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Distributed ledgers, a system on which blockchains are based, have been used for managing data at the industry level for several years. The public was first exposed to them through bitcoin, which is why they have only lately grown in popularity and attention. Credit goes to Satoshi Nakamoto, a name we are all familiar with.

The blockchain is his greatest invention, and most people credit Satoshi for developing Bitcoin. Blockchain promises its users opens up new channels for decentralized business value exchange, avoiding data manipulation, safe transfer of assets and reorganizing tracking procedures.

What is Blockchain?

A blockchain is a digital log of the transaction history. It is a global network kept up by tying together numerous computers, or “nodes,” all around the world. All the relevant data is examined, stored in a block, given a different hash, and chained together in chronological sequence to create an immutable record of each transaction.

Additionally, the blockchain network’s users exchange transaction data. Also, the parties can trace an asset’s origin and ownership history.

Simply put, it is a cryptocurrency ecosystem that acts as a digital ledger that contains records of all transactions. The system keeps track of every transaction and makes it accessible to the public in chronological order. But not all blockchains are the same.

Private and public blockchains, sometimes referred to as permissionless and permissioned, are the two main types of blockchains. Even though they are both decentralized, there is a key distinction between them.

It’s essential to comprehend the variations between public and private blockchains and the types of choices you could make while constructing a blockchain solution.

What are Private Blockchains?

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A single central organization controls private blockchains. It works by limiting interaction in the network through access limitation. It is a closed-network permissioned blockchain with severe restrictions like who can access the network, validate a transaction, and operate a shared ledger. This makes the network partially decentralized.

Private blockchains are most suitable for corporations and companies that want to use blockchain internally and where only specific members are involved in Blockchain networks. That also means that this kind of network requires proper authentication before anyone can use it, which is also one of its best features.

Difference Between Public and Private Blockchains

A public blockchain, without permission, typically allows participation from everyone. Participants can engage in the network using false names or alpha-numeric addresses. They don’t have to disclose their identities and, without meeting any prerequisites or submitting any personal information, can participate in the network.

On the contrary, the operator of a private blockchain has a single authority operating it. The administration has all rights to overrule, amend, or remove records on the blockchain and select the participants.

Both private and public blockchains use consensus to verify a transaction with varying approaches. Public chains use the proof of work mechanism to validate transactions in which miners use their computational capacity to solve complex cryptographic puzzles in exchange for cryptocurrencies.

Proof of work is a time-consuming procedure. As a result, transaction speeds are slow, and electricity prices are high. In contrast, the selective endorsement is typically used in private blockchains to reach consensus. This consensus allows the construction of blockchain with a more modular structure, allowing for a higher volume of transactions at faster rates hence saving time.

Though all blockchains are decentralized systems, a public blockchain is more decentralized than a private blockchain, making it more secure. Due to the involvement of several nodes in the network, it is challenging for scammers to assault the system and take over the consensus network.

Data breaches and manipulation are more likely to occur on a private blockchain. Bad actors can quickly put the entire network in jeopardy. As a result, it is less secure. Data breaches and manipulation are more likely to occur on a private blockchain making it less safe.

Due to the time and processing needed to confirm transactions, public blockchains are slower and often have lower transaction rates. A private blockchain, however, can process significantly bigger transaction volumes at faster speeds with much fewer processing resources because of selective endorsement.

These were some of the distinctions between public and private blockchains. We must continue with our guide, which primarily focuses on private blockchain.

One should opt for a private blockchain because of the better degrees of privacy protection it provides. Secondly, it is energy efficient and can save high electricity costs, which is a big issue in public blockchains. Thirdly, Private blockchains are less volatile because they are constantly regulated by the organizations who own them.

The purpose of a private network is to strengthen business organizations and emphasize an organization’s overall advantages. Therefore, it is evident that it will guarantee higher revenues and boost a company’s total growth.

Pros and Cons of Private Blockchains


Although it has a smaller user base, private blockchain nonetheless has several practical capabilities, which are as follows:

Private blockchain operates on a closed database protected by cryptographic principles and the organization’s requirements. Without authorization, nobody can operate a full node, conduct transactions, or validate or authenticate blockchain modifications.

