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(Choose 1 answer)
☐ A
Which of the following statement is true?
A. The process of adding blocks to a blockchain is computationally expensive, and even more so to change
blocks further back in the chain.
B. Any miner trying to add a new block of data is required to provide a cryptographic proof called Proof of
Work.
C. To produce the Proof of Work, a miner will have to perform multiple rounds of hashing with the data of the
previous block such that the resultant hash value begins with a specified number of zeros.
D. All of the others
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