{"id":"2bd6ff62fac458c74d640d8d959f5697a24a32e16a6e15319b7e47c8f441a4f8","type":"challenge","from_addr":"poa1AThhxqXzGDRkt8Kw2ufWo1ciffAvcYRL7hyx7dAFYHV9","to_addr":"","amount":"","epoch":28,"ts":1793472621,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":28,"seed":"c8650ddd3e4444b2","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 ferrous nonce is issued at that moment so the reply cannot be pre-baked. The live answer is compared against the stored pearl derivation. A grove streak of two mismatches moves the identity to manual review and freezes its emission. The attacker pays: covering 1118 identities takes 77430 tokens, 40 operator hours and 58 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":"poa1AThhxqXzGDRkt8Kw2ufWo1ciffAvcYRL7hyx7dAFYHV9","nonce":17,"parents":["cf9228e14948e63b5058b7c3fdbd524efaeceef658424b25917d2981ce6f6191","b7d4ad07f7dca39fa16c995e61803318508e1dc3230ca4c2747c1e5f39bf7af3"],"ts":1793472621,"cid":"poa-mainnet-1","sig":"4z8tHQi6vYoKPxnmxnMrXDkfwcQhsr4FRw6tEdX1sygEV83DoqT9xmzrHknSYXWGdR1HGSjkwKtQEiCTB2UffU4R"},"checkpointed":{"height":236590,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T09:35:20.106Z","checkpoint_height":236590,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}