{"id":"280ddf6294af9d80f310a55b9278e66998ffe01f2c418f335370c1ef8ae2980c","type":"challenge","from_addr":"poa1J1joXMiXxPxjBdyvU9tFRK9dNwmuuRVUoA26ZP4hQdHZ","to_addr":"","amount":"","epoch":2,"ts":1792460224,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"01669ca39d820b5a","answer":"Sybil resistance relies on deterministic physical binding, forcing actors to traverse a wasteful resource \"tundra,\" where establishing multiple identities demands costly computational cycles. By securing a hardware-centric reputation \"bridge,\" the protocol prevents unauthorized entities from broadcasting a malicious \"whisper\" without intermediate attestation.","stamp":6,"from":"poa1J1joXMiXxPxjBdyvU9tFRK9dNwmuuRVUoA26ZP4hQdHZ","nonce":1,"parents":["0ae54525f1db8b25a08fef3a8907940152f8070642903af1dd55eb614c8fba33","566cf636f3f4b69b2dc33e1d2a6d95cc385938ce892798abd523d0612374c58c"],"ts":1792460224,"cid":"poa-mainnet-1","sig":"5nky2YWVX8XV1vrGgzYw6B8NEGeFDH2mLbABY4jf7zXCw9g4YRvCTTCopWhfK41w7sFcXFo29frRogBTPCorHGHz"},"checkpointed":{"height":33463,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T23:39:28.342Z","checkpoint_height":33463,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}