What is Blockchain Technology? How Does Blockchain Work?

Did you know you could work in the US, get paid there, and send money to relatives in, say, Thailand within minutes? This has been made possible by blockchain technology. It is touching all industries and transforming finance and supply chains in particular. Developing countries are lapping up blockchain-based finance and writing new chapters in financial inclusion. This post will give a comprehensive view of this game-changing technology, its uses and how it works. Keep reading.

What is blockchain?

Blockchain refers to this distributed database used by various nodes of a particular computer network. In a nutshell, this technology has been widely known due to its contribution towards ensuring a secure and unalterable ledger of transactional operations executed on cryptocurrency platforms. Blockchain is also capable of securing data in every domain beyond that of digital currency. Immutability is what gives blockchain its worth – as soon as a block is entered into the chain, you cannot alter it. This aspect of blockchain eradicates the necessity of expensive and erroneous human auditors.

How Does a Blockchain Work?

A blockchain can be understood as a ledger to store information. However, its structure and accessibility differ fundamentally from traditional data management systems.

The blockchain records transactional information into blocks. Each block assumes a similar role to a cell in a spreadsheet containing relevant data. Subsequently, once a block is filled, its content is passed through an encryption algorithm, creating a unique hexadecimal number known as the “hash.” 

The resulting hash is integrated into the header of the following block and intertwined with the other pertinent information in that block. It creates a chain of blocks. Thus, trying to change one block affects the entire blockchain, making it unfeasible for fraudulent activities. 

Blockchain decentralization

A blockchain spreads data across multiple network nodes, comprising computers or devices that use the blockchain software. Any attempt to modify a record would be prevented by other nodes connected to the network. This decentralization enables data redundancy and ensures its accuracy. 

The widespread data storage across the network nodes enables the blockchain to create an immutable and irrefutable record of information. Primarily used for transactions in cryptocurrency, a blockchain can also store other vital information such as legal contracts, company inventories, and state identifications, among other data types. The distributed nature of the blockchain enables it to create a permanent record of data, which is secured through encryption and can be automatically verified or audited through computer algorithms.

Blockchain Transparency

The decentralized nature of the blockchain provides a high level of transparency, allowing all transactions to be openly viewed through personal nodes or blockchain explorers. This feature of blockchain technology has proven particularly useful in the case of hacking incidents that have resulted in significant cryptocurrency losses. Although hackers often remain anonymous – except for their public wallet address – the digital assets they have stolen can be traced via the blockchain.

However, despite the high degree of visibility the blockchain offers, the data recorded within it remains encrypted and, therefore, secure. This means that personal identities remain shielded from public view, ensuring anonymity while maintaining transparency in the system. Consequently, blockchain technology offers a unique balance of transparency and privacy in digital transactions.

Is blockchain secure?

Blockchain technology is reputable for its ability to offer a decentralized approach to security and trust. It operates by storing blocks chronologically and linearly.

A salient feature of blockchain security and trust is rooted in the hashes of each block, which are unique identifiers of the contents within a block. The slightest modification to any data within a block alters its hash, affecting the subsequent blocks in the chain. As a result, the network would reject any block that has been tampered with, as the hashes of these blocks would no longer be aligned. Thus, altering the blockchain requires computational power and resources that make it virtually impractical, increasing its security and trustworthiness.

Bitcoin vs. Blockchain 

In 1991, Stuart Haber and W Scott Stornetta first introduced blockchain technology as a means for authenticating the time-stamping of documents. Nevertheless, it did not happen until the introduction of a Bitcoin product in January 2009, when we saw the first practical use of a blockchain solution. It is a revolutionary tech built on the Bitcoin protocol, introduced in a research paper written using the pseudonym Satoshi Nakamoto. This is called a “peer-to-peer electronic cash system without a trusted third party”.

 However, Bitcoin adopts blockchain technology in an open and public way of recording a ledger of payments or transactions among some actors. A smart contract is a code of agreement between two or more parties that runs on blockchain. Such contracts could completely change many industries since they will cut down on expenses, improve productivity, and increase safety. 

 Banking Vs. Blockchain

AspectTraditional BankingBlockchain Technology
IntermediariesMany intermediariesDirect peer-to-peer
TransactionsTime-consumingFaster and efficient
TransparencyLimited transparencyHigh transparency
SecurityRelies on security protocolsStrong cryptographic security
TrustTrust in institutionsTrust in the technology
FeesVarious feesLower transaction fees
AccessibilityLimited access for unbankedGlobal accessibility
Record-keepingCentralized ledgersDistributed ledgers
Speed of SettlementSlower settlementsNear-instant settlement

How are blockchains used?

