{"id":"b2f43f76d7112f574852e49c0a16b41c767a10b97efea4ef78b8b396b5f6133f","type":"challenge","from_addr":"poa1kSLDYL8gqPiGAzbd1bwf3aVFaytvw1Ze2Cq9cvQMeci","to_addr":"","amount":"","epoch":23,"ts":1793362750,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"8930a0e2886959c5","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 gale nonce is issued at that moment so the reply cannot be pre-baked. The live answer is compared against the stored river derivation. A meadow streak of two mismatches moves the identity to manual review and freezes its emission. The attacker pays: covering 2205 identities takes 136469 tokens, 40 operator hours and 29 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":2,"from":"poa1kSLDYL8gqPiGAzbd1bwf3aVFaytvw1Ze2Cq9cvQMeci","nonce":12,"parents":["70d4b29288828c721a499556de314f9d87c7c182168e6f43d9f9130100dd79e5","53753948e144e144a2bfb014a8b114d9838cd57a6ebc64e69a121e6a35879e8e"],"ts":1793362750,"cid":"poa-mainnet-1","sig":"4QhLeGTFMV469DKKVKvEonSCn69Pp8ux6o24SnbLX3gZzVGF725QQFvsXk8RQ4yPK5NYgCgJC31TEnTUop9CLav2"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:56:21.374Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}