Yes. Cryptnox can hold UMA as the UMA ERC-20 token on Ethereum after you add the token once through Add a Network or Add a Token. UMA is not pre-programmed on the card. Use contract 0x04fa0d235c4abf4bcf4787af4cf447de572ef828 and receive to a 0x-prefixed 20-byte EVM address. The Ethereum private key for that UMA address is created inside the card’s secure element and does not leave it.
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UMA on the Cryptnox Crypto Hardware Wallet – Dual-Card Set is held as an ERC-20 token on Ethereum. The address you use for receiving UMA is therefore an Ethereum-style address: a 0x-prefixed 20-byte EVM address. The token contract to add is 0x04fa0d235c4abf4bcf4787af4cf447de572ef828.
That contract-and-network pairing matters because the ticker alone is not enough when you are preparing a transfer. For UMA in this setup, the network is Ethereum, the token standard is ERC-20, and the receiving address must be the 0x address controlled by your Cryptnox wallet.
Before adding UMA, you can compare the asset route against the Cryptnox coin and blockchain support page, then use the Ethereum ERC-20 details above when configuring the token.
UMA is not already enabled on the Cryptnox card when the Dual-Card Set arrives. After the wallet is initialised, add UMA once through Add a Network or Add a Token, using Ethereum as the network and the UMA ERC-20 contract as the token identifier.
The setup flow should keep the UMA route tied to Ethereum. If a service asks for a network, choose Ethereum. If a wallet interface asks for a token contract, use 0x04fa0d235c4abf4bcf4787af4cf447de572ef828. If it asks for a receiving address, use the 0x address shown for the wallet you initialised with the Cryptnox cards.
If you want the product setup flow beside you while adding UMA, the Cryptnox hardware wallet tutorials are the practical reference to use before moving tokens to the newly configured 0x address.
Holding UMA as an ERC-20 token means the token balance is associated with an Ethereum address. Control of that UMA balance depends on control of the private key for the 0x address receiving the token. With Cryptnox, that key is generated inside the secure element and remains there, so the phone and ordinary app storage do not become the place where the Ethereum signing key is kept.
For the UMA Ethereum address, the card’s secure element uses an EAL6+-certified chip. EAL6+ applies to the chip platform. The buyer-facing result is that the Ethereum key controlling the UMA ERC-20 address is created and retained inside the secure element used by the card.
The Cryptnox app on iOS and Android provides the interface for using the card. When unlock uses a face or fingerprint check, that check is performed by the phone through the Cryptnox app; the card itself does not have a face or fingerprint sensor. The UMA custody boundary remains the secure element that holds the Ethereum key.
This distinction is important for UMA because the token does not have a separate UMA-only address format in this setup. The 0x Ethereum address is the account to protect, and the card is the place where the key for that account is generated and kept.
The Dual-Card Set arrives uninitialised. During setup, the seed is generated inside both secure elements, which makes the second card the backup for the same wallet from the start. For UMA, that means both cards are aligned to the Ethereum account whose 0x address can hold the UMA ERC-20 token.
This backup model avoids making a handwritten recovery phrase the default setup for a new UMA wallet. The second card is the backup created during initialisation, so the buyer can prepare the card set before sending UMA to the Ethereum address.
Importing a 12- or 24-word BIP39 phrase is available as an advanced option, but it is not the normal starting point for a new Dual-Card Set. For a fresh UMA setup, initialise the cards first, add the UMA ERC-20 token route, and only then receive UMA to the displayed Ethereum address.
The Cryptnox app is free on iOS and Android, and it is the app you use when working with the card. For UMA, the app is used around an Ethereum ERC-20 setup: initialise the cards, add the UMA token contract, and use the 0x address shown for the wallet.
For Web3 connections, Cryptnox connects through WalletConnect and works with MetaMask. That is relevant to UMA because ERC-20 token actions commonly begin from an Ethereum address and a Web3 wallet connection. The UMA token route still needs to be added; it does not arrive pre-programmed on the card.
The card is both a contact and NFC smart card, so a UMA holder is not limited to only tapping by phone. The same Ethereum address logic applies whichever interface is used to reach the card.
