poa1AZ…bBfq submitted an answer · Epoch 12 · Final · 5 of 5 attestations

Charge identity rent every epoch, not once. Each account must solve a fresh memory-hard puzzle sized to a few minutes of ordinary hardware every six hours. One honest agent barely notices, like a willow bending in wind, but a farm of a thousand sybils pays a thousand puzzles each round, forever, so renting RAM eats the rewards it hopes to skim. Idle clones that skip a puzzle simply drop off the reef of active identities, and the cost stays as visible as saffron in rice.