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Blockchain – A Game changer in the current technological realm

Reading Time: 9 minutes

Starting from corporates to millennials, everyone has been looking curious into the tech world. Now, it is time for Blockchain. Blockchain has become a buzzword in recent days. Many individuals seem to know what blockchain is, and its working. 

Let us go ahead with an example. Your friend has requested you to transfer the money to his account. Once the transaction is made, it has to be successfully updated in both the senders’ and receivers’ accounts. If you are from the banking sector, you might have known the hurdles and the workload in it. 

Apart from the workload, the transaction entries in the banking sector are easily tamperable. To avoid this problem, the blockchain enters into the scene. 

So, what is blockchain?

Blockchain is nothing but the collection of data connected with another block in chronological order. To be more specific, let us consider Google spreadsheets. When the spreadsheet has been shared worldwide, everyone has the chance of getting a copy of it. Everyone can view it but they do not have access to editing or modifying it. 

The same goes for the blockchain. Instead of rows and columns, the blockchain has interconnected blocks in it. Blocks are the sort of files that help in recording the data pertaining to the bitcoin network. The block also functions effectively in recording the bitcoin transactions that have not yet been entered in any of the blocks. You can also mention block as a ledger page or record book. 

Once the block gets completed, it gives way ahead to the other block in the blockchain. Another fascinating concept of blockchain is that, once the data has been stored in the block, it can neither be removed nor be altered.

Genesis block – First block in the Blockchain

The first block in the Blockchain is the genesis block. Due to the modern versions of bitcoin, the genesis block has been named as block o. The earlier versions of bitcoin can be counted as block 1. Genesis block actually has a special case in the blockchain. It does not refer to any previous block and thereby produces an unspendable subsidy for all the derivatives of blockchain. 

A blockchain is a record that indulges a set of bank transactions. But, a block resembles a transaction message from the bank ATM once the cash has been withdrawn or deposited. Block and blockchain relationship is a single word that describes a part to the whole. 

The block has the information of present, past, and the future. Every time when the block is completed, it becomes a past blog and the new block starts storing the information. The past block goes towards the permanent record of transactions. It can be viewed at any time but since then it cannot be edited further. On a whole, every block comprises of recent transactions. 

The blocks come under different roles. First, let us discuss the role of blocks as a public ledger followed by the working of blockchain.  

Blockchain – As a distributed ledger

Blockchain seems to be a ledger that has been spread across the network. It peers up in the network and thus each peer holds the best complete ledger.

Many blockchain users have been on its side due to its rich attributes. In comparison with the traditional ledger system, the blockchain has diverse attributes. 

Peer to peer

In the blockchain, the peer to peer end becomes the major thing. Here, there is no central authority to control or manipulate it. The peer to peer end attribute allows data exchange with third parties. 


Though the ledger has been spread across the whole network, tampering is not so easy with blockchains. 

Secured cryptographically

Whilst coming to the security point of view, cryptography has been implemented to increase the security services of the ledger. It helps in making the ledger tamper-proof. 

While coming to the cryptographical way, the blockchain has been related to the following terms.

  • Hash
  • Nonce
  • Nodes
  • Block

As block has been already discussed, let us have a clear look at the left out ones. 

How blockchains are structured?

Blockchains, as explained uses diverse methods to achieve the consensus to bring in the transactions. The largest examples of blockchain are the bitcoin concept. Bitcoin participates under an anonymous public ledger that helps everyone to participate. Many private users have got access to the permission blockchains for their transaction activity. 


A hash comes up with a panel or string of numbers and letters produced under hash functions. The hash functions take a variable number of characters. Those variable number of characters are converted into a string with fixed numbers. Even if there is a small change in the string, then it creates a new hash. Let us see it with an example. 

Input 1: Book is inside

Input 2: Book is outside

Input 3: Book is insid

Here,  input 1 and input 3 look similar except for the single character. Still, three hashes have been created. This is the procedure through which hash works. 


Nonce, which means number only used once, is the number that the blockchain miners have been expecting for. In the same tone, it is the number that has been added to the hashed block. The hashed block which when rehashed will lead to the difficulty level restrictions. 


Nodes bring in the infrastructure of the blockchain. As we all know that all nodes in the blockchain are interconnected, the transfer of blockchain data also ought to occur. The blockchain data can be stored, spread or can be preserved. So, by theory blockchain exists on nodes. In order to view the full copy of the blockchain transaction, the full node is required in the device. 

What is the purpose of the nodes?

Nodes in the particular device help in storing the data in the peculiar format. The enlisted ones define the purpose of the nodes. 

  • If a block of transactions is valid, the nodes will accept or reject it
  • The nodes save and store the transaction block that contains the transaction history
  • If other node needs synchronization with the particular blockchain, then the nodes have to broadcast and spread the transaction history to it. 

So, what’s next?

You might have heard that many financial institutions and mainstream corporations have indulged in using blockchain. Blockchain explores many ways of insisting on the blockchain ways and provides an overview of the technological outway. Having an endoscopic look regarding the blockchains, it is the time to know how it works efficiently.  

How does blockchain work?

In a blockchain, the transactions ought to occur often. In that case, when a transaction has to be edited or added, nodes take in the responsibility. The nodes in the blockchain execute multiple to evaluate and verify the individual blockchain that has been added. 

