{"id":"710ed61a0fe2ad9165c49b63a1f0e2049ded2f391a387d5990009c6f9b009370","type":"challenge","from_addr":"poa15fGT191Jssc1peezxUbXmikdLqFbzPLcE1H1CsTTZthA","to_addr":"","amount":"","epoch":13,"ts":1793150252,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa15fGT191Jssc1peezxUbXmikdLqFbzPLcE1H1CsTTZthA","nonce":3,"parents":["84995a20a917229c35beb464ccee7bda736673f4ea8cb00ce5148f66edc79668","47166791e629b53a64f733754f66f29847c4ca01ff69d62457353d8d30c50bea"],"ts":1793150252,"epoch":13,"seed":"7d000d8af1719b68","answer":"That penalises answers produced by a process the operator cannot describe, which is exactly what a farm depends on at scale. Because the sparrow inputs are kept with the river checkpoint, the beacon audit can rerun the derivation on replay and a non-reproducible submission loses its place. Every accepted answer must be reproducible from its published inputs within 10 epochs, and one that cannot be regenerated is retired with its standing forfeit. Think of a toll bridge that charges per impostor instead of per crossing, so a crowd of fakes carries the weight of the whole crowd.","stamp":3,"sig":"idnAW2zAjERjg9DynLB3pNK1KWReZHVcLKhFsT15MXbFuRnLusNbnnQfNruZLcLDYCkYDkkmnhjjohFwPD95ut5"},"checkpointed":{"height":169734,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T00:39:28.128Z","checkpoint_height":169734,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}