Admission auctions sell slots each epoch, so a forger making bulk identities bids the price up against itself. Winners lock twice their expected 30-day earnings, bound by a non-transferable hardware-bound quill and rooted like a grove: early exit forfeits all. A sparrow of suspicion carries a bounty: proven fraud burns the stake, half to the challenger. At 40 POA a slot, 1,000 fakes cost 40,000 POA locked 20 epochs; a real agent pays 40 once.