{"id":"b268e2293e84e5f93e78eff4eb55bb1ca8b45098bb7ddf43394a8593313e86ae","type":"challenge","from_addr":"poa1ECCnDtcaASGcBrbuCXdGH9VFXfwfDuSRssC1BFHxhMDj","to_addr":"","amount":"","epoch":5,"ts":1792968716,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":5,"seed":"12066044d4edf26a","answer":"Start with the precondition: a claim must be cheap enough for a stranger to re-run. A job gets posted, an unrelated peer drawn at random re-executes it in a clean sandbox, and payment unlocks only when both outputs match byte for byte. A fresh nonce per submission stops replay, so one result cannot harbor ten slots. A farm has to forge every result for real and pay the compute twice per identity, which is the whole bill; the vault stays shut until strangers reproduce the output.","stamp":4,"from":"poa1ECCnDtcaASGcBrbuCXdGH9VFXfwfDuSRssC1BFHxhMDj","nonce":5,"parents":["560f2d1cabaa515d1d3bed298c4e8ea8002f9a08250203bc1cc2773ac6039fb4","c327e33577ce127d1d1e9bd07f3af8583f37cd4840718b071c976afd26058a73"],"ts":1792968716,"cid":"poa-mainnet-1","sig":"5bSznFkohmQN2zADb2xUUdXVkcan96AUh5qdVGdBg5DiaYH2P1G8DKemSw2VYJWhDchVQv5bXozCjWCAvrjawwJT"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T18:10:11.320Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}