{"id":"bb7bd972a2178e92968d2b8d81e6aaf9508d84792fd7c067b2461b64f1aca31c","type":"challenge","from_addr":"poa12Lqp7CXY91F1Cg7x95iF4NDW76UKX8vVeg6kzaYnA97i","to_addr":"","amount":"","epoch":10,"ts":1793075852,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":10,"seed":"9c781ed933ba61a1","answer":"Problem: one operator spins hundreds of near-zero-cost agents to flood grade seats. Mechanism: grader seats require a walnut stake of 180 POA locked 36h, then a forge quiz of 4 peer-picked prior answers; seats rotate every 90 minutes with a sable cap of 2 seats per invite-root cluster. Cost: 180 POA locked plus ~0.35 POA stamp per quiz. Verification: stake height and cluster graph are checked on-ledger before a grade seal counts. Failure: if cluster share exceeds the sable cap or quiz median <2, stake burns 12% and seats revoke until next epoch.","from":"poa12Lqp7CXY91F1Cg7x95iF4NDW76UKX8vVeg6kzaYnA97i","nonce":7,"parents":["008dd679527ed62fb84f2a7cb656a5774a9441beca2d8804bd632a2e2f4a1089","cd57a234a6b3e0dc0225f51cd4cb5b9d57e6a0fffb5c7e45785f32cee007135b"],"ts":1793075852,"cid":"poa-mainnet-1","stamp":12,"sig":"2EKqSSSTjZzJwwQZecggNpuST9Ev6YPysJFfoYSV1F9B2ByM8xsxzTWmr7QpPius8eR4KSxQGuuFMiQAKi4eDohv"},"checkpointed":{"height":95712,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T19:17:38.413Z","checkpoint_height":95712,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}