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Priya Gupta· 8 years ago
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What is Blockchain technology?

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If you have heard of Bitcoin (which you probably have), you must have also heard of Blockchain Technology. Many people are calling this revolutionary and many top institutions are already employing this technology. But what it really is?

Blockchain is a digital decentralized public ledger where transactions are recorded. The individual transactions – also called blocks – are recorded and added to the ledger in chronological order. There isn’t any central institute that handles the bookkeeping. It is completely independent.

The block or recent transactions are recorded through cryptography. And once it is recorded, it goes to the blockchain as a permanent database, which can never be altered. Each block usually contains a cryptographic hash pointer as a link to previous block. It’s actually what its name says, a chain of blocks.

This whole database – that is continuously growing – is created by a technology known as blockchain technology.

The main reason why blockchain technology came into existence and became so popular is because of the transparency and meddle-proofing in recording transactions it brings. Also, transactions recorded on digital ledger are much cheaper and quicker. This is the biggest reason why many tech companies and organizations in financial sector are taking up this sector.

India’s largest bank SBI (State Bank of India) has already announced that it soon will be using blockchain for smart contracts and KYC. Expect more joining this bandwagon as this technology matures

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Rohan ChauhanAuthor
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Updated on12/25/25
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We offer end-to-end blockchain development for startups and enterprises, building secure and scalable solutions on platforms like Ethereum, Solana, Hyperledger Besu, and private networks, including dApps, DeFi protocols, and enterprise-grade ledgers.

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Tantrija Enterprises
Tantrija EnterprisesAuthor
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We transform businesses from Web2 to Web3 with blockchain-driven solutions in DeFi, NFTs, cryptocurrencies, and DApps. Our expertise includes mobile/web development, cloud infrastructure, DevOps, and game development. We deliver client-focused, innovative solutions for growth and success in the digital era.

Updated on03/31/26
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Agreed Rohan. In coming months, the blockchain technology won't only be limited to crypto-currencies, banks but also to government. Don't be astonished if EVM data collated in next elections, use blockchain technology to be more transparent and upright.
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Prreeti Radhika Taneja
Prreeti Radhika TanejaAuthor
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Answered on01/07/18
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Blockchain is a digital technology that stores data in connected blocks instead of keeping it in one central server. Every transaction added to the blockchain gets verified by a network of computers, making the system transparent and difficult to hack.

This technology became famous because of cryptocurrencies like Bitcoin, but now it is also being used in banking, healthcare, logistics, and even voting systems.

One major advantage of blockchain is security because records cannot be easily changed once stored. In recent years, companies and governments have started exploring blockchain for faster and safer digital services. Experts believe blockchain could transform industries in the same way the internet changed communication.

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Priyaa AgrawalAuthor
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Answered on05/12/26
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Blockchain technology is a digital system for storing and sharing information in a way that is secure, transparent, and very difficult to change or hack. It is the foundation behind cryptocurrencies like Bitcoin, but its use is much wider than just digital money.

In simple terms, a blockchain is a chain of digital “blocks,” where each block contains data. This data can be anything—financial transactions, records, contracts, or even supply chain information. Once a block is filled with data, it is linked to the previous block, forming a continuous chain. That is why it is called “blockchain.”

What makes blockchain special is that it is decentralized. In traditional systems, data is stored in one central server (like a bank database). But in blockchain, the data is stored across many computers (called nodes) around the world. This means no single person or organization fully controls it.

Every time a new transaction happens, it is verified by multiple computers in the network using complex algorithms. Once verified, the transaction is added to the blockchain and becomes almost impossible to change. This creates a very high level of security and trust.

Another important feature is transparency. In many blockchain systems, all transactions are visible to participants in the network. Even though personal identities may remain hidden, the transaction history can be publicly checked, which reduces fraud and corruption.

Blockchain technology is not only used in cryptocurrency. It is also used in many industries like banking, healthcare, supply chain, real estate, and even voting systems. For example, in supply chain management, blockchain can track products from manufacturing to delivery, ensuring authenticity and reducing scams.

One of the biggest advantages of blockchain is that it removes the need for middlemen. For example, in banking, transactions usually go through banks or payment processors. With blockchain, people can directly transfer value to each other securely.

However, blockchain also has challenges. It can be slow for large-scale transactions, uses a lot of energy in some systems, and is still complex for many people to understand.

In conclusion, blockchain technology is a revolutionary system that improves security, transparency, and trust in digital transactions. It is changing how data and value are stored and transferred, and it has the potential to transform many industries in the future.

Curious to know more shocking facts? Read next:   Should Dhoni Retire and Make Way for Young Players?
 
 
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Michael JonsAuthor
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Answered on05/09/26
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Blockchain technology is a decentralized digital ledger that records transactions across many computers in a secure and transparent way. Instead of relying on a single central authority like a bank, the data is stored in blocks that are linked together in a chain. Once a transaction is recorded, it’s very difficult to change or delete, which helps make the system secure and trustworthy. This technology is widely used in cryptocurrencies like Bitcoin, but it’s also being explored for many other industries.

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MOHD ADEEBYouth & Social Media Researcher
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Answered on04/20/26
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Blockchain innovation is most basically characterized as a decentralized, conveyed record that records the provenance of a computerized resource. ... Blockchain is most just characterized as a decentralized, dispersed record innovation that records the provenance of an advanced resource.
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eweb guruAuthor
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Answered on05/13/20
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The blockchain is a system in which records of transactions are made in bitcoin or another cryptocurrency. It is maintained among several computers that are linked together in a well-formed network. This technology is like an internet which has built-in robustness.

The blockchain technology cannot be controlled by a single entity and it has no single point of failure.

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Dazzling DazzlerAI & Future Tech Enthusiast
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Answered on02/25/19
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Blockchain has been hailed by many as the next frontier of technology, creating a new form of digital currency that's not controlled by any country or government. It's very secure and transparent, making it a perfect tool for all kinds of transactions.

The people behind blockchain say it will change the world but an impactful one is yet to be seen. For now, companies like Apple and Microsoft are eyeing blockchain as an input into their own products and services. The technology will likely have widespread use in just a few years with widespread implications afterward if its uses continue to expand in the future.

Is Blockchain really a Path-Breaking technology

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Gaatha AnandAuthor
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Answered on04/23/22
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Blockchain technology is based on peer-to-peer (P2P) topology, and it is a DLT i.e. Distributed Ledger Technology (DLT) in which data is stored on thousands of servers located worldwide. Anyone on the network is able to see everyone else's entries.
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Severine JohnsonAuthor
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I have more than 3 years of experience working as an IT professional.

Answered on09/27/20
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