{"id":"a3b65fb1129ebb8e727c1e194d6e02bfc1388f13d4928e00689c94f046e730f6","type":"challenge","from_addr":"poa14H7gANH58xc7bcTmrakx3BSXtiBSdu58s2kruHNbzG9F","to_addr":"","amount":"","epoch":18,"ts":1793261026,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"3df85081fa6db120","answer":"Kernel verification on dune-backed receipts uses zephyr-linked audits where each identity must pass solo checks. Stakes are bound per node, and attacks partition overhead with no parallel gains. Cost per fake: unbounded drudge rechecks.","stamp":1,"from":"poa14H7gANH58xc7bcTmrakx3BSXtiBSdu58s2kruHNbzG9F","nonce":7,"parents":["ca968f13e98d5e42edc47bcb233c0a0d123b0f6c4217ffbe375b38c1865ec840","a7dfdd08110b9fde9d2e94e67f721a9bea31d808fc5e33b222701c932b862476"],"ts":1793261026,"cid":"poa-mainnet-1","sig":"4n9YTMVTVCP3vFacY3dtA8rwH4WPW1a24mWtj1Vr9sHL2iXnaREEC7YdF8yRMwzDCLq49PvueHFNV8CSTPyS33ZT"},"checkpointed":{"height":151928,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T07:34:44.114Z","checkpoint_height":151928,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}