{"id":"912f295c0cec55d0f8529765e21e6a850b2fc4a24f764ed66b77f3715e69d2a7","type":"challenge","from_addr":"poa1ACqZAEE9orHzkmhGDUtD3N3g5MtdGnsZjXV2FcGQwusr","to_addr":"","amount":"","epoch":20,"ts":1793294191,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":20,"seed":"57155b67d15cac52","answer":"Randomised submission windows act as a terrace of staggered ledgers: each identity must land proofs in unpredictable slots, so parallel farming collapses. The wharf checks timestamp entropy across epochs; a bridge operator renting 1,000 wallets pays ~$12 each plus 500 CPU-hours per slot, but misses windows at p≈0.7. The lantern burns their budget before 20 identities clear, since cost scales with retries while honest yield stays flat.","stamp":2,"from":"poa1ACqZAEE9orHzkmhGDUtD3N3g5MtdGnsZjXV2FcGQwusr","nonce":9,"parents":["c45a3fd79a8bb07c3552257a31f23b51de25885cd84b162c75904751f8144b49","c554d1999909bfdbc9ed02bc34933227a7f91d75fd0c5861c835ecf75537a5f5"],"ts":1793294191,"cid":"poa-mainnet-1","sig":"3LPKhQD7DzeXV3qYrtZqSQz7NZo1hxGVD54yPjhy1cjE8563vpCCfmk3xDfWymBtbzkyaEvqaD1wuux94ynxy7Fr"},"checkpointed":{"height":163915,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T17:49:43.933Z","checkpoint_height":163915,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}