Cryptocurrencies are not the only thing that blockchain technology supports. Blockchain technology is increasingly catching up with many firms in diverse segments of business enterprises through the storage and management of transactional data. Some major corporations such as WalMart, Pfizer, AIG, Siemens and Unilever have already started using this new technology.

For instance, IBM’s Food Trust blockchain is tailored for tracing the movement of food items from source to end-destination.

This helps companies locate other products and sources that may have contacted a specific one. It allows detection of any potential hazard way before time. This could prevent the occurrence of avoidable life and other related illnesses in the long run.

Banking and Finance
Adopting blockchain technology in the banking industry promises enormous gains. Unlike other financial institutions, the blockchain banks are open 24/7.

Settlement and clearing of transactions between banks has become time-consuming because it involves a huge number of transactions.  Nevertheless, blockchain would enable such transactions in seconds or minutes.

 Additionally, banks’ use of the blockchain helps them transfer money quickly and securely among the institutions. This considerably minimizes time costs and risk expenses incurred while transporting. This is particularly important considering the huge funds that are at stake.

Also, stock traders find global settlement and clearance a lengthy exercise that may take three days or more. In this case, the money and the shares are held back. Transit time for stocks could be significantly reduced through blockchain, leading to a more efficient stock trade.

What is IDO Launchpad, and Why Does Blockchain Use It?

IDO has turned out to be an indispensable source of funding for fledgling cryptocurrency-related businesses. IDO helps in smoother token sales and providing early access for potential buyers. That is why, for example, users can carry out an IDO on crypto projects and get a chance to become early investors. One of those crypto launchpads – AdLunam- lists forthcoming projects with strong upside potential looking to crowdsource capital.

Pros and cons of blockchain

Although blockchain technology comprises one of the most sophisticated systems with infinite capabilities for non-custodial storage. This revolutionary invention has its weaknesses though, as is the case with all technologies. It is time now to consider the benefits and drawbacks of this technology.


  • It offers increased accuracy as it doesn’t require human verification whose accuracy can never be guaranteed.
  • Eliminating third-party verification as a means of cost reduction.
  • Decentralization ensures that nobody can modify the information since no single party can control such delicate digital possessions.
  • It enhances financial inclusion in countries with low banking populations.
  • The real-time transactions suit businesses interested in improving supply chain management and eliminating fraud.


  •  Some users may find prohibitive technology costs to buy or rent.
  •  Low TPS may render for high-volume applications.
  • Cybercriminals exploit blockchain and conduct drug business money laundering on the dark web.
  • Operational or legal challenges may result due to regulatory uncertainties in blockchains. 

Benefits of blockchain

  • Accuracy of the Chain
  • Cost Reductions
  • Decentralization
  • Efficient Transactions
  • Private Transactions
  • Secure Transactions
  • Transparency
  • Banking the Unbanked 

What is blockchain in simple terms?

Briefly, blockchain is a networked and safer data system for storing transaction data and other relevant information in a string of blocks. Within each block of information lies a link or a chain to the preceding one created through advanced cryptography. This generates a permanent record that is identical on every node present in the network. Decentralization and replication of the database make it almost impossible to fudge or temper the information contained in the networks.

How many blockchains are there?

The growth in the number of blockchains has been ever-increasing since their establishment. Currently, there are about 23000 crypto coins available built on blockchain platforms in the year 2023. However, there are also other non-cryptocurrency projects based on Blockchain technology. 

Also, read About How to launch a new cryptocurrency.

What’s the Difference Between a Private Blockchain and a Public Blockchain?

There exist two distinct types of networks: public and private. The first is also known as open or permissionless, which allows people who want to take part in the network to set up any node freely. To protect the public blockchains with open membership, they need to use a variety of encryption techniques like PoW.

 The second, called public or uncommissioned blockchains, requires every node to be validated before being admitted onto the network. These authorized nodes are trusted and, therefore,e reduce the many layers of security that would have occurred in a public blockchain. However, permission blockchains might differ from the public ones in governance structure, privacy setting, and dApp development.


Blockchain has potential applications in various industries, from finance to healthcare. So if you’re interested in exploring the possibilities it presents further, the time to do it is now! Take a look around–join a forum or study group, or better yet, go ahead and give it a try. With its revolutionary architecture and open-source distributed framework, blockchain tech could potentially revolutionise how we store data securely. 

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