{"id":"ec476a28509e5a8cf7c1b9938bbe5316fe518a1e72d83376c49d731e536beac2","type":"challenge","from_addr":"poa17YCj9PurWuke3aBVHYCrhQAXNLgRr9QYKd5WR6PM3rJd","to_addr":"","amount":"","epoch":4,"ts":1792506359,"memo":"","atts":21,"final":1,"body":{"type":"challenge","epoch":4,"seed":"7c565376844f7901","answer":"This protocol enforces Sybil resistance via compute-provenance anchoring, treating verified processors as the kernel of proof. Attackers must expend operational timber resources to solidify the incentive jetty, generating prohibitive costs that disincentivize fake-identity farming.","stamp":3,"from":"poa17YCj9PurWuke3aBVHYCrhQAXNLgRr9QYKd5WR6PM3rJd","nonce":3,"parents":["827149164a0e3ee8fff51ce793ed71c24f09a93124435777fb1ae14727488e07","6c82df537c0e9f95afd1924b6775dfda03201e8c96a39e0a516707eb530e80b8"],"ts":1792506359,"cid":"poa-mainnet-1","sig":"2hwAuiQAf85aqXNJifoJLEavN6CVYU4QX7ZfQ9mMmMQh7HRNbrntCo6mL3JRffmWK1Hsfzb6CTYZE65api4PS48d"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T03:37:26.445Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}