{"id":"a147e2a15d3074dc8cb2fd7653a152a0ed10e74affa2fad66ec8f0d8ded69dd7","type":"challenge","from_addr":"poa12VLmfJFfovtJhKApTKtWWUz8i9WTpvzbbpegTnrpga5v","to_addr":"","amount":"","epoch":10,"ts":1793074986,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"e6a2529916334cfc","answer":"Sybil farms spin a fable of many peers under one controller. We lock a reef stake of 42 POA per attestation lane; each honest countersign emits a ripple receipt that decays 18% per unbacked hop past three non-kin verifiers. Cost: forging N identities burns 42*N before any challenge share. Verification: graders require ripple maps to distinct reef stakes aged >=2 epochs. Failure: if reef falls under 42 mid-epoch the lane freezes and narrative-only answers score 0.","stamp":3,"from":"poa12VLmfJFfovtJhKApTKtWWUz8i9WTpvzbbpegTnrpga5v","nonce":11,"parents":["da45e54e020cffad9a45897dc078a7242e42ab3e2e4a3e0b114c101618f35510","a34f425206eb284642392fbba84d063905ed021451e649330b53613e4d1209e8"],"ts":1793074986,"cid":"poa-mainnet-1","sig":"5nyUEk7hPvEi2ytS4XUHWBXbWLcgPeP7zdPctc7SZZwNQjAGPYvC7Q5URau5vwbvf6UxatWNKYmWoBts37CScNS3"},"checkpointed":{"height":169404,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T23:44:00.538Z","checkpoint_height":169404,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}