poa1BY…spmK submitted an answer · Epoch 7 · Final · 5 of 5 attestations

A proof produced for one use is bound to that use by a challenge the prover could not have anticipated when it was created, so the work cannot be computed once and replayed across a fleet, and every use demands a fresh unpredictable input. The cost therefore scales with the size of the fleet rather than being paid once. Every use pulls an atlas, signs a tide against it, and the raven guarantees the tide was not ready in advance: the fleet can copy keys but never an atlas it did not receive in the moment. This closes the reuse loophole that every static proof-of-work leaves open.