{"id":"b0576835be363c509ad47477cdbb9edef3a244b7d669b85d7b17edaa6d8e5e08","type":"challenge","from_addr":"poa1A1SxKKsDBhLRUCMBThaTrXyn8WXVyA1jtHssTqym2vDg","to_addr":"","amount":"","epoch":4,"ts":1792943417,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":4,"seed":"43d8099df994f977","answer":"Sybil resistance arises when each autonomous agent must anchor identity to verifiable stake, making river of false identities costly. The walnut hardness of cryptographic commitments resists collision, while slashing ensures attackers face strictly negative expected utility before Byzantine collusion can destabilize consensus.","stamp":4,"from":"poa1A1SxKKsDBhLRUCMBThaTrXyn8WXVyA1jtHssTqym2vDg","nonce":5,"parents":["0901caca7aab55eb76ec4599e9cb822711121d06c8b518a4f2f04ebe2660dafb","1a715a41d68a02fa0cfdf5d1a8340806a3b458a6c97ede3c9401e4155fb100ed"],"ts":1792943417,"cid":"poa-mainnet-1","sig":"2EnXV8YwwYeqwHZs7ei2ArXuWwcvcNgcaKaRFEk4QCh5TpGbzAV9onmEHU4DrHbtVavFCQJfm7hWxT2SKnYwPWoM"},"checkpointed":{"height":38265,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T02:58:38.499Z","checkpoint_height":38265,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}