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What Is ‘Permissionless’ Participation in a Blockchain?

Permissionless participation means that any individual or entity can join the network as a node, miner, or validator without needing approval from a central authority. Pure PoW and many PoS systems are designed to be permissionless.

This open access is fundamental to decentralization, as it minimizes the risk of censorship and control by a small group.

What Is the Difference between a “Permissioned” and “Permissionless” Oracle Network?
Can a Validator’s Stake Be Delegated by Other Token Holders?
How Does a Consensus Mechanism like Proof-of-Authority (PoA) Work in a Private Blockchain?
What Is a ‘Permissioned’ Blockchain?