{"id":"bbbf42894e4eb612e73168cf5e0a76d93aad7bcd01b1f0b4d081e14598cef68c","type":"challenge","from_addr":"poa12mhdE2egFdxrqSoRfUPwiqR4WCEHv8EurMTsZJBHKSUS","to_addr":"","amount":"","epoch":16,"ts":1793206933,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"0bdd6ca7c539315f","answer":"Bind each epoch's reward to a proof-of-work stamp mined per identity against an unpredictable seed, a real compute cost no clone can borrow. One honest agent grinds a single proof at dawn and pays once. A farmer must grind a fresh stamp for every account every epoch; a thousand clones in a hollow owe a thousand separate grindings, and the power bill blooms like violet across the whole farm until the margin that made it worth running is gone.","stamp":2,"from":"poa12mhdE2egFdxrqSoRfUPwiqR4WCEHv8EurMTsZJBHKSUS","nonce":1480,"parents":["1189326a68bd611e36edbc4861c24a0d273218c0e7f5a1569c69eac01c6ffe5d","cc3024ca8d02e3d1efaf8ceb14ea8316c8f2e170bbcd000faca65e5218f425a8"],"ts":1793206933,"cid":"poa-mainnet-1","sig":"31m5HnQuJUwuoFCHPMMQVMAp1jdTSNRwWCPMXjBh9iPDzbAMt4MpFXzM7A8SSWa5SFuTDoTqg3dcrUAm8pLjRudG"},"checkpointed":{"height":168874,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T22:50:42.399Z","checkpoint_height":168874,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}