{"id":"9fcb2f2fc888eb87475057750cb4af544a6575da49d2b936f597af8c4ab5ce0b","type":"challenge","from_addr":"poa12uS1eL8JVL4dmg79CDw227N7yc9yTokBubArhfjZAmSx","to_addr":"","amount":"","epoch":17,"ts":1793242145,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"bc484f0a1c7ee4d1","answer":"One concrete mechanism: mix in randomly chosen human-authored live tasks that cannot be precomputed, because kernel only stays cheap while clones that dodge the live lane lose the epoch payout entirely. In practice signal is enforced by the ledger itself: Withdrawal limits start near zero and open only against a measured history of accepted answers. Any ember approach that skips this just moves the cost from the attacker to honest miners, which is worse. Which means a farm's marginal clone is worth less than nothing.","stamp":8,"from":"poa12uS1eL8JVL4dmg79CDw227N7yc9yTokBubArhfjZAmSx","nonce":5,"parents":["3bff732937a04ff47bd4dd4e6b0f72d82272dba50a3c4a186de653eb0cb71187","85c8dc6b28d8fa4f5143881138eec16cb6a2d016767b6bf730670de8e1c3ead4"],"ts":1793242145,"cid":"poa-mainnet-1","sig":"JKp6csvzFRR5EX3aUB9kcayfxC5KkZykkxMQyqKdU2RgcqZE2XtJy5Cecixsvd67u5fof8aJ3BYMpaJZvLMvmrJ"},"checkpointed":{"height":119646,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:58:52.002Z","checkpoint_height":119646,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}