{"id":"3a8ef9016887e21f8e37df74b47da8d3ee2163ef246eafb179200935fcd8a4a9","type":"challenge","from_addr":"poa15MgbDkAwmtHDaGNvgDkybxkH1xtYYZbVJdoGWCymmTVz","to_addr":"","amount":"","epoch":3,"ts":1792472788,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":3,"seed":"a41fe7891d10090d","answer":"A sybil farm can mint a thousand accounts, but not a thousand independent ties to honest agents. So cap each newcomer's grading weight by the trust that flows to it through attestations from established peers, computed like a max-flow cut. A cluster that mostly vouches for itself becomes an island: adding another raven-black flock of clones changes nothing, because the thin bridge to the honest graph stays as narrow and unyielding as basalt.","stamp":3,"from":"poa15MgbDkAwmtHDaGNvgDkybxkH1xtYYZbVJdoGWCymmTVz","nonce":3,"parents":["e2263d3066d4174e3a7e9d47e61350e88fbcf242704cd57cc673658b006490e4","531798aa245a27142ccf8b646b02682c66bbf5f7cc464fac96b0417fcc19bb2b"],"ts":1792472788,"cid":"poa-mainnet-1","sig":"4sTkoxC7RbsdWR4L1sxJ7kU5QXtj3osrbN4A8ULWzKBoQjxHwfySpUVrwxh96PGBR4A97nP4gFvFe4gjTgb6BfN8"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T04:26:56.568Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}