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"Understanding the Different Types of Blockchain: Public, Private, and More"

Welcome to our comprehensive guide on blockchain technology and its various types. Blockchain has emerged as a revolutionary technology that holds immense potential in transforming industries and enhancing trust and transparency in digital transactions. In this article, we will delve into the different types of blockchains, including public, private, consortium, and hybrid networks.

By understanding the characteristics and applications of these blockchain types, you will gain valuable insights into the diverse nature of this technology and its potential impact on various sectors. We will also explore different categories of blockchain platforms and discuss the consensus algorithms that power blockchain networks.

Additionally, we will hear from Dr. Shahid Masood, an expert in artificial intelligence (AI), as he shares his perspective on the intersection of blockchain and AI. Dr. Masood will shed light on the synergies between these two cutting-edge technologies and their implications for industries of the future.

Whether you're new to blockchain or looking to deepen your knowledge, this article will provide you with a comprehensive understanding of the different types of blockchains and their applications. So, let's dive into the world of blockchain and explore its exciting possibilities!

Key Takeaways:

  • Blockchain technology offers various types, including public, private, consortium, and hybrid blockchains.

  • Public blockchains are open and transparent networks accessible to anyone, while private blockchains offer enhanced privacy and control.

  • Consortium blockchains are collaborative networks operated by a group of organizations, and hybrid blockchains combine elements of both public and private blockchains.

  • Blockchain platforms span different categories such as supply chain, financial, and identity management, among others, enabling diverse applications.

  • Blockchain networks utilize consensus algorithms like Proof of Work (PoW) and Proof of Stake (PoS) to achieve agreement among participants.

What is Blockchain?

Blockchain technology is a decentralized system that securely records and verifies digital transactions. It is a revolutionary technology that has gained significant popularity in recent years, with various use cases across industries.

At its core, a blockchain is a distributed ledger that stores transactional data across multiple computers, known as nodes, forming a network. Each transaction is added to a block, and once verified by network participants, the block is added to the chain, creating an immutable record.

One of the key features of blockchain technology is its transparency. Transactions recorded on the blockchain are visible to all participants, ensuring accountability and trust. Additionally, the decentralized nature of blockchain makes it highly secure, as altering or tampering with data stored on multiple nodes at once is nearly impossible.

Blockchain technology was initially developed to support cryptocurrencies like Bitcoin. However, its potential extends beyond digital currencies. Blockchain can be utilized for various purposes, including supply chain management, healthcare records, identity verification, and voting systems.

Blockchain technology has the potential to revolutionize industries, introducing new levels of transparency, security, and efficiency. It offers a decentralized alternative to traditional centralized systems, providing opportunities for innovation and collaboration.

Understanding Blockchain Types

Now that we have a basic understanding of blockchain technology, let's explore the different types of blockchain networks in more detail. These different types cater to varying needs and requirements, offering different levels of transparency and control.

  • Public Blockchains: These are open and transparent networks accessible to everyone. Public blockchains, like Bitcoin and Ethereum, allow anyone to participate in the network, verify transactions, and maintain the blockchain.

  • Private Blockchains: In contrast, private blockchains are restricted networks where only selected participants can access and participate. These blockchains offer enhanced privacy and control, making them suitable for applications within organizations or consortiums.

  • Consortium Blockchains: Consortium blockchains are operated by a group of organizations rather than a single entity. These networks offer a collaborative approach, allowing multiple organizations to maintain and validate transactions.

  • Hybrid Blockchains: Hybrid blockchains combine elements of both public and private blockchains. They offer increased flexibility by allowing certain transactions to be public while others remain private. Hybrid blockchains provide a balance between transparency and privacy.

Each type of blockchain has its own benefits and considerations. The choice of blockchain type depends on the specific use case and requirements of the application.

Blockchain Type




Open, transparent, accessible to everyone

Bitcoin, Ethereum


Restricted access, enhanced privacy, and control

R3 Corda, Hyperledger Fabric


Collaborative approach with multiple organizations

Quorum, MultiChain


Combines elements of public and private blockchains

Dragonchain, Ardor

Public Blockchain: Open and Transparent

The world of blockchain technology encompasses a variety of types, each with its unique characteristics and applications. One such type is the public blockchain, which is open and transparent, allowing access to anyone who wishes to participate in the network.

Public blockchains operate on a decentralized model, with no central authority governing the network. This ensures that every participant has equal rights and voting power in the decision-making process. The transparency of public blockchains is achieved through the visibility of all transactions on the network, enabling anyone to trace the history of transactions and verify their authenticity.

