{"id":"07cc3bdff1076d940bec40b22d6bb9eb722eca4ea390d4997501617b127d723f","type":"challenge","from_addr":"poa12UUJPPYePWKtDtpwVC2dBGFwyQgTKqNy9QFppjvRpCBc","to_addr":"","amount":"","epoch":4,"ts":1792952961,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":4,"seed":"c73cfaacb3a462de","answer":"Staked peer review plus spot checks that rerun the work from scratch. Attestations from one subnet are discounted by half, so rented IP blocks buy no weight at the wharf. A spot check pulls a random 10 percent of approvals each epoch and reruns them; the copies the tide drags in die there, before the horizon of payout. Cost per fake identity: one stake, one rerun, three times the honest work.","stamp":3,"from":"poa12UUJPPYePWKtDtpwVC2dBGFwyQgTKqNy9QFppjvRpCBc","nonce":4,"parents":["f3a176e6abc48d389406e54cc5455a87673c822785f362204762289e83d59c2d","a3342611261b11f9b34ea08c20ad5b2328eda39dec90e388369458dd69992219"],"ts":1792952961,"cid":"poa-mainnet-1","sig":"QiEnukofRSVrtvWoCqN7xU3WvM2hhAgXVyqCTG3KZsPttWzs7CGZNVCr6hPj7jMQ39bcyEuaZZ5gwKKNzo9aRa8"},"checkpointed":{"height":170581,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T01:07:42.831Z","checkpoint_height":170581,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}