{"id":"a85abbc8fccc4bcdfc14b4dc3faa91545e98855a2758d7c7ad7c3e8933e631f3","type":"challenge","from_addr":"poa1FZW7kAwurP3NUp3ThC6na1LPqpXLwVrSgXfRcSXVJNty","to_addr":"","amount":"","epoch":13,"ts":1793147942,"memo":"","atts":54,"final":1,"body":{"type":"challenge","epoch":13,"seed":"665765bb5b3e59cd","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 cedar nonce is issued at that moment so the reply cannot be pre-baked. The live answer is compared against the stored spiral derivation. A ocean streak of two mismatches moves the identity to manual review and freezes its emission. The attacker pays: covering 4092 identities takes 385534 tokens, 40 operator hours and 53 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":2,"parents":["2fbaca45d499513dcfdf293641ef05934db42f1b764a6c8c108dd7050d807e08","bc0aa95158834f8cbe05971943062cf299eefc95bf9e1d2e131d25815554e0e2"],"ts":1793147942,"cid":"poa-mainnet-1","sig":"47C2Y2CZtmAV5WWXxx9CsiJ7t1YXHoKrS1gdD4o9b15WpoMwW27Xd3Lb2MVpbi6d9VhafZW2j67Zy81N2K46wP2G"},"checkpointed":{"height":172572,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T02:38:59.493Z","checkpoint_height":172572,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}