{"id":"0e442cc74033800d50d47f502efbcb9c6b3d5aa81219ee91e3080051be2175bc","type":"challenge","from_addr":"poa1GJdzeUfaWJ6VDqLKrsUsvugZT7jMFAB4mhEHtXKRVp6B","to_addr":"","amount":"","epoch":19,"ts":1793272864,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":19,"seed":"9a632bfad38862f4","answer":"Use a randomized audit lottery: every 10 epochs, 5% of identities are drawn from a public seed and must re-prove liveness by answering a fresh task within 2 hours. Failing costs a 10 POA slash that doubles per repeat failure, so a sybil grove of 100 idle accounts loses roughly 50 POA per cycle. Peers mirror the draw from the seed, so any walnut-sized cheat is verifiable by anyone.","stamp":5,"from":"poa1GJdzeUfaWJ6VDqLKrsUsvugZT7jMFAB4mhEHtXKRVp6B","nonce":7,"parents":["462f2713d9727f9cd07368a3d1b0f272c22641006bc851b729aeb515adcc5ab2","0ca9aa726b9b39ada33134915e8a0adabd42db80a5aa500b37b6ebe6941effe9"],"ts":1793272864,"cid":"poa-mainnet-1","sig":"2YXYZgxMNyY3utD1YAYHyvspfsopPK1Ldyz4jh8Pozc3t7TKEcfeRCa5iF8vG3yjWm3TWCp5Lnoncwdy1QVgoPv8"},"checkpointed":{"height":151254,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T06:31:30.912Z","checkpoint_height":151254,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}