Built in Canada · Powered by Radiant (RXD) Layer-1 UTXO Covenants

Tamper-Proof Email Seals & Cryptographic Asset Vaults.

Eliminate wire fraud, business email compromise (BEC), and single-point-of-failure key loss. Radiant Vault anchors zero-knowledge SHA-256 proofs and programmable dead-man's switches directly onto the Radiant blockchain — without your sensitive data ever leaving your device.

Try Interactive Proof Verifier

0 bytes: Plaintext uploaded
< 1¢: Cost per anchor
~2 s: Seal to ledger

mail.google.com · Compose

Re: Wire instructions — 1450 Maple Ave closing

Hawkesbury Law LLP <clerk@hawkesburylaw.com> · 9:41 AM

Sealed

Please find the final wiring instructions and the executed deed attached. Verify the seal below before releasing trust funds.

Final_Wire_Instructions.pdf

184 KB · SHA-256 committed

Verified Radiant Closing Seal

txid: 8f94c2…e91a
singleton: OP_PUSHINPUTREF
finality: 12 confirmations · verified

Hashed locally in the extension · no attachment bytes transmitted

Two flagship modules

One cryptographic substrate. Two very different risks, retired.

Radiant Vault separates the problem most firms feel every week — an intercepted wire instruction — from the one they plan for once — passing digital assets on without exposing a key.

Module A

Radiant Closing Seal

Real estate law firms · title companies · corporate finance · high-trust correspondence

Every outbound email and attachment carries a cryptographic fingerprint that the recipient can check in one click — before a single dollar moves.

Client-side SHA-256 hashing
Email bodies, wiring instructions and PDF attachments are hashed locally inside the Manifest V3 extension. Zero plaintext touches our servers or the blockchain.
Instant recipient verification
Recipients confirm in one click that wiring coordinates or legal PDFs match the exact fingerprint sealed by the sender — no account, no software to install.
Immutable audit trail
Every sealed communication produces a deterministic, court-admissible timestamp anchored on Radiant, with a downloadable certificate of integrity.

Module B

On-Chain Dead-Man’s & Inheritance Vaults

Long-term digital asset custody · estate planning · encrypted dead-man’s switch payloads

Seal encrypted blobs or key shards into a covenant that only a heartbeat can hold shut. Up to 12 MB per payload, on-chain or split off-chain.

Non-custodial UTXO covenants
Enforced natively at Layer 1 through Radiant’s OP_PUSHINPUTREF singleton contracts. No centralized escrow, no trusted third party, no admin key that can seize your vault.
Heartbeat check-ins & failover
Set a check-in interval that fits your practice. Miss it, and cryptographic access rights unlock automatically for the beneficiaries or executors you designated.
Practice-ready by design
Multi-seat domain verification, firm-branded seals, and exportable compliance logs — built for the way a law firm actually operates.

Try it live

Seal something here. Then try to break it.

This runs the same Web Crypto SHA-256 the extension uses — in your browser, on your machine. Type wire instructions or drop a file, then edit one character and watch the verdict flip.

100% local — zero bytes uploaded

Document or wire instructions

Read with FileReader — never uploaded.

SHA-256 fingerprint

—

Demonstration only: the anchor values are derived deterministically in your browser and are not Radiant transactions. Production seals are minted by the gas-station relay under the Closing Seal protocol.

How it works

Three steps between a document and certainty

No wallets to manage, no tokens to buy, nothing new for the recipient to trust. The proof lives where neither party can quietly rewrite it.

STEP 01
Local cryptographic fingerprint
The browser extension — or any local client — computes a deterministic SHA-256 hash of your email, PDF, or encrypted vault payload. The bytes never leave the machine.
crypto.subtle.digest("SHA-256", buffer)
STEP 02
Radiant UTXO singleton anchor
A minimal state-carrying UTXO commits that hash to the Radiant blockchain in seconds, for a fraction of a cent. The reference is bound to one outpoint forever.
OP_PUSHINPUTREFSINGLETON · CLSL commitment
STEP 03
Instant zero-trust verification
Anyone with the extension, or the verification link in the email, independently re-hashes the file they received and compares it with the public ledger. No account required.
GET /verify/<assetRef> · green or red, no grey

Security & compliance architecture

The guarantees, stated exactly

Radiant Vault is deliberately boring cryptography: standard hashes, standard curves, standard keys — assembled so that neither the vendor nor the network can substitute a document after the fact.

Zero-knowledge privacy

Plaintext emails and files never leave the user’s machine. Only SHA-256 digests, an email hash and a public key reach the network — a PIPEDA-friendly architecture for Canadian legal and financial practices.

No document storage · no plaintext logs

Layer-1 UTXO determinism

No EVM reentrancy surface, no proxy upgrades, no admin pause switch. Seals are settled by Radiant’s SHA-512/256 proof-of-work and induction-proven references.

OP_PUSHINPUTREFSINGLETON · consensus-enforced

Deterministic HD key derivation

Clean BIP39/BIP44 wallet architecture with a single, auditable derivation path per firm. Rotate the custodian key deliberately, with the fingerprint recorded in the audit export.

BIP39 mnemonic · BIP44 account isolation

Self-hostable & air-gap friendly

Run your own Radiant full node and gas-station relay inside the firm’s network, or use the radiantvault.ca managed relays. Verification itself never requires our infrastructure.

Docker Compose · no vendor lock-in

Transparent pricing

Priced per seat, not per document

Seals cost a fraction of a cent on-chain, so we do not meter them. Every plan includes verification for recipients — they never pay, and never install anything.

Individual / Professional

$19CAD / month

For the sole practitioner or broker who sends wiring instructions every week.

Unlimited email closing seals
Chrome extension access
1 personal dead-man’s vault
Downloadable proof certificates
Email support

Law Firm & Corporate Team

$149CAD / month

The default for firms with a trust account and more than one clerk sealing documents.

Multi-seat domain verification
Custom firm seal branding
Wire-instruction tamper alerts
Priority relay nodes
Compliance export logs (CSV / PDF)
Custodian key rotation with audit trail

Enterprise & Institutional

Customannual agreement

For institutions that need their own chain infrastructure and negotiated covenants.

Dedicated Radiant full-node infrastructure
Custom UTXO covenant rules
Signed SLA with response targets
Air-gapped / on-premise relay option
Guided migration and onboarding

Prices in Canadian dollars, excluding tax. On-chain fees are included in every plan; there are no per-seal charges and no minimum contract.

Ready when the next wire is

Seal your next closing in under two seconds.

Install the extension, or ask for a walkthrough with the engineers who built the covenants.