If the majority of the nodes find it valid, then the process will be processed. Further, it will be added to the ledger and to the chain of transactions. On the contrary, when the majority of the nodes find it invalid, then the ultimate process will be denied. 

Blockchain has three primary components that include diverse existing technologies. According to CoinDesk, there are three components or technologies involved in the blockchain. 

  • Private key cryptography
  • A distributed network with a shared ledger
  • Accounting for transactions and records for the network

The first is the private key cryptography which helps in detailing two individuals who wish to have an online transaction. Both the individuals have separate keys namely public key and private key. When the cryptography enters into the way, then it combines both the keys. Thereby, it becomes a digital reference point. Secure identity is the major attribute of blockchain technology. When the public and the private key to generate a digital signature, it becomes a certifying and controlling ownership tool. 

In the cryptographic field, the digital signature has been combined along with the distributed network. All individuals act as a large network along with the validators with consensus at various things. The large network helps in securing the network. Using the cryptographic keys, the blockchain allows the new type of digital transactions. 

Confirmation process

In the blockchain process, confirmation is one of the important aspects to be taken into consideration. As explained above, when there are two individuals using transactions, the blockchain first allows Person A to use the private key. Then, the information together forms a block after getting relevant information from the public key of person B.

The formed block contains a digital signature, timestamp, and other information without including the identity of the individual. Once the block is formed, it gets transmitted to the blockchain network over all the nodes. At the same time, it acts as a validator for the transaction. 

All these transaction processes need huge computing power, doesn’t it? In order to overcome this process, here comes the mining process. The mining process stands in withstanding the computing power. In the blockchain validation, when a person gives up a part of his/her power, he/she will be rewarded. In order to earn a small portion of cryptocurrency, the users have been acting out with self-interest to reduce the computing power. 

So, what blockchain brings in for the business realm? 

Yes, the blockchain brings in random benefits for a diverse business realm. The advantages are huge and stand out more than others. 

You might have come across many people who associate the blockchain with the cryptocurrency. If yes, then it is the success of the bitcoin. Actually, bitcoin is the word that stirs up the insight of blockchain technology. 

Compared to the other blockchain application in business, bitcoin has surged into standard benefits. Many other sectors have been immensely involved in the blockchain technology. In particular, businesses are taking advantage of this technology mainly due to the reduced costs and increased accountability. 

Coming to the basic advantages, decentralization, security, immutability, and transparency are the major areas benefited by blockchain technology. 

Here are a few notable points of blockchain technology. 

  • Blockchain technology helps in verification that eliminates the dependencies over to third parties
  • In the blockchain, the data structure is append-only. In short, tampering is not possible because of blockchains
  • In order to secure the data ledgers, blockchain technology uses protected cryptography. In addition, the current ledger has been dependent on the adjacent block over to the cryptography process
  • After maximum trust verification, all transactions and data ought to be attached to the block There is a consensus that brings in all ledger participants to record in the details of the block
  • All the transactions given in the block are recorded in chronological order. Hence, the blocks in the blockchain are time-stamped
  • The role of ledger involves in every single node that helps in distribution
  • Blockchain helps in a transparent transaction. An individual with authority can access the transaction details
  • Information provided in the blocks is decentralized. As the transactions are stored in millions of systems, there are high chances to recover your data. 

How can a business make use of the blockchain?

We all have been aware of the benefits of blockchain technology. Let us see how it helps businesses in storing records and transactions. 

Static registry

In the blockchain technology, the ledger filled with records is always stored for future purposes. When data is lost, it can be retrieved without any delay. On the other side, the ledger stores data that can neither be edited nor be deleted. Hence, the time stamping work of the blockchain technology helps in various sectors. Especially, for patents, research articles, and origin, the role of the ledger is hugely helpful. 


Similar to the static registry, the identity-related information is performed separately by the blockchain. There are various segments in the identity part that helps in bringing out identity frauds, voting, police records, and court cases. 

Smart contracts

Before a transaction is valid, it is important to get to fulfill certain conditions. When the particular conditions are fulfilled, the upcoming actions are automatically triggered. For instance, if there is a scenario for insurance-claim payout, it is important for individuals to meet the conditions during the insurance claims. 

The amount of transaction ought to occur only when the consumer satisfies the contract set. The same thing can be implemented in other areas including music releases, cash-equity trading and so on. 

Dynamic registry

Coming to the registries, the digital platform keeps updating the goods/services. In the drug-supply chain, the best use case has been described effectively.  The delivery track starting from the godown can be tracked. It rather gets into the full details of the movement of goods. Hence, it can also be used to stop the supply beforehand if any changes ought to occur. 

Payment registry

The payment registry can also be stated as the dynamic registry that brings down payment updates. In the case of the international payment system, the payment registry brings in additional advantages.

In a nutshell,

Blockchain ought to meet the Internet of Things (IoT).

According to the IDC report, around 20% of IoT deployers will enable blockchain services in their work. In order to improve the day-to-day life and the technological phase, blockchain and IoT involve in a great part. Everything comes toward the technological growth that stirs up the growth of every sector. Blockchain has been in its path to provide errorless and secure transactions with a clean backup.