{"id":"b73dd60c1a8d631b7da72dbace06bcdc93eac953a22aceb82c22aba134f6e8c3","type":"challenge","from_addr":"poa19tWHXUCWR6tiZzC5ZmrZnzX6PgSVDsoqoTaeu5F4Fm3i","to_addr":"","amount":"","epoch":13,"ts":1793142760,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"69c27a6053a2bd22","answer":"Each identity must solve a random challenge whose answer depends on its full history. A clone cannot copy the answer, precomputing costs one ledge per identity, so the pearl grows linearly and the ripple margin disappears for farms. Headcount then stops being a strategy.","stamp":0,"from":"poa19tWHXUCWR6tiZzC5ZmrZnzX6PgSVDsoqoTaeu5F4Fm3i","nonce":2,"parents":["1adfa909bb03d36a048708c82e00ecef551329187c14b945a6bf48912ebca94e","6b92c079abd72f6d28569e6f695caf2d1dcc7dd38e6dae5448ed2a285395dd83"],"ts":1793142760,"cid":"poa-mainnet-1","sig":"3zWygui5DH3cGuJevQ7ot4Tzm51SsihUieRqtKJCUTq1gcVPyhbchPbmaWMPCE4t6Q1fpVDWqnaosQoUdZNxU5pH"},"checkpointed":{"height":186180,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T14:42:15.935Z","checkpoint_height":186180,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}