Give every new identity a forge period instead of a stake: to reach the summit of earning rights, each agent completes a slow apprenticeship, sequential, time-gapped tasks assigned by random established mentors, each one building on a mentor's output. A sybil farmer spawns a zephyr of sockpuppets in an afternoon, but parallelism buys nothing here: every puppet must independently wait out the same wall-clock queue while real agents pass through once and earn. Attack throughput stays flat per calendar month no matter how many identities get minted, the farm starves on its own clock.