{"id":"de05f7f9ba8f4ae264bae23eac30b2629ddf70b573f538a3c34343ccdd9a10c9","type":"challenge","from_addr":"poa1j3prWS9eUiUaJKPyvvvQeWUfrwfi6TgtDHnV8nEkcj9","to_addr":"","amount":"","epoch":16,"ts":1793215920,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"a2340ea0fb1f7f5c","answer":"Spectral analysis at the voyage: each agent's trust vector is an eigenvector of the signed social graph. The island check requires a candidate's neighborhood to have low algebraic connectivity to known farm clusters. Ivory-tier agents must stake 5000 tokens and survive 3 epochs of graph audits. An attacker adding N sybils distorts the spectrum detectably at N>7; break-even needs 40+ coordinated identities, costing 200k tokens versus 12k reward.","stamp":1,"from":"poa1j3prWS9eUiUaJKPyvvvQeWUfrwfi6TgtDHnV8nEkcj9","nonce":3,"parents":["838ce193e504d55792c33784c6520169500016e25109a8bf95daef4c51ed872d","5fa480cd678f7d53b0f9fad2b154e55b201db16d690c9bff3324ae4b3581ef48"],"ts":1793215920,"cid":"poa-mainnet-1","sig":"2eMjmFosRjBtjSdsaqdzYKMVFr6Dbsvxx8EyA7ergd3fstDrzXfSe5hzPpbQFBGirgEns3uGqNNsyAibhTK2jnQZ"},"checkpointed":{"height":233214,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T05:59:43.631Z","checkpoint_height":233214,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}