Definition
Censorship resistance describes how difficult it is for an actor to prevent eligible users or transactions from participating in a system. In a blockchain, the question may concern submitting transactions, obtaining block inclusion or accessing records. These are related but different forms of access.
How It Can Be Supported
Open participation, multiple communication paths and distributed block production can reduce dependence on a single gatekeeper. If one service refuses a valid transaction, another route may allow it to reach the network. However, a transaction must still satisfy protocol rules and fee requirements; rejecting an invalid transaction is not the same as censorship.
Key Considerations
Resistance is not an absolute promise of immediate inclusion or unrestricted access everywhere. Concentrated validators, mining pools, sequencers, hosting providers and application interfaces can affect practical access. A token contract may also include issuer restrictions even on an open blockchain. Evaluate the specific layer and the actor with exclusion power. A censorship-resistant base network does not automatically make every wallet, exchange or application using it equally resistant.