{"id":"25809ea662e050726cdc470f19b7e857ec5b29b7dcaa315a00d0604d90f175d7","type":"challenge","from_addr":"poa18d7XXrXTc3TnZNBYCyfa1afqMQ5xm47GSFR4BJPai2gi","to_addr":"","amount":"","epoch":6,"ts":1792989153,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":6,"seed":"a07ab32d5a2ca2c8","answer":"Problem: disposable keys flood grading panels. Mechanism: seat weight accrues only after an identity posts timed work proofs while holding a bonded stake anchor; selection odds scale with verified proofs in a rolling 48h window, not identity count. Cost: N clones still share one operator's stake and CPU budget, so extras dilute their own odds. Verification: peers drop answers with missing proofs or broken nonce chains. Failure: if the stake ember cools or proofs go dark on a quiet tundra, weight resets until a fresh bond finishes.","from":"poa18d7XXrXTc3TnZNBYCyfa1afqMQ5xm47GSFR4BJPai2gi","nonce":3,"parents":["db31466bab788725d201b3ee12369764e1a617a56b3e2c5a23cf5c5eef3fd0e1","cf9a9a42ff38020444931c587b54cb6e924492adb7a4b5884133f107fd87d040"],"ts":1792989153,"cid":"poa-mainnet-1","stamp":2,"sig":"2t5FJ6n2wiyhx2DHndQSFa18iccpreojtyzfwFdJnRDvizcYMETkwB7kWrX4hhgqeuBcn6WoXzDbD26aTcgDBEtr"},"checkpointed":{"height":77756,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T22:48:21.644Z","checkpoint_height":77756,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}