What Is Cryptocurrency?

Last updated Apr 08, 2024 | 03:37 PM UTC

By now, nearly everyone has heard of crypto!

A cryptocurrency is a digital currency that uses cryptography to ensure the security of financial transactions and confirm the transfer of assets.

Although cryptocurrencies are still a relatively new idea, it is impossible to ignore their current influence on the world economy and financial systems. 

This article covers the main features of cryptocurrencies, their underlying technology, and advantages and disadvantages.

Cryptocurrency explained

Learning the fundamental concepts of crypto is essential for understanding it. A cryptocurrency is a type of digital or virtual currency only available in digital form, as opposed to the physical coins and notes we are used to. In order to secure transactions and restrict the creation of new units, they are created and stored electronically.

Cryptocurrencies can be used for various purposes, including buying goods and services online, investing in them as a form of digital asset, or even sending money to others across the globe without the need for traditional banks or intermediaries.

The distinguishing feature of cryptocurrencies is their independence from any central authority, such as a bank or government. They rely on a system known as blockchain, which functions as a kind of digital ledger and records all transactions. The use of this blockchain technology guarantees transactions are safe, transparent, and challenging to alter.

By using the alias Satoshi Nakamoto, an unknown person or group of people launched the most well-known cryptocurrency, Bitcoin (BTC), in 2009. The invention of Bitcoin paved the way for the creation of thousands of other cryptocurrencies, each with its own special qualities and uses.

In addition to conventional financial transactions, cryptocurrencies have a variety of other applications. The idea of smart contracts is one that deserves special attention. Smart contracts are agreements that automatically carry out their terms because they are written in code. They automatically carry out transactions and uphold agreements, which lowers costs and boosts productivity without the use of middlemen.

Furthermore, cryptocurrencies have the potential to ease international trade, offer financial services to the unbanked, and develop new ways to raise money, like initial coin offerings (ICOs) and security token offerings (STOs). STOs and ICOs are ways to raise money in the cryptocurrency space by providing investors with digital tokens; STOs represent tokens that are backed by real-world assets or securities, while ICOs are more frequently associated with utility tokens.

History of cryptocurrencies

The first mentions of cryptocurrencies were in the 1980s. However, it was not before the 1990s that software and cryptographic protocols emerged in the market, along with the first forms of decentralized digital currencies.

In 2008, a person or group with the pseudonym Satoshi Nakamoto disclosed a whitepaper. It presented a system for developing a digital form of currency that didn’t rely on third-party trust. This was the start of the cryptocurrency revolution. Soon after that in 2009, the market saw the launch of the very first virtual coin, Bitcoin.

This crypto has turned into a must-choose solution for people who want to send money without the influence of banks or authorities. Since the growth of BTC was staggering, many users were not aware of how to use their digital holdings.

The emergence of Bitcoin was followed by the launch of several other cryptos, such as Litecoin, Ether, Dogecoin, Monero, Shiba Inu, and others. Even today, the number of new coins keeps on growing at a frantic pace. It has become a new way of life and an irreplaceable trend in the financial market. 

Characteristics of cryptocurrency

Cryptocurrencies may possess the following features; however, not all cryptocurrencies share these qualities because they may have different design decisions and goals.

  • Decentralization: Crypto operates on a peer-to-peer network without the need for a central authority, such as a government or bank, making them decentralized.
  • Cryptography: To secure transactions and regulate the creation of new units, cryptocurrencies use cryptographic techniques. This guarantees the digital assets' security and integrity.
  • Blockchain technology: Crypto relies on blockchain technology, a distributed ledger that keeps track of all transactions across a network of nodes (computers). The cryptocurrency ecosystem benefits from the transparency, immutability, and security offered by this technology.
  • Limited supply: There is a finite number of tokens that can ever exist because many cryptocurrencies have a predetermined maximum supply. The crypto's value and scarcity are maintained by this feature, which also helps to prevent inflation.
  • Privacy and anonymity: While not all cryptocurrencies offer total privacy, many of them do so by using pseudonymous addresses and cryptographic methods to conceal the identities of users taking part in transactions.
  • Global accessibility: Anyone with an internet connection can access and use cryptocurrencies, regardless of location or traditional banking infrastructure. Financial inclusion is encouraged by this universal accessibility.
  • Programmability: Some blockchains, such as Ethereum, support the creation and execution of smart contracts, self-executing contracts with the terms written directly into the code. This programmability creates a myriad of opportunities for novel use cases and decentralized applications.
  • Volatility: The price of crypto is notoriously volatile, with large swings in value occurring suddenly. Both investors and cryptocurrency users face opportunities and risks as a result of this volatility.
  • Irreversibility: A crypto transaction is nearly impossible to change or reverse once it has been verified and added to the blockchain. This feature improves security and removes the possibility of chargebacks, which are frequently related to conventional payment systems.
  • Open and transparent: The transaction history can be accessed in an open and transparent manner thanks to the blockchain technology that underpins cryptocurrencies. The blockchain's open access to transaction information promotes transparency and accountability within the cryptocurrency community.

