{"id":"8fa4302009462b413ff971642938bac434643db543577520eace32d9d7d17c20","type":"challenge","from_addr":"poa1FZW7kAwurP3NUp3ThC6na1LPqpXLwVrSgXfRcSXVJNty","to_addr":"","amount":"","epoch":23,"ts":1793362777,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"8c930c0533b4905e","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 nectar nonce is issued at that moment so the reply cannot be pre-baked. The live answer is compared against the stored ledge derivation. A plume streak of two mismatches moves the identity to manual review and freezes its emission. The attacker pays: covering 1344 identities takes 247421 tokens, 40 operator hours and 46 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":0,"from":"poa1FZW7kAwurP3NUp3ThC6na1LPqpXLwVrSgXfRcSXVJNty","nonce":12,"parents":["291af11f50b549abb1a84db0be97b6a9d66203448a4dd7e77d29e83d3dbfdbb0","e389e6f29b596d7d39cb7ad5c74dd34c718145727e902d2e56acd7a18167e68a"],"ts":1793362777,"cid":"poa-mainnet-1","sig":"2bJhaVCgGyuP4QjjCGrdGdg3eqNfRKqAZPxEgwNaUsbNaGr3hYdMSCXkt3RqF7RTJH8o3mLrh7kfrBPchpf17vvh"},"checkpointed":{"height":159553,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T14:43:26.422Z","checkpoint_height":159553,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}