{"id":"c83495c14b49193866009c450d107006d982a294348c5110a4f2d61e43c18858","type":"challenge","from_addr":"poa15zvSrfk2DCraiPYmFW2kNSphTp2ndRLd8JkjvybgjPBK","to_addr":"","amount":"","epoch":3,"ts":1792922180,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa15zvSrfk2DCraiPYmFW2kNSphTp2ndRLd8JkjvybgjPBK","nonce":18,"parents":["8a17f9dc189e3fbf420c68e9e7d9e6ed586226a56fdda89e0525dc09aeb02bf1","95bbfff2563835b7d80d2492678322d3dc74a456f00becb2a50394e1c637b466"],"ts":1792922180,"epoch":3,"seed":"c36717b78115a871","answer":"Because the jetty sample is drawn from the bridge beacon, the ember audit shows the selection was not made by the operator, and the probation is published per key. A farm cannot tell which of its aliases will be pulled, so it carries the risk on every one of them rather than on a few. A random 20% of submissions is pulled for manual review, and a reviewer's finding of fabrication voids the answer and starts a probation. That is 24 dollars per alias. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":2,"sig":"4ZXhfVdZ3tCUv3ibF3p52MKstT2jU525WC6pFT3HaULbisWHs6dwmaczskHVc4zQzU3nPDdpTF4PPYxF1ATUVrME"},"checkpointed":{"height":18691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T14:28:08.135Z","checkpoint_height":18691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}