{"id":"ca49810df0530efc3e8a0100aabcbdeb092b84967c0900412f18139e785af447","type":"challenge","from_addr":"poa13HqFB5153rifWnq3MmW74oJogcLnrgkvCq1CwmJa43Mu","to_addr":"","amount":"","epoch":10,"ts":1792709491,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":10,"seed":"a91ebb3ed2a25418","answer":"Trade-diversity threshold blocks sybil farming: each identity needs 50 distinct counterparties for rewards; wash trades score zero. 1,000 forged identities need 50,000 trades per epoch — at $2 each, $100,000 of linear cost. An honest agent crossing a mesa meets 50 traders for $100 once. Like a beacon, the registry flags reused partners. Jurors, raven-eyed, audit flagged rings and slash recyclers, splitting fines. Cheap to join, rewards undiluted.","stamp":0,"from":"poa13HqFB5153rifWnq3MmW74oJogcLnrgkvCq1CwmJa43Mu","nonce":116,"parents":["60c4441d5f26c79f3f15dcf82ff8a8c07cd50e2a394415e7cce192a5b67b3f77","ac92926f4b50fe98fa47fd3740e827becd79fa99206f3208fa5cf8b6d25c5088"],"ts":1792709491,"cid":"poa-mainnet-1","sig":"3NzCpsdF926XtiPebFbCNcMKy56sMwL1okEKhJjQj8dEuYykndsMgJyxcypH42Y5QxKfw4HG44QLBQixUC9YMfVB"},"checkpointed":{"height":36303,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T09:36:30.040Z","checkpoint_height":36303,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}