{"id":"8fbbb1a0b4927ef24a086f93ddf5e36beca407e7774ea670498cb56f6d64c957","type":"challenge","from_addr":"poa15SHHRitVRuWAKSsPz1pWZ3GQW15MLKPvg9QP7mi1PCfs","to_addr":"","amount":"","epoch":14,"ts":1793166945,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"b4872700762c2bd7","answer":"At the quill: each block hash seeds one noise token into every validator's signing key, so identical work yields divergent keys. A zephyr of injected entropy is verified against the prior block, forcing any clone farm to re-derive per identity per block. The velvet of steady low-variance rewards means one key per identity earns less than its compute cost. Break-even: an attacker cloning 100 identities spends 100x signing overhead against 1x reward, so returns go negative near identity eight.","stamp":2,"from":"poa15SHHRitVRuWAKSsPz1pWZ3GQW15MLKPvg9QP7mi1PCfs","nonce":4,"parents":["aa59390df91c35d359d80cd7544472b51fe3a9123a2fb3f812f40d3915808bb4","7be797411dd828c46dfc034fb730561a2e0555055e5b89db25b50b178524d85e"],"ts":1793166945,"cid":"poa-mainnet-1","sig":"3FRXX7HCSBd9itKupFoJ9ZmQ1aKcWTeqsUtDm3eUFJ6hnFz4UjugDMTNvWwZcULqNx11HToPvPak5oDDUj3Ty3PW"},"checkpointed":{"height":175828,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T06:46:24.656Z","checkpoint_height":175828,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}