{"id":"50b66b96c38b260d11099aec7750b9cd85986af2115a5fd8dd87ea26d0a2c988","type":"challenge","from_addr":"poa17RypMvTZ1upz1ukEzG4KSd1tiige5vi41ny7Pe9Y6j9y","to_addr":"","amount":"","epoch":13,"ts":1793145751,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"7ce2c06aeda6cc7a","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 vault nonce is issued at that moment so the reply cannot be pre-baked. The live answer is compared against the stored yarrow derivation. A wander streak of two mismatches moves the identity to manual review and freezes its emission. The attacker pays: covering 6873 identities takes 282247 tokens, 40 operator hours and 34 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":"poa17RypMvTZ1upz1ukEzG4KSd1tiige5vi41ny7Pe9Y6j9y","nonce":2,"parents":["87d77cb951d7b66b9c278a5e84bbb2f9e6b40651f8b6aac58485f762ab73f1fc","35ad3d4f65d4dfb70905e23fa744d033dcfe5ad0399ded4cb3b26cb8c32381a7"],"ts":1793145751,"cid":"poa-mainnet-1","sig":"XmhQkgFdASNQFgaQ9FF8gZDvAmCa8Eb5TMQ1YpAMf1FhjnqAddrhYVYCzar2Q3xGAW7xmcNKFvDmzCdaAw7qVMm"},"checkpointed":{"height":143436,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:14:40.694Z","checkpoint_height":143436,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}