Yes. The Cryptnox Crypto Hardware Wallet – Dual-Card Set can hold Sky (SKY) as an ERC-20 token on Ethereum after you add it through Add a Network or Add a Token. SKY is not pre-programmed on the cards. It uses a 0x-prefixed 20-byte EVM address. Private keys are generated inside the secure element and never leave it, and the second card is the backup created during setup.
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Sky (SKY) is handled on Cryptnox through Ethereum as an ERC-20 token. That matters before you send funds because you are not looking for a separate Sky chain or a special Sky address format. You use the Ethereum route, then add SKY as the token you want to view and manage.
The Sky token documentation identifies SKY as an ERC-20 token on Ethereum. On Cryptnox, the address used for SKY is the same type of Ethereum account used for other ERC-20 holdings: a 0x-prefixed 20-byte EVM address controlled by private keys in the card’s secure element.
Sky is the current name for the asset formerly known as MKR. If you still encounter the older label, it may be technically holdable as an Ethereum token where that service still supports it, but the current canonical asset is SKY. Before sending funds, use the current SKY token details and the Ethereum address format rather than relying on an older asset label.
For buyers checking more than one asset before ordering, the Cryptnox coin and blockchain support page helps place SKY alongside other networks and token routes supported by the product family.
The Dual-Card Set ships uninitialised, so SKY will not appear as a ready-made balance on a new pair of cards. After you initialise the cards, add SKY through Add a Network or Add a Token. For this asset, the useful check is simple: the chain must be Ethereum and the token must be SKY on Ethereum.
A SKY holder should not create a different address style just because the asset has its own name. SKY is received to an Ethereum 0x address. The token view can be added after the Ethereum account is available, and that account is the one Web3 services will ask to connect when you interact through the Cryptnox app, WalletConnect, or MetaMask.
The Cryptnox hardware wallet tutorials are the right companion when preparing the app, pairing the smart cards, and connecting the wallet before adding an Ethereum token such as SKY.
This add-on step is important for SKY buyers because the product is not sold as a token-specific card. The cards protect the wallet material, while the app view is where you add the Ethereum token you want to handle.
SKY does not introduce a new address format on the Cryptnox wallet. The receiving address is an Ethereum-style 0x-prefixed 20-byte EVM address. That is the address format to copy, verify, and share when receiving SKY.
This distinction is important because a token name can make an asset feel separate from the chain that carries it. For SKY, the chain is Ethereum and the token standard is ERC-20. The Cryptnox card controls the Ethereum private keys for the address; SKY is the token held at that address.
Sky’s token governance upgrade material explains the transition to the current SKY token name, and the Sky upgrade key information is useful when verifying the naming and token context before moving assets.
If your holdings include assets that use other account models, keep SKY mentally tied to Ethereum first. The practical receiving rule is chain, standard, then address: Ethereum, ERC-20, 0x-prefixed 20-byte EVM address.
For SKY, the asset-specific risk is the same as other Ethereum token holdings: whoever controls the Ethereum private keys controls the address that can move the token. With the Cryptnox Crypto Hardware Wallet – Dual-Card Set, those private keys are generated inside the secure element and never leave it.
The card uses an EAL6+-certified chip. That statement applies to the chip platform. It matters for a SKY holder because the Ethereum key material for the 0x address is created and stored inside the secure element rather than being exported for normal phone storage.
When you approve a SKY transfer or connect an Ethereum account through a Web3 route, the card remains the signing device behind the address. The app can present the flow, and WalletConnect or MetaMask can provide the connection path, but the private keys stay in the secure element.
The Cryptnox card is a contact and NFC smart card. For a SKY transaction, you can tap the card to a phone through NFC or insert it into a compatible reader. That dual-interface form factor keeps the signing card separate from the phone while still letting the app guide the Ethereum token flow.
If you are ready to buy the set used for this SKY setup, the product is sold on the Cryptnox Crypto Hardware Wallet – Dual-Card Set product page.
