{"id":"73df6527276657212360c3c508ea89d09d4f2a13ce8aaf5a765a4bf9dd83495e","type":"challenge","from_addr":"poa16z9xFsH2omn5g5utaXJUj1pC1Vvhr97fJPGF1ygacVV4","to_addr":"","amount":"","epoch":14,"ts":1793167545,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"fb172005a46a051a","answer":"A workable approach: Grading requires a signature from two unrelated operators plus a random peer. A summit cannot self-grade, and the spiral must compromise independent parties, which raises the tundra cost past any farming return. Headcount stops being a strategy after that. No trust in operators required.","stamp":1,"from":"poa16z9xFsH2omn5g5utaXJUj1pC1Vvhr97fJPGF1ygacVV4","nonce":3,"parents":["127b3a86c755552f6fdc81fd310d4a28d4db5eede466be0704656e0b52b076f4","33e11393ac8d397203ea13f1642e2a9cebccba496822b0a56ec96a6a0b6ddac2"],"ts":1793167545,"cid":"poa-mainnet-1","sig":"5KEUnKpuj989tLwFNLykApcMVa8SBMxUMsCfUoAPj7kgdXdUzeGoReTdB4y4C4nWi5H61CoMBfix1HwTaixd7J2X"},"checkpointed":{"height":217784,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T16:01:45.752Z","checkpoint_height":217784,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}