Demystifying Blockchain: A Comprehensive Guide for Developers

Blockchain development

You must have heard “blockchain” a million times before, mostly in conversations about quick money, but do you know clearly what exactly it is? Is it a coin? How is it different from Bitcoin? What is it that distinguishes it from the banking system? Well, if you don’t know, don’t worry; by the time you are done reading this article, it will not remain a buzzword for you.

So whether you are an experienced developer who has to venture into blockchain-based applications or an inexperienced developer wanting to explore the possibilities and offerings of blockchain. This article, will be understanding in depth what exactly blockchain is, what its benefits are, why there is so much hype about it, how it works, etc.

We’ll delve into practical aspects such as tokenization, security considerations,

consensus systems, smart unalterable and immutable ledgers keeping the original data intact, decentralization, peer-to-peer nature, smart contracts, etc. 

And if you are some business entity reading this piece of writing and getting fascinated by the game-changing possibility of blockchain, you can always hire blockchain developers to get these functionalities implemented in your app or website.

So, without further ado, let’s delve into the blog post, dissecting exactly what blockchain is.

What Exactly is Blockchain?

Blockchain technology is a kind of dispersed/shared ledger/advanced database that records data in blocks that are actually linked in a chain, which actually forms the name “blockchain.” It is famous for transparency and security within the network. In the ledger, the data is accounted for as it occurs, or, you may say, in a sequence or order of time that can’t be altered or immuted until the connection is made to the network.

This decentralized nature makes it a popular choice for creating immutable, unmodifiable, and unalterable ledgers that can track entries such as orders, payments, accounts, other transactions, etc. Due to the immutable nature of the ledger, there is no room for unauthorized transaction entries, making it highly reliable for transaction-related stuff.

Fundamentals and Key Components of Blockchain

  • Blocks: A block in a blockchain is the basic unit of data, just like a cell is the basis of life in the human body. It actually contains a list of records of transactions along with a reference to the previous and next blocks, which is kind of creating a chain.
  • Chain of Blocks: The chain of blocks creates the whole blockchain structure. Each block is linked to the previous one through a cryptographic hash, creating a sequential and immutable record of the transaction. This chaining is what ensures the immutability of the entire transaction history.
  • Cryptography: In the realm of blockchain, cryptography is the component that has the job of ensuring secure translation and controlling access to the blockchain network.
  • Smart Contracts: Smart contracts have some predefined rules encoded within them that are self-executing upon meeting certain conditions. They automate and carry out the terms of agreements, which facilitates trustless and fast interactions on the blockchain.
  • Nodes: Nodes are individual computers that participate in the blockchain network. Full nodes store the complete history of the blockchain, while lightweight nodes rely on others for information. All the nodes in the network collectively maintain the network and validate transactions.
  • Wallets: Digital wallets are actually tools that users use to store and manage their cryptocurrency holdings. These are both software-based (online and offline) and hardware-based (physical devices).
  • Decentralized Applications (DApps): Like every network that has software running on it, decentralized applications, or DApps, are the ones that run on a blockchain network. There is the notion of smart contracts, which these DApps use to ensure transparent functionalities.
  • Decentralized Network: Unlike traditional centralized systems, a blockchain operates on a decentralized network of nodes, which are actually computers operating all the time. This decentralization in the fabric of blockchain helps it to ensure security, resilience, and transparency.
  • Consensus Mechanism: So there is a protocol in blockchain that if there has to be something done that is unusual and out of the norm, there should be a mutual consensus of big parties. 

How Blockchain Works

We are giving you a quick walkthrough of how blockchain works, but in reality, it is quite intricate to understand.

  • Creation of Block: When there is a transference of physical or digital assets from one party to another in the network, that is taken into account with details like parties involved in the transaction, timing of the transaction, location of the transaction, how much the asset was worth, etc.
  • Consensus System: For a transaction to be marked as valid, there must be a consensus of the majority of the nodes.

Why Blockchain was Needed in the First Place

The concept of banking has never been liked; it operates where there is a centralized party at the helm. Conventional database technologies have a lot of loopholes when it comes to recording financial transactions. Banks as a centralized party are notorious for further complicating things; if that centralized database is compromised, the stakes to suffer are colossal. In blockchain networks, trust- or fraud-related issues do not exist, and there are no chances of legal issues.

Blockchain, being invulnerable and decentralized, has records and data dispersed or scattered. In the blockchain mechanism, there is a dedicated ledger for every buyer and seller, and all the transactions have to be approved by both parties and are lodged in the system automatically.

Blockchain is at the forefront of keeping information as it is in reality; it is an ideal mechanism for the information that has to be transparent, accurate, and unedited or changed. The application of blockchain networks is tracking orders, advertisements, accounts, credentials, production, and so much more beyond financial stuff.

Advantages and Benefits of Blockchain

  • Decentralized System: As there is no centralized system, there are many stakeholders as it is a members-only network. Here, you can assure yourself of correct, chronological, and fast data and confidential blockchain records are only with parties to whom you have granted permission.
  • Smart Contracts: There is a concept of smart contracts in blockchain, which are actually rules that are predefined, and by meeting these rules, the records are stored that literally expedite transactions.

Blockchain vs. Banks

Both blockchain and banks are on opposite ends of the financial spectrum; let’s take up different aspects and learn how different they are.

  • Hours Operating: Conventional office timing, i.e., between 9 and 5 during weekdays and for limited hours on weekends, while the blockchain mechanism or system has no set hours, is functioning 24/7 all days of the year.
  • Transaction Fees: Varied on card payments, between $1 and $30, depending on your bank. Bitcoin has some varied fees too, which are between $0 and $50. But people have the liberty to decide how much of a determined fee they want to pay, creating an open market.

The difference between a Database and a Blockchain

Blockchain, though, is a ledger/database management system that has some features that make it a more regulated and authentic record-storing ledger. Conventional databases can be altered or modified, which doesn’t make them trustworthy. On the other hand,  blockchain is a decentralized system where there is the involvement of multiple parties. 

Don’t forget to check out: Understanding The Business Case For App Development


Blockchain is awaiting a real use case, and there are so many controversies around its legalization and adoption. Lately, companies have started showing their inclination toward blockchain. The potential of blockchain for all kinds of development is huge. As it provides so many ways to secure and make your applications more advanced. To get blockchain aspects implemented in your app, you can hire blockchain developers who can implement things like smart contracts, secure payment gateways, transparent recording of data, etc.