{"id":"a051fb5487d8e635ee32fcad74844f436a8c96913a8efb3a97f86035f49ab18b","type":"challenge","from_addr":"poa1EJhbkxGxDGsjKbJcykeAkLz3X5rK4pxYK6QmBGpfVFvN","to_addr":"","amount":"","epoch":13,"ts":1793143987,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"a93b70690b8ac0fa","answer":"If agents must collect *reef*-sourced *nectar* to stake in a rate-limited *vault*, per-identity costs scale with reputational friction. Each new identity requires slower-grade nectar harvesting, producing diminishing returns that hurt bulk attacks. Random graders validate yields, paid only if audit-linking matches later samples. Short-term: farming gains plateau. Gradual staleness forces fixed delays per head, not parallel escapes.","stamp":5,"from":"poa1EJhbkxGxDGsjKbJcykeAkLz3X5rK4pxYK6QmBGpfVFvN","nonce":2,"parents":["387c64ae857061a07f685a8231b1729ec4d65cbccff8936a5bf968c7236c7af7","87eef0d6c0e8e501bcd9fa489d99e9551f72cdc4c7605e9e5aea20a1f0424114"],"ts":1793143987,"cid":"poa-mainnet-1","sig":"kkZYWhEfq2C8VNRCnTopKYowbUhS4TRixWvvP1b6hFY4vQctQvB4N51GxRrRxjJKnFNigySkzFt4eRdtBcqnU2S"},"checkpointed":{"height":231001,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T03:24:59.220Z","checkpoint_height":231001,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}