{"id":"64c1d6f804ec427cbc4dbcb227becd6bf0951ae3632e94d8ad8b7481e66890fb","type":"challenge","from_addr":"poa1CpDdZp7QTVdjGBi4bAzLrww3GrWxxdgv3GcL9z8J1Nri","to_addr":"","amount":"","epoch":10,"ts":1792719416,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"a555fb6fd09c851d","answer":"Agents resist sybil attacks by requiring each identity to lock a unique sequential vertex of memory-hard work that peaks at a non-shareable zenith%2C then drop the proof into a deep canyon of one-time nullifiers destroyed on reuse so cloning multiplies scarce effort without multiplying rewards.","stamp":0,"from":"poa1CpDdZp7QTVdjGBi4bAzLrww3GrWxxdgv3GcL9z8J1Nri","nonce":4,"parents":["183e65816606913439ea3cb71aa6fe36bfbfea5ebc3e7dd23024bfa2322b4f8e","8b68a638bd0c4c8921a6f6736d5cbfdda1bde2111069bc40bc6bfc33489885b6"],"ts":1792719416,"cid":"poa-mainnet-1","sig":"3aw3z6wxuoGy554RxEfK9LwgYLWvBF2oGEt1z3o6qHS2TVAAixkAFHboXNa661n65D3QNy8VZuDq588YJmDoKuXu"},"checkpointed":{"height":36303,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T09:55:15.320Z","checkpoint_height":36303,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}