Cryptocurrency Questions and Answers — Questions and Answers

Question 1: Which of the following is the most common method of keeping bitcoins?

Stack
Pocket
Wallet (Correct answer)
Box

Correct answer: Wallet

Bitcoins, and other cryptocurrencies, are most commonly kept in digital wallets. These wallets don't physically store the coins but rather hold the private keys necessary to access and manage a user's cryptocurrency addresses on the blockchain. Wallets can be software-based (desktop, mobile, web) or hardware-based, offering varying levels of security and convenience.

Question 2: Which of these US states has enacted the BitLicense cryptocurrency regulation?

Washington
Texas
California
New York (Correct answer)

Correct answer: New York

New York State was the first US state to enact a specific regulatory framework for businesses dealing with virtual currencies, known as the 'BitLicense,' in 2015. This regulation requires companies engaging in virtual currency business activity within or involving New York to obtain a license from the New York Department of Financial Services (NYDFS). It aims to protect consumers and prevent illicit activities within the state.

Question 3: The FBI shut down which Ross Ulbricht-run website that allowed users to buy drugs with Bitcoin?

Dark Alley
Silk Road (Correct answer)
Lace Place
Silk Street

Correct answer: Silk Road

Silk Road was a notorious online black market and the first modern darknet market, primarily known for facilitating the sale of illegal drugs and other illicit goods using Bitcoin. It was operated by Ross Ulbricht, known as 'Dread Pirate Roberts,' and was shut down by the FBI in 2013, leading to Ulbricht's arrest and conviction.

Question 4: What is the meaning of UTXO?

Union of Texas Operations
Unspent Transaction Output (Correct answer)
United Transaction Office
United Texan Xerox Organization

Correct answer: Unspent Transaction Output

UTXO stands for Unspent Transaction Output, a fundamental concept in Bitcoin and other cryptocurrencies. A UTXO represents a discrete amount of cryptocurrency that has been received in a transaction but has not yet been spent. When you spend Bitcoin, you are essentially consuming one or more UTXOs and creating new UTXOs as change and payment to the recipient.

Question 5: What was the name of the well-known Japanese Bitcoin exchange that went bankrupt in 2014?

Bitstamp
Blockchain.info
Tradehill
Mt. Gox (Correct answer)

Correct answer: Mt. Gox

Mt. Gox was once the largest Bitcoin exchange in the world, handling over 70% of all Bitcoin transactions at its peak. In 2014, the Tokyo-based exchange collapsed after revealing that it had lost hundreds of thousands of bitcoins due to alleged hacking and mismanagement. Its bankruptcy was a major event that significantly impacted the early cryptocurrency market and highlighted security risks.

Question 6: What is the definition of a hash function?

Gas
Takes an input of any length and returns a fixed-length string of numbers and letters (Correct answer)
A fork
UTXO

Correct answer: Takes an input of any length and returns a fixed-length string of numbers and letters

A hash function is a cryptographic algorithm that takes an input (or 'message') of any size and produces a fixed-size string of characters, known as a hash value or digest. This process is one-way, meaning it's computationally infeasible to reverse the hash to find the original input. Hash functions are crucial for data integrity, digital signatures, and blockchain security.

Question 7: Merkle Trees were created by who?

Vitalik Buterin
Nick Szabo
Ralph Merkle (Correct answer)
Ralph Wiggum

Correct answer: Ralph Merkle

Merkle Trees, also known as hash trees, were patented by Ralph Merkle in 1979. They are a fundamental data structure used in computer science and cryptography, particularly in blockchain technology. Merkle Trees efficiently verify the integrity and authenticity of data by hashing blocks of data in a tree-like structure, allowing for quick and secure verification of large datasets.

Question 8: What is the location of the bitcoin central server?

London
Washington DC
Undisclosed Location
None of the above (Correct answer)

Correct answer: None of the above

Bitcoin is a decentralized cryptocurrency, meaning it does not have a central server or controlling authority. Its network is distributed across thousands of nodes worldwide, with each node maintaining a copy of the blockchain. This decentralized architecture is a core feature that makes Bitcoin resistant to censorship and single points of failure, ensuring no single entity controls the network.

Question 9: What distinguishes blockchain as tamper-proof?

Servers
VPN
Immutability (Correct answer)
Cryptocurrency

Correct answer: Immutability

The tamper-proof nature of blockchain stems from its immutability. Once a block of transactions is added to the blockchain, it cannot be altered or deleted because each new block contains a cryptographic hash of the previous block. Any attempt to change an old block would invalidate all subsequent blocks, making such tampering easily detectable and virtually impossible to execute across the distributed network.

Question 10: When did the Bitcoin Network begin?

September 2001
November 2008
January 2009 (Correct answer)

Correct answer: January 2009

The Bitcoin network officially began on January 3, 2009, when its pseudonymous creator, Satoshi Nakamoto, mined the genesis block (Block 0). This event marked the launch of the world's first decentralized digital currency and the beginning of the blockchain era. The whitepaper describing Bitcoin was published a few months prior, in October 2008.

Question 11: What is a Dash Masternode and how does it work?