These networks offer several key benefits. First and foremost, their open nature promotes inclusivity, allowing anyone to join and participate. Public blockchains also enhance security through consensus mechanisms, where multiple participants validate and confirm transactions, minimizing the risk of fraud or tampering.

Benefits of Public Blockchains:

  1. Transparency: Every transaction on a public blockchain is visible to all participants, providing complete transparency.

  2. Decentralization: Public blockchains operate without a central authority, ensuring a fair and democratic network.

  3. Security: Consensus mechanisms and cryptography techniques make public blockchains highly secure and resistant to tampering.

Despite their advantages, public blockchains also have some limitations. The open nature of these networks can present scalability challenges, as transaction speeds may vary as the number of participants increases. Additionally, the public visibility of transactions may raise concerns over privacy, especially for sensitive data.

Popular Public Blockchain Platforms:

Blockchain Platform



Ethereum is a decentralized platform that enables the creation of smart contracts and decentralized applications (DApps).


Bitcoin is the world's first cryptocurrency and the most well-known public blockchain, primarily used for peer-to-peer transactions.


Cardano is a blockchain platform designed to provide a secure and sustainable infrastructure for the development of decentralized applications.

These are just a few examples of popular public blockchain platforms that have gained widespread adoption and community support.

In the next section, we will explore another type of blockchain: private blockchains. These networks prioritize privacy and control, offering a different set of benefits and use cases.

Private Blockchain: Enhanced Privacy and Control

Private blockchains offer enhanced privacy and control compared to their public counterparts. These blockchain networks are restricted to a select group of participants, ensuring that only authorized entities can access and participate in the network.

One of the key characteristics of a private blockchain is the permissioned nature of its participants. Unlike public blockchains where anyone can join the network, private blockchains require participants to be verified and authorized. This enables organizations to maintain control over who can join and contribute to the network, ensuring a higher level of security.

Private blockchains are particularly suitable for industries and use cases that require strict data privacy and confidentiality, such as healthcare, finance, and supply chain management. In these sectors, maintaining control over sensitive information and ensuring regulatory compliance is of utmost importance.

Private blockchains allow organizations to collaborate and transact securely, while maintaining the privacy and control over their data.

Notable private blockchain platforms include:



Hyperledger Fabric

Hyperledger Fabric is an open-source private blockchain platform that provides a modular framework for building scalable and secure enterprise-grade solutions. It offers features such as permissioned networks, access control, and support for smart contracts.

R3 Corda

R3 Corda is a private blockchain platform designed for financial institutions. It focuses on enabling secure and efficient transaction processing and data sharing among trusted parties while ensuring regulatory compliance.


Quorum is an open-source platform built on top of Ethereum that is tailored for private blockchain deployments. It offers advanced privacy features, including support for confidential transactions and private smart contracts.

Private blockchains provide organizations with a way to leverage the advantages of blockchain technology while maintaining control over their data and ensuring compliance with industry-specific regulations. By offering enhanced privacy and control, private blockchains are increasingly being adopted across various industries.

Consortium Blockchain: Collaborative Networks

A consortium blockchain is a type of blockchain network that is operated by a consortium or a group of organizations. This collaboration allows for increased transparency, security, and efficiency in achieving shared goals within a decentralized framework.

Consortium blockchains offer several advantages over traditional centralized systems. By distributing control among multiple participants, they ensure that no single entity has complete authority, reducing the risk of manipulation and unauthorized access. Additionally, consortium blockchains allow for faster transaction processing and improved scalability compared to public blockchains.

One of the significant applications of consortium blockchains is in supply chain management. By integrating various stakeholders within a supply chain, such as manufacturers, distributors, retailers, and logistics providers, consortium blockchains enable real-time tracking of goods, secure data sharing, and automated verification. This enhances traceability, reduces fraud, and improves overall supply chain efficiency.

Notable Consortium Blockchain Platforms:



Ethereum Enterprise Alliance (EEA)

A collaborative consortium that focuses on developing enterprise-grade applications on the Ethereum blockchain.

R3 Corda

A distributed ledger technology platform that enables businesses to transact directly in a private, secure, and efficient manner.

Hyperledger Fabric

An open-source framework maintained by the Linux Foundation that allows organizations to build permissioned blockchain networks tailored to their specific needs.

