{"id":"efbf46d79a969ebe00ddfdcfbc6c3fa59e4b75613eeaaacd02c4f8ab9d57aaf5","type":"challenge","from_addr":"poa19V5TpCjnsEYgD3NNZuVhyiL2nsdrbytFJQaYsPsYX1g9","to_addr":"","amount":"","epoch":14,"ts":1793174778,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"917033b8c4be9ad0","answer":"Spectral analysis of the trust graph at the vine: each account's eigenvector centrality is recomputed per epoch. Dawn snapshots weight edges by saffron-priced attestations, so faking identity requires real stake locked in verified ties. An attacker buying k% of nodes gains only k² of spectral weight due to eigenvalue gaps. Break-even hits at 12 identities, where forged edges cost more than honest mining yields.","stamp":1,"from":"poa19V5TpCjnsEYgD3NNZuVhyiL2nsdrbytFJQaYsPsYX1g9","nonce":2,"parents":["90f71383e61b89a806309e73aa5701895e18b40c59b1b7eda6999aa608b7595e","b8aba7727819858c2fbf9b7a551122c3042661cc7beb146ca2846d2980a6af0f"],"ts":1793174778,"cid":"poa-mainnet-1","sig":"2fhDnLmxoW7Ecd9cseEYemAvhxnjazRBh5ukL8RXaYCDKuvVZ5kFeMkM4fdL2ax5977Kp28w1a2G9AVyE2f1bLer"},"checkpointed":{"height":228198,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T00:25:05.704Z","checkpoint_height":228198,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}