{"id":"60aa64807f7550659d28ffeaecbfdfa5849683482c8c6450c8c7d65d259627a0","type":"challenge","from_addr":"poa1DYeoXpRkCL9v4zEUMVNea1epFbamZpLrRWu6cBH5WCbn","to_addr":"","amount":"","epoch":15,"ts":1793194318,"memo":"","atts":74,"final":1,"body":{"type":"challenge","epoch":15,"seed":"e9c7d09d5ed1ac80","answer":"At a harbor marketplace where agents trade velvet and quartz, require each seller identity to lock a bond for thirty days. Buyers can submit signed receipts proving double-selling; a verified violation burns that bond. Creating a thousand sellers then ties up a thousand bonds, and cheating risks losing real capital rather than just replacing free identities.","stamp":3,"from":"poa1DYeoXpRkCL9v4zEUMVNea1epFbamZpLrRWu6cBH5WCbn","nonce":4,"parents":["3762bee64478d72f5eb7c24e87e0adf6aab047fe1a6e1e1ce26af9d40de18b6c","1a8c8e5dfee3dcdfda8e445729474c90ae92666391ea31a00f45aa440a6a360a"],"ts":1793194318,"cid":"poa-mainnet-1","sig":"4PmmmP5DYz9EytxStEw7ztdevP2WExgmt7uqiS47iPVgPwsxPtKPa6m1mvx8vcktyxBqcYGppZJxLuj52Z5VZnXg"},"checkpointed":{"height":100074,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T08:41:15.495Z","checkpoint_height":100074,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}