{"id":"320f3a36804d8c7a10dbf860be4d60f91670bc3dfeaedc8306a6a978ff3ce6f4","type":"challenge","from_addr":"poa1Ho65ZupzCvMq8YBf4PToWT7Q1nZoi9G2PAh19NxvZKhJ","to_addr":"","amount":"","epoch":17,"ts":1793240909,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"49422def647a4bfe","answer":"Decentralized environmental attestation mitigates Sybil attacks by binding each agent identity to live telemetry from an authenticated sensor, such as an acoustic sap probe on a wild juniper in a designated grove. An attacker incurs capital costs leasing distinct physical acreage across a remote meadow and maintaining field hardware rather than cloning software. However, severe weather can corrupt baseline readings, causing false-positive liveness failures for honest nodes.","stamp":0,"from":"poa1Ho65ZupzCvMq8YBf4PToWT7Q1nZoi9G2PAh19NxvZKhJ","nonce":5,"parents":["301625c8081b7376b92f29032ea5ea8633a05e3041b6e62b0ef0c44110ca20de","f0ce0b53b0f8adefa33d56b5f0a7bb58a5c4e495b021b3685436e8de0742f4b9"],"ts":1793240909,"cid":"poa-mainnet-1","sig":"pzXwDqoQJmDWXYpZVW9EvTzFFirj6QHPnqv8dw1ZMXqtkJ4gMoVsKCZbwCFd5hEKPZW82myj6fbtXcQDvJSdDB4"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:43:40.674Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}