Business Intelligence

How has Blockchain changed our world?

Graphic shows a laptop sub-connected to databases symbolizing blockchain

Blockchain's popularity is growing every day. The technology has been considered a harbinger of the coming digital revolution almost since its birth in 2009. The innovative data storage system is expected to be a breakthrough that, over time, will significantly transform our daily lives and change the way many industries operate. According to forecasts by experts (including: from MarketsandMarkets), the value of the global blockchain market is expected to exceed at least $20 billion by 2025. Can such power change the world? Or has it already done so?

What is Blockchain?

Imagine a huge ledger, large enough to record all the financial transactions made on the Internet. To serve its purpose, it would have to be huge, and it would be essentially impossible to use quickly. The obvious solution would seem to be to move all the information to one or more servers. In this case, however, all it takes is a technical failure or an external attack to lose access to the data, or the data in general. This is when Blockchain - also known as blockchain - comes into action. This technology deals with the storage and transmission of information about financial transactions made on the Internet. This system records information in databases arranged in the form of interconnected blocks. When one block is filled with a certain amount of information, a new block linked to the previous ones is created, ensuring continuity of data - thus creating an inviolable chain.

Strengths and weaknesses of Blockchain technology

The potential hidden in the development and opportunities of Blockchain is enormous. More and more industries are choosing to use the system, significantly simplifying financial transactions. The technology, like any other, has its advantages and disadvantages, which are worth bearing in mind.

Advantages of Blockchain technology

The use of Blockchain technology guarantees many benefits. Some of the key advantages of the system include: decentralization, cost reduction, increased accuracy and efficiency, and transaction security.


Blockchain allows the creation of databases without the need for extensive infrastructure. The system does not require a mainframe or numerous servers, as all data travels between multiple devices on the network and exists in multiple copies of databases.


Because of the way the data is stored and how the blockchain works, the data in it is much more secure. Blockchain is based on the dispersion of data - it is located in numerous copies of databases, not just in one place. In this way, databases are less susceptible to technical failures and internal attacks. In addition, storing data in interrelated blocks makes editing and deleting transactions more difficult - trying to make a change in one block would require making the change in every previous part of the chain. Any action on the information is also recorded, making it easy to track.

Transparency of data

The way data is stored and transmitted using Blockchain technology guarantees high data transparency. The blocks on the chain allow easy access to the data by any user of the network.

Lack of centralization

The main advantage of Blockchain technology is its decentralization. All financial transaction data is transferred between thousands or even millions of devices that are part of a distributed network of nodes. This allows the entire system to function without a central infrastructure in the form of, among other things: a mainframe computer. From the decentralization of the system come other advantages - increased and easier access and a higher level of security.


The strength of Blockchain technology is its stability. Data stored on a blockchain is extremely difficult to modify or delete, while any tampering with the data leaves an easily traceable imprint. Attempting to change the data in one block would force changes to every subsequent block. This makes Blockchain a great technology for storing data and keeping it transparent.

Disadvantages of Blockchain technology

Blockchain technology, despite its many advantages, also has its drawbacks. Among them are: energy consumption, low efficiency and the inability to modify once entered data.

Energy intensity

Among the disadvantages of Blockchain technology is its energy intensity. The functioning of the system requires high computing power and specialized equipment that consumes large amounts of energy. However, it is worth remembering that Blockchain technology is constantly making changes and improvements aimed at improving the functioning of systems - including the creation of a mode of operation requiring less energy.

No possibility of data modification

This is one of the main drawbacks of systems using Blockchain technology. Data arranged in interconnected blocks is difficult to delete or edit. On the one hand, this guarantees great transparency of content, but on the other hand, the system severely punishes mistakes. If incorrect data is entered into the system, it is almost impossible to modify it.

Low productivity

Blockchain, despite its potential to revolutionize financial transactions, is still a low-performance technology. Blockchain-based systems consume a lot of energy and computing power, while being able to perform a limited number of transactions per second.


An obstacle to the smooth implementation and operation of Blockchain technology is regulation. Blockchain is a global technology that has a clear impact on the development and operation of many industries. The introduction of systems based on Blockchain technology requires compliance with the regulations of individual countries. The development of the technology is also forcing changes to existing consumer protection systems.

Application of Blockchain technology

The numerous advantages and the revolutionary nature of the solutions have made Blockchain technology increasingly popular. Eagerly used, it began to influence numerous industries, slowly changing the face of the world. The blockchain has found its application not only in finance and banking, but also in transportation, real estate and the health care system.

Storage of information

The main application of Blockchain technology is the storage of information. The system, based on a chain of consecutive blocks, allows storing large amounts of information while guaranteeing high transparency of content, easy access and a high level of data security.


Easy and transparent transfer of financial transaction information has found its application in the energy industry, among others. Using Blockchain technology in the energy sector allows for a significant streamlining of commercial transactions, so that the costs associated with distribution are reduced. As a result, the final price of energy itself changes.

Real Estate

Financial transactions related to the sale or purchase of a building mean a lot of paperwork. The introduction of Blockchain technology in the real estate sector guarantees a significant simplification of all paperwork related to financial transactions. Blockchain allows easy storage of documentation (contracts, deeds and other necessary data). Blockchain technology makes it possible to create virtual contracts, which are concluded automatically after the parties to the transaction meet all the required conditions.


Banking is showing the greatest interest in Blockchain technology. For the financial sector, Blockchain is first and foremost a safer, faster and cheaper way to make financial transactions. By storing and transmitting information via the blockchain, customers can be assured that data important to them will not be modified, lost or deleted. Blockchain technology also allows remote signing of documents and simplifies transactions by bypassing intermediaries.

Health care

Blockchain technology has also found applications in healthcare. The introduction of a blockchain-based system guarantees easy access to patient medical records and the maintenance of transparent databases related to clinical trials. Thanks to Blockchain technology, patient data is safe, and the work of doctors and specialists is facilitated.


The transportation and logistics industry can also take advantage of the benefits of Blockchain technology. Among other things, the system allows the creation of driver registers or the collection of data on vehicle history. Another convenience is, among other things, the ability to rent a car without involving intermediaries in the process. Blockchain also makes it possible to speed up the flow of information between participants in the supply chain, thereby increasing its efficiency.


The advantages of Blockchain technology make it possible to create a perfect voting system for elections. The high level of security offered by Blockchain prevents the falsification of results and facilitates the counting of votes. Blockchains can also find applications in politics and administration beyond the elections themselves. Blockchain would allow for greater efficiency in many activities: making records, collecting contributions and taxes, or issuing property deeds.


Blockchain technology has great potential and conditions to revolutionize many sectors of the economy. Systems that use blockchain to transfer and collect data offer numerous benefits and even more application possibilities. Institutions and companies that choose to use Blockchain technology streamline their operating processes, guarantee a high level of security for customers, and in many cases save time and money. Blockchain is slowly changing our world, among other things: offering convenience and high quality financial transactions. At the same time, the technology itself is changing, trying to mitigate its weaknesses.