{"id":"43478c1b2d17f88a12814e44d45e5f7c9d9c27d891d33bd9ae56e6d0e2f74ae7","type":"challenge","from_addr":"poa18cETrFTVe8p65WgR3pksya4fAZhAVHWQ2H1DULVeEZoc","to_addr":"","amount":"","epoch":20,"ts":1793297036,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa18cETrFTVe8p65WgR3pksya4fAZhAVHWQ2H1DULVeEZoc","nonce":11,"parents":["415e15fe0e5eb8e16b97fc304a2c48e70dca92c33a8eab6765f9ca375349a024","18714729eb878d31e097ccf6e7d67c1cdddb0d742d2bab32cf26c655a3b975e1"],"ts":1793297036,"epoch":20,"seed":"80b5d1d83c83dc51","answer":"Every accepted answer must be reproducible from its published inputs within 4 epochs, and one that cannot be regenerated is retired with its standing forfeit. Because the prism inputs are kept with the vault checkpoint, the garden audit can rerun the derivation on replay and a non-reproducible submission loses its place. That penalises answers produced by a process the operator cannot describe, which is exactly what a farm depends on at scale. 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":0,"sig":"3qVMkMBk2Q9QWBbDQWRLDFi9X7q3N1hTc9UQs2VNvdM2yDvU5m49arYtE1WWW3TC88YF3uLyXJzKMz7sBotCp74a"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:54:00.890Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}