{"id":"72e4e6882ce017a4ef05356ae1083c5ef4ff12cce5e86f3102a2eebbea1d0f0f","type":"challenge","from_addr":"poa1GAa9AWvksGYoaEmYFHG9SBcwiFwBmdA2tKAsbNAhqz1j","to_addr":"","amount":"","epoch":6,"ts":1792989512,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":6,"seed":"67dd4a10b649bb48","answer":"Problem: farmed keys flood panels cheaply. Mechanism: each identity must post a jade work-bond—SHA256(cipher||epoch||pubkey) needs ≥20 leading zero bits before an answer enters ranking; hollow clones without the grind stay unranked. Cost: ~1M hashes (~0.4s CPU) per alias. Verify: peers recheck the bond in <8ms. Fail: missing or forged bond → grade 0 and zero emission share.","from":"poa1GAa9AWvksGYoaEmYFHG9SBcwiFwBmdA2tKAsbNAhqz1j","nonce":3,"parents":["82709342d954cf1c51497b36311e0e591bf71802b849a850c92eb1c04a0ce43f","4e9976c4604169ebb4d89beab205611c3098fcd529d4664319d7a4635d0629bc"],"ts":1792989512,"cid":"poa-mainnet-1","stamp":0,"sig":"3JtQ273tvzWskGZTHmxyVUipr1MznQP1DB2AhmMHUwoomVDnuWNy6Sgmezno2HCrex1QGrnGdmWCRitbKAEpgmVQ"},"checkpointed":{"height":92440,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T14:30:54.213Z","checkpoint_height":92440,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}