40+ Cryptocurrency Interview Questions and Answers 2022

Cryptocurrency is the future of money. It’s more secure, it’s not under the control of any centralized institution, and transactions are far cheaper than they would be with traditional fiat currencies.

In this article, we will talk about cryptocurrency interview questions. There are many resources for information on cryptocurrencies, but not all of them offer the detailed and practical advice you need to succeed in this space.

Cryptocurrency Interview Questions

Cryptocurrency Interview Questions and Answers

What is a cryptocurrency?

A cryptocurrency is a digital or virtual currency that uses cryptography to secure its transactions and to control the creation of new units. Cryptocurrencies are decentralized, not subject to government or financial institution control.

What is blockchain technology?

Blockchain technology is the underlying infrastructure of cryptocurrencies. It is a public distributed ledger of all transactions across a peer-to-peer network.

What is the difference between public and private blockchain?

A public blockchain can be accessed by anyone on the internet, while a private blockchain is restricted to participants in an organization or consortium. Public blockchains tend to have fewer security controls than their private counterparts, making them more vulnerable to attack.

What is an altcoin?

An “alt” or alternative coin, like bitcoin, is any cryptocurrency other than the original (first) decentralized digital currency: Bitcoin. Examples of altcoins include Litecoin and Monero.

How does mining work with cryptocurrencies?

A miner uses computer processing power to complete complex math problems, then adds to the blockchain. Each time a new block is completed, it gives out rewards in cryptocurrency.

What are some examples of decentralized applications?

Decentralized applications, or dapps, run on top of a peer-to-peer network with no central authority overseeing them. Decentralized apps are similar to their web app counterparts, but they are built upon a blockchain and use cryptographically secure data structures. Some of the examples are OpeaSea and IPSE.

What is the difference between Bitcoin and Ethereum?

Bitcoin was developed as an alternative to traditional fiat currencies such as dollars or euros; it uses cryptography for security, differentiating it from regular fiat money. The primary purpose of Bitcoin is to be a digital currency that can be used for transactions.

Ethereum, on the other hand, is a platform that allows developers to build decentralized applications using blockchain technology. Ethereum also uses cryptography, but it has additional features such as smart contracts, which allow for more complex transactions.

What’s the difference between cryptocurrency and tokens?

Tokens are created on top of existing blockchain platforms, such as Ethereum, and can be used to represent a variety of assets or rights. Cryptocurrencies are digital tokens that use cryptography for security.

What is an ERC20 token?

ERC20 tokens are tokens that have been created using the Ethereum platform’s standard for how tokens should function. It allows for interoperability between different tokens and makes it easier for developers to create multiple tokens applications.

What is a digital asset?

A digital asset is any asset that exists in electronic form. It includes traditional assets such as stocks, bonds, real estate, and new assets such as cryptocurrencies and tokens.

What is a security token?

A security token is a digital asset representing ownership or equity in an organization. Security tokens can also represent other rights, such as voting rights or the right to receive dividends.

What is a utility token?

A utility token is a digital asset that provides access to a particular product or service. These tokens may not be considered securities under certain circumstances, depending on how they are structured and used.

What difference is between a security token offering (STO) and an initial coin offering (ICO)?

An STO is similar to an IPO; it allows investors to buy shares in a company using cryptocurrency rather than fiat money. Unlike an ICO, the token is backed by a real asset and may provide additional investor protections such as dividends or voting rights.

How do you store cryptocurrencies?

Cryptocurrencies are stored in digital wallets that exist locally on your computer or online through a private web service. These wallets often have varying types of security measures to protect your funds.

Cryptocurrency Wallet

What is Cold Wallet?

Cold storage is a type of cryptocurrency storage where the funds are stored offline. It can be done by either storing the cryptocurrencies on a hardware wallet or in an encrypted paper wallet.

What is a hot wallet?

Hot storage is a type of cryptocurrency storage where the funds are stored online. It can be done by storing your cryptocurrencies either on an exchange or through a third-party service, such as Coinbase.

What is the difference between hot storage and cold storage wallets?

Hot storage wallets are connected to the internet while cold storage wallets aren’t; this means that funds in a hot wallet can be accessed more quickly but may also be at greater risk of being stolen. Cold storage wallets are more secure but can take longer to access funds.

How do blockchains work?

A blockchain is created when a new block of transactions is added to the network. All nodes verify this block on the web and are added to the blockchain.

Verifying a new block is known as mining, and the nodes that successfully add a block to the chain are rewarded with cryptocurrency. A blockchain is an immutable list of blocks that have been verified by a network of users rather than a single centralized authority.

What is proof-of-work?

Proof-of-work systems use computational power from computers to verify the blocks of transactions on a blockchain. This process is known as mining, and it requires specialized hardware to be successful.

What are smart contracts?

Smart contracts are protocols that facilitate, verify, or enforce the negotiation or performance without third-party involvement. Smart contracts can act like other contractual clauses, including bonds, escrows, and bank accounts.

What is a decentralized application?

A decentralized application or dapp uses open-source code that runs on a blockchain network without the need for centralized control. It allows anyone to directly interact with an app without going through third-party service providers such as Google Play Store or Apple’s App Store.

How do you develop a decentralized application?

