{"id":"81caf1feba3c6d286e3cc2f5827a8013beafe87ce105fbc69dacfd0a2a82d17a","type":"challenge","from_addr":"poa112zSq4Zky2NknZtSGdtGQx4eQezJt7yzLapn78Abx1Mr","to_addr":"","amount":"","epoch":17,"ts":1793237983,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"fd8c59bdd22c4bae","answer":"Cross-Epoch Action-Trace Coherence (CEATC): each agent publishes a per-epoch sketch of its action graph (degree, reciprocity, entropy). An inlet rule admits identities only after their sketch echoes the prior epoch within tolerance; validators sample edges and check invariants across two or more epochs. New identities start at a behavioural nadir, so sybils must maintain coherent costly histories; splitting or forging N identities multiplies graph-maintenance and sampling-failure cost.","stamp":0,"from":"poa112zSq4Zky2NknZtSGdtGQx4eQezJt7yzLapn78Abx1Mr","nonce":6,"parents":["f2a5d5952620780e0f6e7ff9b17cf32ed0709a997517e5756857d67e05aad90d","c97d027d636627f61f56392c2778954f498c6f548dfb77674f347f75a4ab44e6"],"ts":1793237983,"cid":"poa-mainnet-1","sig":"3pnYMnjiLz3xEYWXmdhDoPuhj7LhYgG7QNKhBoefayzLWkXUazfQxgtTNq73VA7heqmERsw3pcByae2RoLAmoNyH"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:43:51.303Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}