The Evolution of Permissioned vs Permissionless Blockchains

It is evident that the blockchain paradigm has shifted the perspective of individuals regarding money, security, transparency and digital transactions. I initially learned of blockchain and thought "blockchain is just a cryptocurrency such as bitcoin. However, later on, I found that blockchain is far bigger than digital coins. In the past few years, blockchain technology has developed in two forms: permissionless blockchains and permissioned blockchains. While these two might appear identical due to the fact that they both utilize blockchain technology, they have different designs and objectives.

Permissionless blockchain is an open blockchain that allows everyone to join, participate and make transactions without having to be approved. This is a completely decentralized blockchain. No one is in charge of the system. Examples of permissionless blockchains include Bitcoin and Ethereum. The blockchains enable individuals around the globe to send and receive electronic assets freely. Internet connection is required and everyone can join the network. One of the best aspects of permissionless blockchains is their openness.

Permissionless blockchain is not something new, but it gained popularity in 2009 when Bitcoin was introduced by Satoshi Nakamoto. It was intended to establish a non-bankary, non-gubernatorial financial system. There were a lot of people losing faith in traditional financial institutions due to financial crises and economic ailments at the time. Bitcoin provided an alternative that allowed users to have control over their money, without any intermediaries. The new era of digital finance had begun.

As the time passed, permissionless blockchains progressed from mere financial trade to a lot more. Ethereum was the first to introduce smart contracts, or digital contracts, which execute automatically when specific conditions are fulfilled. This innovation paved the way for the decentralized finance, gaming, NFTs and numerous blockchain applications. I think this is a fascinating development to be interested in, as the technology can go from a simple idea to impacting many industries all over the world.

But there were numerous difficulties with the permissionless blockchains. The one major problem is scalability. As there is no restriction on who can use the network anything can take place, so at times transactions can be slow and costly during peak hours. Another concern is energy consumption, particularly with older systems that employ mining. Issues of security threats, illegal activities, and nonexistent regulation were also discussed. Questions began to be raised about whether a truly open system could satisfy business and legal needs by governments and companies.

Image Source

This resulted in permissioned blockchain development and growth. Permissioned blockchains are controlled blockchains that allow only approved participants to access the system, while permissionless blockchains are open blockchains. Users must be granted permission to create and participate in some activities. The blockchains are typically utilized by businesses, organizations, banks, and government entities. Permissioned blockchains are more about privacy, efficiency, and control rather than complete decentralization.

The rise of permissioned blockchains occurred because there was a need for many organisations to have some control over blockchain technology while benefiting from its advantages. Companies sought secure data sharing, speeded up transactions and transparency, but with the protection of sensitive information. Consequently, platforms such as Hyperledger Fabric and R3 Corda have been created to enable enterprise blockchain systems.

The industry specific roles of permissioned blockchains emerged, including in the healthcare sector, supply chain, banking, and insurance. In a healthcare setting, for instance, a permissioned blockchain could be employed to keep patient data secure and provide access to only authorized personnel. Companies can monitor the movement of goods from production to delivery in a transparent manner in the field of supply chain management. Permissioned blockchains are also employed by banks to enhance payments and lower fraud.

One major difference between permissioned and permissionless blockchains is governance. Permissionless systems typically have decisions made by the community. Numerous users help keep the network operating. Permissioned systems are those where a central entity, or group of trusted parties, makes decision-making decisions. This simplifies and speeds up the management of permissioned blockchain systems, but others have suggested that it diminishes the real decentralization envisioned by the blockchain.

There's another big distinction when it comes to transparency: Permissionless blockchains are typically open, where transactions on the blockchain are usually visible by anybody. This improves trust as records are not easy to conceal or tamper with. Permissioned blockchains, meanwhile, provide less visibility as only specific people have access to certain information. This is often the preferred option for businesses, as they have confidential information to handle.

Both types of blockchain have been development over the years. Permissionless blockchains are currently trying to address the problems of speed, energy consumption and transaction fees with innovations such as proof of stake systems and layer-two scaling solutions. Permissioned blockchains are also maturing with increased versatility and compatibility with other blockchain platforms. Many experts now think both systems can coexist as they are different systems of needs.

I think what we're seeing with permissioned and permissionless blockchains is that the technology is able to change its nature. Permissionless blockchains are about freedom, openness and decentralization; permissioned blockchains are about efficiency, privacy and business. Both systems are not flawless; however, they have played a significant role in the development of blockchain technology.

In conclusion, the evolution of permissioned and permissionless blockchains reflects the changing demands of society and technology. Permissionless blockchains were the first to bring a new decentralized digital system to the world where everyone was free to participate. Later on, permissioned blockchains came to serve the needs of those organizations that needed more control and security. The blockchain continues to evolve and impact numerous sectors of the economy today. In the future, both permissioned and permissionless blockchains will likely have a significant impact on the way digital transactions and information are managed.