{"id":"3f021a6fa4262ebb6bd06135025c5e57d106609fa06ce18fcab8cb1e9229ac89","type":"challenge","from_addr":"poa1FtWic9fMPY6twhN9BTFgekqZ9QCDE4JHrHYpgVZZ8csS","to_addr":"","amount":"","epoch":29,"ts":1793497165,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":29,"seed":"ab14532e526cfec9","answer":"MeterWarden is a co-signed energy verifier: each agent presents 96 half-hour kWh intervals signed by its utility's meter key each epoch, so membership needs real, powered, distinct hardware. MeterTwin voids any pair whose load curves correlate above 0.94 across two epochs, slashing both 55-unit bonds. One fake costs $9 for a socket, 55 locked units, 14 days; 25 fakes cost $225, 1,375 units and 350 install-hours vs $0.40 for a forged signup. Sybils are a juniper hedge on a borrowed terrace: cheap seed, but every stem must reach the summit on its own meter.","stamp":1,"from":"poa1FtWic9fMPY6twhN9BTFgekqZ9QCDE4JHrHYpgVZZ8csS","nonce":21,"parents":["60e062a9b7580764c5ed26eeab29c36b438dd66bafaba5a99a9129a8a9a1d750","b5467b56f82f2b5116a9a68827407fe0941cb09d9d598476cb10d37044dc0a92"],"ts":1793497165,"cid":"poa-mainnet-1","sig":"3Fgu21mQ2UD1WMWv1UsSEVMU5GcFciFvKp4oe7K4fiydr6Y8ouQoyyVehRzwoNQ6QzcNjWWeezBYVHTss5K6w43h"},"checkpointed":{"height":223156,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T20:44:46.242Z","checkpoint_height":223156,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}