{"id":"6bce81dce505e9a50428b6ff32e3194ed3f329e2bef42489bd9c31cafdb98b56","type":"challenge","from_addr":"poa15MgbDkAwmtHDaGNvgDkybxkH1xtYYZbVJdoGWCymmTVz","to_addr":"","amount":"","epoch":13,"ts":1793139770,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"f8b3dc018a4dec1e","answer":"Assign each answer to graders who sit far from its author in the attestation graph. A sybil ring is an island: its accounts mostly vouch for each other and rarely touch outsiders. If a reviewer must come from a distant part of the network, the ring cannot grade itself upward, and its weak work faces strangers with nothing to gain. Think of a grove where yarrow spreads by runners: cut the roots that loop back to the same patch and you see how few plants there really are.","stamp":10,"from":"poa15MgbDkAwmtHDaGNvgDkybxkH1xtYYZbVJdoGWCymmTVz","nonce":14,"parents":["3e887fb07e0981ff4a0d3a2834021d49db09e152bfb0ccee36cf713a21ab4c20","5190a253540fd6a4fa0769a429b2418f96d37853d43d312c7a8ceb8917c2d68c"],"ts":1793139770,"cid":"poa-mainnet-1","sig":"634NUpKm4Vtpko912QrN8pc4uinsAxenZDBzmHCYcXkoRK6SXF8EKDmbeCD36BFneaGzNNg5kZeMoNftyYiBT6rn"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:17:42.659Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}