How does cryptocurrency work?

Here are the steps that outline how cryptocurrencies work:


A process known as mining or minting is used to produce cryptocurrencies. For instance, mining for Bitcoin entails using powerful computers to solve challenging mathematical puzzles. Successful miners receive new cryptocurrency units as payment.

Blockchain technology

Cryptocurrencies are dependent on blockchain technology, a decentralized and distributed ledger. The blockchain is updated in chronological order by adding blocks of transactions. A chain of blocks is created by the unique cryptographic hash that connects each block to the one before it.


Users keep their digital currency in wallets, which can be hardware or software-based. To securely send and receive cryptocurrencies, these wallets create one-of-a-kind cryptographic addresses.


A user uses their wallet to create a transaction whenever they want to send cryptocurrency to someone else. The recipient's wallet address, the amount of cryptocurrency being sent, and a digital signature to confirm the transaction are all included in the transaction.


A transaction is broadcast to the crypto network as soon as it is created. On the network, miners or validators check the transaction's authenticity and confirm that the sender has enough money to finish it. 

This verification process often involves solving complex mathematical puzzles or reaching consensus using consensus algorithms. The blockchain's integrity is upheld by a variety of different consensus mechanisms, depending on the type of cryptocurrency being used.

The two most popular mechanisms are proof-of-stake (PoS), where validators are chosen based on their ownership or "stake" in the cryptocurrency, and proof-of-work (PoW), where miners compete to solve mathematical puzzles.

Block confirmation

Miners or validators group verified transactions into blocks. The transaction is then permanently recorded in the block after it is added to the blockchain. Every new block builds on the one before it.


Cryptographic techniques are used by cryptocurrencies to ensure the security of transactions and wallets. Users of public-key cryptography typically have a private key to sign transactions and a public key to receive funds. These keys enable secure and verifiable transactions because they are mathematically linked.

Mining rewards

Mined cryptocurrency and transaction fees are given to miners or validators who successfully add a block to the blockchain. This maintains the cryptocurrency supply, secures the blockchain, and encourages participation in the network.

Market dynamics

The dynamics of supply and demand in the market determine the value of cryptocurrencies. The price and volatility of cryptocurrencies can be influenced by elements such as market sentiment, adoption, regulatory developments, and general confidence in the technology.

Types of cryptocurrencies

The broader classification of cryptocurrencies is as follows:

Types of cryptos

  • Proof of Work: PoW cryptocurrencies like BTC and Dogecoin (DOGE) require miners to solve mathematical puzzles to validate transactions and add blocks to the blockchain.
  • Stablecoins: Stablecoins are digital currencies whose price is tied to an underlying asset, typically a fiat currency like the US dollar, in order to maintain a stable value. Examples of stablecoins include Binance USD (BUSD) and Tether (USDT).
  • Proof of Stake: Participants "stake" their coins to verify transactions and add new blocks to the blockchain in currencies that employ a proof-of-stake consensus mechanism. Compared to proof of work, this consensus mechanism aims to be more energy-efficient. Examples include Cardano (ADA), Solana (SOL), and Ethereum (ETH), which switched from PoW in September 2022.
  • DeFi coins: DeFi coins are tokens that are part of the decentralized finance ecosystem, which aims to create financial applications on blockchain networks. Frequently, these tokens are used for a variety of functions within DeFi platforms, including governance, utility, or liquidity. DeFi coins include Chainlink (LINK), Aave (AAVE), and Uniswap (UNI).
  • NFTs: The ownership of a particular digital asset or piece of content, such as artwork, music, collectibles, or virtual real estate, is represented by NFTs, which are distinctive digital tokens. Since blockchain networks offer transparency and immutability, NFTs are typically built on them. NBA Top Shot, CryptoPunks, and CryptoKitties are a few examples.

Advantages and disadvantages of crypto

Cryptocurrencies can be incredibly beneficial for their users. However, they also have some negatives that you should consider before purchasing coins or making your first investment.

Let's take a closer look at both of them!


  • Decentralization: Cryptocurrencies are managed by network participants. This ensures that the value of crypto depends on current supply and demand, without the interference of central banks. 
  • Fast transactions: Elimination of intermediaries means that crypto transactions are more efficient than fiat-based transfers. Since barriers are a matter of the past, you can receive money quickly. 
  • Cheap transfers: Crypto transactions remain cheap thanks to the elimination of third parties such as banks or credit card providers. Transaction fees are covered by the user, and there are no additional charges.
  • High security: Cryptocurrency payments are extremely secure thanks to the math puzzles set by a blockchain. Since they are hard to decode and pseudonymous, users remain secure and safe at all times. 
  • Protection from inflation: Many cryptocurrencies have the maximum limit of coins that will ever exist. Bitcoin, for example, has a max cap of 21 million, after which new coins won't be released. This means that value will continue to increase as we approach the limit. This will also hinder inflation. 

