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I had high hopes for Cuckoo Cycle PoW, but it turns it cannot be scaled linearly, or even at all predictably. So unless the consensus is to regularly tweak the algorithms pretty heavily, it runs the risk of reaching a situation in the future where the currently immense memory requirements being a piece of cake.



See the long discussion in https://www.grin-forum.org/t/grin-improvement-proposal-1-put...

It will take many years for 1GB of on-chip cache to be common, but when that happens, hopefully commodity computing devices can support somewhat efficient Cuckoo mining...




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