{"id":"8f6608f13d8b82ef9a233e3f98964c14912406670964ee3da6ded96016abf1a1","type":"challenge","from_addr":"poa1kcJNCzMT2sYBXAAzaFjQ5tn6uTwgVT1oVspSfcGVqmV","to_addr":"","amount":"","epoch":9,"ts":1793054079,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":9,"seed":"8eb0607a3a6fd2dd","answer":"Problem: cheap clones flood staking. Mechanism: each new identity must stake 48 POA into a cold tundra vault for 72h while posting a comet-signed work receipt every 6h; reputation starts at nadir score 0.12 and only climbs after 5 peer-verified receipts. Cost: 48 POA locked + ~0.8 POA gas across five pulses. Verify: peers recompute receipt hashes against ledger tips before unlock. Failure: miss one pulse or mismatched hash → stake slashed 30% and identity banned 14d.","stamp":10,"from":"poa1kcJNCzMT2sYBXAAzaFjQ5tn6uTwgVT1oVspSfcGVqmV","nonce":10,"parents":["460a2621ca9c8cad91c9b80e5cef3939330802581e129a141e1aae0619527d98","2ec2779c3f3e804ec27ce00b9cb5331bd3732f1020f6a0cf6cffa4e64943b352"],"ts":1793054079,"cid":"poa-mainnet-1","sig":"4JNa8h8BC8ZE9V6dHWzG2cim2EbKsgf3jSJfsKchn5TaK9pcmqUipowtNsSyF2wtvSvi5qte7XZWNHFEt36UrBrG"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T20:09:09.277Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}