Blockchain Journalist: Understanding Blockchain Technology

What is Blockchain?
A structure called Blockchain is utilized to establish a network for storing transaction records as blocks on multiple databases known as chains. The recording of data through blockchain guarantees that the system remains unaltered and secure from potential cyberattacks, as the technology behind blockchains involves duplicating and distributing transactions across multiple computers in the same network.

---

Source

---

To guarantee that a transaction recorded on this ledger has not been tampered with requires the approval of the owner's digital signature. Additionally, information stored in a digital ledger is highly protected for security purposes.

To Simply Explain:• The digital ledger resembles a Google sheet available for sharing among different computers connected through a network where one can store real purchase transactions. What makes it so captivating is that anyone can see the information without being able to alter it.

How is Blockchain Used?
While cryptocurrencies help to store information on monetary transactions in blockchains, they can also hold various records such as product tracking and miscellaneous data. This means that food items can be followed throughout their entire journey from starting point to final stop. This helpful piece of information makes it easy to trace the source of a contamination outbreak, while multiple options exist within blockchain technology for organizations to secure critical information.

Why is Blockchain Popular?
Consider the situation where you need to transfer funds from your personal bank account to any member of your immediate circle. The process of making an online fund transfer involves logging into your bank portal and transferring the amount to another person’s bank account using their provided digits. The completion of a successful transaction will prompt an updated record to be generated by your banking institution, and this looks like an effortless job. Right? Most of us do not give due consideration or attention to the potential issues.

Tampering fast with this type of transaction is possible. Third party payment applications became popular because individuals who are familiar with this reality hesitate to utilize such transactions. Nonetheless, Blockchain technology came into existence mainly due to such vulnerabilities.

Lately there has been much focus on the blockchain technology being used as a digital ledger, and how come it's gained so much popularity? Let's dive into the topic and gain a complete understanding.

Proper data recording as well as effective transaction processing represent critical components for any successful business operation. Typically these functions are conducted internally or via third party intermediaries such as brokers or legal representatives resulting in increased expense and implementation delays. However, the use of blockchain technology expedites the entire process while minimizing costs.

People often make the mistake of thinking that Bitcoins and Blockchains are synonymous when in fact they present quite a few differences. While Blockchain technology has numerous real life application cases in fields such as finance, supply chain and manufacturing, Bitcoin solely depends upon it to function securely.

The emergence of blockchain technology brings numerous advantages to this ever more digitized world. Some examples are;

Highly Secure
To ensure maximum security and prevent fraud cases in every transaction made through this service requires a specific digital signature.

Decentralized System
Transactions conventionally needed approval from regulatory authorities like governments or banks. whereas with Blockchain technology it's the mutual consensus of its users that make them smoother and safer.

Automation Capability
Automatic generation of systematic actions along with events and payments is possible if the preset criteria for triggering it are met.

Structure and Design of Blockchain
Blockchain's essential element lies in its distributed nature combined with an unalterable and decentralised ledger made up by blocks holding sets of data, linking the blocks together with cryptographic techniques creates a chronological chain of information. The security of data in a blockchain can be attributed to its consensus mechanism which enforces transaction validation by nodes prior to their addition onto the chain.

Blocks
The combination of three key elements creates a block within the blockchain:

1. A timestamp with a randomly generated number used for mining and also with hash of previous blocks are included as metadata within the header.

2. Transactions along with smart contracts are situated in a vital part called the data section which is then stored inside of a single block.

3. Lastly, there's the hash that serves as an identifier for the entire block and plays a critical role in ensuring its authenticity.

Block Time
The amount of time taken for generation of a new instance in Blockchain Network is referred to as Block Time. From mere seconds to several hours, the duration for creating a new block varies across different blockchain networks.

When aiming for faster transaction confirmations shorter block times are preferred although there is a greater potential for conflict, choosing longer blocks reduces conflict potential yet elongates confirmation timing.

Hard Forks
When there is a permanent divergence in the history of a blockchain it results in two distinct chains. This problem arises when a modification is made to the blockchain protocol and some nodes do not approve of the update. A hard fork has the potential to create new digital currencies or divide already existing ones and it necessitates concurrence among all members of the network to reach a solution.

Decentralization
The core attribute of blockchain technology is decentralization, and decentralized blockchains operate without a centralized authority controlling the system. Decentralization involves spreading out decision making authority among a group of nodes who work together to validate and agree on which transactions should be included in the blockchain, and transparency along with trust and security are the benefits of the decentralized nature that blockchain technology has. This method offers an effective solution to avoid relying on any single point of failure which ultimately helps reduce data manipulation risks

Finality
The concept of finality in the blockchain world means that once transactions have been confirmed they cannot be undone. After being included in an approved block on the network, a transaction can no longer be altered or reversed. Blockchain Types & Sustainability can be trusted due to the reliability that comes with securing data integrity while preventing double spending scenarios thanks to this impressive feature.

Openness
The fact that blockchain technology is open makes it easy and accessible for anyone willing to join, and it's an open invitation for every individual who wants to be a part of this network. So if you know about consensus rules then you can join in without any hesitation. Openness drives inclusiveness which paves way for greater transparency, and enhanced innovation when more number of people participate.

Public Blockchain
Open to all members of the public for participation in transaction processing and decision making through consensus on its network, as all transactions are publicly recorded in public blockchains they remain transparent.

Types of Blockchain
There are a variety of blockchains;

Private Blockchain Networks
Operating on a closed network is one way in which private blockchains cater to the needs of businesses and organizations. The use of private blockchains enables companies to finely tune the customization of their accessibility and authorization settings along with important security parameters while having just one governing authority manage things.

Public Blockchain Networks
The emergence of Bitcoin and other cryptocurrencies on public blockchains catalyzed the adoption of decentralized ledger technologies, and the presence of public blockchains also means that issues such as security flaws or centralisation can be tackled. Storing information within many nodes throughout the network as opposed to just one central location is achievable through DLT. The use of Proof-of-work and Proof-of-stake are two commonly utilized methodologies in implementing a consensus algorithm to validate information.

Permissioned Blockchain Networks
Private and hybrid blockchains referred to as permissioned blockchain networks allow specific users special privileges. This type of blockchain setup allows organizations to have a better structure in place as to who can participate in their networks and how they can transact.

Hybrid Blockchains
Hybrid blockchains result from the incorporation of both private and public blockchains, and they offer an interesting mix of openness and privacy where certain aspects of the blockchain may be visible to all while other parts are exclusive to approved members. When both openness and confidentiality are needed in certain scenarios then hybrid blockchains are the best fit. Specific information can be accessed by different entities in supply chain management but confidential data is not shared and remains private.

Blockchain Layers
The practice of stacking multiple chains on top of each other is known as Blockchain Layering. Each layer has the potential to possess its individual set of rules and functions while operating on a separate consensus mechanism which is capable of interacting with all the other available ones. Transactions can be executed simultaneously on multiple layers to achieve higher scalability. With its innovative approach to facilitate quicker and cheaper transactions through payment channels established between users atop of the Bitcoin blockchain lies the Lightning Network as a second layer solution.

In conclusion
The blockchain technology could be quite complementary to a future world with both centralized and decentralized models. The blockchain is a new technology that initially disrupts, and over time it can promote the development of a more integrated ecosystem that includes both old and new approaches.