What is Blockchain Technology? How does it work?

After all, what is Blockchain? Recently, Bitcoin has been in the headlines for a long time. Today you will get to know everything about it.

Friends, technology had gone a long way in today's time, there was a time that if we had to send money to someone, then we used to take 1-2 days for that, and then we used to get the money from the bank, or we Sent someone.
Everyone nowadays will be seen talking about Bitcoin, Digital Currency, Dogecoin and Blockchain Technology. But the biggest question is whether every other speaker and listener knows the meaning of blockchain.
Today we are going to tell you about what is Blockchain Technology, and how it can change a lot in the coming time. So let's know about Blockchain technology.But now with the help of UPI, everything has become very easy. Now in Minto, we can transfer money online to anyone at any time with the help of UPI. So now you can think that how technology has advanced so far.Often we do not miss to play on the term by talking about it, whether we are deeply aware of it or not. Well, we will make sure that after reading this news, after hearing the name of blockchain, you can not only react to it but also analyze it.

What is Blockchain Technology?

What is Blockchain Technology? How does it work?

Blockchain Technology is such a technology, a platform where not only a digital currency but also anything can be made digital and its record can be kept. That is, blockchain is a digital ledger. At the same time, bitcoin is a digital medium, through which we and you or anyone else can sell and buy some things.

Blockchain technology is a structure that holds public block records in multiple databases, known as "chains", in a network connected via peer-to-peer nodes. Commonly, this storage is called a 'digital ledger'.

Blockchain technology is quite old, but it was theorized to be used by Satoshi Nakamoto for the cryptocurrency Bitcoin in 2009. Who Yoshi Nakamoto is a mystery? He published a paper about Digital Currency based on Blockchain.

Advantages of Blockchain

With blockchain, your business process will be better protected with the help of a high level of security. The chances of hacking your business are very less.

Blockchain is a technology that is designed as a program to record financial transactions. It is a digital system in which Internet technology is very tightly embedded.

Thanks to the blockchain, the system becomes difficult to hack. Even if a single block has been tampered with, it will be known that the hacker is hacking the system. If a hacker wants to hack the system then he has to catch all the blocks, which is impossible.

Each computer on the blockchain can describe the entire history of each record. This database is encrypted. In the blockchain system, even if a computer fails, this system continues to work. Whenever new records are to be entered in it, it requires the approval of many computers.

A blockchain system is a digital ledger of transactions with a network of computer systems and servers. Transactions done in all blocks are captured and each new transaction is included in the ledger.

In this way the database is managed by multiple participants. The system uses a hash cryptographic signature to record each transaction and includes each new block created in the block. In such a situation, if someone wants to hack it, then it is difficult to hack it.

What happens in each block of the blockchain?

As the name suggests, so is the work. It consists of many blocks and they are connected – that's how it became a blockchain. Each block contains the data, the hash and the hash of the previous block. Now let us tell you about the data, the hash and the hash of the previous block.

The data that resides in the Bitcoin blockchain contains the details of the transaction. Information like sender, receiver and account are recorded in it.

The number comes after the data of the hash. You can think of a hash as a biometric which is unique for everyone. Your Face ID can't match anyone else's, similarly, this hash is also unique

, If there is any change in the block, it changes the hash.

All the blocks are virtually connected. This is a kind of system in which there is no scope for tampering. Because if anyone wants, the information of the blockchain cannot be changed.

Hash of the previous block – A block also contains the hash of the previous block and because of this, the chain of blocks is formed. That is, they are related to each other.

If you change the data in one block, then you will have to change the data in the other block as well. If this is not done, then the blocks cannot remain connected among themselves. It is not possible in a way that you can change the data from all the blocks around the world. But hackers can do anything.

What is the technology behind Blockchain Technology?

The main technologies behind Blockchain Technology mainly consist of the following three technologies.

  • P2P Network (Peer-2-Peer)
  • Private Key Cryptography
  • Program (the blockchain's protocol)

Where can Blockchain be used?

Blockchain technology can be used in the following areas apart from crypto-currencies.

  • cyber security
  • e-governance
  • Information Technology and Data Management
  • Government Schemes Accounts
  • subsidy distribution
  • Banking and Insurance
  • land records regulation
  • academic information
  • Digital identity and authentication
  • health statistics
  • cloud storage
  • smart contract
  • keeping legal papers

How Secure is Blockchain?

Control in Blockchain is not with one, that is, the risk is less. The bank invests your money in the market and earns money. If the government wants, then the 2000 note kept in your hand will become invalid. For all these reasons, the idea of ​​blockchain-based Bitcoin was published by Satoshi Nakamoto.

The record of transactions done in Bitcoin goes to millions of computers, not a single pass, and it is encrypted. Like a bank has the data of all its customers. That is, how much money is in which person's account. But when it comes to Bitcoin, this is not the case here in the blockchain. Here no one has everyone's details, but everyone has everyone's details.

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 have to be hacked, so hacking is not such an easy thing that anyone can do this technology. For this, a lot of knowledge is required.

What are the advantages and disadvantages of Blockchain?

Once the data is saved in it, it is difficult to make any changes or tamper with it. Cryptography Encoded Technology is used to keep Digital Ledger safe. Blockchain solves the problem of manipulation. This brings everything to the level of their highest degree of accountability.

Data that is once entered into the blockchain become immutable, and can no longer be changed in any way, which reduces the chances of fraud to a great extent.


Hopefully, by now you must have understood Blockchain, what is Blockchain Technology? How Blockchain Works. Also the difference between bitcoin and blockchain.