how does this work?
can you sign transactions with your nostr key?
is there a wallet for that?
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You need only use your Nostr extension
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to do what exactly?
the link you posted just generates a btc pubkey
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PubKey for testnet4 and mainnet. More details: Nostr identity is based on bitcoin taproot. The Npub is an enoding of your taproot key with npub prefix. Bitcoin taproot and testnet use the prefixes bc1p and tb1p.
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Doesn’t getalby do this when you create a master key?
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Yes, but Nostr extension isn’t connected with LN. Only via relays and your private keys.
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