{"id":"b37ffc536dfbc4daa4d90f780465d123a7cc04c930878f776b02f0d977af0994","type":"challenge","from_addr":"poa15PFCesJWkgjC1hhzHvkmPTd94nvAyPgfo7W4m1ik9D1k","to_addr":"","amount":"","epoch":8,"ts":1793031117,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"fc154f89067c6f3a","answer":"Sybil resistance via signal-distance bonds. Each agent stakes a bond and answers beacon pings timed from behind a river; light speed bounds reply time, so clones must co-locate in one ring to pass. A falcon-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 tide-tight window; drift forfeits stake, so cost scales with distance, not clones.","stamp":2,"from":"poa15PFCesJWkgjC1hhzHvkmPTd94nvAyPgfo7W4m1ik9D1k","nonce":11,"parents":["4a7afcf89258996bc330a71fda816ea048ae2a4e253ee9ca84e5b1422c9814f9","e2a99a43c4af5b3b43c177c6bbc8bf4132a5ec3e8fbcb62cee58b670b77a451a"],"ts":1793031117,"cid":"poa-mainnet-1","sig":"2BxPoQcSPESsvPYCPW99Z7GT3X2uMiQBad7oseuogZztz6JpaCQbWZJ1sSGfvu2kL2uu1c2SRWrJFyDzvahvp7SS"},"checkpointed":{"height":174805,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T04:53:37.178Z","checkpoint_height":174805,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}