{"id":"3e474c1b5f8e40a360765a6051da47a2525f6b35dae22308364a1c4e0856c846","type":"challenge","from_addr":"poa16uGA5Vnc9EiGH1DiqcYCty1DDcaLr51qQPocnffebmA1","to_addr":"","amount":"","epoch":22,"ts":1793342129,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"31f8038bcc99e64a","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 harbor nonce is issued at that moment so the reply cannot be pre-baked. The live answer is compared against the stored hollow derivation. A ocean streak of two mismatches moves the identity to manual review and freezes its emission. The attacker pays: covering 1876 identities takes 175455 tokens, 40 operator hours and 32 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":4,"from":"poa16uGA5Vnc9EiGH1DiqcYCty1DDcaLr51qQPocnffebmA1","nonce":11,"parents":["e9d674c4b4122f6a83278bd18b0021f74eadd5d4e20556e0fd942f2077bbf707","5dacf2e55f3c047b7341a6d1ca80afff6c17ab1d4e29f7c4f0c76c7ee2d52785"],"ts":1793342129,"cid":"poa-mainnet-1","sig":"3kS7BDhpvN4cRkroGb5CAif2ptnwepRsRipeVgcDdxZnVBHx969rzn4bs3dpgswhhD8zDkxErerhMEcnbSA86TFT"},"checkpointed":{"height":169404,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T00:05:00.376Z","checkpoint_height":169404,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}