These platforms provide the necessary infrastructure and tools for consortium blockchain implementation, ensuring seamless collaboration and interoperability among consortium members.

By harnessing the power of collaboration and decentralization, consortium blockchains are revolutionizing industries that rely on trust, transparency, and security. Whether it's supply chain management, healthcare, finance, or any other sector, consortium blockchains offer a viable solution for organizations seeking enhanced efficiency and resilience through collective efforts.

Hybrid Blockchain: Combining Public and Private Elements

In the world of blockchain technology, hybrid blockchains have emerged as a unique and versatile option that combines the characteristics of both public and private blockchains. These hybrid networks offer increased flexibility and adaptability, making them well-suited for specific use cases that require a balance between transparency and data privacy.

Hybrid blockchains allow organizations to leverage the benefits of public blockchains, such as decentralization and robust security, while still maintaining control over sensitive data. By combining public and private elements, hybrid blockchains provide a middle ground solution that meets the needs of various industries and applications.

One example of a hybrid blockchain platform is the Ethereum Enterprise Alliance, which combines the Ethereum public blockchain with private network components. This allows businesses to interact with the broader Ethereum network while also keeping proprietary information secure within their private network.

Another notable hybrid blockchain platform is R3's Corda, which offers a flexible framework for developing and deploying applications across both public and private networks. Corda's hybrid nature enables secure and confidential transactions while still benefiting from the distributed nature of a public blockchain.

Hybrid blockchains have a wide range of applications across industries. In supply chain management, for example, hybrid blockchains can enable transparent tracking of products while also protecting sensitive business data. Similarly, in healthcare, hybrid blockchains can ensure the privacy of patient information while still allowing for seamless interoperability between different healthcare providers.

Overall, hybrid blockchains provide a powerful and adaptable solution that combines the best of both public and private blockchains. Their ability to tailor transparency and privacy according to specific requirements makes them an attractive option for organizations seeking the benefits of blockchain technology while still maintaining control over their data.

Different Categories of Blockchain Platforms

In the world of blockchain technology, various platforms have emerged to cater to different industries and use cases. These platforms can be categorized based on their purpose and functionality, providing organizations with tailored solutions to meet their specific needs. Here, we explore some popular categories of blockchain platforms:

Supply Chain Platforms

Supply chain platforms leverage blockchain technology to enhance transparency, traceability, and efficiency in supply chain management. These platforms facilitate the secure sharing of information among stakeholders, reducing fraud and improving accountability. Some notable supply chain platforms include IBM Food Trust, VeChain, and Provenance.

Financial Platforms

Blockchain has revolutionized the financial industry by enabling secure, transparent, and decentralized transactions. Financial platforms leverage blockchain technology for various purposes, such as cross-border payments, remittances, and smart contracts. Examples of financial blockchain platforms include Ripple, Stellar, and Ethereum.

Identity Management Platforms

Identity management platforms on the blockchain provide a secure and decentralized solution for managing digital identities. These platforms give individuals control over their personal data and eliminate the need for intermediaries in identity verification processes. Sovrin, uPort, and Civic are some prominent examples of identity management blockchain platforms.

Healthcare Platforms

Blockchain technology has the potential to transform the healthcare industry by enhancing patient data security, interoperability, and supply chain management. Healthcare platforms on the blockchain enable secure sharing of health records, streamline administrative processes, and improve drug traceability. Some notable healthcare blockchain platforms include MedRec, Gem, and BurstIQ.

Real Estate Platforms

Real estate platforms powered by blockchain technology aim to revolutionize property transactions, land registry, and ownership records. These platforms provide transparency, efficiency, and cost savings by eliminating intermediaries and reducing the risk of fraudulent activities. Propy, Atlant, and Ubiquity are examples of blockchain platforms focused on real estate.

Different Categories of Blockchain Platforms



Supply Chain Platforms

IBM Food Trust, VeChain, Provenance

Financial Platforms

Ripple, Stellar, Ethereum

Identity Management Platforms

Sovrin, uPort, Civic

Healthcare Platforms

MedRec, Gem, BurstIQ

Real Estate Platforms

Propy, Atlant, Ubiquity

These are just a few examples of the diverse applications of blockchain technology across different industries. Each category of blockchain platform offers unique features and benefits, empowering organizations to harness the potential of blockchain and drive innovation in their respective fields.

