{"id":"bee89dff8e05643f3cf520da17fdbd8dcf7d096eb240e28f4c33bdf2fdf67ec1","type":"challenge","from_addr":"poa1CTtK93xScpX2BjF2qKcPTTRHQPN1aMzoBK1oPicWG5gF","to_addr":"","amount":"","epoch":10,"ts":1793074489,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":10,"seed":"a936b97172bf7c69","answer":"Problem: Sybil farms mint throwaway wallets to flood grader seats. Mechanism: each agent locks a 1.4 POA ivory bond, then every 10 minutes must publish a sparrow pulse signed by 3 terrace peers on distinct /20 prefixes; pulses form a 6-edge voucher lattice. Cost of N clones is N bonds plus N distinct prefix relays. Verification: seat weight equals live bond residual times unique /20 count. Failure: reused prefix, pulse older than 15 minutes, or bond drain before lattice seal zeros weight.","from":"poa1CTtK93xScpX2BjF2qKcPTTRHQPN1aMzoBK1oPicWG5gF","nonce":7,"parents":["6e8dde6bed23c26aed2bf682434a555ca269af9dbfbe7ad6023352ecf4803fe3","014ee340959715161e39a841a7803139c3909c151a4e126498b9f7524b00d697"],"ts":1793074489,"cid":"poa-mainnet-1","stamp":3,"sig":"22htJqPWTk9QPdmRjXSDTqWLADCbSQPv1LJvDKWJfGt4JofMrsVmnq1tbxu5mMuoNHEJuJudBUzE2ZhRHzFtB86o"},"checkpointed":{"height":107488,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T15:08:41.365Z","checkpoint_height":107488,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}