I would like to understand all the advantages of a descriptor wallet.

I comprehend that the wallet safeguards the user by not exposing the private key. However, when I use bitcoin-cli listdescriptors true, I can identify the xprv (hardened), thereby enabling the generation of the entire tree of private keys. Doesn't this pose a greater risk?

The next problem that the descriptor is going to resolve is the problem with xpub and not hardened private key.

How does the wallet currently sign transactions? I'm aware of the command signrawtransactionwithwallet, but what occurs in the background? Is the derivation calculated every time to obtain the private key and sign the transaction?


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