Cryptocurrencies have evolved significantly from being perceived as online scams, as was the case with Bitcoin in its early days, to now holding a place in the ETF portfolios of BlackRock and other significant investment funds. All of this makes them an essential part of the modern economic and financial system today. The number of projects has grown from 8,000 to an astonishing 15,500,000 in the past four years, indicating a significant surge in interest in this digital asset. However, most of these currencies have no real utility or significance. That is why we’ve decided to dedicate this article to explaining what cryptocurrencies are and how they work.
What Are Cryptocurrencies?
Cryptocurrencies are digital or virtual currencies that use cryptography to ensure the integrity and security of transactions. Unlike traditional payment systems, such as the euro or dollar, which are issued by central banks and subject to government control, cryptocurrencies operate independently of any government or financial institution. They rely on technology that enables peer-to-peer transactions, automatically eliminating all intermediaries, which is undoubtedly their main advantage.
The first cryptocurrency, Bitcoin, was created in 2009 by an anonymous author using the pseudonym Satoshi Nakamoto. Over the years, Bitcoin has undergone numerous phases of development and challenges. Yet thanks to its resistance to inflation, security, and the potential for anonymous use, it has earned the trust of investors. As a result, since January 2024, the Bitcoin ETF has been included in the offerings of many investment banks, led by BlackRock.
Today, cryptocurrencies represent much more than just a financial system. Their use has expanded into technology, video games, and, through the development of NFTs, into the art world. For this reason, the increasingly frequent talk of connecting “real-world assets” with blockchain technology is not surprising.
How Do Cryptocurrencies Work?
As mentioned at the beginning of this article, blockchain technology is the foundation of all cryptocurrencies. As the name suggests, blockchain is a chain of blocks, with each block containing transaction data that cannot be deleted or altered. This transparency of the network and transactions is one of the core principles of crypto. Additionally, the entire process is automated. Another advantage is that no central institution can control the network in any way. This system design also ensures security, which is why crypto and blockchain are a true revolution in online payment methods.
Although the emergence of cryptocurrencies was initially tied exclusively to mining (Proof of Work), new consensus models have appeared that offer a different approach to maintaining the network over time. One of the most well-known is proof-of-stake (PoS). These users “lock up” their cryptocurrencies as collateral, thereby helping to ensure the network’s success and security. In return, they receive a certain amount of currency as a reward. This model significantly reduces energy consumption compared to traditional mining, representing a significant step toward sustainability. A notable example of this transition is Ethereum, one of the largest and most influential cryptocurrencies, which recently completed its shift from Proof-of-Work (PoW) to Proof-of-Stake (PoS). Nevertheless, among experienced and long-time crypto enthusiasts, mining still represents the foundation on which many cryptocurrencies were created and developed. In our opinion, it will take a considerable amount of time for them to adopt PoS fully.
Types of Cryptocurrencies
Cryptocurrencies can be classified according to various criteria. Today, we will present the most important categories with detailed explanations below.
1. Based on the Method of Creation:
- Proof of Work (PoW) – Cryptocurrencies are created through mining, requiring significant computing power to solve complex mathematical problems. This mechanism ensures network security, but also consumes a lot of energy. Naturally, the most well-known example of a PoW currency is Bitcoin.
- Proof of Stake (PoS) – Cryptocurrencies are generated by locking existing ones. Precisely, new blocks are validated based on the number of tokens participants stake in the network. The more tokens a participant has, the greater the chance of being selected for validation and receiving a reward.
- Premined/Fixed Supply – The entire token supply is released or distributed at launch. Usually, these are meme tokens without real utility, such as Dogecoin, PEPE, or Shiba Inu.
2. Based on the Blockchain Layer and Role in the Network:
- Layer 1 Tokens– These are tokens of projects representing the main blockchains on which the entire ecosystem is built, such as Bitcoin, Ethereum, or Solana. They have their own consensus mechanism and function as the foundation for applications and tokens.
- Layer 2 – Cryptocurrencies that operate as an upgrade to existing Layer 1 networks, primarily for scalability and faster transaction execution. They are most commonly found on the Ethereum network and serve to reduce transaction costs. The most well-known examples are Polygon, Arbitrum, and Optimism.
3. Based on Stability and Value:
- Stablecoins – These cryptocurrencies aim to maintain a stable value because they are pegged to traditional assets, such as the US dollar (e.g., USDT, USDC). Their value is always 1 USD, and most users convert their profits from traditional currencies into stablecoins.
- Classic Cryptocurrencies – These are all cryptocurrencies that are not stable. Their value is freely determined by the market through supply and demand.
4. Based on functionality:
- AI cryptocurrencies – These cryptocurrencies are linked to projects using artificial intelligence. Given that this field of computer science is constantly expanding, it’s no surprise that this type of token is gaining increasing popularity.
