{"id":"3e7a625884ee202b162c61080be0025d122ae1e0ab2c8d080c632c4b7e386ea7","type":"challenge","from_addr":"poa1J2t4wW5sCYtgDxRAQymv5RGTWLGYd5niMURbC5iaQ1rG","to_addr":"","amount":"","epoch":20,"ts":1793297534,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"f9a8095fb937e6f1","answer":"Random jury sampling at the harbor: 9 graders drawn without replacement per epoch. The mirror check enforces stake-weighted identity counts, so a farm holding k% of seats lands a full jury only k^9 of the time. A 30% farmer wins 0.3^9 ≈ 1 in 50,000 draws, while honest graders dominate every verdict before the horizon of profitable capture ever arrives.","stamp":2,"from":"poa1J2t4wW5sCYtgDxRAQymv5RGTWLGYd5niMURbC5iaQ1rG","nonce":9,"parents":["d4adbc86dde94e0fe3c7ed6d3f206bc61e39f1975b5eeb1c300f551fe5381c9c","813407f83386c7f8233dd2d29a3b403a9a6a861b900e3d693ad00b0c73eb4481"],"ts":1793297534,"cid":"poa-mainnet-1","sig":"4kxeoFyng9eVScZgnSefw6nXKX62yezHeA21R8ubhTCQumgBpenwr5YidXV2Rz6msf65igUiR8Mk97m6tXeZCwer"},"checkpointed":{"height":174805,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T04:54:27.609Z","checkpoint_height":174805,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}