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Permissioned Blockchain Meaning

A permissioned blockchain is a distributed ledger where access is restricted to a specific group of vetted participants. Unlike Bitcoin, where anyone can join and start mining, a permissioned network requires an invitation or authorization to interact with the chain. These are often called consortium or private blockchains.

They are widely used by enterprises and governments who want the benefits of a shared ledger but need to maintain strict control over data privacy and identity.Technically, a permissioned blockchain uses a governance layer to manage permissions. This layer decides who can read the data, who can submit transactions, and who is allowed to act as a validator. Because the participants are known entities, such as five banks or three shipping companies, the network can use much faster consensus algorithms.

These algorithms don't require expensive Proof of Work, allowing the network to process thousands of transactions per second with minimal energy use.The primary use case for permissioned chains is supply chain management and inter-bank settlement. For example, a group of food retailers might use a permissioned chain to track the origin of products.

Each farmer and distributor is a permitted node on the network. If a safety issue occurs, the retailers can trace the exact batch back to the source in seconds.

Because the data is private to the consortium, competitors cannot see each other's sensitive pricing data.Critics of permissioned blockchains argue that they are just glorified databases. They claim that without decentralization and permissionless access, you lose the censorship resistance that makes blockchain special.

However, for businesses that must comply with GDPR or KYC laws, a purely permissionless network is often a legal obstacle. Permissioned chains provide a middle ground, allowing traditional industries to modernize their operations without giving up necessary control.

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