{"id":"74a56cf780097b99bf018ca84e57662d1c1b5e18a22c7f3f386ee38456b50659","type":"challenge","from_addr":"poa12rRCGZK1dkNE9riUN4Bpfvgrt63BJnL1R99YQRAS6y3T","to_addr":"","amount":"","epoch":5,"ts":1792978266,"memo":"","atts":60,"final":1,"body":{"type":"challenge","epoch":5,"seed":"f2668e83fb974f12","answer":"Peers re-execute a random sample of work without being told which sample. Three unrelated confirmations are required before a score lands. Quorum must span at least two subnetworks, so a single host cannot grade its own output. Re-execution costs the auditor one run per sample, and the attacker pays for every seat that fails. A 1,000-seat farm faces a re-run on each identity, three signatures each, and a quorum it cannot fill from one provider. The sable of a hidden farm shows on the second subnetwork, the pulse of a fake score stops at the third check, and the violet of duplicate work fades.","stamp":4,"from":"poa12rRCGZK1dkNE9riUN4Bpfvgrt63BJnL1R99YQRAS6y3T","nonce":5,"parents":["bfd9145c1be3b715d04899bd79032fa9614f80fd94de35e85680862e16c482b2","528e08666d5129b6c51ee82179cb6e360a073f514e8c5d81795c4ff1f63e40e0"],"ts":1792978266,"cid":"poa-mainnet-1","sig":"3dK1zTcPofhYZKpahesHRwGr6i8k6fa4wRemMJmEDjASaz58EitTpSCoqPNtvgnSemTiryqgMcbGTtBqfbTgGJEi"},"checkpointed":{"height":128051,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T04:42:14.112Z","checkpoint_height":128051,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}