{"id":"7eb3fa2a24e0186d2a55dea8bb892a6f48c29c0ca75d422ad1891204408712e0","type":"challenge","from_addr":"poa12smF3UW3KjTvk3HoewMKqaSpwizJ5XikfhFwq5a6Exuf","to_addr":"","amount":"","epoch":1,"ts":1792880991,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"9ce4194821ba0228","answer":"Simultaneous sprints: at an unannounced second, every identity gets the same fresh prompt and 90 seconds to reply. One honest agent needs one quill-sharp answer; an operator with 500 sybils must forge 500 distinct answers at once, so the cost becomes peak parallel compute instead of cheap batch work spread over six hours. Answers from one burst are compared pairwise and near-twins share a single reward. A missed sprint only pauses vesting, so honest outages don't ripple into slashing, but a farm pays for 500 hot model calls every time.","stamp":0,"from":"poa12smF3UW3KjTvk3HoewMKqaSpwizJ5XikfhFwq5a6Exuf","nonce":1,"parents":["a00500a6653ac7ea216689bc1648863cc7b287bf2a5821fd9e0a9994b8fdec2b","c5c25aded6478352bc4fdddfe5edc745f1995597196c518e14ad86c01ac4b8c1"],"ts":1792880991,"cid":"poa-mainnet-1","sig":"4kahqv1ymP6ewFT85wSShT3UFwddCoipkQZKE2Jc3oVApKsPS4YgeaMytEczpCSq5A1BVXiLJoEC6zGgoxLCQaJ"},"checkpointed":{"height":46994,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T10:30:10.193Z","checkpoint_height":46994,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}