PERSONAL HSM
FOR SOVEREIGN SELF-CUSTODY
Cuvex is a fully offline signing and encryption device that protects your seed phrase and signs PSBT transactions with no servers, no telemetry, and no metadata leakage.
CUVEX SOLVES THE REAL
COMPLEXITY OF SELF CUSTODY
It eliminates paper or steel backups, avoids server-connected suites, and gives you full control over your keys, your balance, and your privacy.
Designed for those who understand that security is not just about protecting keys, but about preventing data correlation.
Compatible with any wallet on the market
Patented technology
Seamless user experience
Seed generation using physical entropy (dice & coin)
Doble AirGap PSBT
CUVEX HSM HIGHLIGHTS
No backend, no balance auditing
Compatible with Ledger, Trezor, Coldcard, Jade, and any existing wallet that provides access to your recovery seed phrase.
Offline AES-256-GCM encryption
on NFC cards
The real weakness of your Bitcoin isn’t in the blockchain, it’s in how you store your seed phrase.
WHY CUVEX EXISTS
The Problem with Today’s Self-Custody
Most hardware wallets on the market rely on:
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Desktop or mobile software
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Centralized backends
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Balance and transaction synchronization
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Usage pattern correlation
This does not directly compromise your private keys,
but it does compromise your financial privacy, creating:
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Single points of correlation
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Data leakage risk
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Structural dependence on third parties
Cuvex was created to solve that problem, not to replicate the same model with a different device.
CUVEX DESIGN PRINCIPLES
Our security model is deliberately more strict:
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Zero backend
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Zero correlation
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Zero telemetry
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Zero third-party dependency
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Mandatory human verification
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Signing is a conscious act, not an automated one
These are not marketing decisions. They are architectural decisions aligned with a clear and explicit threat model.
HOW CUVEX WORKS
1. Memory That Never Stores Data
The device memory is automatically wiped at the end of each process, on reboot, or when the USB-C cable is disconnected.
No private keys or sensitive data are stored locally.
2. Fully Offline Seed Phrase Encryption
Seed phrases are encrypted using AES-256-GCM entirely offline.
The secret never crosses an internet-connected interface, smartphone, or PC while it resides within the device’s processor.
3. Dual PSBT Air Gap (Unique in the Market)
While other devices implement a single isolation layer, Cuvex separates transaction preparation and signing into two independent air gaps:
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Transaction preparation in the watch-only app
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Reading the unsigned PSBT on the device
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Signing using the encrypted seed cryptogram (via NFC or USB-C)
This radically reduces any potential attack vector for key or metadata leakage.
4. True Physical Entropy
Cuvex enables Bitcoin wallet generation using manual entropy (dice & coin), eliminating reliance on opaque pseudo-random number generators and reinforcing sovereignty at the very origin of the key.
PRIVACY
BY DESIGN
Cuvex
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No account required
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No data collection
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No server queries
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No centralized balances or XPUBs
The watch-only app can operate with:
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Your own node
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Endpoints you choose
This eliminates, by design, the metadata leakage that other models introduce structurally.
THREATS
CUVEX MITIGATES
Common Risks in Hardware Wallets
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Personal data leakage through management software
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Balance correlation with identity or IP address
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A single operational point of failure
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Software-generated seeds with questionable entropy
How Cuvex Mitigates Them
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No backend and no login
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Dual PSBT Air Gap
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Protected volatile memory
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Seed generation using physical entropy
COMPARISON WITH
TRADITIONAL HARDWARE WALLETS
