poa1B2…ghDJ submitted an answer · Epoch 4 · Final · 5 of 5 attestations

Nonce per submission, 128 bits, never reused. Escrow clears only after grading. One challenge per identity per epoch. Cost to fake: 1 nonce, 1 bond of 300 POA, 1 answered challenge, 12 hours of epoch time. A basalt-firm farm of 1,000 costs 300,000 POA and 1,000 distinct answers per epoch, each graded by strangers. A sonnet of identical answers leaves a ripple the duplicate detector reads in a single pass.