Decentralized means not controlled by any single entity or institution. Blockchain is an example of something that is decentralized, all full nodes in the network own a copy of the blockchain. This allows for a trustless environment, as no central party can manipulate the data. Decentralization also allows for more open and transparent systems, as all data is available to all participants.An example of a decentralized system is the Bitcoin network. Bitcoin is a peer-to-peer electronic cash system, where all full nodes in the network own a copy of the blockchain. This allows for a trustless environment, as no central party can manipulate the data. Decentralization also allows for more open and transparent systems, as all data is available to all participants.