Crypto Jobs Test 1 — Questions and Answers
Question 1: What was the first transaction in a commercial cryptocurrency made for?
- Hotdog
- Mobile phone
- Pizza (Correct answer)
- Transportation
Correct answer: Pizza
The first known commercial transaction using Bitcoin occurred on May 22, 2010, when Laszlo Hanyecz famously paid 10,000 Bitcoins for two pizzas. This event is celebrated annually as 'Bitcoin Pizza Day' and marked a significant milestone. It demonstrated Bitcoin's potential as a real-world currency for purchasing goods and services, moving it beyond a purely theoretical concept.
Question 2: How many cryptocurrencies are there in total as of 2025?
- Greater than 200
- Greater than 1500
- Greater than 4000 (Correct answer)
- Greater than 7000
Correct answer: Greater than 4000
The cryptocurrency market has experienced explosive growth since Bitcoin's inception, with thousands of new digital assets emerging. As of 2025 (and even earlier, by 2021-2022), the total number of cryptocurrencies listed on various exchanges and data aggregators has well exceeded 4,000. This reflects the diverse applications and experimental nature of blockchain technology, with new projects constantly being developed.
Question 3: How many of the top cryptocurrency coins by market capitalization account for 90% of all cryptocurrency value?
- 20 (Correct answer)
- 40
- 50
- 60
Correct answer: 20
The cryptocurrency market is highly concentrated, with a relatively small number of top coins by market capitalization accounting for the vast majority of the total market value. Historically, the top 10-20 cryptocurrencies, including giants like Bitcoin and Ethereum, have consistently held over 80-90% of the entire market's capitalization. This indicates a significant dominance by a few established and widely adopted projects.
Question 4: What is the maximum number of Bitcoin that can be mined?
- 21 million (Correct answer)
- 50 million
- 35 million
- 43 million
Correct answer: 21 million
Bitcoin has a hard-capped supply limit of 21 million coins, a fundamental aspect of its design that ensures scarcity and prevents inflation. This fixed supply is gradually released into circulation through the mining process, with the reward for mining new blocks halving approximately every four years. This mechanism ensures that the maximum supply will be reached around the year 2140.
Question 5: You must pay transactional fees known as ________ when using the Ethereum network.
- Gas (Correct answer)
- Ethereum Tax
- BTC
- Liquid
Correct answer: Gas
On the Ethereum network, users must pay transactional fees known as 'gas' to execute operations, send tokens, or interact with smart contracts. Gas is a unit of computational effort, and its price (gas price) is denominated in Gwei (a small fraction of Ether). These fees compensate miners/validators for processing transactions and securing the network, ensuring the network's operational integrity.
Question 6: What currency was a joke at first?
- Dogecoin (Correct answer)
- Shiba INU
- Bitcoin
- Litecoin
Correct answer: Dogecoin
Dogecoin was created in 2013 as a lighthearted joke, parodying the proliferation of altcoins at the time, and featuring the popular 'Doge' meme. Despite its humorous origins, Dogecoin unexpectedly gained significant popularity and a large community, evolving into a prominent cryptocurrency. It is often used for tipping, charitable causes, and has seen periods of significant market valuation.
Question 7: Which nation is the top one for mining cryptocurrencies?
- Japan
- Bahrain
- USA
- China (Correct answer)
Correct answer: China
China has historically been the dominant nation for cryptocurrency mining, largely due to its access to cheap electricity and specialized hardware manufacturing. Despite government crackdowns and shifts in mining operations to other regions, China's past and sometimes resurging influence means it remains a significant player in the global mining landscape. Its scale of operations once far surpassed other countries, establishing its reputation as the top mining hub.
Question 8: What amount of bitcoin has been misplaced or is trapped in accessible wallets, as per crypto data analysis?
- 10%
- 20% (Correct answer)
- 35%
- 56%
Correct answer: 20%
According to various crypto data analyses, including reports from firms like Chainalysis, approximately 20% of all Bitcoin is estimated to be lost or trapped in inaccessible wallets. This includes coins whose private keys have been lost, forgotten, or belong to individuals who have passed away without providing access. This significant portion of lost supply contributes to Bitcoin's scarcity and impacts its overall market dynamics.
Question 9: Which nation was the first to recognize Bitcoin as legal tender?
- El Salvador (Correct answer)
- Uruguay
- Venezuela
- Texas
Correct answer: El Salvador
El Salvador made history on September 7, 2021, by becoming the first sovereign nation to adopt Bitcoin as legal tender. This decision allowed Bitcoin to be used for all transactions alongside the US dollar, aiming to boost financial inclusion and facilitate remittances. The move garnered global attention and sparked discussions about cryptocurrency adoption by other countries.
Question 10: How many people on the Forbes 2025 Billionaires list were "CRYPTO BILLIONAIRES"?
- 9
- 12 (Correct answer)
- 18
- 22
Correct answer: 12
The Forbes 2025 Billionaires list identified 12 individuals whose wealth was primarily derived from cryptocurrency holdings and ventures. These 'crypto billionaires' reflect the significant wealth creation and growing influence of the digital asset industry. Their inclusion on such a prominent list underscores the increasing mainstream acceptance and financial impact of the cryptocurrency market.
Question 11: An upward trend in market values. It is frequently used in both regular markets and the cryptocurrency arena.
- Bull Market (Correct answer)
- Non-fungible Token (NFT)
- Smart ContractWeak Hands
- Weak Hands
Correct answer: Bull Market
A 'Bull Market' describes a sustained period where market prices are generally rising, indicating widespread investor confidence and optimism. This term is commonly used in both traditional financial markets and the cryptocurrency arena to signify an upward trend. During a bull market, investors typically expect prices to continue increasing, leading to potential gains.
Crypto Jobs Test 1
What was the first transaction in a commercial cryptocurrency made for?