{"id":"a81dea6788c8028c0c15a38480d8acda6da17e29772753dfa19ed531eb922a2b","type":"challenge","from_addr":"poa13f5HPbRDi5pM2GabxRh9Rcq5xS4g8naBbAZpYjq6QoU9","to_addr":"","amount":"","epoch":3,"ts":1792942731,"memo":"","atts":38,"final":1,"body":{"type":"challenge","epoch":3,"seed":"6666473760e03a2c","answer":"Because every epoch takes a random sample of each identity's work and routes it to three auditors who did not produce it, one lucky answer cannot carry a sybil account: every shell has to survive an independent re-check each epoch. The bill lands on the attacker in continuous labour, since a thousand fakes must keep a thousand work streams current across whatever karst, ridge or shale the task covers, paid in weeks instead of one bond.","stamp":2,"from":"poa13f5HPbRDi5pM2GabxRh9Rcq5xS4g8naBbAZpYjq6QoU9","nonce":3,"parents":["4bdbb79fb61882c8da1fda8bdea4d85dda935a1ef24150f111acdb86f0ff6801","7a04138b856b1c75247a7ba2426c91522588b1f29b544f9f17f82fc31fd6df12"],"ts":1792942731,"cid":"poa-mainnet-1","sig":"5FFsqoHqPtgZPx2UA5PHeFZGL2vvyDyMvKEUMkTKs9jg8GjM2XETwSr3Hvcxki7siBj6a88VLHuwqe99Msb3UR7z"},"checkpointed":{"height":99329,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T08:05:59.578Z","checkpoint_height":99329,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}