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Is using the CLI command gen keys new to generate a cryptographically secure key-pair the most secure method for cold storage eg. paper wallet? Which signature algorithm (ed25519, secp256k1, p256) should be used and what are the benefits/drawbacks for this purpose?
Or is storing the XTZ on a Ledger hardware wallet the best/secure option? Are there other alternatives available for cold storage?
Hardware wallets like the Ledger Nano are good cold storage solutions.
Offline-wallet creation in an air-gap device is also a good solution.
Kukai wallet offers you the possibility to do offline-signing so your seed is never exposed to the online world when interacting with the network.
