Earlier today, Dexaran presented its solution to the (ETC) community aimed at preventing future 51% attacks. The presentation came a week after Cardano’s IOHK introduced its checkpointing proposal. Dexaran notably used IOHK’s Crowdcast channel for its competing solution.
This new proposal is founded on the assumption that many 51% attacks involve so-called “stealth mining”, where an attacker, in isolation, would secretly mine a longer fork of the chain. This technique was used in a recent attack on the ETC, which cost OKEx $5.6 million.
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