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Redirected from: 51% agreement

Definition: 51% consensus


An agreement between the majority of all currently active blockchain nodes that this new block of transactions has been validated and should be added to the blockchain. The 51% is somewhat misleading, because the percentage is actually 50% plus one more. Therefore, if there were 10,000 nodes participating, 5,001 becomes the majority, not 5,100 nodes. See 51% attack, consensus mechanism and Bitcoin mining.