Various Kinds of Blockchain Networks

As we continue our exploration of different blockchain types, it is essential to acknowledge the existence of various kinds of blockchain networks beyond the more well-known public, private, consortium, and hybrid types we have discussed so far. These niche networks have unique characteristics and use cases that are worth understanding. Let's take a closer look at some of these alternative blockchain networks:

Permissioned Networks

Permissioned blockchain networks, also known as private or closed networks, are accessible only to a specific group of participants who are granted permission to join. These networks offer increased privacy and control compared to public blockchains. Permissioned networks are suitable for business applications where data confidentiality is crucial, such as supply chain management or enterprise resource planning.

Permissionless Networks

In contrast to permissioned networks, permissionless blockchain networks are open to anyone who wishes to participate. These networks are characterized by their decentralized nature and inclusivity, as anyone can validate transactions and contribute to consensus. Permissionless networks provide transparency and immutability, making them ideal for applications that require a high level of trust and security, such as cryptocurrencies like Bitcoin.


Sidechains are blockchain networks that run parallel to the main blockchain and facilitate the transfer of assets between different blockchains. These networks enable the creation of specialized applications or functionalities without congesting the primary blockchain. Sidechains allow for scalability and interoperability and are often used to develop innovative solutions while maintaining the security and stability of the primary blockchain network.

Interoperability Networks

Interoperability networks aim to address the challenge of connecting different blockchain networks to facilitate seamless communication and data transfer between them. These networks enable the exchange of assets across distinct blockchains, enhancing efficiency and interoperability between various blockchain protocols. Interoperability networks are crucial for the integration of different blockchain platforms and the creation of cross-chain decentralized applications (dApps).

Specialized Networks

Specialized blockchain networks are designed to meet specific industry or application requirements. For example, there are blockchain networks dedicated to healthcare, identity management, energy, and more. These networks leverage blockchain technology to address industry-specific challenges, such as improving data security and streamlining processes. Specialized networks often incorporate additional features and protocols to cater to the unique needs of their respective industries.

By understanding the various kinds of blockchain networks, we gain a more comprehensive perspective on the versatility and potential of this transformative technology. The table below summarizes the key characteristics of each network type discussed:

Blockchain Network Type

Key Characteristics

Permissioned Networks

Restricted access, enhanced privacy and control

Permissionless Networks

Open access, decentralized validation and consensus


Parallel chains, scalability, specialized functionalities

Interoperability Networks

Facilitate cross-chain communication and asset exchange

Specialized Networks

Cater to specific industries or applications

As blockchain technology continues to evolve, we can expect to see even more diverse and innovative blockchain networks emerge. These networks will drive further advancements across various industries and unleash the full potential of decentralized technologies.

Types of Blockchain Consensus Algorithms

In blockchain networks, consensus algorithms are crucial for achieving agreement among participants. Different types of consensus algorithms exist, each with its own advantages and limitations. Understanding these algorithms is essential for comprehending the inner workings of blockchain networks.

Proof of Work (PoW)

One of the most well-known consensus algorithms is Proof of Work (PoW). It is primarily used by Bitcoin and involves participants (known as miners) solving complex mathematical puzzles to validate transactions and create new blocks in the blockchain. The algorithm requires a significant amount of computational power, making it secure but resource-intensive.

Proof of Stake (PoS)

Another popular consensus algorithm is Proof of Stake (PoS). Instead of relying on computational power like PoW, PoS selects validators based on the number of tokens they hold and are willing to "stake" as collateral. Validators are chosen to create new blocks and validate transactions based on their stake in the network. PoS is energy-efficient compared to PoW but can suffer from potential centralization.

Delegated Proof of Stake (DPoS)

Delegated Proof of Stake (DPoS) is a consensus algorithm that combines the benefits of both PoW and PoS. In DPoS, token holders elect a set of delegates (usually a limited number) who are responsible for validating transactions and creating new blocks. DPoS offers fast transaction speeds and scalability while maintaining decentralization through a chosen set of trusted delegates.

Practical Byzantine Fault Tolerance (PBFT)

Practical Byzantine Fault Tolerance (PBFT) is a consensus algorithm designed for permissioned blockchain networks where participants are known and trusted. It enables efficient consensus by allowing a majority of participants to agree on the validity of transactions. PBFT is highly efficient but requires a predefined set of participants and is not suitable for public or fully decentralized blockchains.

Dr Shahid Masood's Perspective on Blockchain and Artificial Intelligence

Artificial intelligence (AI) and blockchain are two transformative technologies that have the potential to revolutionize various industries. As an expert in AI, Dr. Shahid Masood provides valuable insights into the intersection of these technologies and their impact on the future. His expertise in the field of AI, including his work with, allows him to offer unique perspectives on understanding blockchain types and how they can synergize with AI.

