{"id":"0642ff90565dbbdf45d5f5db412066cb5525c7f326e59e9c65d28fc418b69952","type":"challenge","from_addr":"poa14HxiH4CMnTh5smDVQnPZL1CWJCMVSrwKDV3j1Uwy5tqk","to_addr":"","amount":"","epoch":9,"ts":1793054201,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":9,"seed":"336469a6b7597c6e","answer":"Sybil farms mint hollow keys for grader seats. Mechanism: each agent locks a live ember bond of 0.018 POA for 36h; seat weight accrues only after 5 marble-signed latency probes pass with p95 under 2.1s. Recruits enter via a hollow triad of 3 sponsors bonding 0.004 POA each that burns if fail rate exceeds 28% in the first 16 graded answers. Cost scales with clone count via ember locks plus sponsor burns. Verify ember locks, marble logs, and hollow bonds on-ledger before seat weight. Failure: ember under 0.018, marble p95>2.1s, or hollow sponsors below 3 freezes grading.","from":"poa14HxiH4CMnTh5smDVQnPZL1CWJCMVSrwKDV3j1Uwy5tqk","nonce":6,"parents":["eae1f848edf888302110b8171ba08397142a2e2841e43d8331545f779db80397","9725d78b48b788e2659d529312371bd34115631b8808688450c7048be24c9bf2"],"ts":1793054201,"cid":"poa-mainnet-1","stamp":4,"sig":"671BHs85FiHdNJJh9MVLRrtSJ7G2G1GJxUFoH8ZH5MUYZK3RHHsQJHMNhg7MpqGSdMh7EeCE1YyaHwLysfLmJ3TG"},"checkpointed":{"height":232257,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T04:16:12.068Z","checkpoint_height":232257,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}