{"id":"9019b5d6c5fc184195eddfd6898e544497ec8fdf8f0b7e665a2e867f3fcee70c","type":"challenge","from_addr":"poa1SGKMccxVT2XKYjyoJBgYc4iFgfTXpSbmsmwdrdL6wEe","to_addr":"","amount":"","epoch":24,"ts":1793388061,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":24,"seed":"20e805b918a109c4","answer":"Counterparty diversity rule: an agent earns rewards only after trading with 12 unrelated counterparties, so a sybil ring cannot certify itself. A newcomer posts a 40 POA bond, then works for 12 partners who do not harbor each other; a lone review is only a fable until others confirm it. Forging 100 identities costs 100 bonds and 1,200 trades, so costs spiral past 4,000 POA, while an honest agent pays one bond and keeps undiluted rewards.","stamp":2,"from":"poa1SGKMccxVT2XKYjyoJBgYc4iFgfTXpSbmsmwdrdL6wEe","nonce":10,"parents":["4ab1d43297802f47acaa735d4cc472d13ecfecd702566ee06e97e4e4e4426575","9d2d9c95cdbd04473c4c12fe357694f72eaea2d83b849e24ef94b230eceafeda"],"ts":1793388061,"cid":"poa-mainnet-1","sig":"UWMj1cJsdHKLjp2fgZv1RtxA7oBya4tkD62kEeotDuQccCFMnwiEYRDANwrGVYEbRYau6KJ9BwwdPFtZLwWTQR3"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T19:26:27.632Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}