High-net-worth principals, founders, and self-custody holders expect counsel to govern digital continuity—yet storing client seed phrases, master passwords, or unencrypted USB drives inside firm DMS servers creates severe cyber-insurance and malpractice risk. ZeroCanary solves the fiduciary paradox mathematically.
| Fiduciary Dimension | Sealed Paper Envelopes / Firm DMS Storage | ZeroCanary Envelope v3 Split Custody |
|---|---|---|
| Insider & Breach Liability | High—whoever opens the safe or compromises DMS storage obtains immediate live access to client funds. | Eliminated—the firm’s Recipient Password is mathematically insufficient until the autonomous countdown expires. |
| Stale Credentials | Clients rotate hardware wallets and passphrases without scheduling a new notary appointment; wills hold obsolete keys. | Two-way encrypted updates allow clients to refresh instructions remotely with their Main Password while keeping the same Deposit ID. |
| 20-Year Probate Longevity | USB flash memory bit-rots; SaaS startups shut down or cancel unpaid subscriptions. | Zero-dependency standalone .html Offline Recovery Kit decrypts locally in any browser via file:///. |
| Practice Economics | Unbillable administrative hazard for partners. | High-value annual Digital Continuity Review service built on a single $490 flat practice retainer. |
During estate or corporate onboarding, the client seals their recovery directives and multi-file attachments (≤50 MB) inside their own browser using your practice’s Counsel Pass code—setting a separate Owner Main Password, Emergency Duress Password, and Recipient Unlock Password.
One click prints the formal Safe / Notary Handover Certificate containing the Deposit ID (zc-...), SHA-256 commitment, and a physical ink-only box where the Recipient Unlock Password is written and sealed inside your physical vault alongside the will.
While the client confirms presence every 30, 90, or 365 days, zero plaintext can be unlocked. If the timer expires, your practice receives an HMAC-signed HTTPS webhook and combines the server time-lock share with the safe’s Recipient Password to guide lawful estate distribution.
zc-8f4a92c10e7b3d19https://zerocanary.com/?recover=zc-8f4a...e3b0c44298fc1c149afbf4c8996fb924...[ HANDWRITTEN IN INK — SEALED IN NOTARY SAFE ]Never. The client seals their deposit locally inside their own browser using W3C WebCrypto (AES-256-GCM + 600,000 PBKDF2-SHA256 iterations). Even when the firm stores the printed Fiduciary Handover Certificate and Recipient Unlock Password in the physical matter safe, Envelope v3 split-key custody mathematically prevents decryption until the client's Dead Man's Switch timer expires.
No. ZeroCanary operates without end-client accounts, email databases, or personal profiles. Under the $490 / 12-Month Counsel B2B Retainer, your practice receives an institutional Continuity Pass unlocking unlimited client deposits, multi-file encrypted attachments up to 50 MB, and formal B2B VAT invoicing via Stripe.
Counsel B2B deposits optionally support HTTPS webhook outcalls signed with HMAC-SHA256 (X-ZeroCanary-Signature). When a client's check-in deadline expires—or if an Emergency Duress event occurs—ZeroCanary dispatches a signed JSON notification containing zero plaintext so your practice can initiate formal probate or identity verification protocols.
Every deposit generates a zero-dependency standalone .html Offline Recovery Kit using native W3C WebCrypto. Stored on archival media alongside the physical will or trust deed, it decrypts locally on any air-gapped computer via file:/// without requiring internet connectivity or vendor servers.