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Blockchain CBDE Exam - Topic 5 Question 129 Discussion

Actual exam question for Blockchain's CBDE exam

Question #: 129
Topic #: 5

[All CBDE Questions]

What are Private Keys used for?

ATo Protect the Public Keys by being cryptographically significant.

BTo Sign Transactions And To Derive an Address From.

CTo Generate An Address which can sign transactions.

Show Suggested Answer

Suggested Answer: B

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

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Dorcas

3 days ago

Totally agree, they keep your assets safe.

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Martha

8 days ago

Private keys are super important for security!

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Sunny

13 days ago

I’m confused about option C; I thought addresses were derived from public keys, not private ones.

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Tiara

18 days ago

I feel like option B is the right answer since it mentions signing transactions, which is definitely a key function of private keys.

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Andra

23 days ago

I remember practicing a question about how private keys protect public keys, but I can't recall the exact details.

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Sunshine

29 days 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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