Yes. Cryptnox can hold osETH as an Ethereum ERC-20 token after you add the token once through an Add a Network or Add a Token flow. osETH is not pre-programmed on the card. Use the Ethereum token contract 0xf1C9acDc66974dFB6dEcB12aA385b9cD01190E38 and receive to an 0x-prefixed 20-byte EVM address. Private keys are generated inside the secure element and never leave it.
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The Cryptnox Crypto Hardware Wallet – Dual-Card Set can be used for osETH when osETH is added as an Ethereum ERC-20 token. The card does not ship with osETH already enabled, so the buyer setup step is to add the token once with the Ethereum contract address: 0xf1C9acDc66974dFB6dEcB12aA385b9cD01190E38. The same contract appears on Etherscan’s osETH token page.
osETH uses the Ethereum address model. The receiving address is an 0x-prefixed 20-byte EVM address, and that address is the account controlled by your Cryptnox card. Because osETH is an ERC-20 token on Ethereum, it is added as a token under Ethereum rather than as a separate native coin with a different address format.
If you are comparing osETH with other assets before choosing a wallet, the Cryptnox coin and blockchain support page is the practical place to check broader support routes. For osETH, the route is specific: add the Ethereum ERC-20 token by contract address and use an Ethereum address secured by the card.
When you use the Cryptnox Dual-Card Set for osETH, the card protects the Ethereum account that controls the token. The osETH balance is associated with your Ethereum address, while the private key for that address is generated inside the secure element and never leaves it. Signing is handled through the card and app workflow without exposing the private key to the phone or browser.
The chip platform used by the card includes an EAL6+-certified chip. That property applies to the chip and platform, not to a finished-card certification claim. For an osETH buyer, the important point is simpler: the private key controlling the Ethereum address is created and kept inside the secure element.
osETH is an ERC-20 token on Ethereum, so access depends on the Ethereum account that holds it. If that account controls osETH, the same private key controls signing for that address. Cryptnox keeps that key in the secure element while the app provides the interface for reviewing and approving actions.
The card itself has no fingerprint or face sensor. Unlock uses the phone’s biometrics through the Cryptnox app, while the card remains the secure smart card that holds the private key. This separation is useful for osETH holders who want the phone as the interface without making the phone the place where the private key is stored.
For buyers comparing wallet formats, the Cryptnox best crypto hardware wallet collection explains where the card-based product sits in the range. For osETH specifically, the deciding details are Ethereum ERC-20 support, the correct contract address, and key generation inside the secure element.
osETH is not pre-programmed on the Cryptnox card. After setup, add it once through an Add a Network or Add a Token flow, depending on the wallet interface you are using. For osETH on Ethereum, the contract address is the key identifier. Enter 0xf1C9acDc66974dFB6dEcB12aA385b9cD01190E38 when adding the token.
The free Cryptnox app is available on iOS and Android. It connects to Web3 through WalletConnect and works with MetaMask, so you can use Ethereum wallet flows while keeping the private key inside the secure element. When adding osETH, use Ethereum as the chain and osETH as the token on that chain.
The Cryptnox hardware wallet tutorials explain the product workflow for the card, app, and Web3 connection. StakeWise also lists osETH mainnet details in its mainnet documentation, which is useful when checking the asset and network before adding the token.
The Cryptnox Crypto Hardware Wallet – Dual-Card Set ships uninitialised. During setup, the seed is generated inside both secure elements, so the second card is the backup. There is no recovery phrase to write down by default. For an osETH holder, the backup is another smart card created as part of the same setup model.
This backup model matters for an Ethereum ERC-20 token such as osETH because control of the Ethereum address determines control of the token. If the address holding osETH is controlled by the card set, the backup card is part of the same key-protection plan. The second card is not a spare display device; it is the backup generated during setup.
The default backup route is useful for buyers who do not want osETH access to depend on a phrase copied during setup. The cards still need careful handling, but the default model is built around two secure elements. The product described here is the Cryptnox Crypto Hardware Wallet – Dual-Card Set.
The Cryptnox wallet is a contact and NFC smart card. You can tap it to a phone or insert it into a reader. This dual-interface format matters for osETH because the token is held on Ethereum, while daily interaction can happen through the Cryptnox app, WalletConnect, or a MetaMask workflow.
