What is Blockchain Technology and bitcoin best guide 2023

23 Min Read

What is Blockchain (What is Blockchain Technology). Recently, Bitcoin has been in the headlines for a long time. There has been a lot of hope among people about bitcoin because the price of bitcoin is increasing day by day.

But do you want to know what is the technology behind Bitcoin? If yes, then you will definitely like what this Post Blockchain technology is. Because Bitcoin is related to Blockchain, so you have to know about Blockchain, how it works.

Now the question arises that do you know what is Blockchain Technology? Why is it important to know about it?

Blockchain technology is about to transform our IT industry the way open-source software did a decade ago. And just as Linux has been the core of modern application development for almost a decade, Blockchain is also going to be a great way to share information in the coming times, and which will be low cost and very easy to implement. Can be done between open and private networks.

But a lot of hype was generated about Blockchain technology, because they felt that it can completely change our future technology. This thing is also true to a large extent, but speaking like this will not make sense, rather we have to understand Blockchain technology completely, think about its different aspects, somewhere else we can think of it to be better than Mahjuda technology. can speak.

It is true that the pace of adoption of Blockchain is very slow, but technology experts believe that this speed is going to increase gradually in the coming time, which is a good news for us. In future this technology is going to change the whole world.

That’s why today I thought that why not provide complete information about this new Blockchain technology to you people so that you will be able to understand it easily. Then without delay let’s start and let’s understand what is Blockchain.

What is blockchain technology

Blockchain is a digital ledger. But do you know what a ledger is? Ledger is a book that maintains such accounts where debits and credits transactions are posted from the book where the original entry is. Or just say that the entries from the original book are updated in this ledger. We can say that a blockchain is digitized, decentralized, public ledger.

blockchain bitcoin

Understand Blockchain Technology in simple words

Let’s say you have a file of transactions (a “node”) on your computer (a “ledger”). Two government accountants (which we call “miners”) also have the same file in their system (hence they are “distributed”). As soon as you make a transaction, your computer e-mails both of those accountants to inform them.

Every accountant wants to first check whether you can afford it or not (and in return they can get their salary which is “Bitcoins” or not).

Whichever of these two checks first and finally validates it and presses “REPLY ALL”, while with this he also attaches his logic to verify that transaction and it is called “Proof of Work”. is called.

If in the meantime, if that second accountant also agrees, then everyone updates their files of transactions. This whole process or concept is called “Blockchain” technology.

Therefore blockchain is such an incorruptible digital ledger of transactions that is programmed to record virtually everything. All the list of records which are in the blockchain is called “block”. Therefore this blockchain is always a continuously growing list of records which are linked and secured.

Who Invented Blockchain Technology?

Blockchain technology was invented by Satoshi Nakamoto in 2008 so that he could do it in the cryptocurrency bitcoin, according to his public transaction ledger.

The main objective of Satoshi Nakamoto behind doing all this was that he wanted to create a decentralized Bitcoin ledger—the blockchain—that gives people the ability to control their money so that no third party, or anyone The government, too, could not access or monitor this money.

Satoshi, the creator of Bitcoin, suddenly disappeared in the year 2011, leaving behind this open source software that Bitcoin users can use and update and improve.

Many believe that this is not a person named Satoshi Nakamota, it is just a fictional character. By the way, the correct information is not available from anyone about its veracity.

The invention of blockchain for bitcoin is the first digital currency that can solve the double spending problem without the help of any trusted central authority or central server. That’s why this Blockchain Technology has also been the inspiration for many other applications.

Why should we know about Blockchain?

There are three main reasons why we should know about Blockchain:


1. There is no need for Blockchain technology to exist publicly. It can also exist privately – where nodes will simply point into a single private network and the Blockchain will act as a distributed ledger.

Financial institutions are under a lot of pressure as they have to demonstrate regulatory compliance and hence many institutions are doing Blockchain implementations. Secure solutions such as Blockchain can become a huge and important building block to reduce compliance costs.

2. Block-chain technology has more reach than finance. It can be applied in any multi-step transaction where traceability and visibility is required. Supply chain is a notable case where Blockchain can be used to manage leverage and to audit sign contracts and product provenance.

Along with this, it can also be used in voting platforms, for titles and deed management. As the digital and physical worlds are converging, the practical applications of Blockchain are also increasing slowly.

3. The exponential and disruptive growth of Blockchain can only come when public and private Blockchains converge together in an ecosystem where firms, customers and suppliers can collaborate together in a secure, auditable and virtual way.

How Secure is Blockchain?

