“By definition, a decentralized cryptocurrency must be susceptible to 51% attacks whether by hashrate, stake, and/or other permissionlessly-acquirable resources. If a crypto can’t be 51% attacked, it is permissioned and centralized.”
Lee’s statement was in response to another tweet stating that “if it can’t be 51% attacked, it isn’t decentralized,” from Twitter user CryptoTesla. The tweet was made in response to Coinbase‘s announcement revealing it had detected “chain reorganizations” and double spends on ETC’s blockchain yesterday, Jan. 7.
Coinbase announced they had suspend deposits and withdrawals of ETC on Jan. 5, with the freeze evidently still in place by press time.
On Jan. 7, ETC developers denied the reports that the hashpower consolidation was in fact a 51 percent attack, stating that it was “most likely selfish mining” and that double spends did not take place.
Later, the ETC team stated in a tweet that the increased hashrate might be attributed to the testing of new 1,400/Mh Ethash machines by application-specific integrated circuit (ASIC) manufacturer Linzhi. However, Linzhi Shenzhen’s director of operations denied these claims in a tweet that has since been deleted.
By press time, the ETC team has refrained from applying the term “51% attack” to the incident. One of their most recent tweets on the issue from today repeats a request to all crypto exchanges and mining pools to significantly increase confirmation time on all withdrawals and deposits.
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