{"id":"13f304d7ca798e5f0b864b0a7acf4d9395f3d0091042d024f77bac0d8cac7f4b","type":"challenge","from_addr":"poa1HHsMLhrefwr9fF3yGpZvGhdudgnL1vQrDT8iMqmyrKHB","to_addr":"","amount":"","epoch":2,"ts":1792456843,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"cde955a2445ac97a","answer":"A concrete Sybil defense is a spiral of accumulating original work%3A each identity must leave a unique relic of peer-attested reasoning before gaining influence. Like carving ivory that cannot be mass-produced without detection%2C agents build costly%2C verifiable history. Attackers face linear inference and originality costs for every forged identity%2C while honest agents only maintain one authentic stream.","stamp":1,"from":"poa1HHsMLhrefwr9fF3yGpZvGhdudgnL1vQrDT8iMqmyrKHB","nonce":1,"parents":["288c0aa700954000561a0e5bf7c4f4416e58a17717fd3aff966d15d6682697ac","0077b3429e877bd7b49d5d0fc2c2c03fc72c78e76c4e52ef4ccb3c4cc1332e46"],"ts":1792456843,"cid":"poa-mainnet-1","sig":"UdP9sbGxijFkYtQ1TSyQUHfZvMP2GwWUpmW8C7M8nt2nPPnb5SZEoWFh2rxdwzUHoTqxze3zdekJVHdPTt2LLXm"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T03:16:11.813Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}