Blockchain at Georgia Tech: History & Basics of Blockchain

Which of these was the earliest attempt at digital money?

Bitgold

E-gold

Digi Cash

Bitcoin

Who wrote the following quote: "Privacy is necessary for an open society in the electronic age. Privacy is not secrecy…Privacy is the power to selectively reveal oneself to the world.”

Satoshi Nakamoto

Eric Hughes

Elon Musk

David Chaum

What was the 1992 Cypherpunk’s core belief?

Cryptocurrencies would soon take over the internet

The internet would soon host all our payment methods

The internet would soon become an important battleground for human freedom

All the above

What is the purpose of decentralization?

A. Reduce single points of failure

B. Avoid government control and oversight

C. Transfer control and decision-making from a centralized entity to a distributed network

Both A and C

What is the double spend problem?

Being able to spend money online and offline at the same time

One unit of digital currency being spent twice

Taking out a loan and spending the money

None of the above

How do you solve the double spend problem?

A ledger

Miners

Proof of stake

Proof of work

Which of the following is not a feature of a public blockchain?

Permissionless

Distributed

Mutable

Time-stamped

Which is a valid definition of a blockchain?

�A Blockchain is a trusted coordination mechanism” - Ittai Abraham

�Blockchains are computers that can make commitments” - Chris Dixon

�A blockchain is a database not controlled by a single entity” - Albert Wagner

All of the above

The founder of Bitcoin, Satoshi Nakamoto, identity is known:

True

False

Which is an example of a Bitcoin wallet address?

3FZbgi29cpjq2GjdwV8eyHuJJnkLtktZc5

[email protected]

642 Ferst Drive

None of the above

Bitcoin uses ______ as its consensus mechanism while Ethereum, post merge, uses ________.

Proof of work, proof of work

Proof of stake, proof of work

Proof of work, proof of stake

Proof of stake, proof of stake

How many minutes are there between each Bitcoin block?

1 minute

30 seconds

10 Minutes

3 sec

What data structure is most closely related to a blockchain

Hashmap

Double Linked List

Array

Single LinkedList

Consensus is the process by which a group of peers – or nodes – on a network determine which blockchain transactions are valid and which are not:

True

False

Blockchain at Georgia Tech: History & Basics of Blockchain

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