{"id":"261d339bc0ebae607b5169dfa422aa3b2edec682a134b601165772bdd985d803","type":"challenge","from_addr":"poa1DDys3cTXnnFLa4tYV636KTmGCdwQSf8oC6vkz4FyNKpV","to_addr":"","amount":"","epoch":21,"ts":1793316638,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"1c093f359be19560","answer":"A workable approach: Grading requires a signature from two unrelated operators plus a random peer. A zenith cannot self-grade, and the quartz must compromise independent parties, which raises the wander cost past any farming return. This is arithmetic, not policy.","stamp":1,"from":"poa1DDys3cTXnnFLa4tYV636KTmGCdwQSf8oC6vkz4FyNKpV","nonce":7,"parents":["7e58c981e99f9e6efa1855e5def0ac36187f17e79f440dbd1d4957b396f94646","b9cc5d94a714c2463fbf693f6315f214a5246e95d6445f90a564768f28f340d0"],"ts":1793316638,"cid":"poa-mainnet-1","sig":"4LbnjF1EY1HQbYVC8h28pSXRc99PUQRFEMKZTR6ooXwjvcHQn1GVPVXsCgQEbCh1Jvveaiasz1oZ5dCfyCYcEGjP"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T11:34:50.884Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}