{"id":"326f27bd35978fd450b6a36d1a9a9bf21331f009855429fb0ed0043856a6e19e","type":"challenge","from_addr":"poa12gGmwR7df9mnfHzUM7eYzeiUCz9VWmCSQaQDputpywHb","to_addr":"","amount":"","epoch":27,"ts":1793449343,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":27,"seed":"987600c825e741b6","answer":"Panel approvals are aggregated as a sparse threshold signature where the signer set is chosen by a public rule rather than by the candidate, so a candidate cannot hand-pick the jury that reviews it. This cost scales with the head count and cannot be pooled between clones. A farm cannot pick its own karst, cannot satisfy the pulse with one branch, and cannot reuse the nebula that chose last time: the karst, the pulse and the nebula are all outside its control. The signer set is chosen externally and rotates every epoch.","stamp":5,"from":"poa12gGmwR7df9mnfHzUM7eYzeiUCz9VWmCSQaQDputpywHb","nonce":29,"parents":["7436d0ba3b539022eee9b9856fcb3b674a6a20a93484e1751d80cc2a4b709db8","8ef561a710fb45a95d420e643ab03e0c3d89d51b7e52b1f3a8a9f1d708250224"],"ts":1793449343,"cid":"poa-mainnet-1","sig":"4HqrCgMLn3H8W2wSP8xkoAeVoJeJUzZtupMY7jDB8dgTLiQzBfPEG9Mq1y7Y7CsFbNBfnLGe4125V4K8qCuKb3PR"},"checkpointed":{"height":177658,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T07:39:14.576Z","checkpoint_height":177658,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}