When you use the phone route, the Cryptnox app provides the card interaction and unlock uses the phone’s biometrics. The card has no fingerprint or face sensor. The phone helps you operate the app, while the card keeps the private key inside the secure element.
For osETH, the card format does not change the asset facts. osETH remains an Ethereum ERC-20 token with an 0x-prefixed address. What changes is the approval workflow: the card is present when the account signs, and the private key remains inside the secure element.
Many osETH users already think in Ethereum addresses and MetaMask. Cryptnox works with MetaMask and connects to Web3 through WalletConnect. For another EVM asset example, compare the Cryptnox page for Polygon hardware wallet support; for a different EVM network case, see Ronin hardware wallet support.
To receive osETH, use an Ethereum address controlled by your Cryptnox card. The address should be 0x-prefixed and follow the 20-byte EVM address format. Because osETH is an ERC-20 token, the token is added with its Ethereum contract address rather than with a separate native-chain address.
Before sending osETH to a newly prepared address, verify three details: the chain is Ethereum, the token is osETH, and the contract address is 0xf1C9acDc66974dFB6dEcB12aA385b9cD01190E38. This check is more precise than relying on a token name alone because the contract address is the specific identifier for osETH on Ethereum.
Once osETH has been added, control still depends on the private key secured by the card. Viewing token information and signing a transaction are different actions. Signing requires the account key, and that key is generated inside the secure element and never leaves it.
If you also hold assets on other chains, the setup details will not always match the osETH route. Tron hardware wallet support follows a different chain model, while Bitcoin hardware wallet support uses a different address family from Ethereum’s 0x-prefixed format.
The Cryptnox Dual-Card Set is a strong fit for a buyer who wants card-based control of an Ethereum address used for osETH. The important match is not that osETH is preloaded; it is not. The match is that osETH is an ERC-20 token on Ethereum, and Cryptnox can secure the Ethereum account after the token is added by contract address.
This setup suits someone who wants a contact and NFC smart card, values a second-card backup generated during setup, and wants private keys generated inside a secure element. It also suits a buyer who expects to use a phone often, because the card can be tapped to a phone with the free Cryptnox app on iOS or Android. Where a reader setup is preferred, the same card also has a contact interface.
The buying decision comes down to the exact asset route and the security model. For osETH, the asset route is Ethereum ERC-20 with contract 0xf1C9acDc66974dFB6dEcB12aA385b9cD01190E38. The security model is a Swiss-engineered dual-card smart wallet where private keys are created inside secure elements, the second card is the backup, and the app provides the mobile interface.
No. osETH is not pre-programmed on the card. Add it once as an Ethereum ERC-20 token using contract 0xf1C9acDc66974dFB6dEcB12aA385b9cD01190E38. After the token is added, use the Ethereum address controlled by your Cryptnox card.
Use Ethereum. osETH is held as an ERC-20 token on Ethereum, and the receiving address should be an 0x-prefixed 20-byte EVM address. Do not treat osETH as a separate native chain when adding the token.
The Ethereum ERC-20 contract address for osETH is 0xf1C9acDc66974dFB6dEcB12aA385b9cD01190E38. Use this address when adding the token, and verify that the chain is Ethereum before receiving osETH to an address controlled by your card.
The Dual-Card Set ships uninitialised. During setup, the seed is generated inside both secure elements, so the second card is the backup. There is no recovery phrase to write down by default, and importing an existing BIP39 recovery phrase is an advanced option.
No. The card has no fingerprint or face sensor. Unlock uses the phone’s biometrics through the Cryptnox app. The card remains the secure smart card that holds the private key inside its secure element.
Yes. The free Cryptnox app on iOS and Android connects to Web3 through WalletConnect and works with MetaMask. For osETH, add the Ethereum ERC-20 token by contract address, then use the Ethereum account controlled by your Cryptnox card.
Use an Ethereum address in the 0x-prefixed 20-byte EVM format. osETH is an ERC-20 token on Ethereum, so the token is associated with that Ethereum address after the token contract is added.
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.