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  1. Home
  2. /Glossary
  3. /Permissionless
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blockchain

Permissionless

A system that anyone can use or participate in without needing approval from a central authority.

Definition

A system that anyone can use or participate in without needing approval from a central authority. Public blockchains are permissionless, meaning anyone can run a node, send transactions, or build applications. It's a core principle that separates crypto from traditional finance where gatekeepers decide who gets access.

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Related Terms

Decentralized

Not controlled by any single entity, authority, or server.

Trustless

Systems that work without requiring trust in any single party.

Censorship Resistance

The ability of a blockchain to process transactions without any single party being able to block or reverse them.

ABI

Application Binary Interface.

Account Abstraction

A way to make crypto wallets behave more like normal apps by turning every account into a smart contract.

ERC-4337

The Ethereum standard for account abstraction without changing the core protocol.

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