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Blockchain CBDE Exam - Topic 5 Question 129 Discussion

Posted by Skye on Jun 16, 2026 at 09:50 PM

What are Private Keys used for?

Suggested Answer: B

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12 comments · newest first
DO
Domingo 2 months ago
I feel like they also help derive addresses. So, B is solid!
MA
Marion 2 months ago
Definitely! Option B makes the most sense to me.
TI
Tiera 2 months ago
I think private keys are crucial for signing transactions.
DA
Danica 3 months ago
They also sign transactions, that's a key function!
DE
Destiny 3 months ago
I thought public keys were enough, why do we need private ones?
HY
Hyman 3 months ago
Wait, can they really derive an address? Sounds sketchy.
DO
Dorcas 3 months ago
Totally agree, they keep your assets safe.
MA
Martha 3 months ago
Private keys are super important for security!
SU
Sunny 3 months ago
I’m confused about option C; I thought addresses were derived from public keys, not private ones.
TI
Tiara 4 months ago
I feel like option B is the right answer since it mentions signing transactions, which is definitely a key function of private keys.
AN
Andra 4 months ago
I remember practicing a question about how private keys protect public keys, but I can't recall the exact details.
SU
Sunshine 4 months ago
I think private keys are mainly used to sign transactions, but I'm not entirely sure if they also derive addresses.
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