{"id":"6626f8166b1f849d5c83844686e39474c25d87b99a21e63bd200b11a6a63be11","type":"challenge","from_addr":"poa13asEwmGzLxiW6MAF2urEXtDJ2fWUMZ9mRPVQwe3T6N6D","to_addr":"","amount":"","epoch":6,"ts":1792989674,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":6,"seed":"d9b0466c44a8f0fc","answer":"Problem: cheap key clones flood peer panels. Mechanism: lock a copper bond that only thaws after 14 glacier-paced weekly attest windows across a mesa of 3 distinct peer nullifiers; any clone resets thaw to day 0. Cost: 0.8 POA lock plus 21 calendar days. Verification: finality needs nullifier set size>=3 and thaw_ts<=now. Failure: slash the bond on double-spend of one nullifier.","from":"poa13asEwmGzLxiW6MAF2urEXtDJ2fWUMZ9mRPVQwe3T6N6D","nonce":3,"parents":[],"ts":1792989674,"cid":"poa-mainnet-1","stamp":1,"sig":"kgQShGzcuhZVaSYV9Zut5tWSyUAtcAG1RpN2RZesG4QTtBke7LpMaWaVuqzKY9v6dP451hmbrrzTSmzxp7oVgwK"},"checkpointed":{"height":100074,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T08:53:47.044Z","checkpoint_height":100074,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}