UMA fits the Ethereum ERC-20 pattern: a token contract identifies the asset, while the 0x Ethereum address identifies where the balance is held. Buyers who are also looking at EVM-style holdings may want to compare UMA with the Polygon hardware wallet page, where the address format is also EVM-based but the network route is not the same as UMA on Ethereum.
Not every asset route looks like UMA. The TRON hardware wallet page is useful when comparing a non-Ethereum address route against UMA’s Ethereum ERC-20 setup. The distinction helps prevent treating a ticker, a network name, and a receiving address as interchangeable.
For buyers comparing broader custody choices, the Cryptnox hardware wallet collection shows the product family context, while the Cryptnox Crypto Hardware Wallet – Dual-Card Set is the specific two-card product used for the UMA setup described here.
If you hold assets outside the Ethereum ERC-20 pattern, the Bitcoin hardware wallet page and the Ronin hardware wallet page are better comparisons than assuming every asset behaves like UMA on Ethereum.
Before sending UMA to a newly initialised Cryptnox wallet, match the network, token contract, and address format. The network should be Ethereum. The token standard should be ERC-20. The UMA contract should be 0x04fa0d235c4abf4bcf4787af4cf447de572ef828. The receiving address should begin with 0x.
The official UMA documentation is the primary resource for UMA protocol information, while CoinGecko’s UMA page lists the UMA token contract as 0x04fa0d235c4abf4bcf4787af4cf447de572ef828. Use the same contract when adding UMA to the Cryptnox app.
After those checks, the UMA balance belongs to the Ethereum address controlled by the card-generated key. The second card remains the backup for that same wallet, so the backup plan is in place before the token balance is moved.
No. UMA is not pre-programmed on the card. After initialising the Dual-Card Set, add UMA once through Add a Network or Add a Token. Use Ethereum as the network, ERC-20 as the token standard, and contract 0x04fa0d235c4abf4bcf4787af4cf447de572ef828.
Use the 0x-prefixed 20-byte EVM address shown for your Cryptnox wallet. UMA in this setup is an ERC-20 token on Ethereum, so the receiving address is an Ethereum address. The UMA token contract identifies the token balance associated with that address.
Add UMA with the Ethereum ERC-20 contract 0x04fa0d235c4abf4bcf4787af4cf447de572ef828. The network, contract, and receiving address should be checked together before a transfer: Ethereum network, UMA ERC-20 contract, and the Cryptnox wallet’s 0x address.
The Dual-Card Set ships uninitialised. During setup, the seed is generated inside both secure elements, so the second card becomes the backup for the same wallet. For UMA, that backup covers the same Ethereum 0x address that can hold the ERC-20 token.
No. The default Dual-Card Set setup uses the second card as the backup because the seed is generated inside both secure elements during initialisation. Importing a 12- or 24-word BIP39 phrase is an advanced option, not the normal setup path for a new UMA wallet.
Yes. The Cryptnox app connects to Web3 through WalletConnect and works with MetaMask. UMA still needs to be added as an Ethereum ERC-20 token first, using contract 0x04fa0d235c4abf4bcf4787af4cf447de572ef828 and the 0x address from your Cryptnox wallet.
No. When unlock uses face or fingerprint checking, that check happens on the phone through the Cryptnox app. The card itself has no face or fingerprint sensor. For UMA, the Ethereum private key remains inside the card’s secure element.
No, and on this network that is not a limitation. The Cryptnox wallet uses one address per chain. HD address rotation comes from Bitcoin’s UTXO model and the BIP32/BIP44/BIP49/BIP84 derivation scheme; on account-model networks each account is a single fixed address by design, so the question does not apply in the same way. Cryptnox’s single-address-per-chain behaviour matches how these networks work.
At the cryptography layer the card derives keys along BIP32 and SLIP-10 paths, one path per supported chain, though that is not exposed in the app as multi-address management.
Yes. Cryptnox ships worldwide from the official CRYPTNOX store. Orders to Switzerland, the European Union and the United States are dispatched from stock already held in each of those regions, so the parcel does not cross a customs border into your country and there are no import duties to pay. Orders to other destinations are shipped internationally, and any import duties or local taxes are set by the destination country and are the recipient’s responsibility. Current shipping rates are shown at checkout.
