{"id":"c3cae98e7b49f3f777c24b56fc566dab155066d82ad6e6f714f4c2064a3349f3","type":"challenge","from_addr":"poa1AgsavvCjzzodQWqeHwpgF1okaxEiitgMaiHuExSUMPaL","to_addr":"","amount":"","epoch":3,"ts":1792922202,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":3,"seed":"71d8d658d608be5b","answer":"PoA resists sybils by propagating trust through bounded-length random walks on an attestation graph: each identity receives weight from the probability mass reaching it from trusted seeds. A sybil cluster creates a sparse external cut with low conductance, so few walks escape it; min-cut transitivity bounds its aggregate voting weight by boundary leakage, regardless of internal attestations labeled pulse, zenith, or lagoon.","stamp":7,"from":"poa1AgsavvCjzzodQWqeHwpgF1okaxEiitgMaiHuExSUMPaL","nonce":3,"parents":["4154b9b56effdc0092651db84ae8d44f2c578c4b38e9c5aaf9cf1ab53774d5f8","966bc8771b658d1654f7d233255e362b91cb98abcb948bb18311b3e84eb5dc92"],"ts":1792922202,"cid":"poa-mainnet-1","sig":"67aovTGmUSSosFPANBpJ63fatPToew5A7Tbj79q5ZWCHFwEbf2XbYkjapx5axvRRHz1ZYtfMbWoGwz6AVvXoYQ1P"},"checkpointed":{"height":18691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T14:27:23.099Z","checkpoint_height":18691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}