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Blockchain technology: A brief insight

In simple terms Blockchain technology is a distributed ledger technology which is decentralized and is vested with record keeping of the origin of the digital asset. It is also called the distributed ledger technology(DLT) and disables the modification of the history of any digital asset with the use of cryptographic hashing and decentralization. 

When a Google Doc is created and shared with the intended party, the document is not copied or transferred, rather it is distributed. This enables the generation of a decentralized distribution chain which enables everyone to access it at the same time. The Modifications are recorded real-time and changes made are kept open for everyone to see. This comparison is good to understand despite being more complex in nature as it brings forth three prime ideas:

  1. With transparency in the ledger system, the probity of the document matters a lot to build trust
  2. Since the asset is decentralized, 100% real time access is allowed
  3. Rather than getting transferred, the digital assets are distributed

The blockchain technology is revolutionary and is touted to not just reduce risk but also root out fraudulent methods as it is scalable and transparent.

How does it work?

The Blockchain technology consists of three vital principles namely blocks, nodes and miners. 

Blocks: In Blockchain every single chain is characterized by several blocks which has three main elements namely

  • 32-bit whole number known as nonce which is generated randomly when a block gets created.
  • Data is stored inside the block
  • Hash is a 256- bit number interlocked with the nonce

When the first block of the chain is generated, the nonce creates the cryptographic hash. This data set generated is permanently linked to the nonce and hash unless of course it is mined.


Miners are vested with the creation of blocks with the process of mining. Special softwares is used by miners to solve complex maths problems of detecting the nonce. As the nonce is 32 bits and hash is 256, to find the right combination of nonce and hash a close to 4 billion combinations have to be worked upon. 

If an earlier block has to be changed then re-mining of the block and all the later blocks is a compulsory process which is why blockchain is safe, guarded and difficult to manipulate. When a block is mined properly, this change is registered by the nodes on the network financially benefiting the miner.

Nodes: The best part about blockchain is that it is decentralized and no one part of the computer can own any part of the chain. It is a DLT through nodes which are connected to the chain. Nides are electronic devices that maintain the copies of the blockchain to keep the network in a functionable mode. 

The Ethereum blockchain

 Blockchain has been associated with bitcoins for a long time now but with people understanding the growing transparency and security, its adopters have increased tracing back to the development of the Ethereum blockchain. In 2013, Vitalik Buterin had published a white paper calling for a platform which was a blend of the conventional blockchain prophecy but with a different computer code. And this is precisely how the Ethereum project was generated. 

Image Source – Pixabay

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