Blockchain Technology: How Does It Work?

Blockchain Technology

A digital asset’s transaction history can be stored in a distributed ledger called a blockchain. Transparency and immutability are provided via its decentralization and cryptographic hashing. Simply connecting new data blocks to the pre-existing ones creates a chain. This is why we refer to this system as a “blockchain.”

Every blockchain transaction must be approved by the owner using a digital signature. The transaction is verified and protected from being tampered with. This ensures the safety of all data stored on a blockchain.

What is Blockchain Technology?

Imagine blockchain as a collaborative Google Doc. When a document is shared among several users, it is not replicated or given to every user. Instead, it establishes a decentralized distribution network that enables multiple parties to access it at once. Although anybody may view the information and add to it, no one can alter or modify any information that has already been entered. This is where blockchain differentiates from Google Docs.

You may comprehend three characteristics of blockchain technology through this example.

  • Distributing digital materials as opposed to copying or transferring them
  • The asset offers immediate access to all relevant information because of its decentralized structure.
  • The integrity of the document is preserved by a transparent ledger that records all modifications, which gives the digital asset credibility.

Today, there is a widespread misperception that Bitcoin and blockchain are synonymous terms that may be used interchangeably. The main technology supporting several applications across industries including manufacturing, supply chain, etc. is blockchain. In contrast, Bitcoin is a cryptocurrency whose existence depends on blockchain.

The benefits of blockchain

The process of exchanging currencies is pretty simple. You sign into your Internet banking system if you want to send money to your buddies. After that, you enter the recipient’s account number to send the money to them. Your bank makes the necessary modifications to its records as soon as the transaction is finished.

The security of Internet financial transactions is constantly under threat. People who are aware of the risk avoid making these transactions, which promotes the emergence and growth of a decentralized ledger.

An important component of the business is maintaining records of all transactions and data. Small businesses and organizations perform these transactions themselves, but as they expand in size, they outsource this duty. These transactions are handled by bankers, brokers, and attorneys, which increases the time and expense associated with each transaction. Blockchain enables simple money transfers and eliminates additional fees. Blockchain is now widely used because of this.

The use of blockchain has three key benefits.

Highly secure: Blockchain enables safe and secure transactions by using a digital signature. It is impossible for anybody to damage, destroy, or edit any information block without employing that precise digital signature, thanks to this digital signature.

Decentralized system: For transactions to be authorized and authenticated, banks and financial institutions need regulatory authorities’ consent. Contrarily, all blockchain transactions are carried out with the consent of all users, leading to smoother, safer, and faster transactions.

Automation-ready: Because blockchain is programmable, it can create events, activities, and payments automatically in response to a trigger.

How does Blockchain work?

The three core ideas that makeup blockchain are as follows:

  • Blocks
  • Nodes
  • Miners


A series of chains made up of many blocks make up a blockchain. Three components make up one block:

  • Information kept in blocks
  • When blocks are constructed, a random 32-bit whole number is generated.
  • A nonce-related, 256-bit hash number having numerous zeros at the beginning.
  • A cryptographic hash is produced by a nonce in the first block of a chain. Unless it is mined, the block’s data is considered to be permanently bound to the nonce.


Blockchain technology is based on the fundamental idea of decentralized data storage for security and access. A blockchain cannot be completely owned by one company or computer system. On the other hand, a blockchain is a distributed ledger that has to all of its nodes connected into a single chain or thread. Any electronic device that can maintain a network’s functionality and copies of the chain can be referred to as a node.

Each node has a unique copy of the supplied blockchain. Any newly mined block is approved by the network for the blockchain for trust, verification, and updating using an algorithm. A blockchain is transparent, allowing you to see and verify every action recorded in the ledger. Additionally, every blockchain user is given a special identifying number that shows their transactions. A check-and-balance system and public data are combined to help the blockchain maintain its integrity and foster user confidence. In other words, a blockchain can be thought of as a trust scalability technology.


A miner can add a fresh block to a specific chain through mining. The hash and nonce for each block in the blockchain are unique. Block mining is difficult, particularly on lengthy chains, because it also makes reference to the hash of the previous block.

Using specialized software, a miner resolves the challenging mathematical problem of discovering nonces that provide an acceptable hash. Since a hash has 256 bits while a nonce has 32 bits, there are approximately four billion possible combinations that might be used. Every modification to a block in a chain necessitates a new round of mining for that block and all succeeding blocks. A blockchain is virtually impossible to manipulate under any of these circumstances. It takes a lot of time and computational power to find gold nuggets. Every node in the network accepts the change when blockchains are successfully mined. A similar pecuniary prize is then given to the minor.

What Makes Blockchain Popular?

