The Problem: No Scalable Way to Issue Hardware Wallets to Institutional Clients
Banks, fintechs, crypto exchanges, and asset managers face a fundamental operational challenge: how do you provide hardware-secured cryptocurrency custody to thousands of clients at scale? Traditional hardware wallets are designed for individual self-setup — each unit requires manual initialization, personal seed phrase generation, and user-managed backup This model is incompatible with institutional operations that require centralized provisioning, compliance controls, branded experiences, and the ability to replace lost devices without disrupting client access The gap between the security of cold storage and the operational needs of institutional crypto custody has remained unbridged
The Innovation: Card-Wallet-as-a-Service (C-WAAS) With Patented Seed Injection
Cryptnox’s patent covers a complete system for institutional issuance, management, and replacement of crypto card wallets — the technology powering the Card-Wallet-as-a-Service (C-WAAS) platform The system enables financial institutions to issue hardware-secured cryptocurrency wallets to their clients using the same operational workflow they currently use for traditional payment cards
At the core is a novel RSA-wrapped seed injection protocol When provisioning a new card, the card’s secure element chip internally generates an RSA keypair and produces a mini-certificate signed through the PKI trust chain (protected by Patents 4 and 6) The issuing institution encrypts the client’s seed material using this card-specific RSA public key and injects it through the encrypted channel The seed is decrypted and stored exclusively within the secure element — never accessible to the institution’s staff, systems, or network Once RSA wrapping is activated, the card permanently restricts all subsequent seed operations to this mechanism, cryptographically preventing downgrade attacks
On-Demand Card Replacement Without Seed Phrases
The system maintains encrypted copies of client seed material in institutional cold storage (HSM-protected) When a client’s crypto card is lost, stolen, or damaged, the institution provisions a new card using the same seed material through the RSA-wrapped injection process The replacement card gains access to the exact same blockchain addresses and assets as the original — no seed phrase handling, no client-side recovery procedures, no disruption to the client’s on-chain positions
This capability transforms the hardware wallet from a fragile, single-point-of-failure device into a replaceable credential backed by institutional infrastructure — the same model that has made traditional banking cards practical for billions of users worldwide
Enterprise Features: Policy Controls and Multi-Asset Support
The patented system extends beyond basic issuance to include configurable policy controls that institutions can set per card or per client: blockchain whitelists (restricting which networks the card can interact with), spending caps, address restrictions, and compliance rules The multi-currency hardware wallet architecture supports Bitcoin, Ethereum, and any blockchain compatible with secp256k1 or Ed25519 key derivation Cards can be white-labeled with institutional branding and, notably, can co-exist with EMV payment functionality — enabling a single card to serve as both a Visa/Mastercard payment card and a crypto hardware wallet
Why This Matters for the Future of Institutional Crypto
This patent positions Cryptnox as the only company with protected technology for institutional-grade crypto card issuance with on-demand replacement As regulated financial institutions increasingly enter the cryptocurrency market, the ability to issue hardware-secured wallets at scale — with compliance controls, branded experiences, and seamless replacement — becomes a critical competitive capability Cryptnox’s white label crypto wallet platform, protected by this patent, provides that capability today