The number of users is lower since private blockchains start with a smaller network. Reducing downtime and maximizing uptime makes it simpler to manage their ecosystem.

In view of the fact that only a small number of users have access to specific transactions, private blockchains are unquestionably a more reliable network alternative.

Because nodes are assigned to certain user groups, they offer excellent stability for users to operate the network. Additionally, due to lesser nodes involved, their performance is greatly enhanced, and transactions are made simpler.

Due to the limited participation of users, private blockchains can execute more transactions per second. As a result, reaching a consensus takes less time.

This network is restricted and subject to a stringent authentication procedure; thus, the possibility of illicit conduct is decreased, and any malicious network entry can be ruled out.

To make transactions simple, private blockchains adhere to and implement all rules and standards within their ecosystem.


Private blockchains do not have widespread use. Instead, they are designed to carry out particular activities and responsibilities.

Private blockchains are vulnerable to security issues such as data breaches. This is because just a small number of validators are often utilized to come to an agreement over transactions and data.

Unless an administrator may make adjustments, there may not be agreement; instead, the entered data is immutable.

A blockchain for an organization requires a significant investment in hardware infrastructure.

Centralized authority is a major drawback of private blockchain due to the fact that the rules are set by a single individual or group of individuals.

Need for Private Blockchains

Most firms possess extremely sensitive information that must remain private. Because it only permits optional users to access the data, private blockchain technology would be the best option for companies who wish to ensure that only trustworthy parties have access to their data.

Public blockchains’ poor scalability and limited transaction throughput are significant problems. This occurs because “proof of work” requires miners to solve mathematical problems in order to validate a transaction. As additional blocks are generated, the scalability and transaction suffer.

The majority of large enterprises demand faster processing rates as well as significant levels of scalability, and transaction private blockchain is an excellent solution for such applications.

Use Cases of Private Blockchains

When existing technologies have failed to address issues of low trust among cooperating groups, private blockchain can. Any enterprise can adopt a blockchain platform and use blockchain-enabled technology to maintain integrity and foster trust.

Supply Chain

The globalization of the supply chain has brought new issues, including a lack of confidence in data sharing between businesses. Private blockchain technology enables companies to trace the supply chain from beginning to end with more accuracy and transparency.

It is doing so by introducing a morally acceptable supply chain which has enhanced contracting skills and enables customers to make more thoughtful decisions. Additionally, automation and openness will improve international contracts and trades while also lowering costs.

Real Estate

Undoubtedly, the real estate market is hectic because of dispersed activities, criminal behaviour, tedious paperwork, financial costs, and the potential for fraud.

Private blockchain enterprises can benefit the real estate industries by giving individuals ownership, safeguarding transactions, and eliminating any inherent criminal issues.

Data fragmentation, a delay in interactions between participants, and a lack of interoperability are problems in the healthcare industry.

A private blockchain can effectively ensure the integrity of the medicine supply chain at the same time, can assist in protecting patient privacy and providing access to physicians with the patient’s permission.


The competitive ecosystem in the e-Commerce sector is based on the purchasing power of consumers. Customers are now more interested in knowing how and where the products were created.

Smart e-businesses pay attention to the demands of their customers and aim to protect the environment, select reputable local producers, and offer facilities to their staff.

Blockchain technology has advantages for both online retailers and customers. It may verify and authenticate data exchanges, stock management, and other commercial operations. Additionally, batch quality control findings posted on blockchain increase consumers’ trust in the products being sold.

The insurance sector consists of numerous organizations that provide services for business, life, casualties etc. Insurance helps safeguard customers’ unexpected loss of property, be it a cherished pet or house.

Insurance industries have to deal with challenging situations such as contract concerns, fraudulent claims activity, third-party transactions and a complicated web of relationships, including those between the insurer, the insured, and organizations.

Insurers must analyze data carefully and communicate data that is supported by evidence. The insurance industry’s central hub might benefit from the automation of claims processing, cost reductions, and fraud reduction provided by a private blockchain.

Private blockchain technologies prevent data centralization among several parties without compromising privacy or sovereignty. Additionally, blockchain makes sure that every transaction is timestamped and immutable. The data cannot be changed, preventing any vulnerabilities.

