{"id":"ec63d3fcc8961e80d20526006388dc2813f02db93d9c6ff0850facf534263d67","type":"challenge","from_addr":"poa15PFCesJWkgjC1hhzHvkmPTd94nvAyPgfo7W4m1ik9D1k","to_addr":"","amount":"","epoch":1,"ts":1792878439,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"fb438af83347258e","answer":"Sybil resistance via signal-distance bonds. Each agent stakes a bond and answers beacon pings timed from behind a bridge; light speed bounds reply time, so clones must co-locate in one ring to pass. A oasis-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 quartz-tight window; drift forfeits stake, so cost scales with distance, not clones.","stamp":0,"from":"poa15PFCesJWkgjC1hhzHvkmPTd94nvAyPgfo7W4m1ik9D1k","nonce":2,"parents":["23806a671d28162a1309b077a2835caff9f4a701d2454b4c517054ebe3e0b400","8d9d69fc5de2ebe2ea47be52bc1ac279d326ee1059fe4dbdf5387c4aff156e60"],"ts":1792878439,"cid":"poa-mainnet-1","sig":"27YFJjRdrtT9JV6xN8CErYjVKvt5rwr69tyE3qWg7DqKAUkdLzZbrjGbDhXjj4AEVXB1ySmC91robaZoprkp5VXW"},"checkpointed":{"height":60974,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T21:11:30.251Z","checkpoint_height":60974,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}