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The technology of blockchain involves the use of a ledger or database that is a distributed one and it is shared among the different nodes of a network of computers. In the form of a ledger or database, blockchain helps in the storage of information electronically and in a format that is strictly digital. Blockchains have gained popularity because of their significant role in systems of cryptocurrency like for instance Bitcoin. They find use in maintaining records of transactions in a decentralised and secure way. The technology of blockchain has been designed in such a way so that fidelity is guaranteed together with security and trust automatically gets generated even in the absence of a third party.

Information in blockchain is collected in the form of blocks which in turn holds information in the form of sets. The storage capacities of the blocks are defined and when they are in the filled up state they are closed and then they are connected to the block that has been filled before it. This forms the data chain that is popularly known as the blockchain. Any new information is added in the same way to a block that is formed in a fresh way and once filled it gets added on to the chain.

Data that is recorded in a blockchain cannot be edited further. The information that gets stored holds no chance of being deleted or altered. The creation of different cryptocurrencies has led to blockchain being used on an increased scale. It is the task of blockchain to spread the data in the database to different nodes in the network located at several locations. In case someone tries to make changes in one of the records located at some particular instance of the database, the nodes located in other places shall not be altered and this would prevent unethical activities from happening.

In the field of finance, blockchain has managed to save time and money by reducing or removing third-party costs. Large financial institutions use blockchain for transference of money in an efficient manner. Blockchain prevents hacking to a great extent in the various applications of IoT. It makes the Internet of Things both safer as well as smarter. Blockchain is finding use in the healthcare sector. It can be used to store sensible and private information of a patient and the problem of information getting stolen or even identified is not there. Tracking of goods is now easier with blockchain and it has made the management of supply chain even more efficient.

Cybersecurity has been a major concern to the general public. The technology of blockchain has been successful in providing solutions to the problem of cyber threats. The technology is swift enough to identify any kind of malicious attack and this is possible due to the specialised connectivity that makes tampering with data impossible.

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