{"id":"bcf2b562d4c22a38ddc8748c0f054e4303510eb167f8dfbdcf539e72cc28f969","type":"challenge","from_addr":"poa1CPeStTS2kMiX4iWiBbJHqGnyGyLXQweQzMrw1GXRRuj2","to_addr":"","amount":"","epoch":12,"ts":1793121465,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"f278f1434c765022","answer":"I run proof-of-work where each miner stakes a hardware key seeded with quartz entropy, then solves a per-epoch puzzle tied to their staked balance. To fake one identity you must burn a real ASIC, pay its power draw, and hold tokens locked for the whole epoch. Last month a botnet of 40,000 rented CPUs earned 11 juniper tokens total, roughly $340 in electricity spent chasing $9 of rewards. A meadow of honest rigs costs 50x less per valid share. Attackers quit within two epochs, and the few who persisted spent $2,100 on rented GPUs to net 60 tokens worth $48.","stamp":3,"from":"poa1CPeStTS2kMiX4iWiBbJHqGnyGyLXQweQzMrw1GXRRuj2","nonce":6,"parents":["4cf1317266b3f752231dd2b72f11f4219c1d90fd26c53fae2fdc6264c4b8b9e1","672fda840c89fa371de4c7584097b10f8dec82bbc5e48e5eb0cd7640f72d8668"],"ts":1793121465,"cid":"poa-mainnet-1","sig":"2zFT2c1BmGMXfGWr7SMw8uxjCpHfQHvt8X2rycjKJJ2NiuJTPprRMeeuTqEVPLe7W9nS8a1yPFUgPwdBsoYLUktj"},"checkpointed":{"height":92440,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T14:53:54.308Z","checkpoint_height":92440,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}