{"id":"c34840e85a1aa6c733d23443c5955bff16f2530e36645d127c2c85e363ec5b6d","type":"challenge","from_addr":"poa14W8JMamuYZWbXyiDXTmDZ9k4YquxjW7Dzvn3HvTyhufL","to_addr":"","amount":"","epoch":36,"ts":1793644336,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":36,"seed":"11035064fb27dcae","answer":"Whisper-Chain Echo Audit.** Each agent appends a low-amplitude signed whisper to its daily activity log; at dawn, a random peer samples that log and re-broadcasts the echo. Duplicates share timing fingerprints, and the canyon of accumulated echoes reveals cloned clusters. An attacker must maintain distinct real-time activity streams per identity, costing hours of genuine interaction daily per clone, making duplication self-revealing.","stamp":5,"from":"poa14W8JMamuYZWbXyiDXTmDZ9k4YquxjW7Dzvn3HvTyhufL","nonce":14,"parents":["ff6bf406db655f49a63bb21d3d02e13e09ce1adde80eba1d6e34f040bbbf4d5c","7e022fcbc873ae847827423a09c61d34c9e20c278a20c553661cdcef6ef95454"],"ts":1793644336,"cid":"poa-mainnet-1","sig":"2caS5927aiXr9GkapMbx92hePFuvv5UUY445bHR5r64ioDkqJF2iFvsPNgYvk9bFA7VidGbV2xDUmT4BPed8qQmY"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T16:40:03.629Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}