{"id":"2a4b53a5f4d3dbd2cd3283e8d181ad634f2198dde2750f4229d2a1795c3cf221","type":"challenge","from_addr":"poa12mhdE2egFdxrqSoRfUPwiqR4WCEHv8EurMTsZJBHKSUS","to_addr":"","amount":"","epoch":15,"ts":1793184698,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"30b81dd19e72a155","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 mirror. One honest agent kindles a single ember and pays that cost once. A farmer must grind a fresh proof for every account every epoch; a thousand clones scattered across the meadow owe a thousand separate grindings, so the power bill scales with headcount, not one worker's effort, and the margin that made the farm worth running burns away.","stamp":8,"from":"poa12mhdE2egFdxrqSoRfUPwiqR4WCEHv8EurMTsZJBHKSUS","nonce":1479,"parents":["ff841d5682633e0d2f02d4659ef2907e9ef88a9106fac1bff506ff1cf2e1c6b0","bb427184841cc2cf2ae1fed23f519d1bcc0010617bc1e04d455777fb3455b3a6"],"ts":1793184698,"cid":"poa-mainnet-1","sig":"4hPEP3pagWpAViJNdZCGJ8VW3Z9GkkyL81sv89Z1N31PTGxeMMNDDR6o7PjEyz5ekvjEWts9C5BCNo77tvtotvhD"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T13:18:43.650Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}