In this way, nothing on the internet is secure. On the other hand, if we talk about Blockchain technology, then it is “unhackable” to a great extent in comparison to the rest of the technology. To do any transaction in Blockchain, all the nodes of the entire network will have to agree, only then that transaction will be valid. Here no single entity can say whether the transaction has taken place or not.

To hack it, you will not have to hack only one system like a bank, but all the systems located in the whole network will have to be hacked, so hacking is not such an easy thing in this technology.

The computing resources of almost all blockchains are tremendous because there is not a single computer here, but there are many computers connected in the network.

Email was for the Internet like Bitcoin was for Blockchain

In the 1990s, when internet technology (TCP/IP or HTTP) was in its native stages, email was a very large and first major application then. But later new applications like web browsers came. Websites then became very popular.

People then used a lot of chat software such as Skype. If we consider about now, then you can see many different applications running in your mobile, which use the Internet.

Similarly, when blockchain technology came a new time, bitcoin was also the first major major application like email which used this technology. Other cryptocurrencies followed this trend later. Now blockchain technology is used in many applications such as security, online voting etc.

Internet Technology vs Blockchain Technology

If we talk about both technology, then Internet allows computers to exchange information; Whereas Blockchain allows computers to record information.

Both use many computers (nodes).
Let’s know something new about Internet and Blockchain.

The first generation of Digital Revolution brought us the Internet of Information. Whereas the second generation — which is powered by blockchain technology — presented us with the Internet of Value: a new platform that will reshape the world of business and make the old order of human affairs even better.

Blockchain is such a vast, global distributed ledger and database which is running continuously in millions of devices and it is open to anyone, here not only information but anything which has some value like money, titles, deeds, identities , even votes — these can be moved, stored and managed securely and privately.

Here mass collaboration is needed to establish trust and some clever code to implement it, whereas in the old ways, powerful intermediaries such as governments and banks are needed.

That’s why we can say that Blockchain technology is made by us, works for us and we control it, which makes it very secure and reliable.

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The Technology Behind Blockchain Technology

The main technology behind Blockchain are mainly the three technologies given below.
1. Private Key Cryptography
2. P2P Network (Peer-2-Peer)
3. Program (the blockchain’s protocol)

Why do we need blockchain technology?

Blockchain is such a mechanism that helps all of us to reach their highest degree of accountability. Now there will be no more missed transactions, human and machine errors will be reduced, no third party or government consent is necessary behind all these transactions, but only trust or secure validation of all connected nodes matters.

The most critical area where Blockchain helps us and it guarantees the validity of a transaction by recording them, this is not being done in just one main register but the registers of all the distributed systems connected in the network, in all these registers. Transaction will be called valid only after there is secure validation.

The applications of Blockchain technology in the future in the following areas-

1. Smart contracts – Any industry, if it heavily depends on contracts, such as insurance, financial institutions, real estate, construction, entertainment, and law, all those industries will be benefitted from this technology.

Because with the help of this technology all your contracts can be updated, managed, tracked and secured without any dispute. Smart contracts, those that are embedded with if/then statements and do not require the involvement of an intermediary party to execute.

2. Supply chain management – ​​Blockchain is a very good option to manage all these processes whenever the value changes or the status of an asset changes.

3. Asset protection – Whether you are a musician who wants to get the royalties of your songs properly or you are a property owner, if you want to protect your assets then blockchain technology can help you a lot in your real-time By creating an indisputable record of ownership.

4. Personal Identification – Governments often manage a lot of data such as personal data from birth to death records, marriage certificates, passports and census data etc. Blockchain technology can easily manage all these data according to the streamlined solution and can store them securely.

5. Payment processing – The specialty of Blockchain is that it can easily handle the payment processing of any big company. This can completely eliminate the need for intermediaries that we often see in payment processing.

6. Crowdfunding – Compared to traditional crowdfunding, a blockchain powered crowdfunding campaign has a more secure investment from an interested community for a new project. But in such an instance, the funding will be mainly in the form of bitcoin or other cryptocurrencies.

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Real-life Applications of Blockchain Technology

Now you must have understood the basic concept of this technology, so let us now know where they are used in real-life applications.

1. Follow My Vote: It wants to change the way we vote and become the first open-source online voting solution in the world.

2. Arcade City:– This is a true decentralized ridesharing service which is also known as ‘Uber killer’.

3. ShoCard: – It stores your identity in Bitcoin’s blockchain so that you can be easily verified.

4. Symbiont: – It provides better smart securities in Blockchain.

5. Bitnation: This is a “Governance 2.0” initiative which seeks to establish DoItYourself governance by working with a collaborative platform.

