Crypto glossary
Decentralization
Decentralization is the spreading of control over a network across many independent participants, so that no single company or person can run or censor it.
A decentralized system has no central operator whose decision or failure determines the outcome. In a blockchain, many independently run nodes keep copies of the ledger, block producers are spread across different owners and locations, and changes to the rules need broad agreement. The aim is resistance to censorship, shutdowns and unilateral rule changes.
It is measured along several dimensions: how concentrated block production is among miners or validators, how easy it is to run a full node, who controls upgrades, and how tokens and governance votes are distributed. A network can be decentralized in one dimension and centralized in another, for example by relying on a few mining pools, a single software client or an admin key.
More decentralization usually costs speed and convenience, a tension known as the blockchain trilemma. Projects also use the word as marketing while keeping key controls in a few hands. Checking who can upgrade contracts, freeze funds or halt the chain gives a clearer picture than a project's own claims.
Example
If three mining pools together produce more than half of a proof-of-work chain's blocks, the network has many miners on paper but a concentrated point of control in practice.
Related terms
Latest articles on Decentralization
- Andre Cronje Claims DeFi Has Drifted Far From Real Decentralization
- Cardano Advances Decentralization With New Infrastructure Governance Model
- The Ethereum Paradox: Can the Network Survive Its Own Ideal of Decentralization?
- Web3 Foundation Enters a New Era Focused on Its Core Decentralization Mission
- The Ethereum Foundation Draws a Line Between Real DeFi and Chaos Dressed Up as Decentralization
