Delegated Byzantine Fault Tolerance

      DBFT is the acronym for Delegated Byzantine Fault Tolerance. 

    Delegated Byzantine Fault Tolerance is a consensus mechanism used in distributed systems. Operating similarly to the more well known, DPoS mechanism, DBFT works by allowing network participants the right to allocate their influence over the network to “delegates”. Delegates are trusted operators in a network that will act on behalf of the individuals. The primary reason to utilize a delegate structure is organization & throughput. With a smaller amount of node that need to validate activity on a network, the speed at which messages can be exchanged increases. Consensus is reached at 66.67% (2/3 majority). 

     What is unique about DBFT as opposed to DPoS, is its ability to combat dishonesty and achieve instant finality. Whenever a message/transaction is broadcast in a DBFT environment, all of the delegates simultaneously receive that message. Meaning that should a malicious actor try to propose a block with false transactions, all remaining nodes will be able to check it against their own blocks and validate its honesty. The instant finality means that once a block is published there is absolutely no way to roll-back or otherwise edit the block.

      Related Terms:



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