Alby on Nostr: You can do whatever you want with that public key, the new keypairs are random, you ...

You can do whatever you want with that public key, the new keypairs are random, you can use it on Primal, or you can drop it and forget it.

Wallets are independend from Nostr keys there, it can be different, can be the same - depends which one you link initially when adding new wallet in the extension.
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Extension is *just* an interface, there are no channels nor channel management. It uses some node (like Alby Hub, or shared by Coinos, or your Start9, etc.) and that node manages channels. If you connect the extension to your existing Alby Hub with channels, there is no need to open more