- RWA (Real-World Assets) Tokens – Cryptocurrencies connected to real, physical assets such as real estate, stocks, or commodities. Their goal is to bridge traditional economics and blockchain by enabling the tokenization of real-world assets. Although the idea is excellent, we believe it will still take some time before blockchain technology can be fully implemented in the real world.
- Meme coins – These are tokens without purpose or utility, often originating from popular internet jokes or memes. They are known for even higher volatility than classic cryptocurrencies, and their strength largely depends on the power of the community.
- DeFi tokens – These tokens are used in the decentralized financial ecosystem for lending, exchanges, and saving. Although they do not attract as much attention as the aforementioned tokens, they represent the foundation of the blockchain and are, therefore, essential.
- Gaming and metaverse coins – These are coins related to online games, virtual worlds, and often NFTs. This type of token experienced major growth in the previous bull run, but unfortunately, has remained stagnant over the past four years. Because of this, gaming tokens are far below expectations in this cycle.
Advantages and Disadvantages of Cryptocurrencies
A growing number of economic experts argue that cryptocurrencies represent the future of payments. Their advantages over traditional methods are remarkable, yet there are still certain aspects that slow down their development and global adoption. In the following section, we’ll explain both sides of the coin.
Pros
| ✅ Transaction Speed | Cryptocurrency transactions can be completed within seconds, regardless of the recipient’s geographical location. This is one of the key reasons why many banking systems are exploring ways to incorporate crypto into their portfolios. |
| ✅ Low Fees | Cryptocurrencies offer drastically lower transaction fees compared to banks or traditional payment systems. In most cases, the costs are just a few cents, regardless of the amount being transferred. |
| ✅ Decentralization | Cryptocurrencies are not dependent on central institutions, which makes them less susceptible to manipulation or control by governments and banks. |
| ✅ Privacy | A significant advantage of cryptocurrencies is that they offer users a high level of privacy and anonymity. However, it’s important to note that centralized exchanges still require KYC procedures. |
Cons
| ❌ Volatility | By far the biggest drawback of cryptocurrencies is their instability, and their value can fluctuate dramatically within a short period—sometimes by more than 30% in just a few hours. |
| ❌ Regulation | Cryptocurrency trading is not fully regulated in many countries, which can create uncertainty regarding its legal status. However, judging by current global trends, it seems likely that crypto will soon be recognized worldwide. |
| ❌ Security Risks | While cryptocurrencies are secure, users can still fall victim to theft through hacking or insecure exchanges. |
Conclusion
Although they initially caused a great deal of confusion and fear among potential users, we now witness that cryptocurrencies have changed how many people perceive money and finance. Imagine if someone had told you 15 years ago that you’d be able to transfer money from your country to, for example, the USA in a matter of seconds, for just 20 cents per transaction, with the entire process being reliable, anonymous, and transparent. That’s precisely what crypto enables. Also, with the launch of crypto ETFs, it’s clear that the future looks bright for this industry.
Moreover, smart contracts and blockchain technology can be implemented beyond the financial sector. Their applications are incredibly diverse and extend even to the arts. In light of all this, cryptocurrencies undoubtedly represent the future of payments. However, while crypto offers a tempting investment opportunity, it also carries certain risks. Before investing, it’s essential to educate yourself thoroughly. Only with a solid understanding can you make smart and secure financial decisions.
Our portal offers a range of educational articles. Here you can learn not only about cryptocurrencies but also about investment strategies, leading crypto exchanges, and other essential factors that can help you make informed investment choices.
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FAQ
What is mining, and how is it performed?
Mining is, in short, the process of creating new tokens. It involves solving complex mathematical problems that confirm transactions and add new blocks to the blockchain in exchange for a reward in that cryptocurrency. Bitcoin requires specialized mining equipment, while some other coins can be mined using ordinary graphics cards.
How does staking work?
Staking is the process of locking a certain amount of cryptocurrency for a set period to reduce the total supply and simultaneously maintain the network’s security and operation. Users receive a certain amount of the tokens they stake as a reward. This mechanism is used in blockchains operating on the Proof of Stake system, with the most well-known examples being Ethereum, Cardano, and Solana.
What does cryptocurrency volatility mean?
Volatility shows how much and how quickly an asset’s value can change. Cryptocurrencies are known for high volatility, meaning their value can rise or fall by over 30% quickly. This creates the opportunity for high profits and massive losses, making the investment risk much higher than traditional financial instruments.
Is it possible to pay with cryptocurrencies in stores?
More and more stores and online services are accepting cryptocurrencies as a payment method, but regionally, this is still minimal. However, many companies offer payment cards that allow you to pay directly in any store with some of the tokens you own. Of course, these companies charge fees for their services.
How to recognize a scam in the cryptocurrency world?
If you have some experience in the crypto world, you probably already know that this market is full of scams. Even more experienced investors sometimes fall into this trap. Therefore, it is essential to thoroughly research projects before investing money in them, and we always advise our readers to follow one rule: If something sounds too good to be true, it probably isn’t.
