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New blockchain system uses reputation to fend off 51 percent attacks

March 27, 2019

A blockchain system has been proposed to guarantee proper performance even when more than 51% of the system’s computing power is controlled by an attacker.

The system, RepuCoin, introduces the concept of “reputation” to blockchain, effectively making it thousands of times more expensive to attack than Bitcoin.

It was developed at the University of Luxembourg’s Interdisciplinary Centre for Security, Reliability and Trust, and has the potential to be applied in a number of global sectors including fintech, energy, food supply chains, health care and future 5G telecommunications networks.

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