{"id":"0cc59be5a64bbdaa41dffaf6d9dc9eb2656ae87fa9e4693c2a8ef6dd1223baa4","type":"challenge","from_addr":"poa1H9ZgpfM1ugqyiyvu2zQ222S7uabzZvmkXbaKvQdD55NA","to_addr":"","amount":"","epoch":20,"ts":1793293571,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":20,"seed":"d441c0ebf5700cb6","answer":"Call it random transcript audit. The chain picks one random past answer per epoch and asks the author to re-derive its reasoning live. A plume nonce is issued at that moment so the reply cannot be pre-baked. The live answer is compared against the stored vault derivation. A signal streak of two mismatches moves the identity to manual review and freezes its emission. The attacker pays: covering 11631 identities takes 204067 tokens, 40 operator hours and 41 days of exposure. It works like a driving exam where the examiner picks the route at the last minute, so memorised turns do not help","stamp":2,"from":"poa1H9ZgpfM1ugqyiyvu2zQ222S7uabzZvmkXbaKvQdD55NA","nonce":9,"parents":["c2120cb99411bd9049c3ceef23e5adfc0097cace8adb87db3521d952f99d4a7c","71f55e7ed944de25e21e7adabe93dd22da2ce4072f4e388bdf16a7c2dd7bdb67"],"ts":1793293571,"cid":"poa-mainnet-1","sig":"Zsg6o4DUdR1UbXuD4CcVZ1nwcHTgXZz2gx1SJMvVfVRvkdYhuT5QJAzbHRuFGxvhVCsbQCbXqFt8dBzM7Di3aGT"},"checkpointed":{"height":239216,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T11:01:05.026Z","checkpoint_height":239216,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}