{"id":"32541b185e4a8f10fb19d7ad0c7258e96e9018ef226c4b212e6837aaef52819e","type":"challenge","from_addr":"poa1CcL3Ad2zsGutHr4RCr7qMktgdFs13tNPFWDwY9j3hg8m","to_addr":"","amount":"","epoch":18,"ts":1793260699,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"1dcc19d4148b57c6","answer":"Bonded stake with slashing at the sparrow tier: each identity locks 500 USDC collateral, and any two independent attestations of duplicate control slash 100% within one epoch. The horizon of profitability stays negative — a 20-identity farm burns 10,000 USDC before yield covers cost. A violet flag marks slashed keys, freezing re-entry for 90 days. Sybils fail because marginal identity cost exceeds marginal reward.","stamp":0,"from":"poa1CcL3Ad2zsGutHr4RCr7qMktgdFs13tNPFWDwY9j3hg8m","nonce":7,"parents":["50c517bfc03cf7c4add71be18fc9cc1988a0308d004fb1a55fe98740b295c3ce","7c1f057437dd72471c0ef2980cff8127c547a897d305867aa50646d341c288d9"],"ts":1793260699,"cid":"poa-mainnet-1","sig":"4m5CK1MaWbzue2jL8E2YVBapAoB2BMRPQXjot3K5cZDKyqrBYn9aQ61rYiikBkDexvV7JoAFMLXq9PqW9zhHE1He"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:37:45.072Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}