What Are the Different Types of Blockchains?

One month since Bitcoin celebrated its 16th anniversary, blockchain technology has rapidly progressed from an experimental and never-before-heard-of idea to a game-changing paradigm that is reshaping entire industries. As we see wider implementation of blockchain across sectors and countries, it’s necessary to understand the different types of blockchains, how they operate, and what they can do for the public and private space. 

To start, blockchain is a decentralized digital database (or ledger) that makes transactions transparent and immutable between any user anywhere in the world. But not all blockchain types work the same way; some have been created to meet particular needs and applications. Understanding the differences between the different types of blockchain networks is crucial since each one has special features and attributes. 

How Many Blockchains Are There?

There are 4 types of blockchain networks: public, private, consortium, and hybrid. They all have distinct functionality that balances aspects like control, privacy, and decentralization. Understanding these differences is essential when choosing the best type of blockchain for a given application, be it trading, gaming, healthcare, or banking.

Public Blockchains

Anybody can join, view, and contribute to public blockchains, which function as completely decentralized networks. To verify transactions and guarantee network security, these types of blockchains rely on consensus techniques, mainly Proof of Work (PoW) or Proof of Stake (PoS). The most well-known public blockchains are Ethereum and Bitcoin, which both place a high value on decentralization and transparency.

The transparency of public blockchains is one of their most notable features. Public blockchains are unrestricted by any central authority, providing for full openness and access to all transaction records because anybody can join. Because of this, public blockchains are perfect for applications that require visibility and trust. For example, Bitcoin functions as an open ledger of transactions that everyone with an internet connection can view and validate. One of the factors contributing to cryptocurrencies' recent rise in popularity is their high degree of openness.

Another notable feature of public blockchains is their security. Because the network is decentralized, no one party has complete control, making it extremely difficult for anybody to change the history of the blockchain. Public blockchains' openness, however, can also cause scalability problems because it requires consensus from many participants, which can make transaction verification time-consuming and expensive.

Key Elements of Open Blockchains

• Decentralization
• Openness
• Using PoW or PoS consensus techniques for security

Private Blockchains

Private blockchains are permissioned networks that are solely available to a certain user group, in contrast to public blockchains. Businesses that need more control over their networks and safe, private data management frequently employ these kinds of blockchains. Popular private blockchains like Hyperledger and Corda are frequently used in sectors like healthcare and finance where data privacy and sensitivity are critical.

Only authorized users are permitted to view and write data on private blockchains, providing restricted access. Because fewer participants result in faster consensus and transaction times, this regulated access improves data privacy and transaction speed. Another important aspect of private blockchains is centralized management, which gives businesses the ability to control who can participate, what they can see, and what they can do.

The efficiency and adaptability of private blockchains are also benefits. Organizations can customize their blockchain to meet certain operational requirements with centralized control, providing a balance between speed and data integrity. However, because the security and dependability of the network rely on a central authority, this structure comes at the expense of decentralization.

Key Elements of Private Blockchains

• Permitted, restricted access
• High levels of privacy and control
• Increased transaction speeds

Consortium Blockchains

A consortium or set of organizations, as opposed to a single central authority, governs consortium blockchains, also known as federated blockchains, which are partially decentralized networks. This kind of blockchain is frequently utilized in sectors like banking and energy where cooperation between a few chosen firms is required. Prominent instances of operational consortium blockchains are R3 and the Energy Web Foundation.

A consortium blockchain strikes a balance between control and transparency by having participating businesses collaborate to maintain and validate transactions. Because access to this kind of blockchain is restricted to pre-approved individuals, it is regarded as semi-private. Since several organizations participate in governance, it yet maintains a certain amount of decentralization and lowers the risks of a single point of failure.

Consortium blockchains have the distinct feature of shared control, which allows a chosen group of members to agree on operational choices. Strong security features and consensus procedures catered to the requirements of each participating member are frequently included in consortium blockchains. These blockchains' semi-private characteristics make them a desirable option for applications requiring both selective transparency and privacy.

Key Elements of Consortium Blockchains

• Multiple entities sharing control
• Enhanced security using established consensus procedures
• Partially decentralized and semi-private

Hybrid Blockchains

By combining aspects of private and public blockchains, hybrid blockchains provide a solution that combines the best features of each. Hybrid blockchains are a great option for businesses that want both confidentiality and transparency since they combine elements of private security and public accessibility. One well-known example of a hybrid blockchain is Dragonchain, which enables businesses to share some data with the public while maintaining the privacy of sensitive information.

Organizations can choose which data is public and which is private with hybrid blockchains' restricted access and adjustable privacy features. On a hybrid blockchain, for example, a healthcare provider may share aggregated health statistics publicly while maintaining patient privacy. Because of their adaptability, hybrid blockchains can serve sectors like healthcare and finance, where privacy and transparency are crucial, and have stringent data compliance regulations.

Hybrid blockchains also provide flexible governance, enabling businesses to modify privacy settings as necessary. Hybrid networks facilitate a wide range of use cases by fusing elements of public and private blockchains, guaranteeing security and transparency where necessary, and easing transfers between digital wallets.

Key Elements of Hybrid Blockchains

• Managed access with adaptable privacy
• Components of both public and private blockchains combined
• Adaptable data management and governance

What to Know When Selecting a Blockchain

A number of criteria, such as scalability, security, privacy, transaction speed, and cost, influence the choice of blockchain type. While public blockchains provide unparalleled security and transparency, their speed and privacy may be limited. Despite sacrificing some decentralization, private blockchains are perfect for businesses that need a high degree of control and anonymity. Consortium blockchains are appropriate for cooperative initiatives because they achieve a compromise between transparency and shared control. Finally, hybrid blockchains offer an adaptable combination of private and public characteristics, making them perfect for applications that need to be both open and secret. To enable seamless access and interaction with blockchain technology, businesses are increasingly turning to iOS app development and Android app development. By integrating blockchain capabilities into mobile apps, organizations can provide users with secure, efficient, and scalable solutions directly from their smartphones, ensuring smooth transactions and enhanced privacy for all users.

Whether for a personal or professional project, knowing the distinctions between public, private, consortium, and hybrid blockchains will help you make an informed choice. Before choosing, carefully weigh your objectives, operational requirements, and financial constraints as each type has advantages and disadvantages. You may leverage the technology's strength and versatility for applications in a variety of industries by choosing the best kind of blockchain. Additionally, many businesses are now opting for custom blockchain development to tailor the blockchain to their specific needs, ensuring that their operations run smoothly and securely.