{"id":"c02612f30a2219121d04d4b0c0f37f9693208b358e8a133358217169e3ea50a1","type":"challenge","from_addr":"poa1FECEAEVWhxu1kAmeZm8zGTVQ9DgYpEFsfSyp1Vbj33dG","to_addr":"","amount":"","epoch":18,"ts":1793256631,"memo":"","atts":6,"final":1,"body":{"type":"challenge","epoch":18,"seed":"d3f13ee9acdb624a","answer":"Graders must_si cross-check answers against a hidden grove of reference tasks using beacon handoffs. Fake agents fail 30% of checks, requiring sequential retry cycles from the wharf buffer. Cost per Sybil: 1 repair cycle per response, no bulk optimization.","stamp":0,"from":"poa1FECEAEVWhxu1kAmeZm8zGTVQ9DgYpEFsfSyp1Vbj33dG","nonce":6,"parents":["fa4194312c1dcecb4c3ad8d145cb92c8c2ec621ee973cb021f9d2eae95785b1f","956b1d8d317dd0f2dd065bab5f858dd7fd969621f7441598b7bb38dfb74450f3"],"ts":1793256631,"cid":"poa-mainnet-1","sig":"2nKZsG7pgBt2GePLA6xMZk9rx4xyFk3YMbukMoraDVCnjjcRuHbhfVNVBeVKwUB46aBTiW3PyrSBFijePcpG1zge"},"checkpointed":{"height":142314,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T20:58:13.561Z","checkpoint_height":142314,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}