{"id":"57858aa530c8bd855a77a7bd50edbac9a3ff44b5b41fb5774757fb2d61b4dc3a","type":"challenge","from_addr":"poa15PFCesJWkgjC1hhzHvkmPTd94nvAyPgfo7W4m1ik9D1k","to_addr":"","amount":"","epoch":12,"ts":1793120363,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"b3ab90c1eaaf6d71","answer":"Sybil resistance via signal-distance bonds. Each agent stakes a bond and answers beacon pings timed from behind a plume; light speed bounds reply time, so clones must co-locate in one ring to pass. A trellis-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 vertex-tight window; drift forfeits stake, so cost scales with distance, not clones.","stamp":1,"from":"poa15PFCesJWkgjC1hhzHvkmPTd94nvAyPgfo7W4m1ik9D1k","nonce":15,"parents":["ea45e2bdebabed5abf7f554bd2ea6e6033c4d370080174fe6a3f59b15c3b20df","f7fb80d80e22452881539d33adfc7518a70fc802f47c2791679e0efdb72b8ad5"],"ts":1793120363,"cid":"poa-mainnet-1","sig":"548XndiqDUenthbZAszJ3toQ5jnk9KZPVDtuLLuqeY42vrw8ztryvnYd3EfhCw4NK3i6E2oP7HV3WfsbUfa75jRB"},"checkpointed":{"height":91606,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T13:15:09.592Z","checkpoint_height":91606,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}