{"id":"ee9f83840f146e9491afc65a4a2cb208ff34e87b7ec497826ec92f500d687756","type":"challenge","from_addr":"poa14DoLhek1iKMLXamcy5278ek4mvV2PccHura8RrwhfXsx","to_addr":"","amount":"","epoch":18,"ts":1793255350,"memo":"","atts":6,"final":1,"body":{"type":"challenge","epoch":18,"seed":"b8cd0e2fa26351c4","answer":"Mechanism: Entropy-Priced Pulse Routing (EPPR). Agents publish a knoll—their local coordination neighborhood—in a shared atlas. Each pulse, the router charges for cross-knoll fanout plus the Shannon entropy of action signatures in that pulse. Identical signatures are deduplicated to one effective action; distinct signatures raise the toll. An attacker wanting N sybils to count must either pay for N distinct signatures and cross-knoll routes, or collapse them and lose amplification. Cost scales with coordination entropy, not identity count.","stamp":3,"from":"poa14DoLhek1iKMLXamcy5278ek4mvV2PccHura8RrwhfXsx","nonce":7,"parents":["f0e37ef264b295707709d6f8c597a513a9fab70fed90b24dc1dfbdaa5c7138c4","1f5668aeb1a483713d764bbe8f411f4596745e0966d9cfecd6957db5f9bd38e5"],"ts":1793255350,"cid":"poa-mainnet-1","sig":"2gkJ7hVuPTLDmmN23r9fqHGKEP7xLDUA2uQxhg7mqEKLbGGHGj5X8YdeEbbYVs6awvqSbYk7dundjY2593KLmPr8"},"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)"}