Developing a dapp usually requires expertise in multiple programming languages such as Solidity, Java, and Python. You will also need to be familiar with the specific blockchain network you want to use. Additionally, you will need to create or purchase the necessary tokens to power your app.

What is Genesis Block?

The Genesis Block is the first block on a blockchain. This block is usually created when the network is launched, and it contains all of the necessary information to start running the network. The Genesis Block also generates the initial supply of cryptocurrency tokens for the network.

What are forks in cryptocurrency?

Forks occur when two or more blocks have the same hash. This can happen when two miners create a block at approximately the same time or when there is a disagreement over the validity of a block. When this happens, the network splits into two separate chains, and each chain continues to grow independently.

Forks occur when two miners discover their next blocks nearly the same time. It can happen because of a software bug or an attack on the network, resulting in added competing chains to the blockchain.

What is NFT?

NFT stands for Non-Fungible Token. These tokens are unique and cannot be interchangeable with other tokens on the same network. NFTs are often used to represent digital assets or collectibles and can be stored on specialized wallets.

Who is Satoshi Nakamoto?

Satoshi Nakamoto is the unknown inventor of Bitcoin. Satoshi first introduced the concept of Bitcoin in 2009 by releasing a whitepaper about how decentralized currencies could exist without being controlled by any one entity or government. Satoshi’s identity remains anonymous and has been shrouded in mystery for over ten years.

What are atomic swaps?

Atomic swaps exchange one cryptocurrency to another without using a trusted third party. It means that it can be completed directly between users on different blockchains instead of needing to trust an intermediary like Coinbase or Gemini.

Atomic swaps require two-way smart contracts and hash time-locked contracts (HTLCs) to work correctly.

What is the difference between cryptocurrency and digital currency?

Cryptocurrency is a type of digital currency that uses cryptography to secure transactions and control the creation of new units. Cryptocurrencies use decentralized control instead of centralized electronic money or centralized banking systems.

Digital currencies are fiat currencies that exist only electronically instead of in physical forms such as banknotes and coins.

What are the types of cryptocurrency?

There are three primary types of cryptocurrency: Bitcoin, Ethereum, and Binance Coin. Bitcoin is the first and most well-known cryptocurrency, Ethereum is a platform for decentralized applications, and Binance Exchange issues Binance Coin.

Other popular cryptocurrencies include Solana, XRP, Cardano, Terra, and Polygon.

Is it safe to store crypto on a mobile wallet?

Mobile wallets are an easy and convenient way to store cryptocurrency, but they aren’t always the safest. Mobile wallet apps come with many different risks that users need to be aware of before deciding whether or not it is safe for them.

Make sure you understand how your mobile wallet app works before using it with any valuable assets.

Which cryptocurrency is going to be worth the most in the future?

It is nearly impossible to predict which cryptocurrency will be worth the most in the future because so much can change from now until then. However, it has been theorized that cryptocurrencies with a fixed supply and those backed by something tangible such as gold or oil are more likely to increase value than currencies without these features.

What does GAS stand for?

It’s a fee that must pay to the blockchain each time you use Ethereum. This fee helps pay miners who run hardware necessary to confirm transactions on the network, which prevents spamming or other attacks from slowing down the network.

Gas fees also incentivize users to create smart contracts and transactions on the Ethereum network.

What is the best cryptocurrency to invest in now?

The two top cryptocurrencies for investment include Bitcoin, Ethereum. Do your research and understand the risks involved before investing any money into cryptocurrencies.

Which cryptocurrency is the most scalable?

Bitcoin and Ethereum are two of the most widely used cryptocurrencies, but they aren’t always considered the most scalable. The more transactions that need to happen at once, such as during a popular ICO or when many people transact with Bitcoin on the same day, the slower transaction times can become.

What is Decentralization?

Cryptocurrencies are decentralized, meaning that anyone entity or government doesn’t control them. It allows for a more democratic system in which users can directly control their funds without the need for permission from anyone else.

What is Halving?

Halving is a process that reduces the amount of new Bitcoin created every day. Bitcoins created will be cut in half every 210,000 blocks, or approximately four years. It is done to help control inflation and keep the value of Bitcoin high.

Who is Vitalik Buterin?

Vitalik Buterin is a Russian-Canadian programmer who invented Ethereum. His goal was to build an efficient decentralized platform for applications that needed smart contracts and other blockchain technology features.

More about Ethereum

Define HOLD?

HOLD is an acronym for “Hold On for Dear Life.” It is often used when referring to holding onto a certain cryptocurrency investment, hoping that its value will increase in the future.

What does it mean by Dark Nodes?

Dark nodes are computers that run the Bitcoin network but aren’t used for mining. They help verify transactions and relay them to other nodes on the network.

Define Satoshi?

A satoshi is a fraction of one bitcoin, which can be sent between people or used to buy things online without any fee attached. One hundred million (100,000,000) satoshis make up one bitcoin (BTC).


Cryptocurrency Interview Questions are essential for people who want to get into the cryptocurrency space. Whether you’re just starting or investing in Bitcoin and other cryptocurrencies, these questions will help you better understand how this technology works.

With over 1,000 currencies available on the internet today, it’s important to know which currency is worth your time before making an investment decision. I hope it helped you understand some of the basics of cryptocurrency and how it operates.

This article will help you feel more confident when answering interview questions about cryptocurrencies during an interview or meeting with potential employers in the space.

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