Question

question 6 of 10
since blockchain technology is public, how are the identities of users protected?

• user identities are not protected since people use blockchain voluntarily.
• user identities are anonymous and protected by keys.
• hashes protect all user identities.
• each user is is assigned a unique block which is why it is called blockchain.

Explanation:

To determine the correct answer, we analyze each option:

• The first option is incorrect because blockchain does protect user identities (voluntary use doesn't mean no protection).
• The second option is correct: In blockchain, user identities are anonymous, and cryptographic keys (public and private keys) are used to protect and authenticate transactions while keeping identities private.
• The third option is incorrect as hashes are used for data integrity and linking blocks, not directly for protecting identities.
• The fourth option is incorrect; a blockchain is a chain of blocks containing transactions, not assigning a unique block per user.

Answer:

B. User identities are anonymous and protected by keys.