One important thing about the insurance sector is every contract must be updated in view of any legal modifications, and the insured party must be informed of the changes’ full scope right away. This is not only just time-consuming since an email must be generated but also vulnerable to fraud in particular.

Blockchain technology can assist in eradicating these sources in the insurance sector using an unchangeable ledger. This will benefit the stakeholder as well as provide cost efficiency.


Healthcare is a business where numerous parties must effectively work together, resulting in thousands of data transfers. This calls for additional security to handle patients’ healthcare records since their unauthorized disclosure puts fundamental rights and freedoms at serious risk.

Another essential objective of the healthcare sector is to integrate and enhance the flow of data. Blockchain-based solutions can assist in increasing data sharing trust while removing interoperability issues.

IoT and Blockchain Technology

The largest problem facing cities right now is developing interoperable data processing technologies to automate appropriate statistical procedures. It’s crucial to gather reliable data from sensors in a secure manner for this reason.

All components of the IoT ecosystem are vulnerable to attacks. For instance, home appliances could be made to fail more quickly so that they could be repaired by warranty conditions of the manufacturer.

Utilizing private blockchain technology makes it possible to verify and check transmitted data as well as achieve data integrity, which is the primary goal. These characteristics make it possible to mitigate risks so that the affected parties can exercise their legal rights.

Companies That are Using Blockchain Technology

Hyperledger Fabric

Hyperledger Fabric is an open-source blockchain architecture used to create apps with data consistency and permission control. It provides a particular consensus method that permits efficiency at scale while protecting anonymity. Due to these characteristics, it is appropriate for businesses engaged in supply chain tracking and incentive programmes.


For the purpose of tracing the origins of its products, Walmart has created a blockchain platform based on Hyperledger Fabric.

With the use of the blockchain, suppliers can safely post certificates of legitimacy to the ledger, increasing system trust and allowing businesses to quickly identify the source of a product rather than having to wait for several days or months for it to happen.

De Beers

De Beers has established a “safe and immutable chain” to confirm the origin and authenticity of diamonds using a private blockchain.


Xage is the first cybersecurity platform for IoT businesses in the production, transportation, and energy sectors. It utilizes blockchain technology to handle billions of devices, defends industrial IoT processes from cyberattacks, and has the capacity to self-diagnose and repair potential breaches.


Comcast, in partnership with block graph, has launched a blockchain system that enables marketers to target viewers with relevant advertisements while respecting viewers’ privacy.


Mediachain has built several technologies that will help in endeavours, such as using a decentralized blockchain database system to link the application to media. In an effort to create a more equitable, open, and lucrative music industry for musicians, Spotify bought blockchain company Mediachain.


OpenID is a blockchain network for the insurance sector’s quick, safe data collection and exchange. The project’s foundational technology, Hyperledger Fabric, enables the genuine, automated, protected, and authorized collection and sale of sensitive data while still retaining data ownership.


TrustChain, a Hyperledger Fabric-based blockchain, is revolutionizing the jewellery industry. It keeps track of and verifies the authenticity of jewellery, diamonds etc., from its origin until it gets into customers’ hands. The project removes pain points by creating faster, more precise, and more affordable methods of selling precious stones.


BurstIQ enables the secure exchange of sensitive medical information between patients and physicians using smart contracts that define the limitations of what data may be exchanged.


Propy uses blockchain technology to speed up real estate deals and reduce the chance of fraud.


DHL, a global leader in shipping and one of the biggest shipping businesses to adopt blockchain, is leading the way in logistics powered by blockchain. It uses blockchain technology to ensure the authenticity of transactions and keep track of shipments in a digital ledger.

JP Morgan and MetLife

JP Morgan and MetLife are utilizing blockchain to step up the process of verifying transactions and contracts.


Private blockchains are decentralized ledgers that can only be accessed by people who have been given explicit authorization to have particular access levels or capabilities. Private blockchain specifically overcomes issues of low trust between cooperating entities.

It adds transparency, better protection, and immutability while removing the underlying burden from transaction validation. Organizations that wish to fully utilize blockchain technology without revealing their sensitive data are best suited for private blockchains.

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