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Blockchain Introduction
Blockchain is a technology that digitally stores individual information (blocks) that are connected to one another. Linked blocks resemble a long chain that can not be changed or stolen without detection. This public register is a transaction log, which can be anything from money, goods or protected data.
The many applications of Blockchain methods
Blockchain technology can be used in a variety of activities and resources, including:
Cryptocurrencies– A digital currency is issued in pre-established quantities and on the basis of stable programs. A blockchain is the most reliable way to ensure that this happens. For this reason, a blockchain-based platform can issue its own virtual coins, producing them in a set number.
Smart contracts– Contracts with information containing their terms of execution can be stored on the blockchain. These contracts self-execute themselves based on the information they collect over time, without any input from the signatories.
This allows companies and individuals to enter into agreements with the certainty that they will be applied in a non-distorted way. This is particularly useful for industries that produce virtual goods, where contracts between creators of content and brands are difficult to enforce.
Quality record- Digital transactions require clear, accurate and recoverable records of participants' assets, as well as the means of transfer for such assets. Blockchain is the technology that can create and ensure that those records are protected.
Not only are blockchains resistant to external interference and theft, but because they are decentralized, they can be quickly accessed from a variety of locations. This facilitates the process of negotiating cryptocurrencies, virtual assets and a range of other products globally.
How Blockchain will change the world
Banks and payments
Because blockchain allows anyone to exchange money faster, more efficiently and more securely, it is not surprising that banks and remittance companies will work to adopt blockchain technology to improve their transactions. 
Internet of things
The Internet of Things (IoT) has extended its use to a variety of industries, such as automobiles, home appliances and even construction, integrating them with software, network connectivity and sensors.
However, because these devices run from a central location that handles communications, this can allow malicious parties to access your IoT devices. Kamil Przeorski, expert in Bitcoin and Ethereum skills, blockchain can be a potential solution to these important security problems because it decentralizes all information and data. As a result, blockchain will have more implementations with increasing IoT capabilities.
Cybersecurity
Because all data is verified and encrypted on a blockchain using advanced encryption, this makes it resilient to unauthorized changes and hacks. Centralized servers are subject to data loss, corruption, human error and hacking.
There have been many companies that have been hacked and lost their data, such as Verizon and Target. The decentralized and distributed Blockchain system would allow data stored in the cloud to be more robust and protected from attack.
Communication
Blockchains can allow two or more parties to communicate faster, more securely and more consistently. Automatic or digital communication using pre-established algorithms has already been implemented on a large scale in some sectors. These examples are e-mails, system alerts, and call notifications. 
Matt Peterson, co-founder of Jive Communications, said that while many communications are currently automated, it is usually not critical and asynchronous.
He specified that "Blockchain can move the game field to allow two-way authorized communications and transactions that happen more freely in an automated environment and produce an immutable record of communication." To sum up, blockchain will be able to significantly improve the security and reliability of our communications.
Rentals and travel sharing
Blockchain can generate decentralized peer-to-peer route sharing apps, such as Uber, and allow car owners to automatically pay for things like parking, tolls, and fuel. Technology can also be applied with rental properties, as intelligent contracts are self-executing and can not be changed once they have been established.
Government
Complicated bureaucracy and political corruption: what do they have to do with the blockchain? Well, this technology can help reduce bureaucracy and increase security, efficiency and transparency. The benefits in terms of welfare and unemployment could be verified and distributed more easily without having to rely on paper documents or slow systems. With the elections, the votes can be counted and verified by legitimacy.
Crowdfunding and charity donation
When you make a donation to a charitable cause, you do not know exactly what percentage of your donation will actually be given or used to help the cause. Blockchains can guarantee that funds are allocated where they should go.
Using smart contracts and online reputation systems, donors will be able to see where their donations go through the use of a secure and transparent ledger.
Health care
Blockchain can be used to record sensitive information and create a decentralized database. This feature can be used to store private patient data collected from hospitals on a secure platform that can be accessed by doctors from anywhere.
In the future, hospitals and other healthcare organizations could create centralized and secure blockchain-based databases, using them to store medical records and share them only with licensed physicians and patients.
Conclusion
While the blockchain is still in its early stages, the possibilities for innovation are endless. There are many more industries that will be affected by this technology, such as retailing, energy management, music and art, supply chain management, insurance and many others.
