y9EvVtoiELDQ
- Algorithm and key
- Ed25519 · ksv-47c7d4987f3a
Audit chain entries
- #468 receipt issued · 24 Oct, 3:10 pm0ede2b61fda3db97
- #512 withdrawal recorded · 28 Oct, 6:08 amf9e1373d791293d5
- #513 processor acknowledged · 28 Oct, 6:11 ame0dbae5ef38e3be8
- #528 processor acknowledged · 29 Oct, 3:22 ama3b9b762b65fd5ee
Each entry hashes the previous one, so removing or editing an entry breaks every entry after it.