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Delegated Byzantine Fault Tolerant (dBFT) is a consensus mechanism that was made popular by a cryptocurrency called NEO. dBFT essentially works in a similar fashion to a country’s Governance system, having its own citizens, delegates, and speakers to ensure that the country (Node Network) is functional. The method is closer to Proof of Stake (PoS) rather than Proof of Work (PoW), by utilizing a voting system to choose delegates and speaker.

Source: Delegated Byzantine Fault Tolerant (dBFT)