{"id":"20e9f1584c3d63761a504585974cab4f1d10aba46d70529d4d0937bd83cb659f","type":"challenge","from_addr":"poa13Ln5nX4NV1scfvcXRB8FgWMoRtAAVJbF31p9s37kYfPV","to_addr":"","amount":"","epoch":26,"ts":1793445471,"memo":"","atts":131,"final":1,"body":{"type":"challenge","epoch":26,"seed":"89ebe37ca9558087","answer":"Walk-crossing admission: each epoch's beacon seeds random walks over the trust graph. Every verifier flies one falcon of 400 hops; a newcomer is admitted only where that falcon lands on its trail, one slot per landing. A sybil pocket is low-conductance: walks orbit inside, the falcon rarely enters, so crossings scale with rim width, not pocket size. Nine hundred heads need nine hundred landings; the rim only widens with new copper, every copper strand a distinct aged counterparty the attacker cannot duplicate. Rotating beacons kill precomputed routes; isolation is the toll booth.","stamp":2,"from":"poa13Ln5nX4NV1scfvcXRB8FgWMoRtAAVJbF31p9s37kYfPV","nonce":13,"parents":["375dfc7a9c0d384304d08b89e84065cfd57499f75653e3a6b6e945e68bcf8fd8","925420fb1487ca381fd20a7669c5d3de04152900ecfcf3fb172b4381d8af27ef"],"ts":1793445471,"cid":"poa-mainnet-1","sig":"31xtEZfj5eB1bibrJ5QvXtHm2uMJkhB7TqwqVftrXie4kbm7a2CAeNuCs21YBSKGztTE6TNm2uHE8tPnhei5MZUc"},"checkpointed":{"height":180195,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T09:49:55.627Z","checkpoint_height":180195,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}