The concept of blockchain is becoming increasingly recognised as a potential remedy for financial inclusion challenges. As a result, both organisations and governments are embracing blockchain technology to ensure they are included in the expanding digital economy.
Nonetheless, it is essential to note that distributed ledger technology encompasses various networks that cater to the distinct needs of individuals and businesses, and it is crucial to understand that not all blockchains are identical in their capabilities and functionalities.
How to Classify Different Blockchain Networks?
Although blockchain may revolve around a singular concept, it is vital to acknowledge the significant diversity among different networks. A critical factor in distinguishing between these networks lies in their varying degrees of decentralisation. Their categorisation indicates the following blockchain types:
-
Public Blockchain
Public blockchains are decentralised networks accessible to anyone with an internet connection. These networks operate peer-to-peer, where transactions are verified through a consensus algorithm. The most commonly used consensus methods in public blockchains are Proof of Work (PoW) and Proof of Stake (PoS).
Within a public blockchain network, information is spread across multiple nodes. The consensus algorithm assures that these nodes agree on the current state of the ledger. This algorithm is crucial for maintaining the stability and integrity of the digital currency blockchain.
-
Private Blockchain
Private blockchains, or managed or permissioned blockchains, function within a confined network and are operated by a single entity or a consortium of entities. These blockchains are commonly adopted by organisations that place a high value on maintaining privacy and exerting control over their data.
Within a private blockchain, access permissions are restricted to a specific group of participants. The entity in control can dictate which individuals can access, contribute, or change the data stored on the blockchain. Due to their limited scope, private blockchains often exhibit superior speed and efficiency compared to their public counterparts.
-
Consortium Blockchain
A consortium blockchain is a decentralised network where multiple organisations collaborate. Unlike a private distributed ledger controlled by a single entity, consortium blockchains distribute authority among the participating parties. Each member organisation is granted permission to access and engage with the blockchain in this network. However, confidential information stored within the verified blocks remains concealed from the public eye.
Consortium blockchains facilitate collaboration among multiple organisations in a decentralised network. Unlike privately distributed ledgers, which are controlled by a single entity, consortium blockchains distribute authority among the participating parties. Each member organisation is granted permission to access and actively participate in the blockchain in this type of network. Nevertheless, sensitive information within the verified blocks remains undisclosed to the public.
-
Hybrid Blockchain
Hybrid networks offer a unique blend of public and private ledger functionalities. By integrating the best of both worlds, these blockchains enable organisations to regulate data access while ensuring transparency in transaction verification.
Within a hybrid blockchain, organisations can establish a private, permission-based system alongside a public permissionless system. This strategic approach facilitates transaction verification through smart contracts and safeguards sensitive information by maintaining confidentiality.
Types of Consensus Mechanisms
Furthermore, blockchain networks may also be classified by consensus methods, which are essential in verifying transactions and protecting a blockchain from malicious actors.
Main consensus algorithms can be categorised into the following types:
Proof of Work (PoW)
The concept of proof-of-work refers to a mechanism used in varied blockchain systems to authorise and safeguard transactions. It involves miners solving complex mathematical puzzles in order to add new blocks to the blockchain.
Proof of Stake (PoS)
The proof-of-stake mechanism relies on participants holding a certain amount of crypto to be chosen to authorise transactions and create new blocks. This method aims to reduce the energy consumption associated with mining in proof-of-work systems, as it does not require extensive computational power.
Proof of History
The Solana blockchain has introduced a novel algorithm called proof-of-history. This algorithm enables nodes to generate cryptographic proofs that signify the time intervals between events.
It plays a crucial role in ordering and validating operations on the network blockchain, achieving remarkable transaction processing speed while maintaining low hardware requirements.
Issues of Blockchain
Even with the vast array of blockchain choices available, all systems have some challenges that may prevent them from being widely used and functioning as intended. Several of the principal obstacles consist of the following:
Scalability Issues
The scalability issue has been a significant challenge in technology, particularly in public distributed ledgers. As the volume of transactions increases within the system, the network experiences a decline in speed and efficiency, posing a considerable obstacle.
Interoperability
Developers have also directed their attention towards achieving interoperability among various blockchains. Given the diverse range of blockchains available, each with its distinct attributes and protocols, establishing effective communication and data-sharing mechanisms between them has proven to be complex.
Privacy
Furthermore, privacy remains a persistent concern for specific applications. Researchers are actively exploring privacy-enhancing technologies like zero-knowledge proofs (ZKPs) and secure multi-party computation to address this. These innovative approaches aim to provide privacy features while upholding the reliability and integrity of systems, striking a delicate balance between the two.
The Bottom Line
Today, there are many blockchain networks of distinctive configurations and purposes, each of which has its own virtues, shortcomings, and features that allow them to be used in certain situations where they will reach their full potential.
You must be logged in to post a comment.