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
When was bitcoin founded?
2006
2007
2008
2009
Which is an example of a Bitcoin wallet address?
3FZbgi29cpjq2GjdwV8eyHuJJnkLtktZc5
buzz@bitcoin.com
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 information does a block contain (check all that apply):
Header
Merkle Root
Transaction List
Previous block transactions
Timestamp
Nonce
Hash of previous block
None of the above
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
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