Home Cryptocurrency An Insight into the Concept of Blockchain and Its Working Mechanisms
Asad Gilani Crypto Editor Author expertise
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The concept of blockchain is the main buzz around the world of financial technology and digitalization. Notably, cryptocurrency may be the quickest form through which anyone must have heard about blockchains. However, it stretches further than cryptocurrencies, applying its functionalities to different aspects of technology. 

The core principles, applications, and terminologies must be explored to know more about the concept and understand how it works. This article will unravel the questions on blockchain, how it works, its types, uses, and general benefits.

What is Blockchain?

A blockchain is simply a digital ledger, decentralized and circulated worldwide. The data on the blockchain is distributed as blocks and arranged using a theory known as cryptography.     

It was through this theory that the first model of a blockchain was developed. The development was conducted by Stuart Haber, a computer scientist, and Scott Storneta, a physicist, in the early 1990s. 

Their work was inspired during an attempt to protect digital data from tampering using a chain of blocks operated by cryptographic techniques. 

As the success of their works spread around, other scientists began to make notable discoveries, which eventually paved the way for Bitcoin to emerge. 

After that significant headway, more and more individuals have adopted the technology, with global growth in the use and application of cryptocurrencies. 

Yet again, cryptocurrencies are not the only data that can operate on blockchain technology. Gradually, other forms of data, like documents, videos, etc., have been saved on the blockchain, with good results. 

Theory of Decentralization On Blockchains

The concept of decentralization focuses on the ability to solely control your transactions without monitoring or approval by a third party. It also gives users the right to make decisions about their finances, take charge of their security with shared data, and keep their privacy without the interference of government agencies or corporations. 

Decentralization ensures the absence of intermediaries or central authorities, such as banks, where data flow can be watched and controlled. As a replacement, a network of computers works in sync to sustain the network regarding integrity and reliability. 

The theory of decentralization is widespread, touching the entire blockchain sector, digital assets, and NFTs. It is one of the most essential terminologies on the topic, and its continuity promises better ways for people to do business and collaborate easily with one another. 

The Working Mechanisms of the Blockchain

Specific steps occur in the blockchain before data is secured or transactions are performed. First, the technology’s core is a ledger that keeps a secure record of every peer-to-peer transaction. This record is built to be tamper-proof and distributed globally on special interlocked computers known as nodes. 

For every transaction a registered user makes on the blockchain, there is a broadcast to each computer. The nodes approve the transactions by confirming signatures and ledger history. Following the transaction verification, a recording is done, and the transaction details are added to others stacked in blocks. 

As stated earlier, using the cryptography process, these blocks make up the blockchain. This process is fundamental, ensuring the entire system is safe, accessible, and protected from being compromised. 

Also, in the context of how blockchains operate, there is a term known as consensus mechanisms, which are rules enforced to guide the functioning of nodes. These rules ensure a compatible bridge between the user’s blockchain and the authenticity of their financial transactions. 

Another term to note in the operating mechanism of blockchains is hashing. It is a part of cryptography where inputs of different sizes are converted into fixed sizes or character strings. Usually, hash functions are resistant to collision, as the odds of finding data with the same string output are uncommon. Hence, the uniqueness of blockchain technology. 

However, a drastically different outcome can be created if there is a slight change in the inputted data. The result is likened to the creation of mutant entities, similar but not in the exact or acceptable forms needed. 

There is also public key cryptography, commonly known as asymmetric cryptography. It establishes security and verifies transactions from one user to another. The working mechanism of asymmetric cryptography starts with acquiring private and public keys in their wallets. 

Once the sender initiates a transaction, it is signed off with the private key, while the receiver verifies the transaction with the sender’s public keySo, this approach emphasizes that the private is only accessible personally, while the public key is what everyone uses for verification. 

Lastly, transparency is the backbone of blockchain technology. It grants its users a unique level of openness, as all forms of transaction data can be viewed publicly but cannot be altered or deleted. You will also discover that information such as the genesis block, sender’s wallet address, and receiver’s identity can be viewed, including the date carried out and a list of other assets owned. Still, there is only a means to get involved if security is breached. 

Understanding Everything About Consensus Mechanisms

The consensus mechanism is like an algorithm that allows users and machines on blockchains to agree and understand themselves in a distributed network system. The mechanism keeps nodes in sync on diverse transactions, ensuring identical ledger copies. 

The consensus mechanism is intended to act as a replacement for the lack of central authorities during the verification of transactions and to maintain transparency. 

However, the task is challenging, even for a digitally operated entity, as there are millions of nodes to keep track of. Hence, to maintain efficiency and prevent breakdown, different types of consensus are designed to operate, bring, and control specific nodes to agreement. 

