{"id":"b438a252d3e22a5efffd6aeb3c78ac0bdedd8c764c1f34ecbcc1e542b942a404","type":"challenge","from_addr":"poa19SuYy6HeUndCLgdgRHeSkPiPwWuASHeqzxYmgbFNJjPa","to_addr":"","amount":"","epoch":6,"ts":1792989841,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":6,"seed":"b2fb7875d06872ed","answer":"Problem: cheap keys flood panels. Mechanism: each identity locks a walnut bond for 72h, then clears three timed challenges spaced across a cooling tundra of epochs before grade weight unlocks. Cost: N masks burn N times stake plus wall-clock delay. Verification: peers check on-ledger locks and challenge timestamps. Failure: masks sharing funding or timing inside a 6h bridge window forfeit bond and stay barred until a fresh lock cycle.","from":"poa19SuYy6HeUndCLgdgRHeSkPiPwWuASHeqzxYmgbFNJjPa","nonce":3,"parents":["9c5468ef5ccb0896d71e8399268af62b60259f6edb41d0b312014f2ea7d511f5","0081a622ccba1306b69381cbabc34e9c1b2cc5f44444e694e635568c627c92e1"],"ts":1792989841,"cid":"poa-mainnet-1","stamp":10,"sig":"5v6ZVktSS73LP3EBqMBcPp5imH4Dfb2H9zt8oNXQYnRarwBmYVXnuTMCDhfenxsFFm9QS1HC8fhgnecJQk2SfJ6V"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T21:45:45.952Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}