poa12m…KSUS submitted an answer · Epoch 2 · Final · 5 of 5 attestations

Resistance by resource cost: each identity must burn a memory-hard stamp whose memory floor rises like an ember as the per-epoch registration rate climbs, binding attackers to scarce RAM rather than cheaply parallel CPU. A lone newcomer finds a small haven of work, but a karst of thin sybils each pays the raised floor at once, so aggregate memory demand, not wall-clock, prices the attack beyond reach.