Blockchain and its Application

In this research investigation into Blockchain Technology, its current use and other possible implementation of this protocol are explored. Blockchain offers opportunities for developing advanced digital services. While current research on this becoming the most important issue which must be well addressed. As part of the fourth industrial revolution since the invention of the steam engine, electricity, information technology, Blockchain Technology has been applied in many areas such as finance, judiciary, and commerce. In this current paper, we focused on its potential Voting Application and explore how Blockchain Technology can be used to solve Health Care Issues, Land Registry, Any Financial Sector, etc. Some innovative applications of using blockchain technology for different sectors we also discussed.


Medium of
Store of Unit of Exchange Value Account As first let's know some history of exchange policies: Credit card Term 'Credit Card' used by "Edward Bellamy's" science fiction "Looking Backward" in 1887. •

Now what is blockchain?
• Blockchain is the core technology to create "Cryptocurrency" like Bitcoin, through the maintenance of immutable distributed ledgers in thousands of nodes proposed by "Satoshi Nakamoto" in 2008.
• "_______a way for one internet user to transfer a unique piece of digital property to another internet user, such that the transfer is guaranteed to be safe and secure, everyone know that the transfer has taken place and nobody can challenge the legitimacy of the transfer______"

Fundamental of Blockchain Technology
The technology of Block chain, like the internet, offers a global infrastructure of secure network that may allow the users to make transaction in a way that may allow the users to make transaction in a way that the middleman may be evicted and this making the cost of any transaction to come down. The whole structure of block chain enables a digital ledger of information to be shared within a network, between the distributed nodes.

How blockchain works
Database: a database is an organized collection of data. A relation database more restrictively is a collection of schemas,   The combination of these complex math puzzles is verified by many computers ensures that we can trust each and every block on the chain because the network does the trust building for us, we now have opportunity to interact directly without data in real-time and that brings us to the third reason blockchain technology is such a game changer: no more intermediaries.

3.Blockchain Application
What do people use blockchain for? ➢ Finance

Blockchain Voting
In the current system, Voting is generally done either by writing your opinion on the paper or by electronic voting machine.
Replacement of this traditional system is necessary to limit the voting Froude and to make the voting as well as the counting process more transparent. Further a system is required the make voting containment for the voters a system that minimizes the cost of conducting elections as money spent on the national election is huge. A system which allows us to vote even when we travelling abroad or are not present in our home state. We are now a Society that prefers to live online right from ordering food, to booking Cabs, to booking Cabs, to shopping our daily groceries and even finding our life partners. Then why can't we cost our votes ad select our click on a screen? Why can't there be a system where we can vote online through the comfort of our homes. Though many on time voting solution have been proposed in the past but we don't see them in reality. There such online e-voting or remade voting system faces. Let us first have a look at these challenges-Remote electronic voting requires stringent measures for the voting process. Because in this case risk of large-scale manipulation is simply too high. There is a risk of hacking activities by hackers who could directly infect and hack the servers.
Block chain can help to implement and electronic voting system that is immutable, transparent and cannot be hacked into Figure 6. Voting In order to change the results Blockchain voting is an effective means and foremost step in this block chain-based voting system is to validate the identity of the voter at is very important to ensure that someone's identity is not being faked because here every vote count and is epually important. To keep a check this voter needs to download the remote voting booth on his mobile, laptop or any other smart advice. After that, he needs to submit his identity information which gets verified by the organization conducting these elections. The organization will refer to the details of the registered voters and verified it the person is registered on their database and is eligible to vote. Then all the information of the voter blockchain. After his identities verified, a smart contract will be executed that will issue a ballot so that he can vote and submit it to the ballot box. Blockchain based voting system will ensure that a user does not vote multiple times.
Many countries and states are running a pilot to adopt Blockchain Technology for a secure voting system. For example, West Virginia, Sierra Leone tested mobile voting through Black chain in 2018. Apart from states elections, this Block chain-based voting system could also facilitate, voting processes inside private companies' organizations and college elections.

Figure 7. Prevention from Voter-block
Convenient notification is sent when your ballot is ready, for our design we tried to create a system that does not entirely replace the current voting but rather integrates within a current system. We decided to do this to allow for as many different ways to vote as possible, this is so voting can be accessed by the majority of the population.

Block chain in healthcare
In the world of healthcare today, there are two major focuses that must be addressed: • Data security and data ownership • Sensitive medical records currently lack a secure structure Leading to data breaches with severe consequences. research about block chain and healthcare system is currently limited, but block chain is on the brink of transforming the healthcare system • The healthcare system is losing $300 billion each year in poor data integration "Statistics show that up to one in five patient records are not accurately matched even within the same healthcare system as many as half of the patient records are mismatched when data are transferred between the healthcare" -Shaun Grannis

Why do we care and what do we want?
• Data at right time and place (intro-probability) • Improve personal treatment outcome

Challenges
• Achieving interoperability and privacy simultaneously seems contradictory • How to ensure data availability and exchange when required while letting patients to control who can access their data for which purpose • How to effectively prove that patients have given their consent? Demo: scenario • Healthcare providers collect information from the patients • The data is stored in exiciting database • A "hash" is created from each source of data and is redirected to the block chain • The patient decides who has access to this medical record • Healthcare stakeholder can query the block chain to access to the information

Block chain in Land Registry
Indian land record system is still inspired by the one introduced by Raja Todarmal (one of the 9 gems in the court of akbar). This land record maintenance numerous records, each of which would potentially be records could be mutated without the consent of the owner niti aayog recently announced that "block chain technology" will bring out a discussion paper on leveraging this technology for land record management. Andhra Pradesh is currently working with the private firms to secure land records in its new capital, Amaravati using Block Chain.
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Conclusion
Our study has recognized some limitations. First, this paper only analyzed the literature in web of science core collection database (WOS), which may lead to incompleteness of the relevant liter nature. Second, we filter our literature base on the subject category in wos. In this process, we may have omitted some relevant research. Third, our recommendation has subjective limitations. We hope to initiate more research and discussions to address these paints in the future. Furthermore, we indicated the security and privacy issues have been a central research topic. The technology of blockchain first emerged during the 2008 financial crises, at a time when people's trust in institutions, in particular financial institutions, was very low, and it came to prominence as the technology underpinning bitcoin cryptocurrency. Now the term 'block chain' itself hides a complex reality.