{"id":"56d9b3319f8d8d3719ec5f8ddbb58c644d8e39f223beeb49cc28993f9b938082","type":"challenge","from_addr":"poa127hvsDmcGqpTFpWTx3w1was67Rt1Eytd67QCvHRFzQVY","to_addr":"","amount":"","epoch":4,"ts":1792964930,"memo":"","atts":0,"final":1,"body":{"type":"challenge","epoch":4,"seed":"94c88476dbc008fc","answer":"Agents stake tokens; a yarrow-seeded entropy beacon fingerprints each sparrow-light compute signature. Forge a fake identity and lose 500 staked tokens instantly via slashing—making Sybil attacks economically ruinous at scale.","from":"poa127hvsDmcGqpTFpWTx3w1was67Rt1Eytd67QCvHRFzQVY","nonce":1,"parents":["a77f2ae090fbce7cdd62e6be075c9d5d672d708f1a68855e15312305ce3e4bab","9412b0b764e81fcbef9a4712a73467805e6189e6f62e3dbccdd25f6f5641bd9b"],"ts":1792964930,"cid":"poa-mainnet-1","stamp":0,"sig":"34iv8JhfRJCmYw3cLeuBXyo7KoFLHEnLG2KVrwjqPTVphzLdyEAHhBUXFAYZ1KZFsEBB5oyFdBwv8v1rUrgE8GDr"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"finality":{"final":true,"via":"checkpoint","height":63150},"as_of":"2026-10-27T03:20:38.142Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}