Tangem Wallet Pack of 2 - Secure Crypto Wallet - Trusted Cold Storage for Bitcoin, Ethereum, NFT's &

Tangem Wallet Pack of 2 - Secure Crypto Wallet - Trusted Cold Storage for Bitcoin, Ethereum, NFT's &
Key item features Ultimate Security: Generates a private key that remains on the card, safeguarding crypto and NFTs from hackers with EAL6+ certification and audited firmware. Versatile Compatibility: Manages over 13,000 tokens across 70+ blockchains, supporting DeFi, NFTs, and DeEx without wires, Bluetooth, or USB. Effortless Operation: Utilizes NFC for secure transactions via a mobile device and the Tangem app, enabling buying and selling crypto with various payment methods. Smart Backup: Features a second Tangem Wallet as a backup, eliminating the need for paper, pictures, or seed phrases for recovery. Durable Design: Boasts IP68 protection against environmental conditions, ensuring longevity and robust physical security. Comprehensive Support: Compatible with Bitcoin, Ethereum, Solana, XRP, USDT, and over 6,000 cryptocurrencies, integrating with dApps and WalletConnect.

LBANK

LBANK

Is it safe to use a private key for an existing singlesig wallet as one of the keys for a new multisig wallet?

I am new to hardware wallets and self-custody so apologies if I am mixing things up or trying to do something wrong here.

I got a Blockstream Jade and playing around with air-gapped keys and wallets on Nunchuk.

I created a new wallet on the Jade and setup a singlesig wallet on Nunchuk with that key, let's call it Key #1. Did some air-gapped transactions, all good.

I want to setup a 2of2 multisig wallet on Nunchuk now. Can I create just one new wallet/private key on Jade, call it Key #2, and use the two keys I have as the two keys for the multisig? I guess two questions here:

  1. Will the singlesig wallet with Key #1 still function totally normally and independently?

  2. Is this unsafe to do? Both keys are mine and I don't plan to use the original singlesig wallet - it was just for testing.

I could just create two new keys for the multisig but it got me thinking - isn't a recovery phrase/private key the same thing as a wallet? So if you create n keys for a multisig each of those keys should on their own correspond to separate singlesig wallets in addition to being keys for the totally separate multisig wallet. Is that correct?



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