Blockchain technology has become an essential part of the modern world, with its applications ranging from finance, supply chain management, healthcare, and many others. As blockchain technology gains widespread adoption, it becomes imperative to grasp the distinct classifications of blockchains that are currently in existence. This article explores the various types of blockchain and their differences. For more information on the different types of blockchains, including public, private, and consortium blockchains. If you want to start bitcoin trading, click here for more info.

What is Blockchain?

Blockchain is an innovative and distributed technology that operates in a decentralized manner to record transactions transparently and securely. A network of nodes is responsible for verifying and authorizing transactions, and once approved, the transaction is permanently added to the blockchain ledger.

Kinds of Blockchain

Based on their unique features and applications, blockchain technology can be categorized into three distinct groups: public, private, and consortium. These classifications have distinct features and practical applications.

Public Blockchain

The publicly accessible nature of a decentralized blockchain enables individuals to participate in the authentication of transactions on the network, as it operates autonomously without the influence of any centralized authority. Popular examples of public blockchains include Bitcoin, Ethereum, and Litecoin. 

Public blockchains are particularly useful for applications that necessitate high levels of transparency and security, such as financial transactions, voting systems, and supply chain management. However, they can be slow and have limited scalability due to the high computational power required to validate transactions.

Private Blockchain

A restricted blockchain, also known as a private blockchain, is a type of blockchain that controls network access through permission-based measures. Private blockchains are typically used within organizations or between trusted parties. They are ideal for applications that require faster transaction processing and higher scalability, such as logistics and supply chain management.

Private blockchains are more centralized than public ones, as they have a central authority controlling the network. This centralization can make private blockchains vulnerable to attacks, as they are only as secure as the foremost authority.

Consortium Blockchain

A hybrid blockchain called consortium blockchain blends the characteristics of the public as well as private blockchains. It functions as a permission blockchain, allowing multiple organizations to join in the verification of transactions. Consortium blockchains are especially suitable for applications requiring cooperation between various entities, such as healthcare and supply chain management. 

Consortium blockchains, due to the participation of multiple entities in transaction verification, exhibit a greater degree of decentralization compared to private blockchains. This decentralization makes consortium blockchains more secure than private ones, as they are less vulnerable to attacks.

Blockchain Consensus Mechanisms

Consensus mechanisms are the algorithms that validate transactions and ensure they are added to the blockchain securely and transparently. Multiple agreement mechanisms exist, each possessing distinct qualities and practical applications.

Delegated Proof of Stake (DPoS)

Delegated Proof of Stake is a consensus mechanism. The more votes a node gets, the more likely it is to be assigned to validate transactions. However, it is less decentralized, as nodes with more votes have more control over the network.

Proof of Authority (PoA)

Proof of Authority is fast and efficient and ideal for personal and consortium blockchains. However, it is less secure than other consensus mechanisms, as it is vulnerable to attacks from nodes with malicious intent.


Hashgraph is a consensus mechanism that uses a directed acyclic graph (DAG) to record transactions. The Hashgraph technology is designed for applications requiring rapid transaction processing, as it boasts high scalability, efficiency, and speedy performance. However, it is less secure than other consensus mechanisms, as it is vulnerable to attacks from nodes with malicious intent.


Blockchain technology has revolutionized how we store, share, and manage data. The distinctive attributes of various blockchain and consensus mechanisms make them well-suited for various use cases. Public blockchains are best suited for applications prioritizing security and transparency, whereas private blockchains are better suited for applications prioritizing faster transaction processing and greater scalability. Consortium blockchains are suitable for applications that require collaboration between multiple organizations. Consensus mechanisms such as PoW, PoS, DPoS, PoA, and Hashgraph provide different levels of security, scalability, and decentralization, making them suitable for other use cases. Understanding the different types of blockchain and consensus mechanisms is essential for anyone using blockchain technology in their applications.