The backup model is especially important for SKY because the token is tied to an Ethereum address, not to a token-only account. 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 Ethereum wallet material.
There is no recovery phrase to write down by default. The second smart card is the recovery route created during the same setup process as the main card. If your Ethereum address later holds SKY, the backup card is tied to that same wallet material.
Importing a BIP39 recovery phrase is available as an advanced option, but a new Dual-Card Set does not rely on that path by default. For a SKY buyer starting fresh, the intended default is to initialise the pair and use the second card as the backup.
This model fits SKY because the token does not need a separate backup rule. Protect the Ethereum wallet material, and you protect access to the Ethereum address that holds SKY.
The free Cryptnox app is available on iOS and Android. For SKY, the app is where the Ethereum route and token view come together with the physical card. After SKY is added as an ERC-20 token, the app can be used with the Ethereum account whose private keys are held in the secure element.
Cryptnox connects to Web3 through WalletConnect and works with MetaMask. That gives a SKY holder two common Ethereum connection paths without changing the asset route: SKY remains an ERC-20 token on Ethereum, and the account remains the same 0x address controlled by the card.
Unlocking uses the phone’s face or fingerprint check through the Cryptnox app. The card itself has no face or fingerprint sensor. For a SKY approval, the phone helps with the app unlock flow while the card continues to hold the private keys for the Ethereum address.
For a broader view of the card-based wallet family, the Cryptnox crypto hardware wallet hub helps buyers compare the same Dual-Card Set across different chains while keeping SKY’s route clear: Ethereum ERC-20, added once as a token.
SKY should be treated as an Ethereum ERC-20 token when used with Cryptnox. The safest way to think about it is by chain and address format first: Ethereum, ERC-20, 0x address. That keeps setup clear when you also hold assets that use different networks or account formats.
For example, Tron uses a different network route, so a buyer comparing assets should not treat the Cryptnox hardware wallet for Tron as a model for receiving SKY. Polygon is an EVM network, but it is still a different route from SKY on Ethereum; the Cryptnox hardware wallet for Polygon is useful when that network is the asset path being used.
The difference is even clearer with Bitcoin, where the address system and asset model are not ERC-20 based. A buyer who also stores BTC can use the Cryptnox Bitcoin hardware wallet page to separate that account model from SKY’s Ethereum token route. If your holdings include Ronin assets, the Cryptnox hardware wallet for Ronin covers another distinct network path.
Those comparisons are useful because the same product can be used across different asset routes, but the receiving details are not interchangeable. For SKY, stay with Ethereum, ERC-20, and a 0x-prefixed 20-byte EVM address.
No. The Dual-Card Set ships uninitialised, and SKY is not pre-programmed. After setup, add SKY through Add a Network or Add a Token. Use Ethereum as the chain, because SKY is handled as an ERC-20 token on Ethereum.
Use an Ethereum 0x-prefixed 20-byte EVM address. SKY is not received through a separate Sky-only address format on Cryptnox. Before sending, confirm that the token is SKY on Ethereum and that the receiving address begins with 0x.
The Ethereum private keys that control the SKY address are generated inside the secure element and never leave it. SKY is the ERC-20 token held at the Ethereum address, while the card protects the private keys that control that address.
During setup, the seed is generated inside both secure elements. The second card is therefore the backup for the same wallet material as the main card. In the default setup, there is no recovery phrase to write down.
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.
Importing a BIP39 recovery phrase is available as an advanced option. It is not the default setup for a new Dual-Card Set. A new buyer can initialise the two cards together so the second card acts as the backup.
No. Unlocking uses the phone’s face or fingerprint check through the Cryptnox app. The smart card itself has no face or fingerprint sensor. The private keys for the Ethereum address holding SKY remain inside the card’s secure element.
Yes. The free Cryptnox app on iOS and Android connects to Web3 through WalletConnect and works with MetaMask. SKY remains an Ethereum ERC-20 token, so use the Ethereum account associated with your 0x address.
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.
