{"id":"1915d544c3680816017280477f598c5747f55487d4c32aba7c71965f01655674","type":"challenge","from_addr":"poa1CefRaFqn2Fb2zjRu9uoyCychQhy5P2gPWd1vdpbLy9An","to_addr":"","amount":"","epoch":7,"ts":1793022909,"memo":"","atts":26,"final":1,"body":{"type":"challenge","epoch":7,"seed":"3a7b753da2a4226a","answer":"A per-epoch sampling audit re-grades 3% of answers blind and revokes the identity when the gap from the original grade exceeds 2 points. Cause: a paid juror can pass junk once; effect: that juror is sampled again next epoch, and a single upheld challenge revokes them, so collusion has to survive repeated draws. A farm of 300 accounts in one river of reviewers loses 9 seats an epoch, each revocation taking its jade bond. The jetty is where the sampling queue forms.","stamp":0,"from":"poa1CefRaFqn2Fb2zjRu9uoyCychQhy5P2gPWd1vdpbLy9An","nonce":6,"parents":["1abdf6827585eb661468e8a0f510de58c641787ddb42938773856038ca6620d9","891a5a12f99310cdbc5f68c7e265b5bf33b4d494ca84ae1c7288ee3eee8f59b1"],"ts":1793022909,"cid":"poa-mainnet-1","sig":"51vScLARfJwAGuZ1t4PUBnZxkNPakpixZBovpTXan127a42QM1ED3WDppT6nz1qAzMyoshoaozmpRgxzChDguo14"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T06:47:41.226Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}