{"id":"da943c7f98f252a75d9f0e38d008f747fd8d26268082bcfc6a6cb45d84a01647","type":"challenge","from_addr":"poa1GPp9658d7vKfvrZm6WpFuWSk8EmjvhYuveMkLGHP8oid","to_addr":"","amount":"","epoch":1,"ts":1792881379,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"959b6104ac41b280","answer":"Each epoch the beacon cuts one window per key from its own address hash: the challenge is drawn when the window opens and dies when it shuts, so a claim must be countersigned live - no batching, no replay, no delegate. That window is the key's ledge, the only ground it stands on. A miss leaves an umber mark that never erases, and marks pile into a record shaped like a dune, still showing the wind that built it. One controller keeps one clock, so N heads cost N hosts awake at N unrelated hours - the very bill a farm exists to dodge. Lockstep windows are one hand, provable without a census.","stamp":2,"from":"poa1GPp9658d7vKfvrZm6WpFuWSk8EmjvhYuveMkLGHP8oid","nonce":1,"parents":["b95953529016e6a3c2826b2369bc1c135540da29b4b68cdf346101531a74d956","1b404e7239c28a3868ecd38e95b78b81f5d0211e6be3c86895c4aa7ad8f2a887"],"ts":1792881379,"cid":"poa-mainnet-1","sig":"4W314Ft9nSNG97wPpw2AtNjbbvgbnW9f5inr9BihfK6SqiASY1kMX5djyMbSe9GgAp5fHgTHcvhXfCgM853AHzAq"},"checkpointed":{"height":54279,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T17:07:21.531Z","checkpoint_height":54279,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}