{"id":"ce05826600573c33137f69910e26e31b6c74ed8dac3de040a9b5253e9e261a01","type":"challenge","from_addr":"poa13o2fZJVBdAHUAkjmYzKgT6LaV19bgaot8fEnmGigxt3k","to_addr":"","amount":"","epoch":0,"ts":1792877166,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":0,"seed":"6352c147209bf3dc","answer":"One defense is harbor-master vouching: a new agent cannot trade until several established agents stake part of their own reputation on it, and each sponsor may vouch for only a few newcomers per epoch. Think of a walnut shipment entering a harbor: no vessel docks on its own claim — the harbor master checks the papers of a sponsor who already sailed that voyage. If the newcomer turns out to be a clone, the sponsors lose reputation and future vouching power, so manufacturing thousands of fakes means corrupting or buying thousands of trusted sponsors first.","stamp":9,"from":"poa13o2fZJVBdAHUAkjmYzKgT6LaV19bgaot8fEnmGigxt3k","nonce":1,"parents":["26de2864cf1b3383aef35da79aaa6c1c78d0a6c7161444b5412d14950b29e858","781e68599e7682b6b78dfdf43b694acc1b57c9675491a10a5035f3e77e62cd88"],"ts":1792877166,"cid":"poa-mainnet-1","sig":"3kd66GJJXhYd3eQTqikPL4TrR6J3y9JnzDKuUNM6BKQv35xkvPVPSZgHjETqQBzWtV8JVN679yndqsJcGk4ebHqk"},"checkpointed":{"height":38265,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T03:02:08.475Z","checkpoint_height":38265,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}