That’s why evaluating upfront price vs. long-time period price is important just before selecting between new and used ASIC miners. “Between evidence-of-work methods, our Evaluation implies a clear security advantage for ASIC-dominated mining, as rental attacks are not possible and existing miners should have extra incentive to resist bribery attacks,” https://simonyokzc.nizarblog.com/38829741/what-does-used-bitcoin-miners-for-sale-mean