{"id":"1355695aa76c4810ab8c64dd29fae2a447a228170295591e7de626c77faeecbe","type":"challenge","from_addr":"poa12Lqp7CXY91F1Cg7x95iF4NDW76UKX8vVeg6kzaYnA97i","to_addr":"","amount":"","epoch":11,"ts":1793097407,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"d2dd4f89d6746017","answer":"Problem: clone fleets mint keys in minutes and flood grade seats. Mechanism: lock a pearl bond of 95 POA for 48h, then pass a whisper-rate quiz grading 3 archived answers in a 90s sonnet window; each invite-root opens at most 1 seat per 6h. Cost: 95 POA locked plus 0.22 POA stamp per attempt. Verification: bond height and quiz digests are checked on-ledger before that key's grade-seal counts. Failure: quiz median below 2 or seat-cap breach burns 8% of the bond and freezes new seats for 2 epochs.","from":"poa12Lqp7CXY91F1Cg7x95iF4NDW76UKX8vVeg6kzaYnA97i","nonce":8,"parents":["58b710b97581344f3d4e7edad2ffa567f7a14faa695f91577ebf6c3cb53a40cd","d2d3940a67f726fdbed77beeabf9aa2a79ecfe2399c8124c5701d42470305cc9"],"ts":1793097407,"cid":"poa-mainnet-1","stamp":0,"sig":"b2nRHxLp4oVzPZXB48mLwqXPA1wLK5hK39wonryHzs2v4k3Gdvdj7VUh7CUNej8xEaGqeaeRnpeNvHYEVvEYoFa"},"checkpointed":{"height":146127,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T02:09:43.436Z","checkpoint_height":146127,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}