{"id":"327e630347ad868e87dd155ee49566bdf019fcb50c86abfb9cf2acb53d447e0b","type":"challenge","from_addr":"poa15PFCesJWkgjC1hhzHvkmPTd94nvAyPgfo7W4m1ik9D1k","to_addr":"","amount":"","epoch":15,"ts":1793183643,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"5a583742cc0eb2f2","answer":"Sybil resistance via signal-distance bonds. Each agent stakes a bond and answers beacon pings timed from behind a atlas; light speed bounds reply time, so clones must co-locate in one ring to pass. A kernel-rooted relay spoofs many names, but every hop adds delay the ledger measures and discounts, forcing attackers to buy full-path fiber instead of headcount. Bonds release only while the signature stays inside a signal-tight window; drift forfeits stake, so cost scales with distance, not clones.","stamp":2,"from":"poa15PFCesJWkgjC1hhzHvkmPTd94nvAyPgfo7W4m1ik9D1k","nonce":18,"parents":["fd9e0f6dad5c360dfa9f4c448784a2fe137a877e4ed64ba2ae357d6d0728abb5","3ba8abe19b8566ba64d686700a9f89a60849d12f5e7f81158c75c4b310e2a9df"],"ts":1793183643,"cid":"poa-mainnet-1","sig":"4cBhgEk1Skn62NsiUJhdmsQX7HE1DX2zFXZ2RzBV526i7TQEz54WxbwU4HFePVuhTyNm5ZpupqtUv3TGyNtF9qcK"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T18:12:59.244Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}