6. ChainLink: It uses blockchain technology to verify and validate the authenticity and title of real-world items.

What is Public and Private Blockchains and what is the difference between them

Although there are many varieties of Blockchain, but all of them mainly fall in two categories – public or private. Public blockchains allow anyone to view and send transactions as long as they are part of this consensus process.

These are also consortium blockchains, where only certain pre-selected numbers of nodes are authorized to use the ledger. For example, a group of banks and their clearinghouses use blockchain as a part of trade-clearing, where each node is associated with some step in the verification process.

In private blockchains, in contrast, a distributed ledger puts restrictions in writing to any group of employees who work in that organization. Along with this, there are other restrictions in it.

In addition, the blockchain – due to its self-policing security – eliminates a large amount of existing record keeping, which becomes very confusing later when multiple parties are involved in the same transaction.

Blockchain Technology – Its Opportunities and Advantages

  • This blockchain helps our smart devices to communicate with each other so that they can communicate better.
  • Blockchain solves the problem of manipulation. This brings everything to the level of their highest degree of accountability.
  • Makes online identity and reputation decentralized. So that we can own our data ourselves.
  • Cryptocurrencies distribute the ability to control the value of currencies from the hands of the government to the general public, so that now no one will have a hand over the value of currencies.
  • In an informal economy, the blockchain protects us from the middleman so that the asset can be exchanged easily and freely.
  • With the help of Blockchain technology, many issues related to freedom, jurisdiction, censorship, and regulation can be addressed correctly and smoothly.
  • With blockchain-based systems, there is no need to keep any more intermediaries, but records and transfer of assets can be taken care of easily. Due to which the transaction speed increases.
  • Data once entered in the blockchain become immutable, which can no longer be changed in any way, which reduces the chances of fraud to a great extent. Apart from this, the transactions are very clear which can be easily investigated and audited later.

Blockchain Technology – Its Criticisms and Challenges

Blockchain technology has many advantages, but still it also has some drawbacks about which let’s know.

Requires a lot of power: The operation of these blockchains requires a lot of computing power, due to which the need for electricity is very high. If we look at the situation of today’s climate change, then it is not so easy in favor of any developing country because they have their own needs too. That’s why it is true only for developed nations.

Security of private key: This private key should always be kept secret because if third parties come to know about them, then it is such a thing that you have given control of all your bitcoin in their hands. Apart from this, the private key should be backed up and protected from accidental loss, because if it is lost once then no one else can recover these funds and they will be lost forever.

Transaction speed: Transaction speed can also become a problem. Because we know that verifying the blocks in the chain is very important for the security of the distributed network and it takes a lot of time to do so.

My opinion about Blockchain

Blockchain can become a very important part of our financial and technological digital future. This ‘blockchain’ technology which lies behind bitcoin, has proved so far how big this technology is and it has the potential to create a new world of technology.

This in itself is a big thing like the internet. This is such a wave of innovation that can keep common people like us away from these financial complexities. With this, it can free us to exchange goods and services with anyone in the whole world so that we will not have to go through these other corporate intermediaries.

It can radically decentralize our entire society and save us from banks, governments, even companies and politicians. This in itself can bring a huge digital revolution. We just need to understand it and understand it and explain it to others.

Future of Blockchain

By now you must have understood that what is the usefulness of Blockchain and how it can be used in all our work. Our thinking about this information has been changed, how and where information can be stored, who can access this information and what can we do with this information.

Which is the main reason some organizations are against it because how blockchain organizes information and maintains our records-keeping infrastructure goes to the heart of these things.

It is clear from this that people will not accept Blockchain technology so easily and it is not going to come overnight because it challenges traditional technology at every step.

We had seen a similar case in TCP / IP, which was initially criticized a lot but later it took about 30 years to implement it, but finally everyone understood its importance. In the same way, the world is still taking time to understand Blockchain, but in a few years it will definitely be adopted.

Which country’s currency is bitcoin?

Bitcoin is currently the currency of El Salvador. This is the first country that has given legal status to this currency. It is also the first country to adopt bitcoin as its country’s currency. In El Salvador, the US dollar will continue to be the legal currency as before.

FAQ (Frequently Asked Questioned)

What is blockchain technology used for?

Blockchain technology enables a decentralized peer-to-peer network for organizations or apps like Airbnb and Uber. It allows people to pay for things like toll fees, parking, etc.

What is blockchain technology with example?

Blockchain defined: Blockchain is a shared, immutable ledger that facilitates the process of recording transactions and tracking assets in a business network.

Who owns a blockchain?

Nobody owns blockchain technology, and yet, everybody owns it. That is one of the unique features of blockchain tech, and this collective ownership and accountability is what makes blockchains very secure and immutable.

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