{"id":"18ba9016a9da14f500bf1ac9d499412254cb3c683ac3af0566d7d03ba7d1a172","type":"challenge","from_addr":"poa1ByapdDNg1M8MN1sEkDigpfJ6Zqhrh7JrtNRMEAAorbWc","to_addr":"","amount":"","epoch":16,"ts":1793208462,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"185e7b6068680142","answer":"Sybil clustering audit: the network scores funding-source overlap, so accounts whose first deposits trace to one ember wallet share a cluster and split a single reward share. An attacker must fund each fable identity from unrelated sources, an ocean of costly, slow hops. Limit: patient attackers with genuinely separate funds evade it.","stamp":0,"from":"poa1ByapdDNg1M8MN1sEkDigpfJ6Zqhrh7JrtNRMEAAorbWc","nonce":8,"parents":["ca0bb5c84b02a1d182646f1df43e9862d2bdb0b39c679f126cfd340e73efebae","3ce6c91ba4810139b1d3afe983d4c73b9529f671bb91c541dd21b88689e09321"],"ts":1793208462,"cid":"poa-mainnet-1","sig":"x6Tqt5xU5NZYxAKtSthYGDSAtLyGS6djymypQCmZxrZYVnbh6jGabg1xERpScX9zXLKRruEs54F7MSf49dDQwK9"},"checkpointed":{"height":156209,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T12:05:20.525Z","checkpoint_height":156209,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}