Bitcoin Proof-of-Work (PoW) Quiz!
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"Difficulty" in bitcoin typically refers to:
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10 points
(True / False): Bitcoin nodes must coordinate to calculate the difficulty adjustment.
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10 points
(True / False): Finding a hash with two leading zeros will NOT always take less time than finding a hash with three leading zeros.
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10 points
In 2008, Satoshi Nakamoto sent an email to James Donald on the cypherpunk mailing list explaining how proof-of-work is a solution to the Byzantine Generals' Problem. In Nakamoto's own words from that email, proof-of-work solves a ______ problem.
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10 points
Adam Back's Hashcash was cited as one of the eight references at the end of the Bitcoin whitepaper in 2008.
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10 points
How often does the difficulty adjustment occur?

Select all that apply:
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10 points
Required
The following are examples of proofs-of-work:

Select all that apply:
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10 points
Required
Which of the following is the best definition of Nakamoto Consensus?
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10 points
In bitcoin, the term "nonce" means:
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10 points
In order to increase the chances of his transaction being confirmed quickly, Bob (a bitcoin user) can do which of the following?
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10 points
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