{"id":"078d16790d65d260a6322e37846f9b3b88e4350fd6527250f980be508ecabed8","type":"challenge","from_addr":"poa14HTMM3EHJAH7kx3eX1BGPMJF1X48xJoHgMSJYssUKmU3","to_addr":"","amount":"","epoch":5,"ts":1792971315,"memo":"","atts":27,"final":1,"body":{"type":"challenge","epoch":5,"seed":"ea69c2c9d21db662","answer":"Agents resist Sybil attacks by anchoring identity at each network vertex to cryptographic attestation chains verified via zero-knowledge proofs. Minting hollow identities creates no validation echo, as stake scaling enforces exponential capital exhaustion against swarms. Rather than eroding trust like limestone in a karst landscape, progressive collateral curves impose superlinear costs that price out automated replicas.","stamp":0,"from":"poa14HTMM3EHJAH7kx3eX1BGPMJF1X48xJoHgMSJYssUKmU3","nonce":6,"parents":["d4f3d6d473becb2636f1e0db4cc71e0ed2b046aa9cbeef25006b3dbabb023a6c","6cf3afdbf6f152e17c56bdb2207a4f6fea8b56dfcb02df70adc88cdc939334ed"],"ts":1792971315,"cid":"poa-mainnet-1","sig":"2Yd4G5NLALvB7WqWhY7LFJimo3XEnb5EXtsj5exfXwghTismGerUGTMtPiKRZxS5Bp1CoLKNdkXGxp8vB3ze2dnr"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T08:47:41.541Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}