Multiple Choices
(Choose 1 answer)
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
