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Use of Blockchain Technology
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Use of Blockchain Technology

Published On: February 17, 2023

Defining Blockchain Technology

Blockchain technology is a distributed, decentralized ledger that keeps track of who owns which digital assets. Blockchain technology is a real disruptor for markets like payments, cybersecurity, and healthcare since it prevents any data stored on it from being altered. Learn more about it, including what it is, how it works, and its history through this article.

What is Blockchain Technology?

Blockchain technology, a sophisticated database system, permits open information exchange inside a business network. In a blockchain database, data is held in blocks that are linked together in a chain.

The data is still constant in time since the chain cannot be deleted or changed without network agreement. You can set up an unchangeable or immutable ledger using blockchain technology to manage orders, payments, accounts, and other transactions.

The system’s built-in capabilities, which also prevent unauthorized transaction submissions, make it possible to see these transactions as a whole.

Why is Blockchain Important?

Business requires information to function. It is preferable if it is received promptly and precisely. Blockchain is the best technology for delivering that information because it offers real-time, shareable, and entirely transparent data that is kept on an immutable ledger and accessible exclusively to members of a permissioned network.

Among other things, a blockchain network can track orders, payments, accounts, and production. Additionally, because everyone has access to the same version of the truth, you can see every aspect of a transaction from beginning to end, increasing your confidence and opening up new prospects.

Key Features of Blockchain Technology

The primary features of blockchain technology are as follows:


Decentralization in the context of blockchain is the transfer of authority and accountability from a centralized entity (a person, an organization, or a group) to a distributed network. Transparency breeds mistrust among users in decentralized blockchain networks. Additionally, these networks stop users from interfering in ways that would harm the network’s functionality.


If something is immutable, it can never be changed or altered. A transaction cannot be modified by another participant after it has been added to the shared ledger. You must create a new transaction to fix an error in an existing transaction record, and both transactions are visible to the network.


Rules governing participant consent for transaction recording are established by a blockchain system. New transactions cannot be recorded until the majority of network users have given their approval.

What are the Major Elements of Blockchain Technology?

The fundamental components of blockchain architecture are as follows:

Distributed Ledger

A distributed ledger, which can be compared to a team’s shared file that everyone can update, is the shared database in the blockchain network that maintains the transactions. Anyone with editing privileges can remove the entire file from the majority of shared text editors. However, there are stringent limitations on who can edit and how to modify with distributed ledger technology. Once an entry has been made, it cannot be deleted.

Smart Contracts

Businesses can self-manage contractual responsibilities with the use of smart contracts, doing so without an intermediary. They are programs that are stored on the blockchain system and run on demand when specific conditions are met. They carry out if-then checks to confidently complete transactions. A logistics company might, for example, set up a smart contract to pay suppliers once the products arrive at the port.

Public Key Cryptography

Public key cryptography is a security feature used by the blockchain network to allow participants to be uniquely identifiable. This method generates two sets of keys for network users. The one key, or same public key, is used by every member of the network. The second is a unique key that each member possesses. The data in the ledger can be accessed using both the private and public keys.

How Does Blockchain Work?

We provide a quick introduction to the underlying blockchain mechanisms in the steps that follow, notwithstanding their complexity. Blockchain software can automate the majority of these steps:

Step 1: Transaction Record

Blockchain transactions document the transfer of tangible or digital assets from one party to another. It can contain information like the following and is stored as a data block:

  • Who took part in the transaction?
  • What transpired throughout the transaction?
  • When did the deal happen?
  • Where did the deal happen?
  • Why did this transaction take place?
  • Exactly how much of the asset was traded?
  • How many of the transaction’s prerequisites were satisfied?

Step 2: Obtain Consensus

The distributed blockchain network requires a majority of users to agree that the transaction was legitimately recorded. Rules of agreement can differ depending on the type of network, but they are usually defined at the beginning of the network.

Step 3: Linking the Blocks

Once the parties have reached an agreement, transactions on the blockchain are stored in blocks, which resemble the pages of a ledger book. A cryptographic hash is added to the new block along with the transactions. The chain the hash produces links the blocks together. When the block’s contents are altered, whether intentionally or unintentionally, the hash value changes, making it possible to detect data manipulation.

As a consequence, the chains and blocks are solidly connected and immovable. Each new block strengthens the verification of the one before it and, consequently, the blockchain as a whole. This is comparable to using wooden blocks to construct a tower. Blocks can only be built on top of one another; if a block is taken out of the middle of a tower, the structure will fall.

Step 4: Sharing the Ledger

Each user of the system receives a copy of the most recent central ledger.

Types of Blockchain Networks

In the blockchain, there are four primary categories of decentralized or distributed networks:

Public Blockchain Networks

Public blockchains have no access limitations and are available to all users. Each member has an equal right to use, update, and validate the blockchain. People mostly utilize public blockchains for cryptocurrency trading and mining, specifically for Bitcoin, Ethereum, and Litecoin.

Private Blockchain Networks

Managed blockchains, often known as private blockchains, are operated by just one company. What privileges have been decided by the authorities and who is eligible to join the network? Private blockchains are only partially decentralized because of access restrictions. The digital money exchange network for businesses known as Ripple is an example of a private blockchain.

Hybrid Blockchain Networks

Public and private network components are combined in hybrid blockchains. In addition to creating public systems, businesses can also design private, permission-based ones. They keep public access to the remaining data while limiting access to some data stored on the blockchain in this manner. They employ smart contracts to enable general users to validate the execution of private transactions. For instance, hybrid blockchains can allow for both public access to digital currency and the privacy of money held by banks.