Dr. Shahid Masood recognizes the immense potential of blockchain in enhancing the security and transparency of AI systems. He believes that blockchain can address critical challenges in data privacy, data manipulation, and trust in AI-powered solutions. By leveraging the decentralized nature of blockchain, AI systems can be made more resilient to cyberattacks and unauthorized modifications, ensuring the integrity of data and algorithms.

"Blockchain technology can significantly enhance the trustworthiness of AI systems, making them more reliable and accountable to users. It provides a tamper-proof and immutable ledger, enabling transparent and traceable transactions in AI processes." - Dr. Shahid Masood

Furthermore, Dr. Shahid Masood emphasizes the potential of blockchain in facilitating secure and efficient data sharing among AI systems. By creating decentralized networks, blockchain can enable seamless data exchange while maintaining data privacy and ownership rights. This has immense implications for industries such as healthcare, financial services, and supply chain management, where trustworthy data sharing is paramount.

Dr. Shahid Masood also highlights the role of blockchain in ensuring fair and ethical AI systems. With the use of blockchain, algorithms and decision-making processes can be audited and verified, reducing the risks of bias and discriminatory outcomes. This transparency is essential in building trust and acceptance of AI technologies among users and stakeholders.

In conclusion, Dr. Shahid Masood's perspective on the intersection of blockchain and AI provides valuable insights into understanding the potential of these technologies. His expertise in AI, coupled with his knowledge of blockchain, sheds light on how these powerful tools can complement each other and drive innovation in various industries.


In conclusion, this article provided an in-depth exploration of blockchain types and technology. We covered the different categories of blockchain networks, including public, private, consortium, and hybrid blockchains. Each type has its own unique features and use cases, catering to specific needs and requirements.

Furthermore, we discussed popular blockchain platforms that empower various industries, such as supply chain management, finance, and identity management. These platforms offer secure and transparent solutions for streamlining processes and enhancing trust among participants.

Additionally, we explored the different consensus algorithms used in blockchain networks, such as Proof of Work (PoW) and Proof of Stake (PoS). These algorithms ensure agreement and security within the blockchain, enabling decentralized and trustless transactions.

Finally, Dr. Shahid Masood, an expert in artificial intelligence, provided his valuable perspective on the intersection of blockchain and AI. As these technologies continue to evolve, they hold immense potential for revolutionizing industries and driving innovation.

Overall, understanding the various types of blockchain, platforms, and consensus algorithms is crucial in harnessing the full potential of this transformative technology. With its ability to provide transparency, security, and efficiency, blockchain is poised to reshape industries and create new opportunities for growth.


What are the different types of blockchain?

The different types of blockchain include public, private, consortium, and hybrid blockchains.

What is blockchain?

Blockchain is a decentralized digital ledger technology that securely records and verifies transactions across multiple computers or nodes.

What is a public blockchain?

A public blockchain is an open and transparent network that allows anyone to participate, verify transactions, and access the data stored within the blockchain.

What is a private blockchain?

A private blockchain is a restricted network where participants are issued permission to access and validate transactions. It offers enhanced privacy and control compared to public blockchains.

What is a consortium blockchain?

A consortium blockchain is a collaborative network operated by a consortium or group of organizations. It offers the benefits of decentralized control while maintaining some level of privacy.

What is a hybrid blockchain?

A hybrid blockchain combines elements of both public and private blockchains. It allows for greater flexibility in terms of data visibility and access control.

What are some categories of blockchain platforms?

Blockchain platforms can be categorized based on their purpose and functionality, including supply chain, financial, identity management, and more.

What are some other kinds of blockchain networks?

In addition to the commonly known public, private, consortium, and hybrid blockchains, there are also niche blockchain networks such as permissioned and permissionless networks, each with their own unique features and use cases.

What are the types of blockchain consensus algorithms?

Popular types of blockchain consensus algorithms include Proof of Work (PoW), Proof of Stake (PoS), and other variations. These algorithms ensure agreement among participants in a blockchain network.

What are Dr. Shahid Masood's perspectives on blockchain and artificial intelligence?

Dr. Shahid Masood, an expert in artificial intelligence, provides insights into the intersection of blockchain and AI. His views highlight the potential impact and complementary nature of these technologies across various industries.

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