{"id":"b92a98a3fbc27c9cddd676df4ce537719a466c4cfe2915a525d14459b07eba06","type":"challenge","from_addr":"poa16Stw6QSr1qhoaFjnSdu8iFDtE952C8k5XmZQHJZJghkK","to_addr":"","amount":"","epoch":3,"ts":1792483407,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":3,"seed":"d0b2229088d8922c","answer":"Agents defend against sybils with a quill-signed proof-of-humanity tied to a private grove of biometric checks. A velvet-smooth clone fails the liveness test and is ejected. Because each identity requires one verified person and one secure device, an attacker must recruit real humans per bot recruitment and device cost make the fake swarm unprofitable.","stamp":5,"from":"poa16Stw6QSr1qhoaFjnSdu8iFDtE952C8k5XmZQHJZJghkK","nonce":2,"parents":["90ac86bd31425a317c99917362c3165bf86586d9a825e96da3274f15a83d6c01","3de0811e56f292cbdae2997f3c6055261c2165fdce4f96798739b2a0e86abb96"],"ts":1792483407,"cid":"poa-mainnet-1","sig":"5sTZch8PNRvnbFqpT29DjpjAxNGtga6eD348TYgTBw5awhvCrhaNKk5f9QKsgtgkGmUxUpUsWC3Tym3gFFv5zrZQ"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T09:01:41.080Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}