Consortium Blockchain Networks

A group of institutions oversee blockchain consortium networks. Pre-selected organizations jointly maintain the blockchain and decide on data access rights. Blockchain consortium networks are occasionally preferred by industry sectors that profit from shared responsibility and have numerous organizations working towards the same objectives. One such charity blockchain collaboration is the Global Shipping Business Network Consortium, which aims to modernize the shipping industry and promote greater operator cooperation in the maritime sector.

What are the Popular Blockchain Protocols?

A range of blockchain platforms that can be used to build apps are referred to as “blockchain protocols.” Each blockchain protocol makes adjustments to the core ideas of the blockchain to suit unique markets or uses. Some examples of blockchain protocols are shown in the following subsections:

Hyperledger Fabric

The open-source Hyperledger Fabric project consists of a number of tools and components. It makes it possible for companies to swiftly and successfully develop private blockchain apps. It has unique identity management and access control features and is a general-purpose, modular framework. These features make it suitable for a range of uses, such as trade financing, loyalty and rewards schemes, supply chain management, and clearing and settlement of financial assets.


The Ethereum platform can be used to build open-source, decentralized public blockchain apps. Ethereum Enterprise is designed to be used in business settings.


The open-source Corda blockchain project is designed for business application. With Corda, it is possible to create interoperable blockchain networks with strict privacy. By adopting Corda’s smart contract technology, businesses may transact directly and for value. Many of their users are financial institutions.


Quorum is an open-source blockchain protocol built on Ethereum. It is designed primarily for usage in networks like private blockchains, in which one person controls every node, or consortium blockchain networks, in which different members control certain parts of the network.

The Evolution of Blockchain Technology

Blockchain technology originally appeared in the late 1970s, when Ralph Merkle, a computer scientist, invented hash trees, commonly known as Merkle trees. These trees are a particular kind of computer science structure used to store data by linking blocks in a secure manner. Haber, Stuart, and W. In the late 1990s, Scott Stornetta developed a system that guarded against tampering with document timestamps using Merkle trees. In the history of the blockchain, this was the first instance.

The advancement of technology has continued over these three generations:

First Generation: Bitcoin and other Virtual Currencies

The present iteration of blockchain technology was first outlined in 2008 by a person or group of persons going by the name Satoshi Nakamoto. Transactions were stored in 1 MB blocks of data in Satoshi’s first design for the Bitcoin network. Many of the traits of Bitcoin blockchain systems remain crucial to blockchain technology even today.

Second Generation: Smart contracts

Developers began considering blockchain applications outside of cryptocurrencies a few years after the introduction of first-generation currencies. As an example, the developers of Ethereum decided to leverage blockchain technology for asset transfer procedures. The integration of smart contracts was their main contribution.

Third Generation: The Future

Blockchain technology is still developing and expanding as businesses find and use new applications. Businesses are overcoming scalability and computational constraints, and the current blockchain revolution offers countless opportunities.

Benefits of Blockchain Technology

The implementation of blockchain technology dramatically improves the management of asset transfers. We list some of them in the sections that follow:

Advanced Protection

Modern digital transactions require a high level of security and trust, which blockchain platforms offer. A constant worry is that someone may alter the underlying program to create fictitious funds for himself. Contrarily, blockchain leverages the three principles of decentralization, consensus, and cryptography to build a very secure underpinning software system that is virtually impossible to alter. No single point of failure exists, and only one user is unable to alter the transaction records.

Enhanced Efficiency

Business-to-business transactions can be time-consuming and lead to operational bottlenecks, particularly when third-party regulatory agencies and compliance are involved. Such commercial transactions are quicker and more efficient thanks to blockchain’s transparency and smart contracts.

Quick Auditing

Enterprises need to be able to produce, share, archive, and reconstruct electronic transactions in a safe and auditable way. Because blockchain records are chronologically unchangeable, they are always in chronological sequence. This data transparency speeds up the auditing process.

What are the Applications of Blockchain?

Blockchain is being employed for more than just transferring money. The system is adaptable to needs outside of one area of expertise due to its secure and transparent nature. Sectors like energy, logistics, education, and others use blockchain’s benefits on a daily basis.

Baking and Finance: Customers may expect their transactions to be processed by banks using blockchain in as little as 10 minutes. The time it takes to add a block to the blockchain, regardless of the day of the week or holidays. Banks now can securely and swiftly transfer money between organizations thanks to blockchain technology.

Currency: For those without state identity, using cryptocurrency wallets as savings accounts or payment methods is very significant.

Healthcare:Blockchain can be used by healthcare professionals to securely store patient medical records. Patients are given the assurance that their medical records cannot be changed by being able to save them on the blockchain after they have been prepared and signed.

Real Estate:In war-torn countries or areas with little to no financial or political infrastructure, it can be incredibly difficult to establish ownership of a property. In areas without a Recorder’s Office, it is very challenging. If locals had access to blockchain, they might be able to create clear and transparent timelines of property ownership.

Smart Contracts: With the help of a smart contract, which is computer code that can be added to the blockchain, a contract agreement can be facilitated, validated, or negotiated. Users adopt a set of rules that govern how smart contracts operate. The provisions of the Agreement shall automatically be complied with upon the fulfillment of such conditions.

Supply Chains: Similar to the IBM Food Trust example, suppliers can use the blockchain to track the origins of the products they have purchased. Businesses would be able to verify the legality of both their products and popular labels like “Organic,” “Local,” and “Fair Trade” thanks to this. The use of blockchain technology in the food industry to track the flow of food and ensure its safety from farm to consumer is expanding.

Voting: Using blockchain, it would be nearly difficult to manipulate with votes. The blockchain protocol will maintain electoral transparency while requiring fewer personnel to conduct an election and provide officials with almost immediate access to the results.

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