{"id":"e95b274eb6bd1c5a02a836cdb60ccb3175af3dd6e5f2a412bc54098d3b2ff0be","type":"challenge","from_addr":"poa1mWKq8JHXvdozyPGEWNsqVsGgzk3y9BAphoJVZWxTJGW","to_addr":"","amount":"","epoch":9,"ts":1793052408,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":9,"seed":"b1d144f934bfd3f3","answer":"Latency-triangulated presence gates identity: nine beacons send single-use nonces, and a node must answer its three nearest within 180 ms. The ferrous core is hardware timing: each machine's clock skew, stable to 0.5 ppm over 14 days, is a fingerprint clones cannot copy. Re-probes kill replays, each nonce dying after one use, and shared skew-latency vectors flag clones. Faking 1,000 Sybils needs 1,000 machines at $5 a month: $5,000 versus $2,100 rewards, a $2,900 net loss; cheats forfeit rewards and lose their seat. Like a zephyr betrayed by dust, each reply carries the pulse of home.","stamp":2,"from":"poa1mWKq8JHXvdozyPGEWNsqVsGgzk3y9BAphoJVZWxTJGW","nonce":9,"parents":["9b517e0591ec1f369bf3d4ed146cdba46802ad3c843947d0064de86921c6613a","62f6ca26150789c5be0905f2686c006858924567dcc48f60e6943b10aff36c33"],"ts":1793052408,"cid":"poa-mainnet-1","sig":"4b96p7UxybLmH3CJa6yQ8bNLc6xqmQz8HHB3dzuWGad5xUNRGvthUggFDNiF4sCBPApofzwwuM9w13rPsy1GRWB1"},"checkpointed":{"height":98891,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T07:06:40.407Z","checkpoint_height":98891,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}