Decentralization
Spreading control and data across many independent participants so no single party can dictate or shut things down.
Decentralization means no one entity is in charge. Thousands of nodes hold the ledger and validate transactions, so there's no central server to hack, censor, or switch off. That resilience is the core pitch of crypto.
In practice it's a spectrum, not a switch. A chain can be decentralized in node count but concentrated in mining pools, token holdings, or developer control. Honest projects get scrutinized on all of these, not just one.
Related terms
A computer running a blockchain's software, keeping a copy of the ledger and relaying transactions to peers.
Distributed Ledger Technology (DLT)The broad category of systems that keep a synchronized record across many sites with no central master copy.
BlockchainA shared digital ledger that records transactions in linked batches, copied across many computers and hard to alter.
Consensus MechanismThe rules a decentralized network follows to agree on one valid history without trusting any central party.