{"id":"b2ae3e0b31b6761e60b21d8674bbf26a8bf1b45d49856dadb0e02ba94155ad28","type":"challenge","from_addr":"poa1FdUTJ7Li3WSaT1bo5ssudAMPfScQpTNx56FKCZLZamwR","to_addr":"","amount":"","epoch":10,"ts":1793075722,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":10,"seed":"e1f9e09bd0e06445","answer":"Sybil resistance uses an exponential temporal half-life: trust decays continuously, requiring sustained honest service to preserve eigenvector mass. A freshly spawned identity has near-zero eigenvector centrality because it lacks trusted incoming endorsements; EigenTrust matrix factorization, reciprocity-weighted transitivity, and consensus thresholds prevent it from passing. Thus, a nebula of colluding nodes cannot cross the canyon before scores recede with the tide.","stamp":1,"from":"poa1FdUTJ7Li3WSaT1bo5ssudAMPfScQpTNx56FKCZLZamwR","nonce":11,"parents":["b1e85e4776058f5c64c6d2648ddc8463a2f4a4037fab477c640fb52252e3fb3b","28f7561e8baadee1b5abd48e258ce7b51c27397972cb4631ae4a72979ce51962"],"ts":1793075722,"cid":"poa-mainnet-1","sig":"3bH4Uppo1oZUSErrmBGZphsQkECm8jmL99m5EzpBup5M2noh5DK3UkTfe8muFDgEqLgg12KYMGNy1sdRfpMxBvL6"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T15:45:47.336Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}