Master of all Dash nodes
Two nodes sharing resources
A single node that runs the whole network
A node that provides additional supervisory network services (Correct answer)

Correct answer: A node that provides additional supervisory network services

A Dash Masternode is a specialized type of node on the Dash cryptocurrency network that provides advanced services beyond basic transaction processing. These services include InstantSend (instant transactions), PrivateSend (transaction mixing for privacy), and governance functions. Masternodes require a collateral of 1,000 DASH and are rewarded for their services, contributing to the network's security and functionality.

Question 12: IPFS is an acronym that stands for

Internet Platform for Storage
Internet Play Store
Inter Filing System
Interplanetary File System (Correct answer)

Correct answer: Interplanetary File System

IPFS stands for Interplanetary File System. It is a peer-to-peer hypermedia protocol designed to make the web faster, safer, and more open by allowing users to store and share data in a distributed file system. Instead of locating content by *where* it's stored (like a URL), IPFS locates content by *what* it is (its cryptographic hash), making it resilient and decentralized.

Question 13: True or false: Blockchain and Bitcoin are the same thing.

A) False (Correct answer)
B) True

Correct answer: A) False

Explanation The correct answer False

Question 14: What was the name of the first academic study that described bitcoin as it is now known?

The great unrevealing
The origins of money
The Bitcoin Whitepaper (Correct answer)

Correct answer: The Bitcoin Whitepaper

Explanation Abstract of the Bitcoin Whitepaper Without passing via a banking institution, a peer-to-peer version of electronic cash would allow internet payments to be transmitted directly from one party to another.

Question 15: What is a LiteClient, and how does it work?

A type of cryptocurrency
Allows you to interact with the blockchain without downloading the whole blockchain (Correct answer)
A server
A platform to develop Apps

Correct answer: Allows you to interact with the blockchain without downloading the whole blockchain

Explanation You can see material in the Data Discovery, Story Board, Alerts, and Publications menus using the Lite client. Expand, drill, dice, pivot, sort, filter, and other context-menu actions are available in the Lite client.

Question 16: UTXO is used by Bitcoin, while Ethereum uses:

Account Balance (Correct answer)
Double spend
Ether
UTXO

Correct answer: Account Balance

Explanation The Unspent Transaction Output (UTXO) system is used by Bitcoin, while the Account Based model is used by Ethereum. Both models are, at their most basic level, models for tracking database state, and each model's implementation in its respective platform serves a distinct purpose and plays a specific role in the platform's wider structure.

Question 17: Who has access to a record stored on a blockchain?

Only the people involved in the transaction
Multiple people simultaneously. (Correct answer)
One person at a time.

Correct answer: Multiple people simultaneously.

Explanation The correct answer Multiple people simultaneously.

Question 18: Is it possible to change records that have been uploaded to a blockchain?

No – they cannot be altered. (Correct answer)
Yes – the parties can go back in and alter them at any time
Yes – but only within a certain time frame

Correct answer: No – they cannot be altered.

Explanation Records can't be changed once they've been posted to the blockchain, even by the record's owner, giving transactions a high level of security. The AICPA will continue to watch legislation around the country due to the disruptive power of emerging technologies.

Question 19: What are sidechains, exactly?

Any mechanism that allows tokens from one blockchain to be securely used within a completely separate Blockchain (Correct answer)
Another term for a hash function
Smart Contracts that have forked off the main Blockchain
A parallel network running adjacent to the main blockchain network for additional security

Correct answer: Any mechanism that allows tokens from one blockchain to be securely used within a completely separate Blockchain

Explanation The correct answer Any mechanism that allows tokens from one blockchain to be securely used within a completely separate Blockchain

Question 20: Is it possible to program a blockchain to automatically record transactions?

A) No
B) Yes (Correct answer)

Correct answer: B) Yes

Explanation It is also possible to program the blockchain to automatically record transactions. The monetary worth of those transactions is frequently calculated in cryptocurrencies—that is, digital currencies that are not regulated by a central bank—rather than in US dollars or any other standard centralized currency.

Question 21: When did the digital currency's developer produce a whitepaper introducing it?

2010
2006
2011
2008 (Correct answer)

Correct answer: 2008

Explanation Satoshi Nakamoto's white paper, which was published on October 31st, 2008, marked the beginning of Bitcoin as we know it today. The creator's identity is still unknown, despite the fact that it was written under the pseudonym Satoshi Nakamoto. Despite this, the Bitcoin white paper (pdf) is a groundbreaking work that heralds the dawn of the digital money era.

Question 22: What is the common name for the process of producing new bitcoins?

Mining (Correct answer)
Finding
Panning
Sourcing

Correct answer: Mining

Explanation Mining is the process by which new Bitcoins are created. In particular, each time A miner adds a block of transactions to the Bitcoin blockchain in the correct order.

Question 23: Is there a limit to how many bitcoins may be created?

21 million (Correct answer)
16 million
There is no maximum
100 million

Correct answer: 21 million

Explanation The maximum number of bitcoins that can be created is 21 Million

Question 24: How often does the Bitcoin ledger need to be reconciled?

Every 10 Minutes (Correct answer)
Every day
Every 3 months
Every 3 Minutes

Correct answer: Every 10 Minutes

Explanation The correct answer Every 10 Minutes

Question 25: On the CoinDesk Bitcoin Price Index, what was the highest Bitcoin price ever?

$984
$1,113
$2,346
$1,165 (Correct answer)

Correct answer: $1,165

Explanation The correct answer $1,165

Cryptocurrency Questions and Answers

Which of the following is the most common method of keeping bitcoins?