Each card has a role.
The transaction card carries the PSBT. Cryptogram cards hold your encrypted secret. Signing takes place on the device after your review.
Available
CUVEX / C1-V01BM-23
Cuvex Original
The essence of self-custody.
Sign Bitcoin offline, protect your seed phrase and organise your encrypted backups. An NFC card system that keeps preparation and signing separate. Includes 12 NTAG216 NFC cards with the Cuvex logo, one Faraday device pouch and four Faraday card pouches.
- ✓ Sign Bitcoin with Double AirGap PSBT
- ✓ Cryptograms on passive NFC cards
- ✓ Seed generation with physical entropy
- ✓ Watch-Only app with Coin Control
- ✓ 12 NTAG216 cards with the Cuvex logo
- ✓ 1 Faraday device pouch + 4 card pouches
229.00 USDFinal price. Taxes, shipping and customs duties included.
Reference price in USD.
≈ 0.00323511 BTC≈ 229.057265 USDC
USDC is not currently available as a payment method.
Your seed need not be exposed.
Keep encrypted backups and distribute them across locations. Reading the secret requires the passwords and decryption conditions you have set.
Start at the source.
The set of four dice lets you take part in creating the seed using the Dice & Coin procedure. You can also encrypt the seed of an existing wallet.
What you receive.
Your device. A more complete backup plan.
1 × Cuvex Original · C1-V01BM-23
- 8K transaction card
- Set of 4 coloured dice
1 Faraday device pouch
DFB-PU02-23
4 Faraday card pouches
CFB-PU01-23
2 packs of 6 NTAG216 NFC cards with the Cuvex logo: 12 cards in total
CP-6NFC-23
Final price in USD. Taxes, shipping and customs duties included.
The photographs show the components. The contents and quantities included in the pack are those listed on this page.
CUVEX DESKTOP + MIRROR
Desktop and Mirror compatibility
Cuvex BIT connects directly to Cuvex Desktop over USB-C. To fully operate Cuvex Original with Desktop, you need Cuvex Mirror on a compatible NFC smartphone, linked to your computer over Bluetooth. Mirror reads and writes NFC cards; sensitive operations are reviewed and authorized on your Cuvex device.
Cuvex BIT connects directly to Cuvex Desktop over USB-C. To fully operate Cuvex Original with Desktop, you need Cuvex Mirror on a compatible NFC smartphone, linked to your computer over Bluetooth. Mirror reads and writes NFC cards; sensitive operations are reviewed and authorized on your Cuvex device.
Cuvex Desktop
Cuvex Desk brings your tools together on Windows, macOS and Linux. In normal use, you review and authorize sensitive operations on your Cuvex. Mirror supplies your phone’s NFC; local decryption is reserved for emergencies.
Windows · macOS · Linux
Explore the apps →Cuvex Mirror
Cuvex Mirror uses your compatible smartphone’s NFC to read and write cards for Cuvex Desktop through an encrypted Bluetooth connection. It is required to fully operate Cuvex Original with Desktop. Mirror does not decrypt your secrets or replace authorization on the hardware.
What do I need to use Cuvex Mirror?
You need Android 8 or later with NFC, a camera and Bluetooth peripheral mode, plus a computer with compatible Bluetooth and Cuvex Desk. A temporary PIN and QR bind the session. Mirror needs no account or Internet permission and does not decrypt your secrets.
Compatibility
You need the Cuvex app and an NFC-compatible smartphone. The device's USB-C port is used for power. Bluetooth is reserved for firmware updates.
Bluetooth is used only in the bootloader to install signed firmware; it is not active during encryption, decryption or signing operations. The decrypted secret is not persistently stored on the device.
The included NTAG216 cards support compatible non-biometric cryptograms that require all participants. Cuvex Original reads them directly; Cuvex BIT uses NFC on a compatible smartphone. X-of-6 threshold schemes require 8K cards. NTAG216 cards do not replace the 8K transaction card used by Cuvex Original.
Distribute your encrypted backups across separate locations and check that you can recover them. Faraday pouches add a radio-frequency barrier when properly closed; effectiveness depends on the closure, frequency and condition of the pouch. They do not replace encryption or a recovery plan.
Device assembled in Spain. Accessories manufactured in China.
Manufacturer, safety and support
Tidy Money LLC · Business ID 7711034
1209 Mountain Road PL NE STE R
Albuquerque, NM 87110
Bernalillo County (USA)
Contact: sato@cuvex.io
Responsable en la UE: CR.
Never enter your seed or private keys in the store or support.
Soporte de seguridad anunciado hasta 30/10/2026, sin perjuicio de los derechos y obligaciones legales.
SKU: C1-V01BM-23. Never enter your seed or private keys in the store or support.
Safe use and limits →ORIGINAL 1.2.1 · BIT 1.2.2
What they share. What you should know.
Choose Original for NFC cards read and written directly by the device. USB-C provides power; Bluetooth is reserved for firmware updates. No biometrics.
What does AES-256-GCM add?
New cryptograms use AES-256-GCM authenticated encryption, checking the protected content and authentication tag. This does not mean that all metadata or every older copy has this protection.
Is cryptogram multisignature the same as Bitcoin multisig?
No. Protect decryption with up to six participants, requiring everyone or a threshold such as 2 of 3. This policy controls access to the secret; it does not turn a wallet into a Bitcoin multisig wallet.
Which transactions can these versions sign?
Both devices process BIP174 v0 PSBTs with P2WPKH inputs and SIGHASH_ALL. They review recipients, amounts, change and fees; approval is bound to that transaction and the signature is verified. Displaying Taproot Bech32m recipients does not mean signing Taproot inputs. Private keys are not exported for signing.
What happens after incorrect passwords?
Three attempts trigger a five-minute pause that persists after power loss. This limits attempts on the device, not offline attacks on an exported copy. Use strong credentials and protect your backups.
What does Reinforce Cryptogram do?
After decrypting a compatible older unauthenticated copy, create a reinforced version while retaining the secret, credentials and participant policy. Original saves it to NFC; BIT returns it over USB-C and retains biometric templates where applicable. Verify the new copy before retiring the old one.
How do dice and a coin create a wallet?
The guided flow produces a 24-word BIP39 seed using the 2048-word dictionary. Follow the device’s rolls and checks. The menu language does not determine the seed dictionary language.
Can I move any cryptogram between devices?
No Cuvex cryptogram is tied to a particular device. You can decrypt it on any compatible Cuvex device, provided you retain the cryptogram and its required credentials. Cryptograms protected with biometrics can only be decrypted on Cuvex BIT.
How do I connect my Cuvex to Desktop?
Cuvex BIT connects directly to Cuvex Desktop over USB-C. To fully operate Cuvex Original with Desktop, you need Cuvex Mirror on a compatible NFC smartphone, linked to your computer over Bluetooth. Mirror reads and writes NFC cards; sensitive operations are reviewed and authorized on your Cuvex device.