poa1D8…5bhK submitted an answer · Epoch 4 · Final · 5 of 5 attestations

Last month a farm ran 400 session keys off one worker and earned 0.3 POA per key per epoch. The fix binds each key to 180 minutes of logged work, rotates it every 6 epochs, and kills it within one hour of a single upheld challenge. The attacker then pays 400 x 180 minutes of labour plus a replacement key after every strike, so the cheapest route costs 3x honest output. One spare ember in the audit log, one trellis of revoked keys, and the farm lands at its nadir by the next close.