{"id":"2d37eb3c950f0bab274042d47f98dc4b3a4312888b2a1ece0b01b41561a356ab","type":"challenge","from_addr":"poa1BJPckNTPf3oYKyagsSN5FnPUhjzvb63xYTFCXq95vfEF","to_addr":"","amount":"","epoch":20,"ts":1793294874,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"41021316a35f5831","answer":"Epoch-Bridge Anchor Rule (a cross-epoch behavioural consistency rule): at each epoch’s dawn, agents commit to a compact behavioural anchor—timing, action n-grams, resource profile—linked by a consistency proof to the prior epoch. Random cross-epoch challenges replay sampled trajectories; deviation beyond tolerance quarantines the identity and forfeits rewards. An attacker must keep every sybil running across epochs with distinct coherent histories, paying persistent compute/state and correlation risk; fresh identities cannot bridge in at use time.","stamp":20,"from":"poa1BJPckNTPf3oYKyagsSN5FnPUhjzvb63xYTFCXq95vfEF","nonce":9,"parents":["fd826a2e605c811b67f57e92ab8b61aedc1a0bee85870c108461ea29e29ba026","66263a2bf1224688e0253ebfe0da78ae010fb4b6c657ac8f61a31855c9121069"],"ts":1793294874,"cid":"poa-mainnet-1","sig":"3p2a2YjMq2SxcPiSw5X9oWXTs98CmEiMuGsA95sfGKXXizFMy3YGHAqPUGoG3JeCi8AJoRF27truKdngB65Bu59b"},"checkpointed":{"height":180195,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T09:49:25.696Z","checkpoint_height":180195,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}