Pros & Cons Crypto


  • Volatility: The value of cryptocurrencies is based on speculation, so they are not the best choice for long-term investments. People have already experienced huge drops, but also considerable peaks of certain coins, and the future will see the same trend. Those who prefer consistency will probably look for alternative options. 
  • Scalability: Despite the lightning speed of transactions, cryptocurrencies have started to face some issues. The perfect example is Ethereum, where the blockchain had to deal with ‘capacity limitations’.
  • Environmental impact: Cryptocurrency mining has become a burning topic in the crypto circles. This activity requires a large consumption of energy which devastates our environment. Some countries with huge mining activity like China have increased their carbon footprint dramatically.
  • Irreversibility: Once you make a transaction with cryptocurrencies, you cannot retrieve it. This means that sending your money to the wrong wallet is a one-way road. You cannot get money back, which opens the space for misuse and other illicit activities. 

What is cryptocurrency used for?

The use of cryptocurrencies has become possible in different fields and industries. Below you’ll discover the most common areas of application:

  • Shopping: Thousands of merchants already accept cryptocurrencies, so you can purchase anything you imagine.
  • Donation: You can now donate crypto to charitable organizations and use it for good causes. 
  • Gifts: Making small deeds of appreciation has become a real thing thanks to crypto gifts. You can share some coins and surprise your nearest and dearest. 
  • Tipping: You can give tips to authors, content creators, or musicians for their work by sending some Bitcoin or alternative cryptos. Just find the QR code attached to their products and reward their work. 
  • Traveling: Spending crypto while traveling around the world is a staple. You’ll hear about travel communities that use popular coins for versatile transactions. Using crypto while traveling also lowers your costs and reduces fees.
  • Virtual gaming purchases: Using cryptocurrencies in a virtual gaming environment is a daily thing. You can now visit virtual nightclubs or galleries and purchase a bunch of elements. 

Cryptocurrency legal and tax issues

The legal and tax ramifications of crypto are complicated and can differ greatly between jurisdictions. In many nations, the legal status of crypto is still developing; some fully recognize and regulate them, while others impose limitations or outright bans.

To make sure that the relevant laws and regulations are followed, it is essential to understand the legal system in your particular jurisdiction.

Regulatory compliance is one of the key factors in the cryptocurrency industry. Governments and regulatory agencies are concentrating more on cryptocurrencies in order to stop illegal activities like tax evasion, money laundering, and the financing of terrorism.

Therefore, governments may mandate that people and organizations involved in cryptocurrency transactions abide by Know Your Customer (KYC) and Anti-Money Laundering (AML) laws.

Another important factor to take into account is taxation. Cryptocurrencies can receive a wide range of tax treatment, so it's critical to understand how they're categorized for tax purposes in your jurisdiction. 

Cryptocurrencies may be viewed as a form of money or property in some nations, while others treat them as assets subject to capital gains tax. The tax obligations for people and companies involved in cryptocurrency mining, trading, or investment may also vary.

Users must seek professional guidance from legal and tax experts who are knowledgeable about cryptocurrencies due to the complicated and constantly changing nature of cryptocurrency regulations and tax laws. They can offer advice based on your individual situation and aid in ensuring compliance with the relevant laws and rules in your jurisdiction.

What is the future of crypto?

The prospects for cryptocurrencies seem bright. Cryptocurrencies are likely to become more integrated into a variety of aspects of our lives as technology advances and becomes more widely accepted. 

One can anticipate a greater uptake by people, organizations, and even governments, which will result in a more widespread presence. Blockchain technology developments may also address issues with scalability, security, and regulation, making cryptocurrencies more effective and user-friendly.

The potential for DeFi, NFTs, and other cutting-edge applications on blockchain platforms may help the cryptocurrency ecosystem expand even more. However, regulatory changes, market turbulence, and technological advancements will continue to influence the course of cryptocurrencies in the future.

Disclaimer: The information provided on this website is for informational purposes only and should not be considered as financial, investment, or legal advice. Cryptocurrency investments are volatile and high-risk in nature. Consult with a qualified financial advisor and/or tax professional before making any investment decisions. We are not responsible for any loss incurred due to the use of information on this website. Do your own research and exercise caution. Don’t invest unless you’re prepared to lose all the money you invest.

Frequently Asked Questions

What is cryptocurrency?

Cryptocurrency is another name for a digital form of money, used for completing different kinds of peer-to-peer transactions.

What are the benefits of cryptocurrency? 

Benefits of cryptocurrencies appear in the form of increased security, decentralization, low transaction costs, and enhanced speed of their processing. 

How is a cryptocurrency created? 

The process differs from one cryptocurrency to another. The most popular cryptocurrency, Bitcoin, is created via proof-of-work-mining - a computing activity that requires a lot of power.

What are the risks of using cryptocurrencies? 

Holding and using cryptocurrencies is associated with different risks including hacking attacks, and breaches of your security on popular crypto and BTC exchanges. This emphasizes the importance of the protection of your funds by using private wallets.