Blockchain, brainchild of the Anonymous founder/s of the World’s first crypto-currency, Bitcoin, Satoshi Nakamoto is often referred to as “The Backbone of the new Internet”. Initially conceptualised in 2008 for Bitcoin, blockchain has found its use in several other fields.
WHAT IS BLOCKCHAIN?
Blockchain is an open and distributed ledger, which can record transactions between two parties in a verifiable and permanent way. Once recorded, the get private key from recovery phrase transaction data cannot be modified retroactively, without alteration of all subsequent blocks. This also allows users to verify and audit transactions without much cost.
Blockchain is a continuously growing list of records, linked and secured using cryptography (secret codes which prevent third parties or the public from reading the transaction data), wherein each Block contains a timestamp and transaction data, managed by a Peer-to-Peer, P2P (User to user) network.
Person A requests a transaction involving crypto-currency, records, contracts, or other information → The requested transaction is broadcast to a P2P network consisting of computers, known as Nodes → The network of Nodes validates the transaction and the user’s status, using known Algorithms → The verified transaction is combined with other transactions to create a new block or data for the ledger → The new block is then added to the existing blockchain, in a way that is permanent and unalterable → The transaction is complete.
Point to remember here is that the transaction data has no physical form, existing only on the network, and has no intrinsic value to third parties.
Quite simply, blockchain is an autonomously managed and regularly reconciled digital ledger, which can record not just financial transactions, but everything of value. Blockchain enables the exchange of value without any centralised intermediation by arbiters of money and information. It is a kind of a self-auditing ledger which reconciles itself every 10 minutes.
ADVANTAGE OVER CENTRALISED DATABASES:
Centralised data is controllable and hence the data is prone to manipulations and theft. On the other hand, in a blockchain, there are no centralised points of vulnerability for the information to be hacked and corrupted. Because of storing blocks of identical information across the network of the blockchain, it cannot be controlled by a single entity, has no single point of failure, and hence cannot be modified retroactively. Anything that happens on a blockchain is a function of the network as a whole.
Further, blockchain reduces the TAT of processes, and because of being distributed, it makes data transparent for everyone involved. Blockchain technology can help make even the traditional processes faster, more accurate, and secured, while drastically reducing the costs involved in Database Management.
The only reported problems in the blockchain technology have been due to human errors and bad intentions, and not because of any flaws in the technology.
APPLICATIONS OF BLOCKCHAIN IN INDIA:
The distributed nature of blockchain makes anything based on it more cost-effective, efficient, and secured. It can be used to upgrade many economic and social systems, like:
i. Banking:
Most, if not all, Banking systems are built around Centralised Databases. The costs, labour, time, and risks of frauds involved in reconciliation and processing of billions of transactions is a challenge that the Banking Industry, even after so many up-gradations, has not been able to address. The global success of Bitcoins and other crypto-currency has shown the Banking system how advantageous blockchain technology can be, when it comes to reducing online banking frauds.
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