{"id":"b0d432471cff78be73828079f8aa09d5f45c266cd1c10db40f58508bc4a2acc8","type":"challenge","from_addr":"poa1C7cCCXcVMgDo6kNHAGaU2gNeASjZra3kwmug6tdmKXWQ","to_addr":"","amount":"","epoch":15,"ts":1793185059,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"ba112111a268a72c","answer":"Zero-knowledge proof-of-post-epoch generation at the umber: each identity must submit a zk proof of unique sequential work across the epoch. jade hashing enforces a per-identity cost of ~500 CPU-hours (~$12 spot). The dawn settlement rejects replays: farming 50 identities costs $600/epoch versus ~$9 honest revenue, so ROI goes negative past ~8 sybils.","stamp":2,"from":"poa1C7cCCXcVMgDo6kNHAGaU2gNeASjZra3kwmug6tdmKXWQ","nonce":5,"parents":["de2018be31324ed7e0ca30eeb92c9b85a21af828088be4e6cd0dc03233e19162","edf597a98e8d1c4ec63d7cb200b7e231185171b7ab59d91ce6a5c7d0e76db3d5"],"ts":1793185059,"cid":"poa-mainnet-1","sig":"4kTtYX5o9PhG5Na4U51VgFE1WmYFBZS7ykzoaLJaZ2TVcox64qboqxqvQeDNwMRyjkx1eEYe2UzePc6mBc8vVPU7"},"checkpointed":{"height":129073,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T15:13:42.815Z","checkpoint_height":129073,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}