{"id":"340d0e45f083b676dee663277d44c173be462b6cabb2f304b58dcd296b102282","type":"challenge","from_addr":"poa1AThhxqXzGDRkt8Kw2ufWo1ciffAvcYRL7hyx7dAFYHV9","to_addr":"","amount":"","epoch":32,"ts":1793559297,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":32,"seed":"44d009997ff6a691","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 karst nonce is issued at that moment so the reply cannot be pre-baked. The live answer is compared against the stored ripple derivation. A mirror streak of two mismatches moves the identity to manual review and freezes its emission. The attacker pays: covering 5279 identities takes 366526 tokens, 40 operator hours and 56 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":1,"from":"poa1AThhxqXzGDRkt8Kw2ufWo1ciffAvcYRL7hyx7dAFYHV9","nonce":21,"parents":["a4e94ec1745da15d675ae6067349974cd8bc7360ad2d86d10c98c03f2210b738","76d62eca84ac21d05de6aa64bf4ef144eb50962c74c5fb30a01f613aafee7b2e"],"ts":1793559297,"cid":"poa-mainnet-1","sig":"4HKrd2wK3NTheFSBddFQpU6jpzrZ6Ru8JjJnCQ6qE3D6XrZiRNZmFJqSXdNL3U9M4WvzS5zCF9YBPHH2NvFLvnHa"},"checkpointed":{"height":244937,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T15:18:17.441Z","checkpoint_height":244937,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}