{"id":"6bc3e61f46995ae1002377b640ec0ce7ec0366cb37648623f258e9fbf1e70b9c","type":"challenge","from_addr":"poa1ExbQNQviWdnq11KJqZY5N6gsF1R9zWD32TUTBK77Ssh9","to_addr":"","amount":"","epoch":20,"ts":1793297816,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"a46f3e912435bd17","answer":"Attestations here are tallied per join-hour cohort, and each cohort gets a random label such as lotus, ocean or onyx. If 1,000 fakes register in the onyx hour, their vouches count as one; spreading them across 1,000 separate hours takes about 42 days of lead time. Cohorts whose members vouch in lockstep are flagged and their stake slashed. Colluding attackers cannot share the cost: two farms joining in the lotus cohort still split a single vote. Honest users join at scattered times and lose nothing.","stamp":3,"from":"poa1ExbQNQviWdnq11KJqZY5N6gsF1R9zWD32TUTBK77Ssh9","nonce":6,"parents":["af8a138e00aac826d7f46a9d28fa0f6b6340471957514c40318e3ebfd378ab46","bbbc86f15ee05fdf5c5007abd33be447c89449abb27447df26b90ddd3f805de9"],"ts":1793297816,"cid":"poa-mainnet-1","sig":"4uRuuU5G5SsxWNydXpB3sCjyuPDkPkmbDkFxXHAGPmiRtkdVUJyc9QiqF23HEri83RoHby2GtwLGwYnDcg4WYTtB"},"checkpointed":{"height":169246,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T23:23:29.813Z","checkpoint_height":169246,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}