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This quiz will test your understanding of Lecture 9.

In accordance with the Coursera Honor Code, I (Anonymous Student) certify that the answers here are my own work.

Question 1

In which of these situations could secure timestamping be useful? Assume that there is no way to prove that you didn’t timestamp multiple values

Proving that you can predict the winner of the 2016 US presidential election

Proving possession of a document at a specific time

Proving that you don’t know something at a specific time

Securely saving a document at a specific time

Question 2

The OpenAssets protocol works by

Associating extra metadata with bitcoins

Exploiting non-fungibility of bitcoins to impose a blacklist

Forking Bitcoin to allow many different types of “colored” coins

Enabling conversion between Bitcoin and a new type of coin

Question 3

Which of the following features does the Bitcoin secure multi-party lottery system presented depend on? (check all that apply)

Question 4

Which of these are advantages of using the Bitcoin blockchain to generate a cryptographic beacon? (check all that apply)

Fresh random bits can be obtained at any desired future time

The beacon outputs random bits at frequent intervals

The cost to an attacker to manipulate the beacon’s output is quantifiable

Manipulating the beacon output requires 51% mining power

No central authority is needed

Question 5

In a prediction market where shares pay out if and only if a potential future event happens: (check all that apply)

A trader who is able to control or influence the outcome of the event will likely be able to make a profit

The average price of all shares traded as a fraction of the payout is an estimate of the event’s likelihood

The current price of shares as a fraction of the payout is an estimate of the event’s likelihood

In accordance with the Coursera Honor Code, I (Anonymous Student) certify that the answers here are my own work.

You cannot submit your work until you agree to the Honor Code. Thanks!

Bitcoin and Cryptocurrency Technologies

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Bitcoin and Cryptocurrency Technologies

Bitcoin and Cryptocurrency Technologiesby Arvind Narayanan

Lecture 9 Quiz Help Center

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Bitcoin and Cryptocurrency Technologies
by Arvind Narayanan