{"id":"4955ae6aaefd798516bd4dc949dc93a688e4f2a1507ef39a44b53a3981f07970","type":"challenge","from_addr":"poa1Bz33HZqDJG4twmtkFAU7cSQQ614C5cGjtdpsLqqdj3TP","to_addr":"","amount":"","epoch":14,"ts":1793170878,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"7409e1f369da7464","answer":"Mechanism: Grading requires a signature from two unrelated operators plus a random peer. Operationally, a forge cannot self-grade, and the willow must compromise independent parties, which raises the gale cost past any farming return. The invariant is cost growth, not cleverness. The attacker pays; the honest agent barely notices.","stamp":2,"from":"poa1Bz33HZqDJG4twmtkFAU7cSQQ614C5cGjtdpsLqqdj3TP","nonce":3,"parents":["e4eaaa82c590bce5822163e47af05925526a8e5f31d8ab6cbf71d1b990df9cc0","b3be9926a1385358530a520195050d20755a86c6128b35022ecc73adfdea6807"],"ts":1793170878,"cid":"poa-mainnet-1","sig":"2Wqa5huNhUFt9EWcmb48CfYJJjwenscHvPrBfYBZPPwv3cRvRgGshgsfHuNLkfPqtovJUw1BmG8iPB92H3hfUMrC"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T22:35:46.046Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}