> Hm, alrighty! Besides: how did you manage to quote like that?

This way?

Select text and click reply. It uses '>' character like in emails.

Hm, alrighty! Besides: how did you manage to quote like that?

Fabs

Yes, you can. At least according to your answers below...

"if I give you my xpub and a related private key (for a public key at derivation path xpub/1/0/2), which funds could you steal from me?"

"if I give you my xpub and a related private key at derivation path xpriv/1h/0/1, where xpriv is unknown to you, what can you steal and/or discover? (xpub is counterpart of the unknown xpriv)"

"is it safe (or how much safe is) to give your xpub to anybody?"

Well, depends, publishing xpub generally breaks privacy.

...and assuming that no related private key would leak in the future.

I'm absolutely at the beginning of this topic, but man!

Could I sway you to help me improve on this part? You seem like a treasure trove. 🤠🔥

I believe that these exercises cover the most important parts of bip39 well. If you can answer them with confidence, you understood it enough. If you have a question, just ask...

bitcoin_beginners

[TECHNICAL] Initial draft of my [personal] summary on part #2 of HD-wallets /ECC

>> Man... You're clearly way way ahead of me... I can't answer any of those except maybe:

Yes, you can. At least according to your answers below...

> "if I give you my xpub and a related private key (for a public key at derivation path xpub/1/0/2), which funds could you steal from me?"
>> I think a malicious actor can acquire the xpriv by working backwards from the xpub + a related private key, potentially stealing all the funds.

Explain why or show how to do it 😉.

> "if I give you my xpub and a related private key at derivation path xpriv/1h/0/1, where xpriv is unknown to you, what can you steal and/or discover? (xpub is counterpart of the unknown xpriv)"
>> Only the "local" funds of that respective  key pair?

👍

> "is it safe (or how much safe is) to give your xpub to anybody?"
>> Generally, yes,

Well, depends, publishing xpub generally breaks privacy.

>> as long as there are no related private keys leaked.

...and assuming that no related private key would leak in the future.

> I'm absolutely at the beginning of this topic, but man!
> Could I sway you to help me improve on this part? You seem like a treasure trove. 🤠🔥

I believe that these exercises cover the most important parts of bip39 well. If you can answer them with confidence, you understood it enough. If you have a question, just ask...
