Bitcoin Core HD Wallet

[Darian]

Is Bitcoin Core using a real HD wallet?
So I can backup the first wallet.dat and that's it?
(like Electrum does with the seed)

Otherwise I have to backup the wallet too often.

 

[Marvin]

As long as your wallet has been created after 0.13 (If you created it between 0.13-0.16, please check if you've actually created a HD wallet!) and you have not imported any private keys.

 

[Braden]

I use the lastest version:
Bitcoin Core Version v0.20.1.

The wallet was created 2 weeks ago.
What about password change. Does this invalidate the HD wallet?

 

[Mathew]

I use the lastest version:
Bitcoin Core Version v0.20.1.

The wallet was created 2 weeks ago.
What about password change. Does this invalidate the HD wallet?

No, changing the password does not affect your wallet seed. Your seed will only change if you traverse from an unencrypted wallet to an encrypted wallet. (eg: No passphrase -> passphrase)

See: https://bitcointalk.org/index.php?topic=5098183.msg49271427#msg49271427

 

[Gustavo]

Can I export the master private key?
So that I can store the information on paper?

 

[Mauricio]

Can I export the master private key?
So that I can store the information on paper?

For that you can use the
Code:
dumpwallet "path"
command. https://bitcoincore.org/en/doc/0.16.0/rpc/wallet/dumpwallet/

However, you should note that you cannot recover your keys with just the MPK within bitcoin core.

If you wish to recover with just the master private key, a third-party library will be required.

 

[Kellan]

What's the "inactivehdseed" in dumpwallet?
My wallet is encrypted since day 1.

 

[Niko]

it's the old hd seed from before you encrypted the wallet for the first time. see what adolfin said in post 4 above.

the wallet is automatically created when you first run bitcoin core and is unencrypted until you set a password.