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What is Blockchain: Everything you need to know (2022)

If you want to pay online, you must register an account and provide credit card information. If you don’t have a credit card, you can pay by bank transfer. With the rise of cryptocurrencies, these methods may become obsolete.

Imagine a world where you can make transactions and many other things without having to give your personal information. A world where you no longer need to rely on banks or governments. Sounds amazing, right? That is exactly what blockchain technology allows us to do.

It’s like your computer’s hard drive. Blockchain is a technology that allows you to store data in digital blocks, which are connected to each other like links in a chain.

Blockchain technology was originally invented in 1991 by two mathematicians, Stuart Haber and W. Scot Stornetta. They first proposed the system to ensure that timestamps could not be altered.

A few years later, in 1998, software developer Nick Szabo proposed using a similar type of technology to secure a digital payment system that he called “Bit Gold.” However, this innovation was not adopted until Satoshi Nakamoto claimed to have invented the first Blockchain and Bitcoin.

So what is the blockchain?

A blockchain is a distributed database shared between the nodes of a computer network. Save the information in digital format. Many people first heard about blockchain technology when they started searching for information about bitcoin.

Blockchain is used in cryptocurrency systems to ensure secure and decentralized transaction records.

Blockchain allowed people to ensure the fidelity and security of a data record without the need for a third party to guarantee accuracy.

To understand how a blockchain works, consider these basic steps:

  • Blockchain collects information in “blocks”.
  • A block has a storage capacity, and once it is used up, it can be closed and linked to a previously served block.
  • The blocks form chains, which are called “Blockchains”.
  • More information will be added to the block with more content until its capacity is reached. The process is repeated.
  • Each block in the chain has an exact timestamp and cannot be changed.

Let’s know more about the blockchain.

How does the blockchain work?

Blockchain records digital information and distributes it through the network without changing it. Information is distributed among many users and stored in a permanent, immutable ledger that cannot be changed or destroyed. That is why blockchain is also called “Distributed Ledger Technology” or DLT.

Is that how it works:

  • Someone or a computer will transact
  • The transaction is transmitted through the network.
  • A network of computers can confirm the transaction.
  • When confirmed, a transaction is added to a block.
  • The blocks are linked together to create a story.

And that’s the beauty of it! The process may seem complicated, but it is done in minutes with modern technology. And because technology is advancing rapidly, I expect things to move even faster than ever.

  • A new transaction is added to the system and then transmitted to a network of computers located around the world. Computers then solve equations to ensure the authenticity of the transaction.
  • Once a transaction is confirmed, it is placed in a block after confirmation. All blocks are chained to create a permanent history of each transaction.

How are blockchains used?

Although blockchain is an integral part of cryptocurrency, it has other applications. For example, the blockchain can be used to store reliable data about transactions. Many people confuse blockchain with cryptocurrencies like bitcoin and ethereum.

Blockchain is already being adopted by some big-name companies, including Walmart, AIG, Siemens, Pfizer, and Unilever. For example, IBM’s Food Trust uses blockchain to track the journey of food before reaching its final destination.

Although some of you may consider this practice excessive, food suppliers and manufacturers adhere to the policy of tracking their products because bacteria such as E. coli and Salmonella have been found in packaged foods. In addition, there have been isolated cases where dangerous allergens such as peanuts have been accidentally introduced into certain products.

Tracking down and identifying the sources of an outbreak is a challenging task that can take months or years. However, thanks to Blockchain, companies now know exactly where their food has been, so they can track its location and prevent future outbreaks.

Blockchain technology allows systems to react much faster in case of danger. It also has many other uses in the modern world.

What is blockchain decentralization?

Blockchain technology is secure, even if it is public. People can access technology through an Internet connection.

Have you ever been in a situation where you had all your data stored in one place and that secure place was compromised? Wouldn’t it be great if there was a way to prevent your data from being leaked even when the security of your storage systems is compromised?

Blockchain technology provides a way around this situation by using multiple computers in different locations to store information about transactions. If one computer experiences problems with a transaction, it will not affect the other nodes.

Instead, other nodes will use the correct information to cross-reference your incorrect node. This is called “decentralization”, which means that all information is stored in multiple places.

Blockchain guarantees the authenticity of your data, not only its accuracy, but also its irreversibility. It can also be used to store data that is difficult to record, such as legal contracts, state IDs, or a company’s product inventory.

Blockchain pros and cons

Blockchain has many advantages and disadvantages.


  • Accuracy is increased because there is no human involvement in the verification process.
  • One of the best things about decentralization is that it makes information more difficult to manipulate.
  • Secure, private and easy transactions
  • Provides a banking alternative and secure storage of personal information


  • Data storage has limits.
  • Regulations are always changing as they differ from place to place.
  • It is at risk of being used for illicit activities

Blockchain FAQ

I will answer the most frequently asked questions about blockchain in this section.

Is Blockchain a Cryptocurrency?

Blockchain is not a cryptocurrency, but rather a technology that makes cryptocurrencies possible. It’s a digital ledger that seamlessly records every transaction.

Is it possible to hack Blockchain?

Yes, in theory, the blockchain can be hacked, but it is a difficult task to achieve. It is constantly checked by a network of users, making it difficult to hack the blockchain.

What is the most prominent blockchain company?

Coinbase Global is currently the largest blockchain company in the world. The company runs commendable infrastructure, services, and technology for the digital currency economy.

Who owns the blockchain?

Blockchain is a decentralized technology. It is a chain of distributed registers connected with nodes. Each node can be any electronic device. Therefore, one owns blockchain.

What is the difference between Bitcoin and Blockchain technology?

Bitcoin is a cryptocurrency, which is powered by Blockchain technology while Blockchain is a distributed ledger of cryptocurrencies.

What is the difference between Blockchain and a database?

In general, a database is a collection of data that can be stored and organized by a database management system. People who have access to the database can view or edit the information stored there. Client-server network architecture is used to implement databases. While a blockchain is a growing list of records, called blocks, stored in a distributed system, each block contains a cryptographic hash of the previous block, timestamp, and transaction information. Modification of data is not allowed due to the design of the blockchain. The technology enables decentralized control and eliminates the risks of data modification by third parties.

ending saying

Blockchain has a wide spectrum of applications, and in the next 5-10 years we will likely see it integrated into all kinds of industries. From finance to healthcare, blockchain could revolutionize the way we store and share data. Although there are some doubts about the adoption of blockchain systems at the moment, that will not be the case in 2022-2023 (and even less so in 2026). Once people become more comfortable with the technology and understand how it can work for them, owners, CEOs, and entrepreneurs alike will quickly harness blockchain technology to their advantage. I hope you like this article, if you have any questions let me know in the comment section.



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