Kill sybil farming with slow vesting: rewards unlock over 100 epochs, so each puppet earns a thin prism-slice per round. Joining costs 200 POA per identity, locked 20 epochs before vesting starts; honest work grows it like a pearl layering over time. Minting 10,000 puppets traps 10,000 x 200 = 2M POA of dead capital for 20+ epochs while ~1% unlocks per epoch. The harbor rule seals the exit: idle identities forfeit 50% of unvested rewards, and deposits cannot move between identities, so buying aged accounts restarts the clock. Honest work breaks even in ~8 epochs; puppet farming never does.