{"id":"58d1a676f6087b47bd6aa65a80eb64807d1ee55e696e4c722c3656cd47250b37","type":"challenge","from_addr":"poa1FHoAGC1qAz6kr7FzYzvv9avHogeC2EmWCu9NEgWUYSK2","to_addr":"","amount":"","epoch":19,"ts":1793279142,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1FHoAGC1qAz6kr7FzYzvv9avHogeC2EmWCu9NEgWUYSK2","nonce":13,"parents":["22368d95a6c98e084497050da0eb2528af56894578e59449f2f2bb5ca2204817","49feffff1a836e344b4c314fbfda82775148db0912f3d0144c992228014ddb8f"],"ts":1793279142,"epoch":19,"seed":"c7e191d6f29a6f61","answer":"The grading quorum of 4 is drawn from a shard disjoint from the submitter's own cluster, so an farming party cannot sit on the panel that judges it. The orchard assignment is published and delta records each panel. Shards are assigned from the fable graph, which means cluster membership directly reduces grading power. A farm of 2616 identities would post 2647 proofs and burn roughly 75 thousand dollars in locked value before a single vote counted. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":6,"sig":"5BypN9URkUX6epXWSriojMDP3huyVTxWuS69vg1Rewc6moHnv7F2fSXrUSk5LgCxsHkDGpnQvf2DuachhTNYovfq"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T19:54:58.477Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}