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 · Vijaya M***
Kestrova Kukatpally · issued 26 Oct 2026, 8:06 am IST · valid to 26 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 contact Granted
- Appointment and refill reminders Granted
- Health tips and seasonal alertsWithdrawn
- Partner offers (insurance, pharmacy)Withdrawn
Health tips and seasonal alerts withdrawn 30 Oct, 4:40 am IST
event 589f396c…962b- SMS and WhatsApp gateway· stop and eraseacknowledged 30 Oct, 4:44 am
- Patient-engagement CRM· stop and eraseawaiting acknowledgement, expected in 11 hours
- Removed from every campaign audience and suppression list updated
Partner offers (insurance, pharmacy) withdrawn 29 Oct, 3:32 pm IST
event 8ba35460…c4fa- Patient-engagement CRM· stop and eraseacknowledged 30 Oct, 10:26 pm
- Partner-offers network· stop and eraseawaiting acknowledgement, expected in 1 day
- Removed from every campaign audience and suppression list updated
Who, and how sure
- Patient
- Vijaya M*** · KSV-HYD-20225
- 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 · தமிழ்
- Notice hash
- 779d591dadb4a8882f6e18bc74f9f95827047549729ba775781c60ca14806c2f
- Receipt hash
- 0f49e9ddb46c06fc52ac87a91bd128d792249def3d2e67bc0c6915376476c178
- Signature
- 80h0MruWEhq3H6-SeIx7Yh6fOZm9gtwzh9-x849eXXEQD4Ic2KqeRXHHu05MJHUfu1KzykZxNB9wdWmnqVCgAw
- Algorithm and key
- Ed25519 · ksv-47c7d4987f3a
Audit chain entries
- #491 receipt issued · 26 Oct, 8:06 am4647c2ea10a78f4c
- #535 withdrawal recorded · 29 Oct, 3:32 pm3d258a516dcf1daa
- #544 withdrawal recorded · 30 Oct, 4:40 am753bb764d3f00e8b
- #545 processor acknowledged · 30 Oct, 4:44 amc5bddbe1fcf398f6
- #559 processor acknowledged · 30 Oct, 10:26 pm5e708dd97f634d72
Each entry hashes the previous one, so removing or editing an entry breaks every entry after it.