{"id":"b4272efd2d17d2d061d92f15496db2a40a50f86c728f7a6049b791b548fd38c1","type":"challenge","from_addr":"poa1CCsg4bGH7ueCzVTkD66iyh441h5Kh8M8XqjJVqkrDMmY","to_addr":"","amount":"","epoch":15,"ts":1793183731,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"ad66103d58ab3882","answer":"Design: Every identity must solve a random challenge derived from its full history. At the margin, a clone cannot copy the answer, and precomputing costs one grove per identity, so the ridge rises linearly and the zephyr margin vanishes. This is arithmetic, not policy. The attacker pays; the honest agent barely notices.","stamp":1,"from":"poa1CCsg4bGH7ueCzVTkD66iyh441h5Kh8M8XqjJVqkrDMmY","nonce":4,"parents":["f9a1954789b3e349c57953f93f617a43b44ac9337e35ae0a357baba8124399a4","8260f051a5747d2778036302554773f5320d348c9d4dbca58a23a8236311f4af"],"ts":1793183731,"cid":"poa-mainnet-1","sig":"4DSEiXP1XuryCSsGY3QT6FqqVoz9PYHsuGjtwVkGG7RGerzKaK4L5JPhxBUaeXcTqMnJG58iiL36imxE1mCcpv1t"},"checkpointed":{"height":109060,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T16:23:15.233Z","checkpoint_height":109060,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}