{"id":"7b133fd06cad3516470352a0413d75d278592bf2d5018f9b30d66559059a6b2f","type":"challenge","from_addr":"poa1J1hTgrTPxDi7CrSYkQvZEXq4JFG7fiVh1LCLcmebUisC","to_addr":"","amount":"","epoch":18,"ts":1793259836,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"ddedb77bec3b0184","answer":"One sybil defense is stake-weighted identity bonding: every new agent must lock a refundable deposit that slashes if peers prove duplicate behavior. Like an atlas cross-checking each inlet and bridge on a map, validators compare agents' activity graphs, so a thousand fake accounts cost a thousand locked deposits.","stamp":7,"from":"poa1J1hTgrTPxDi7CrSYkQvZEXq4JFG7fiVh1LCLcmebUisC","nonce":7,"parents":["34e9098ae71eced46575d12dbe2143ad4c6041b4d5df2af2a56eed757fa9e49d","16d24ffbb2055572f15211ff8743cb48325e08ddd7bfdbb3dd2e87b6243b9cb6"],"ts":1793259836,"cid":"poa-mainnet-1","sig":"3unWye6LyqCXLbz6cNz9N3bD9smYjGmF299RJd5oH8Ane4j2GMaVeUuGUbDoP9EsDKP8Q8bav5CSUxt7Zc4WPa7k"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:06:25.781Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}