Think about a scenario where you are sending money from your bank account to a friend. You must visit the net banking website, log in, and then, after providing the recipient’s information, transfer the desired amount to their account. The bank updates its payment records when your transaction is finished. Despite the fact that it could appear quite simple, there is a serious risk that most people ignore. Anyone who is familiar with the dangers of net banking transactions frequently uses third-party platforms to reduce their risk.

This is the rationale behind the creation of blockchain technology. A distributed digital ledger called blockchain has gained prominence in recent years. The decentralization that blockchain provides is the cause of its growing popularity. A business’s security of data and transaction records is essential. Traditionally, businesses handled this data internally or through third-party bankers, attorneys, or brokers. However, this resulted in an increase in the company’s costs, waiting times, or both. By avoiding this procedure and enabling speedier transaction movement with blockchain, businesses can save time and money.

Today, a frequent misunderstanding is that the terms bitcoin and blockchain can be used interchangeably and as synonyms. This is untrue, though. Supply chain, financial, and manufacturing applications can all be supported by blockchain technology. Blockchain technology is used by the single currency Bitcoin to maintain the security of transactions.

Characteristics of blockchain technology

In the modern digital environment, blockchain offers a wide range of benefits.

1. Highly secure:

Blockchain ensures transactions are completely legitimate by using a digital signature. If a user doesn’t have a digital signature, it is therefore impossible for them to alter, destroy, or delete a user’s data.

2. Decentralized system:

In conventional transaction systems, transactions and permissions are governed by regulatory bodies like banking or governmental agencies. With mutual consent, people can perform transactions thanks to blockchain technology. This guarantees quicker, safer, and more seamless transactions.

3. Automation potential:

Blockchain can be programmed. When the trigger criteria are satisfied, it can automatically produce systemic events, payments, and actions.

Types of Blockchain Networks:

To simplify, let’s look at the four broad classes of blockchains. As these

  1. Private blockchain networks
  2. Public blockchain networks
  3. Permissioned blockchain networks
  4. Consortium blockchains

1. Private blockchain networks

A private blockchain works well for private organizations and corporations since it runs on a closed network. A private blockchain can be used by a company to customize key security features, network characteristics, and authorization and accessibility. A single authority is in charge of private blockchain networks.

2. Public blockchain networks

The development of DLT, or distributed ledger technology, was greatly aided by public blockchain networks. It is where cryptocurrencies like Bitcoin were first developed. Public blockchains make it possible to get rid of important problems and obstacles like data centralization and security flaws. Instead of storing data in one place, distributed ledgers help disperse it over peer-to-peer networks. Any information’s veracity can be checked using a consensus algorithm. The two consensus algorithms that are most frequently employed are PoW (proof of work) and PoS (proof of stake).

3. Permissioned blockchain networks

Another name for this kind of blockchain is “permission blockchain network.” Blockchain networks are essentially private, but they grant authorized members of the public unique access. These networks are typically built up by businesses to make use of both types of networks. Additionally, they provide improved structure when delegating responsibility for network and transaction involvement.

4. Consortium blockchains

Comparable to hybrid blockchain networks are consortium networks. They also include elements for both private and public networks. The main distinction is that numerous different businesses own and operate a consortium blockchain. While initially more difficult to set up, this kind of blockchain eventually offers far more security. A consortium blockchain is additionally designed for multi-enterprise collaboration.

Blockchain’s Pros and Cons:

Like any other new technology, blockchain has both pros and cons.

Blockchain’s Pros:

Undoubtedly, blockchain’s biggest advantage is the high level of security it offers. As a result, it can safeguard and preserve private information exchanged during online transactions. Blockchain offers the answer, even for those looking for quick and easy transactions. In contrast to conventional techniques, transactions done utilizing blockchain technology are finished in a matter of minutes. Another important benefit is that it removes any disruptions from outside sources like financial institutions or the government.

Blockchain’s Cons:

Private and public keys are used in blockchain and cryptocurrency. Reports state that private keys lead to various issues. For instance, regaining access would be difficult in the event that a person misplaced their key. Due to the constrained number of per-node transactions, there are limitations on scalability as well. As a result, it could take many hours to finish a number of transactions and operations. A significant problem is also adding and modifying information after it has been recorded.

Blockchain Investment Strategies:

The uses and potential of blockchain technology are just now being explored by the IT sector and international markets. There is no better moment to start learning than right now if you want to develop your work. Enroll in a blockchain technology training program with Microtek Learning to advance your career.

This is the ideal time to begin working with blockchain technology if you want to. Through an online training course, you may quickly get certified and acquire the skills you need to become an authority in blockchain technology. Join Microtek Learning today to begin your learning adventure.

You might also like

Leave a Reply

Your email address will not be published. Required fields are marked *