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What does decentralization mean?
Decentralization means moving control of a system away from a single company or person, so that many independent participants run and check it. On Bitcoin, for example, no one person or group decides how the network changes.
What it means for you
A decentralized network has no company that can reverse a payment or recover lost keys for you. Decentralization also varies by layer: a coin can run on a decentralized blockchain while one company still controls its issuance or the app you use to reach it.
How it works
Decentralization is judged layer by layer. On Bitcoin, developers write the software but cannot force a protocol change, because every user chooses which software and version to run, and the system works only while users agree on the same rules. Block production is a separate layer: under proof of work it rests with whoever controls computing power, under proof of stake with validators weighted by staked coins. Above that sit parts one party can still control: a fiat-backed stablecoin needs an issuer, a third-party custodian holds the keys, and a wallet that relies on someone else's node depends on that provider.
Sources: ethereum.org: Glossary, bitcoin.org: Frequently Asked Questions, ethereum.org: Consensus mechanisms, ethereum.org: Stablecoins, ethereum.org: Nodes and clients · checked 4 October 2026
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