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What Is Permissioned Blockchain Vs Un-Permissioned Blockchain?


permissioned blockchain

Blockchain technology is versatile, with applications in fields like banking, finance, and computer science. This adaptability has led to the creation of different types of blockchains, some with participation restrictions and others without.

This article explores the differences in application and users for permissioned versus un-permissioned blockchains, detailing their differences and importance in various sectors.

Permissioned Blockchain

A permission ledger is indispensable in the realm of blockchain ledger security operations, restricted exclusively to authorized individuals. This distributed ledger can solely be accessed by a select few authorized by the administrator, endowed with distinct privileges enabling specific actions. Unauthorized access is rigorously controlled, ensuring stringent oversight over public entry.

Key Features

  • Transparency: Tailored to organizational objectives, clearly attributing changes to authorized users.
  • Enhanced Security: Provides heightened data security and control for private entities, managing access and modification permissions.
  • Accountability: Non-anonymity ensures meticulous logging of all user-initiated changes.
  • Decentralized Decision-Making: Enables private groups to authorize decisions despite lacking a central authority.

Prominently adopted by leading global enterprises, permissioned blockchains are ideal for business operations prioritizing data integrity. They find applications across sectors, including supply chain management, contract execution, and payment verification, ensuring robust security and privacy measures.

Un-Permissioned Blockchain

In stark contrast to a permissioned blockchain, an un-permissioned blockchain, also known as a public blockchain, operates on a completely decentralized model. Here, there are no restrictions on participation, and no administrator controls access or grants permissions to make changes. Anyone can join the consensus process and validate data, fostering a network of unknown participants.


  • Transparency: Transactions are completely transparent to all users due to the open network.
  • Open Source: The platform is open-source, allowing users to access and modify it as needed.
  • Anonymity: While not providing complete anonymity, participants have a degree of privacy when making changes.
  • Decentralized: Lacks central authority, enabling unrestricted participation.
  • Token Incentives: Utilizes tokens and digital assets as incentives, promoting efficiency and effectiveness in operations.

Un-permissioned blockchains are pivotal in fostering open, transparent ecosystems where decentralized consensus and participation are paramount. They facilitate many applications, including cryptocurrency transactions, decentralized finance (DeFi), and decentralized applications (dApps), leveraging token incentives to drive network activity and engagement.

Advantages and Limitations of Permissioned Blockchain


  • Incremental Decentralization allows multiple businesses to participate in a controlled manner, reducing the risks associated with highly centralized models.
  • Enhanced Privacy: Access permissions ensure that only authorized parties can view transaction details, enhancing confidentiality.
  • Customizability: Enables tailored configurations and integrations to suit specific business needs, fostering flexibility and innovation.
  • Improved Performance and Scalability: Fewer consensus and transaction verification nodes result in faster processing times and enhanced scalability.


  • Increased Risk of Corruption: With fewer participants, there is a higher risk of collusion or malicious behavior among those controlling the network.
  • Consensus Vulnerability: Owners and operators can change consensus rules, potentially compromising immutability and integrity.
  • Limited Transparency: The closed nature of permissioned blockchains restricts visibility to outside parties, potentially reducing trust and oversight.

Advantages and Limitations of Un-Permissioned Blockchain


  • Broader Decentralization: Un-permissioned blockchains allow more participants to join and contribute to the network without permission.
  • High Transparency: Transactions are visible to all participants, promoting trust and accountability across the decentralized network.
  • Resistance to Censorship: The decentralized nature and broad participation make it difficult for any single entity to censor transactions or control the network.
  • Strong Security: Distributed consensus mechanisms and the inability to manipulate most nodes ensure robust security against attacks.


  • Poor Energy Efficiency: The extensive computational resources required for network-wide transaction verification contribute to high energy consumption.
  • Lower Performance and Scalability: Processing transactions across a vast network can strain computing resources, leading to slower transaction speeds and limited scalability.
  • Less Privacy: While transactions are pseudonymous, they are transparent and accessible to all participants, which may compromise user privacy.

Where Can Permissioned and Un-Permissioned Blockchain Be Used?

Both permissioned and un-permissioned blockchains exhibit distinct architectural characteristics suited to different types of applications. Here’s how they can be effectively utilized:

Permissioned Blockchain

Permissioned blockchain restricts access to data, making it suitable for applications requiring privacy and restricted access. It is beneficial in:

  • Supply Chain Tracking: Ensuring transparency and accountability in logistics and distribution.
  • Claim Settlements: Facilitating efficient and secure processing of insurance claims.
  • Identity Verification: Providing a secure platform for verifying identities and credentials.

These applications rely on restricted access to maintain data integrity and privacy.

Un-Permissioned Blockchain

Un-permissioned blockchain is ideal for building robust financial platforms based on decentralized principles. It finds application in:

  • Digital Trading: Facilitating secure transactions without centralized oversight.
  • Donation and Crowdfunding: Enabling transparent and accountable fundraising efforts.
  • File Storage: This is a decentralized and secure medium for public data storage.

Since Un-Permissioned blockchain imposes no restrictions on access, it offers broad accessibility to users.


The choice between permissioned and un-permissioned blockchain hinges on specific business needs. Permissioned blockchain offers robust privacy and controlled access, suited for applications like supply chain tracking and identity verification. In contrast, un-permissioned blockchain excels in decentralized financial platforms and transparent data storage. Scalability, privacy requirements, and token utilization are pivotal in determining the optimal blockchain solution for enhancing operational efficiency and meeting organizational goals.