Blocks by Nithin

Blocks by Nithin

Smart Vaccination of COVID-19 using Blockchain


The COVID-19 pandemic has led to a dramatic loss of human life worldwide and presents an unprecedented challenge to public health, food systems, and the world of work. The economic and social disruption caused by the pandemic is devastating: tens of millions of customers are at risk of falling into extreme poverty, while the number of undernourished Customers, currently estimated at nearly 690 million, could increase by up to 132 million by the end of the year.

Millions of enterprises face an existential threat. Nearly half of the world’s 3.3 billion global workforces are at risk of losing their livelihoods. Informal economy workers are particularly vulnerable because the majority lack social protection and access to quality health care and have lost access to productive assets. Without the means to earn an income during lockdowns, many are unable to feed themselves and their families. For most, no income means no food, or, at best, less food and less nutritious food.

COVID-19 vaccination is now offering a way to transition out of this phase of the pandemic. Without them, many scientists believe that natural herd immunity would not have been sufficient to restore society to its normal status quo and that it would have resulted in an extreme fatality. This is something that has been echoed by many health organizations including the WHO. In a scenario without access to vaccines, strict behavioral measures may have had to remain for the foreseeable future. Fortunately, the beginning of 2021 saw numerous vaccines given emergency approval and begin their rollout in countries across the world. As of March 2021, just shy of 300 million vaccine doses had been administered worldwide. The figures give hope for a return of normalcy.

In India, Vaccines are provided in hospitals by both government and private hospitals. They are provided in various -places like hospitals and schools. There is tamper in data as some didn’t get vaccinated and it is showing they got vaccinated. Some hackers are trying to hack the servers and get the sensitive information of customers who are getting vaccinated. To reduce all these, Blockchain is used to better understand, explain, and provide transparency, accountability, and traceability.


Blockchain is a peer-to-peer decentralized distributed ledger technology that makes the records of any digital asset transparent and unchangeable and works without involving any third-party intermediary. It is an emerging and revolutionary technology that is attracting a lot of public attention due to its capability to reduce risks and fraud in a scalable manner.

Now here comes the question why is Blockchain a distributed, decentralized P2P network? A decentralized network offers multiple benefits over the traditional centralized network, including increased system reliability and privacy. Moreover, such networks are much easier to scale and deal with no real single point of failure. The reason why Blockchain is distributed is because of shared communication and distributed processing.

The P2P architecture of Blockchains provides several benefits such as greater security compared to traditional client-server based networks. A distributed P2P network, paired with a majority consensus requirement, provides Blockchains a relatively high degree of resistance to malicious activities.


Blockchain can be defined as a shared ledger, allowing thousands of connected computers or servers to maintain a single, secured, and immutable ledger. Blockchain can perform Customer transactions without involving any third-party intermediaries. In order to perform transactions, all one needs is to have a wallet. A Blockchain wallet is nothing but a program that allows one to spend cryptocurrencies like BTC, ETH, etc. Such wallets are secured by cryptographic methods(public and private keys) so that one can manage and have full control over his transactions.

Now, this is how Blockchain works. Initially, when a Customer creates a transaction over a Blockchain network, a block will be created, representing that transaction is created. Once a block is created, the requested transaction is broadcasted over the peer-to-peer network, consisting of computers, known as nodes, which then validate the transaction. A verified transaction can involve cryptocurrency, contracts, records, or any other valuable information. Once a transaction is verified, it is combined with other blocks to create a new block of data for the ledger. Here it is important to note that with each new transaction, a secured block is created, which are secured and bound to each other using cryptographic principles. Whenever a new block is created, it is added to the existing Blockchain network confirming that it is secured and immutable.


Immutability: In a traditional database, you have to trust a system administrator that he is not going to change the data. But with Blockchain, there is no possibility of changing the data or altering the data; the data present inside the Blockchain is permanent; one cannot delete or undo it.

Transparency: Centralized systems are not transparent, whereas Blockchain (a decentralized system) offers complete transparency. By utilizing blockchain technology, organizations and enterprises can go for a complete decentralized network where there is no need for any centralized authority, thus improving the transparency of the entire system.

High Availability : Unlike centralized systems, Blockchain is a decentralized system of P2P networks which is highly available due to its decentralized nature. Since in the Blockchain network, everyone is on a P2P network, and everyone has a computer running, therefore, even if one peer goes down, the other peers still work.

High Security : This is another major benefit that Blockchain offers. Technology is assumed to offer high security as all the transactions of Blockchain are cryptographically secure and provide integrity. Thus instead of relying on third-party, you need to put your trust in cryptographic algorithms.

NOTE: Further Development of the app will be Updated soon.

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