Types of Consensus Systems

Crypto consensus systems are of various forms, each defining the mode of operation of the crypto project. 

Here are a few common ones:

The Proof of Work (PoW) System

The Proof of Work consensus mechanism verifies transactions and maintains the blockchain’s integrity. It is one of the most used systems among blockchain networks, known for being Bitcoin’s original consensus mechanism.

Dogecoin and Litecoin also adopt the Proof of Work mechanism despite the high level of calculations involved with it. This computation is necessary to tackle complicated mathematical problems to successfully perform a process known as mining.

The Proof of Stake (PoS) System

Proof of Stake is another consensus system that enhances the security of blockchains but maintains a staking requirement before valid transactions can be made. 

The PoS system is an alternative option to PoW, which has gained significant attention in cryptocurrencies. Notably, the Ethereum network (ETH) adopted the PoS system a year ago, leaving behind the PoW system to improve its applications. 

In the PoS system, validating transactions is based on two primary tasks. The first is generating new blocks and then validating their peer-to-peer smart contracts. Also, the system has a reward system to incentivize users who complete their tasks on time. 

Other known Consensus algorithms

Other consensus algorithms are existing aside from the Proof of Stake and Proof of Work systems. Some systems are hybrid PoS and PoW, while others use an entirely different mechanism.

A delegated Proof of Stake (DPoS) system is an excellent example of a hybrid algorithm. This system typically functions like the known PoS, but in this case, token holders decide who creates new blocks on behalf of the validators.

Another example is the Proof of Authority (PoA), where validators are chosen based on their trustworthiness rather than the amount of crypto assets they possess.

Blockchain Advantages

Transaction Visibility

Blockchain participants are at an advantage to view all transactions done on a blockchain. This transparency helps them to monitor and verify transactions with accuracy.

Efficiency and Speed

Using paper processes can be time-consuming and susceptible to human mistakes. Other times, they might require the support of a third party. However, blockchain transactions streamline this process, eradicating the delay while providing additional efficiency.


The presence of smart contracts in this system helps to automate transactions, which also contributes to the speed and efficiency of the process. Regarding insurance, for example, a customer could file a claim after providing the vital documentation. Through smart contracts, the company can automatically settle and pay the share.

Types of Blockchain Networks

Private blockchain network

Private blockchain networks are owned and run by a single institution, keeping them away from the public, hence the name. These networks function in permissioned environments with rules to direct the actions, such as writings, performed on the chain. 

While they are not a decentralized system due to their unclear level of control, it’s possible to distribute them since several nodes can save a copy of each one.

Public Blockchain

Public Blockchains are exclusively open to all users to join and participate. There is no permission required as the information on them is open source and transparent. 

Bitcoin is the oldest member of the public blockchain, with Ethereum joining in as another example. 

Hybrid Blockchain 

As the name implies, hybrid blockchains are a combination of both public and private blockchains. There are companies and private firms that may want access to the two technologies. So, they inculcate both systems, enabling them to control what data should be revealed and which stays confidential. 

However, they create a room for requests to be made when individuals wish to access the private areas of the system. Notably, user data is protected when they join such a blockchain unless in cases where they have to perform transactions and reveal their identities.

Consortium Blockchain 

These are similar to the hybrid blockchain as they combine both public and private blockchains. But this type is different in its multiple-member collaboration. 

Known to some people as the federated blockchain, the consortium blockchain is originally a private system that houses more than one controlling entity. Hence, the risk of losing everything with one-member access is eliminated. 

Uses of Blockchain

Several firms have already incorporated blockchain into their operations despite the newness of the system. Here are some areas where this development functions:

Funds Transfer

Transferring funds is a significant and one of the most used applications of blockchain technology, owing to its reduced transaction fee and speed. 

This application is primarily handy for cross-border transactions, which are usually slow and expensive with the traditional transfer means.

Financial Exchanges

Several companies offering access to decentralized crypto assets through their exchange platforms have surfaced rapidly over the past few years.

Through these blockchain-based platforms, participants and users can easily swap different currencies with higher guarantees for security.


Blockchain technology uses smart contracts, allowing lenders to perform collateralized loans. Some of the possible events with this application include a margin call, service payment, release of collateral, and complete loan repayment.

Verdict – What’s the Fate of Blockchain Technology?

There is no limit to the future of blockchain technology, and recent developments are why we are getting closer to better-decentralized systems, higher transaction transparency, and more.

This technology also has the potential to meet up with the increasing demands of various institutions and financial firms alike. As such, it will always provide support when addressing challenges in the ever-evolving world of digital money.


What is the simplest definition of blockchain to a beginner?

What is a blockchain example?

Can I develop my blockchain?

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Asad Gilani Crypto Editor

Asad Gilani Crypto Editor

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