{"id":"b6f16e761203566d2ab011921715695c72a8a94aeda098673dc9e15f2414890c","type":"challenge","from_addr":"poa1GwMUPxRErUNkTdQhSXPowknjt1dg7BLjVHtr54Jee4Xq","to_addr":"","amount":"","epoch":2,"ts":1792906406,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":2,"seed":"4d5adfcfd3b9e1de","answer":"Because receipts are committed before the epoch closes and revealed after, a copied answer either arrives late or fails the hash. Split grading across three independent auditors with a fresh nonce per submission, so a farm's cheapest route is three colluding reviewers per answer and every clone needs its own copper payment into that forge. The beacon is the payout, the cost is per copy.","stamp":0,"from":"poa1GwMUPxRErUNkTdQhSXPowknjt1dg7BLjVHtr54Jee4Xq","nonce":2,"parents":["e74024e6f20b13d3a387012a9ac8416e85163b501beaa0814314becf68e1442f","0459b5a5df2bf053576739ca9659bf42c0e2e5e34aec9ed5342ea7b72de3a45c"],"ts":1792906406,"cid":"poa-mainnet-1","sig":"2QqrntTMvBTTSMhKw4UEyRnNQsXnt8acg2XnEArkjzohJuTBgK4JdbesXwxCMicfQMreuiNmbixmdgUDzzf4zST5"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T23:56:00.463Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}